CN218497312U - Electronic paper structure - Google Patents
Electronic paper structure Download PDFInfo
- Publication number
- CN218497312U CN218497312U CN202222795189.0U CN202222795189U CN218497312U CN 218497312 U CN218497312 U CN 218497312U CN 202222795189 U CN202222795189 U CN 202222795189U CN 218497312 U CN218497312 U CN 218497312U
- Authority
- CN
- China
- Prior art keywords
- electronic paper
- polyimide film
- layer
- circuit layer
- paper structure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model provides an electronic paper structure, include: a substrate layer; a circuit layer on the substrate layer; the electronic paper membrane is positioned on one side, away from the substrate layer, of the circuit layer; the polyimide film is positioned on one side, away from the circuit layer, of the electronic paper film, the thickness of the polyimide film is 5-30 micrometers, and the transmittance of the polyimide film to ultraviolet light is less than or equal to 5%. The utility model provides an electronic paper structure can improve electronic paper's reliability.
Description
Technical Field
The utility model relates to a show technical field, concretely relates to electronic paper structure.
Background
With the rapid development of the technology of the internet of things, an ecosystem of the internet of things has been basically formed. Bistable electronic paper related products, such as electronic tags, electronic table boards, electronic chest cards, electronic doorplates, electronic bus stop boards, electronic bedside cards, electronic infusion cards and the like, have been applied to various aspects of life. The electronic paper technology is a generic name of a technology, and is generally called as E-paper, and mostly adopts an electrophoretic Display (EPD) technology as a Display panel, and the Display effect of the electronic paper technology is close to the natural paper effect, so that the reading fatigue is avoided. In recent years, electronic paper display screens are widely used in the fields of electronic reading, electronic tags and the like due to the characteristics of low power consumption, good sunlight readability and the like. Compared with Liquid Crystal Display (LCD), the electronic paper display screen does not need to align the electrophoretic particles, and the display is realized by the movement and reflection of the electrophoretic particles between two electrodes, so the electronic paper display screen is more easily applied to flexible display.
The existing electronic paper structure comprises a polystyrene film, and meanwhile, a metal ion coating is coated on the surface of the polystyrene film to block the transmittance of ultraviolet light, but the metal ion coating can only block the ultraviolet light with the wavelength less than 380nm, and the ultraviolet light resistance of the metal ion coating is weaker, so that the reliability of the electronic paper is poorer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the relatively poor defect of reliability of electron paper among the prior art lies in overcoming to provide an electron paper structure.
The utility model provides an electronic paper structure, include: a substrate layer; a circuit layer on the substrate layer; the electronic paper membrane is positioned on one side, away from the substrate layer, of the circuit layer; the polyimide film is positioned on one side, away from the circuit layer, of the electronic paper film, the thickness of the polyimide film is 5-30 micrometers, and the transmittance of the polyimide film to ultraviolet light is smaller than or equal to 5%.
Optionally, the polyimide film completely blocks ultraviolet light with a wavelength of 200nm to 400 nm.
Optionally, the thickness of the polyimide film is 15 μm to 25 μm.
Optionally, the roughness of the surface of the side of the polyimide film facing away from the circuit layer is greater than the roughness of the surface of the side of the polyimide film facing towards the circuit layer.
Optionally, the electronic paper structure further includes: a water resistant layer; the water-resistant layer is positioned on one side surface of the polyimide film, which faces the electronic paper film.
Optionally, the water blocking layer comprises: the silicon nitride water-blocking film and the silicon oxide water-blocking film are alternately arranged at intervals.
Optionally, the total thickness of the water-blocking layer is 0.1-3 μm.
Optionally, the polyimide film has a single-layer structure or a laminated structure.
Optionally, the electronic paper membrane is located on part of the circuit layer; the electronic paper structure further includes: the edge sealing adhesive layer is positioned on the circuit layer around the side part of the electronic paper membrane; the edge sealing adhesive layer also extends to the surface of the side wall of the polyimide film.
Optionally, the electronic paper structure further includes: and the driving chip is positioned on part of the circuit layer and is electrically connected with the circuit layer.
The above technical scheme of the utility model following beneficial effect has:
the utility model provides a technical scheme provides an electronic paper structure, include: a substrate layer; a circuit layer on the substrate layer; the electronic paper membrane is positioned on one side, away from the substrate layer, of the circuit layer; the polyimide film is positioned on one side, away from the circuit layer, of the electronic paper film, the thickness of the polyimide film is 5-30 micrometers, and the transmittance of the polyimide film to ultraviolet light is less than or equal to 5%. The thickness of the polyimide film is smaller in the range, so that the polyimide film is thinner, the overall thickness of the electronic paper can be reduced, and the application of the ultrathin electronic paper is realized; secondly, the transmittance of the polyimide film to ultraviolet light is less than or equal to 5%, so that the polyimide film has strong ultraviolet light resistance, the probability of ultraviolet light transmitting through the polyimide film can be reduced, and the electronic paper diaphragm is prevented from being scratched, thereby prolonging the service life of the electronic paper and improving the reliability of the electronic paper.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an electronic paper structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the transmittance of a polyimide film to ultraviolet light in an embodiment of the present invention;
reference numerals are as follows:
1-a substrate layer; 2-a circuit layer; 3-electronic paper diaphragm; 4-polyimide film; 5-a water-resistant layer; 6-edge sealing glue layer.
Detailed Description
The technical solution of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, an embodiment of the present invention provides an electronic paper structure, including: a substrate layer 1; a circuit layer 2 located on the substrate layer 1; the electronic paper membrane 3 is positioned on one side, away from the substrate layer 1, of the circuit layer 2; the electronic paper film comprises a polyimide film 4 positioned on one side, away from the circuit layer 2, of the electronic paper film 3, wherein the thickness of the polyimide film 4 is 5-30 micrometers, and the transmittance of the polyimide film 4 to ultraviolet light is smaller than or equal to 5%.
In this embodiment, since the thickness of the polyimide film 4 is smaller in the above range, the polyimide film 4 is thinner, which can reduce the overall thickness of the electronic paper and realize the application of the ultrathin electronic paper; secondly, the transmittance of the polyimide film 4 to ultraviolet light is less than or equal to 5%, so that the ultraviolet light resistance of the polyimide film 4 is strong, the probability of ultraviolet light transmitting through the polyimide film 4 can be reduced, and the electronic paper diaphragm 3 is prevented from being scratched, thereby prolonging the service life of the electronic paper and improving the reliability of the electronic paper.
In one embodiment, the substrate layer 1 comprises a glass substrate layer or a polyimide film substrate layer.
In one embodiment, the polyimide film 4 is a single-layer structure or a laminated structure.
In one embodiment, the thickness of the polyimide film 4 is 15 μm to 25 μm, for example 15 μm, 20 μm or 25 μm.
In one embodiment, the polyimide film 4 comprises a transparent polyimide film. The display effect of the electronic paper can be obviously improved by using the transparent polyimide film.
Referring to fig. 2, the polyimide film 4 is completely blocked from ultraviolet light having a wavelength of 200nm to 400 nm. Illustratively, the polyimide film 4 is completely blocking ultraviolet light having a wavelength of 200nm, 300nm, or 400 nm. When the ultraviolet light with the wavelength in the range is irradiated, the polyimide film 4 can completely prevent the ultraviolet light from transmitting through the polyimide film 4, so that the electronic paper diaphragm is prevented from being scratched.
In fig. 2, the wavelength on the abscissa represents the wavelength of ultraviolet light, and the transmittance on the ordinate represents the transmittance of the polyimide film 4 to ultraviolet light.
The surface of the side of the polyimide film 4 facing away from the circuit layer 2 has a roughness greater than the surface of the side of the polyimide film 4 facing the circuit layer 2. This arrangement is advantageous in that the front and back sides of the polyimide film 4 can be distinguished when the polyimide film 4 is laid. Secondly, when the polyimide film 4 is irradiated by ultraviolet light, because the roughness of the surface of one side of the polyimide film 4, which is far away from the circuit layer 2, is large, the ultraviolet light is diffusely reflected on the surface of one side of the polyimide film 4, which is far away from the circuit layer 2, and the reflected light is irregularly reflected in different directions, so that the probability that the ultraviolet light penetrates through the polyimide film 4 can be reduced.
In one embodiment, the polyimide film has a yellowing index of less than or equal to 5. The smaller the yellow edge index is, the less the probability of yellowing of the polyimide film 4 is, which is beneficial to improving the display effect of the electronic paper and prolonging the service life of the electronic paper in the use process.
In one embodiment, the temperature of the glass transition of the polyimide film 4 is greater than or equal to 350 ℃. The higher the temperature of the glass transition of the polyimide film 4 is, the more stable the structure of the polyimide film 4 is, so that the reliability of the electronic paper is improved.
The glass transition refers to a transition of the polyimide film 4 between a glassy state and a high elastic state, and has a great influence on the properties of the polyimide film 4, particularly the mechanical properties. In general, the softer the structure of the polyimide film 4, the lower the glass transition temperature, and the more rigid the structure of the polyimide film 4, the higher the glass transition temperature. Therefore, the structure of the polyimide film 4 is stable, and the reliability of the electronic paper can be improved.
The electronic paper structure further includes: a water-resistant layer 5; the water-resistant layer 5 is positioned on one side surface of the polyimide film 4 facing the electronic paper membrane 3. The setting of water blocking layer 5 can avoid external steam invasion, avoids external steam and the contact of electron paper diaphragm 3, improves the reliability of electron paper structure, secondly, water blocking layer 5 can also prevent electron paper ink and water in the electron paper diaphragm 3 overflows, causes electron paper diaphragm 3 presents the image unclear.
In one embodiment, the water resistant layer 5 comprises: the silicon nitride water-blocking film and the silicon oxide water-blocking film are alternately arranged at intervals. The water-blocking layer 5 is formed by lamination, so that the water-blocking effect is better.
In one embodiment, the total thickness of the water-blocking layer 5 is 0.1 μm to 3 μm, for example 0.1 μm, 0.2 μm or 0.3 μm. If the total thickness of the water-resistant layer 5 is too large, the degree of reducing the overall thickness of the electronic paper is weakened, and the possibility of realizing the application of the ultrathin electronic paper is low; if the total thickness of the waterproof layer 5 is too small, the effect of avoiding external water vapor invasion is small, and the probability of avoiding the external water vapor from contacting the electronic paper membrane 3 is small.
In one embodiment, the e-paper film 3 is located on a portion of the circuit layer 2; the electronic paper structure further includes: the edge sealing adhesive layer 6 is positioned on the circuit layer 2 around the side part of the electronic paper membrane 3; the edge sealing adhesive layer 6 also extends to the surface of the side wall of the polyimide film 4.
In one embodiment, the edge sealant layer 6 comprises a quick ear sealant layer (EC sealant layer).
In one embodiment, the e-paper membrane 3 is adapted to develop color, including e-paper ink and color-developing particles; the electronic paper ink is formed by injecting electrophoretic display microcapsules into a transparent conductive electrode, wherein the electrophoretic display microcapsules are prepared by putting color-developing particles into microcapsule solution and screening the microcapsule solution by a rotating wheel. Specifically, the material of the transparent conductive electrode comprises indium tin oxide or indium zinc oxide.
The color particles are used for representing the display color and the display definition of the diaphragm 3 of the electronic paper, and the electrophoretic display microcapsule is used for representing the display definition and the display transparency of the diaphragm 3 of the electronic paper.
The electronic paper structure includes: and the driving chip is positioned outside the edge sealing adhesive layer 6 and is positioned on part of the circuit layer 2 and is electrically connected with the circuit layer 2.
In one embodiment, the driving chip includes a display driving chip.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. An electronic paper structure, comprising:
a substrate layer;
a circuit layer on the substrate layer;
the electronic paper membrane is positioned on one side, away from the substrate layer, of the circuit layer;
the polyimide film is positioned on one side, away from the circuit layer, of the electronic paper film, the thickness of the polyimide film is 5-30 micrometers, and the transmittance of the polyimide film to ultraviolet light is less than or equal to 5%.
2. The electronic paper structure of claim 1, wherein the polyimide film is completely blocking ultraviolet light having a wavelength of 200nm to 400 nm.
3. The electronic paper structure of claim 1, wherein the polyimide film has a thickness of 15 to 25 μ ι η.
4. The electronic paper structure of claim 1, wherein a surface of the side of the polyimide film facing away from the circuit layer has a roughness greater than a surface of the side of the polyimide film facing toward the circuit layer.
5. The electronic paper structure of claim 1, further comprising: a water resistant layer; the water-resistant layer is positioned on the surface of one side, facing the electronic paper membrane, of the polyimide membrane.
6. The electronic paper structure of claim 5, wherein the water-resistant layer comprises: the silicon nitride water-blocking film and the silicon oxide water-blocking film are alternately arranged at intervals.
7. The electronic paper structure of claim 5, wherein the water-blocking layer has a total thickness of 0.1 μm to 3 μm.
8. The electronic paper structure of claim 1, wherein the polyimide film is a single layer structure or a laminated structure.
9. The e-paper structure of claim 1, wherein the e-paper membrane is located on a portion of the circuit layer; the electronic paper structure further includes: the edge sealing adhesive layer is positioned on the circuit layer around the side part of the electronic paper membrane; the edge sealing adhesive layer also extends to the surface of the side wall of the polyimide film.
10. The electronic paper structure of claim 9, further comprising: and the driving chip is positioned on part of the circuit layer and is electrically connected with the circuit layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222795189.0U CN218497312U (en) | 2022-10-21 | 2022-10-21 | Electronic paper structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222795189.0U CN218497312U (en) | 2022-10-21 | 2022-10-21 | Electronic paper structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218497312U true CN218497312U (en) | 2023-02-17 |
Family
ID=85195094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222795189.0U Active CN218497312U (en) | 2022-10-21 | 2022-10-21 | Electronic paper structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218497312U (en) |
-
2022
- 2022-10-21 CN CN202222795189.0U patent/CN218497312U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7660033B2 (en) | Electrophoretic display device and electronic apparatus | |
| US10698246B2 (en) | Display screen, display screen assembly, and terminal | |
| US10823996B2 (en) | Display panel and method of manufacturing the same, display device | |
| US20210294137A1 (en) | Display device comprising a flip chip film connected to a connecting surface of a plurality of bonding pins and manufacturing method thereof | |
| JP2002041231A (en) | Display unit of screen entry type | |
| US20190243187A1 (en) | Display module | |
| CN218497312U (en) | Electronic paper structure | |
| JP2008185935A (en) | Display device | |
| JP2019020560A (en) | Dimming body | |
| CN208044253U (en) | A kind of narrow frame full view LCD panel | |
| JP4610037B2 (en) | Liquid crystal display device | |
| CN114815386A (en) | Backlight module, display device and preparation method of display module | |
| CN210323686U (en) | Liquid crystal display backlight module | |
| JP4713007B2 (en) | Liquid crystal display device | |
| CN112255830A (en) | Laser induction panel, manufacturing method thereof and display device | |
| CN219435165U (en) | Rearview mirror module, rearview mirror, electronic equipment and vehicle-mounted terminal | |
| CN213934491U (en) | Electronic paper film unit, electronic paper packaging structure and electronic device | |
| CN217112957U (en) | Display panel and electronic equipment | |
| CN212031898U (en) | Electronic paper display with double-layer design of wiring structure | |
| CN216286608U (en) | Display module integrated with touch key and electronic equipment | |
| JPS62229221A (en) | Liquid crystal display device | |
| CN219891533U (en) | Electronic paper display panel and display device thereof | |
| CN214670558U (en) | High-light-transmittance explosion-proof resistance touch screen | |
| CN112578605A (en) | Electronic paper packaging structure, packaging method and electronic device | |
| CN110673699B (en) | Display module and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |