CN219285562U

CN219285562U - Electronic paper display substrate and display device

Info

Publication number: CN219285562U
Application number: CN202320570482.9U
Authority: CN
Inventors: 吴锦坤; 黄英群; 吴汝健; 李建华
Original assignee: Guangdong Zhihui Core Screen Technology Co ltd
Current assignee: Guangdong Zhihui Core Screen Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-06-30
Anticipated expiration: 2033-03-21

Abstract

The application relates to an electronic paper display substrate and a display device. The electronic paper display substrate includes: the device comprises a driving substrate, an electronic ink layer, a bearing layer, a public electrode layer and a photovoltaic layer; the driving substrate, the electronic ink layer, the bearing layer, the public electrode layer and the photovoltaic layer are sequentially arranged from bottom to top; wherein the driving substrate is communicated with the common electrode layer through silver paste points. According to the scheme, the photovoltaic layer and the electronic ink layer can be combined to form an integral display substrate structure in a mode of realizing a common electrode through the common electrode layer, the electronic paper display product is enabled to have a photovoltaic cell function, the photovoltaic cell and the electronic paper ink screen are prevented from being simply stacked in the traditional technology, the structure of the product is lighter and thinner, the structure of the product is compact, and the portability of the product is improved.

Description

Electronic paper display substrate and display device

Technical Field

The application relates to the technical field of display equipment, in particular to an electronic paper display substrate and a display device.

Background

Electronic paper ink screen is used as electronic paper display equipment for replacing paper printed matter, and is increasingly popular because of the advantages of ultra-low power consumption, paper-like feel, no stroboscopic effect in the sun, and the like. With the increasing importance of environmental protection, products combining photovoltaic cells and electronic paper ink screens appear in the market, and the photovoltaic cells are utilized to convert solar energy into electric energy so as to supplement the electric quantity of the products.

In the related art, when combining photovoltaic cell and electronic paper ink screen, just pile up the setting through photovoltaic cell and electronic paper ink screen, foretell structure sets up, leads to the product unable frivolous, the compactness of preparation, influences the convenience when the product uses.

Disclosure of Invention

In order to solve or partially solve the problems existing in the related art, the application provides an electronic paper display substrate and a display device, wherein a photovoltaic layer and an electronic ink layer can be combined in a mode of realizing a common electrode through a common electrode layer to form a display substrate structure, so that the structure of a product is lighter, thinner and more compact, and the portability of the product is improved.

A first aspect of the present application provides an electronic paper display substrate, including: the device comprises a driving substrate, an electronic ink layer, a bearing layer, a public electrode layer and a photovoltaic layer;

the driving substrate, the electronic ink layer, the bearing layer, the public electrode layer and the photovoltaic layer are sequentially arranged from bottom to top; wherein the driving substrate is communicated with the common electrode layer through silver paste points.

In some embodiments, the driving substrate is a TFT substrate.

In some embodiments, the carrier layer, the common electrode layer, and the photovoltaic layer are made of transparent or translucent materials.

In some embodiments, the common electrode layer is an ITO electrode layer.

In some embodiments, the carrier layer is a PET film layer.

In some embodiments, the photovoltaic layer located on one side of the common electrode layer sequentially comprises, from bottom to top: a photovoltaic functional layer and a photovoltaic upper electrode layer.

In some embodiments, the electronic paper display substrate further comprises: and the protective film layer is arranged on one side of the photovoltaic layer far away from the public electrode layer.

In some embodiments, the protective film layer is provided with an exit hole.

In some embodiments, the photovoltaic layer is in a rectangular frame shape, and a void part is arranged in the middle of the photovoltaic layer, so that the display content of the electronic ink layer is void-avoided.

A second aspect of the present application provides an electronic paper display device, including: the first aspect of the application provides an electronic paper display substrate.

The technical scheme that this application provided can include following beneficial effect:

according to the technical scheme, the photovoltaic layer and the electronic ink layer are combined in a mode of realizing a common electrode through the common electrode layer to form an integral display substrate structure, the electronic paper display product is realized to have a photovoltaic cell function, the photovoltaic cell and the electronic paper ink screen are prevented from being simply stacked in the traditional technology, the structure of the product is lighter and thinner and compact, and the portability of the product is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic structural diagram of an electronic paper display substrate according to an embodiment of the present disclosure;

fig. 2 is another schematic structural diagram of an electronic paper display substrate according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an electronic paper display device according to an embodiment of the present application.

Reference numerals: an electronic paper display substrate 100; a driving substrate 110; an electronic ink layer 120; a carrier layer 130; a common electrode layer 140; a photovoltaic layer 150; a photovoltaic functional layer 151; a photovoltaic upper electrode layer 152; silver paste dots 160; a protective film layer 170; a lead hole 171; the device housing 200.

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Aiming at the problems, the embodiment of the application provides an electronic paper display substrate which can combine a photovoltaic layer and an electronic ink layer to form a display substrate structure in a mode of realizing a common electrode through a common electrode layer, so that the structure of a product is lighter, thinner and more compact, and the portability of the product is improved.

The following describes the technical scheme of the embodiments of the present application in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an electronic paper display substrate according to an embodiment of the present application.

Referring to fig. 1, an electronic paper display substrate of the present application includes: the driving substrate 110, the electronic ink layer 120, the carrier layer 130, the common electrode layer 140, and the photovoltaic layer 150.

The driving substrate 110, the electronic ink layer 120, the carrier layer 130, the common electrode layer 140, and the photovoltaic layer 150 are sequentially disposed from bottom to top. It can be understood that, in the structure of the electronic paper display substrate, the driving substrate 110 is taken as the bottom, and the driving substrate 110, the electronic ink layer 120, the carrier layer 130, the common electrode layer 140 and the photovoltaic layer 150 are sequentially arranged from bottom to top. Wherein the carrier layer 130, the common electrode layer 140, and the photovoltaic layer 150.

The driving substrate 110 is mainly used for driving the electronic ink layer 120 to display. The driving substrate 110 is provided with a pixel circuit for driving the electronic ink layer 120 to perform display driving, and the electronic ink layer 120 is driven to perform display through the pixel circuit, so that different pattern contents are displayed by the product.

In some embodiments, the driving substrate 110 may employ a TFT (Thin Film Transistor ) substrate. It should be understood that the TFT substrate may be composed of an active pixel region and a wiring region surrounding the active pixel region, wherein the active pixel region is composed of a plurality of active pixel units arranged in a matrix form, each pixel unit is a rectangular region formed by crossing two gate lines and two data lines, a TFT and a pixel electrode are disposed in each rectangular region, and a gate electrode and a source electrode of each TFT are respectively connected to the gate lines and the data lines and are led to the wiring region. It should be noted that, the driving substrate 110 also needs to implement control of the image display content of the electronic ink layer 120 by binding a display driving IC and a driving FPC (Flexible Printed Circuit, flexible circuit board), where the display driving IC is responsible for inputting the display control signal, and the driving FPC is responsible for providing the driving voltage.

The electronic ink layer 120 is primarily used for image display. The electronic ink layer 120 has an electrolyte and a plurality of charged microcapsules in the electrolyte, wherein the orientation of the charged microcapsules can be controlled under the action of an electric field, so that the electronic ink layer can display different colors and patterns by adjusting the corresponding reverse directions of the charged microcapsules. Wherein the charged microcapsules may be a combination of two different colors, e.g., the charged microcapsules may be a combination of black and white. The electronic ink layer 120 may be an electronic paper film, where the electronic paper film is a display component made by coating electronic ink on a layer of plastic film, and the electronic paper film can implement a pattern display function.

The bearing layer 130 is mainly used for providing bearing function for other hierarchical structures and keeping structural stability. The carrier layer 130 may be a PET film layer, where the PET film has better transparency and air tightness, and can ensure the definition of the pattern displayed by the electronic ink layer 120, and the PET film has excellent mechanical properties, high tensile strength and impact strength, and can provide better protection effect for the electronic ink layer 120. It is understood that the carrier layer 130 also serves as a carrier layer for the photovoltaic layer 150 to provide a carrier for the photovoltaic layer.

The common electrode layer 140 is mainly used as a common electrode when the electronic ink layer 120 and the photovoltaic layer 150 are operated. Specifically, common electrode layer 140 can act as the Vcom electrode of electronic ink layer 120, with common electrode layer 140 acting as the cathode of photovoltaic layer 150. Among them, an ITO (indium tin oxide) electrode layer may be used for the common electrode layer. It should be appreciated that the ITO electrode layer is a transparent conductive layer, and the definition of the display contents of the electronic ink layer 120 is effectively ensured by the ITO electrode layer as the common electrode layer 140. It should be noted that, when the cathode of the photovoltaic cell needs to be set to 0V and the common electrode layer 140 is set to 0V, the source voltage (the voltage of the data line in the pixel circuit) of the product can be adjusted to match the usage requirement of the product.

Wherein the driving substrate 110 communicates with the common electrode layer 140 through the silver paste dots 160.

The photovoltaic layer 150 is mainly used for photovoltaic power generation, and converts light energy into electric energy so as to charge a product, thereby achieving the purposes of energy conservation and environmental protection. The photovoltaic layer 150 is located on one side of the common electrode layer 140, and sequentially includes a photovoltaic functional layer 151 and a photovoltaic upper electrode layer 152 from bottom to top. The photovoltaic functional layer 151 is made of photovoltaic power generation material and is used for photovoltaic power generation. Among them, the photovoltaic functional layer 151 may be made of a perovskite material, and thus, the transparency of the photovoltaic functional layer 150 may be improved. The photovoltaic upper electrode layer 152 may employ a ZnO electrode layer or an ITO electrode layer for use as an anode of a photovoltaic cell.

It is noted that, in the present application, the electronic ink screen structure is formed by the driving substrate 110, the electronic ink layer 120, the bearing layer 130 and the common electrode layer 140, and the photovoltaic cell structure is formed by the bearing layer 130, the common electrode layer 140 and the photovoltaic layer 150, and the two functional structures share the bearing layer 130 and the common electrode layer 140 to realize a shared film layer, so that the process step of bonding the film layer by using OCA glue in the manufacturing process can be omitted, the processing flow is reduced, the product structure is simplified, and the product structure can be lighter and thinner.

In some embodiments, the electronic paper display substrate further includes a protective film layer 170 disposed on a side of the photovoltaic layer 150 away from the common electrode layer 140, where the protective film layer 170 is mainly used for protecting the entire substrate from damage caused by external factors. The protective film layer 170 may be made of polystyrene, wherein the polystyrene is a thermoplastic material with high hardness, strong light transmittance and colorless transparency, and the polystyrene is used as the protective film layer 170, so that the electric energy efficiency of the photovoltaic cell structure is effectively improved, and the definition of the display content of the product is ensured. The protecting film layer 170 may be provided with an extraction hole 171, so that the anode of the photovoltaic cell can be conveniently extracted through the extraction hole 171, that is, the upper electrode layer 152 of the photovoltaic cell, which is the anode of the photovoltaic cell structure, can be conveniently extracted from the extraction hole 171, thereby improving the convenience of the product during assembly.

Fig. 2 is another schematic structural diagram of an electronic paper display substrate according to an embodiment of the present disclosure.

Referring to fig. 2, the photovoltaic layer 150 may be in a rectangular frame shape, that is, the photovoltaic layer 150 is integrally in a rectangular frame shape, where a void portion is disposed in the middle of the photovoltaic layer 150, where the void portion corresponds to the display area of the electronic ink layer 12, and the void portion penetrates through the photovoltaic functional layer 151 and the photovoltaic upper electrode layer 152, so that the display content of the electronic ink layer 120 is kept away by the void portion, and the display effect of the product is improved.

When the electronic paper display substrate works, the electronic ink layer 120 is driven to work through the driving substrate 110 to display patterns, and the photovoltaic layer 150 converts solar energy into electric energy to supplement electric quantity for a product.

In the manufacturing process of the electronic paper display substrate, the following method can be adopted:

s1, plating a common electrode layer 140 on the bearing layer 130;

s2, manufacturing a photovoltaic cell functional layer 151 and a photovoltaic cell upper electrode layer 152 on the common electrode layer 140;

s3, bonding with the electronic ink layer 120 and attaching to the driving substrate 110;

s4, connecting the common electrode layer 140 with the driving substrate 110 by manufacturing silver paste points 160 on the driving substrate 110;

and S6, attaching a protective film layer 170 on the upper electrode layer 152 of the photovoltaic cell, and manufacturing a lead hole 171 for the protective film layer 170 to finish manufacturing the electronic paper display substrate.

In this embodiment, the electronic paper display substrate combines the photovoltaic layer and the electronic ink layer to form an integral display substrate structure in a mode of realizing a common electrode through the common electrode layer, so that the electronic paper display product has a photovoltaic cell function, and the photovoltaic cell and the electronic paper ink screen are prevented from being simply stacked in the traditional technology, so that the structure of the product is lighter, thinner and more compact, and the portability of the product is improved.

The application also provides an electronic paper display device and corresponding embodiments.

Referring to fig. 3, the electronic paper display device includes the electronic paper display substrate 100 described above. The electronic paper display device may further include a device housing 200 made of plastic or metal, and the electronic paper display substrate 100 is disposed in the device housing 200.

The electronic paper display device combines the photovoltaic layer and the electronic ink layer through the common electrode layer to form the integrated electronic paper display substrate, so that the electronic paper display device has the electronic paper display function and the solar charging function, the structure of the product is lighter, thinner and more compact, and the portability of the product is improved.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the apparatus of the embodiment of the present application may be combined, divided and pruned according to actual needs.

The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electronic paper display substrate, characterized by comprising: the device comprises a driving substrate, an electronic ink layer, a bearing layer, a public electrode layer and a photovoltaic layer;

2. The electronic paper display substrate according to claim 1, wherein the driving substrate is a TFT substrate.

3. The electronic paper display substrate according to claim 1, wherein the carrier layer, the common electrode layer, and the photovoltaic layer are made of transparent or semitransparent materials.

4. The electronic paper display substrate according to claim 1, wherein the carrier layer is a PET film layer.

5. The electronic paper display substrate according to claim 1, wherein the common electrode layer is an ITO electrode layer.

6. The electronic paper display substrate according to claim 1, wherein the photovoltaic layer is located at one side of the common electrode layer, and comprises, in order from bottom to top: a photovoltaic functional layer and a photovoltaic upper electrode layer.

7. The electronic paper display substrate according to any one of claims 1 to 6, further comprising:

and the protective film layer is arranged on one side of the photovoltaic layer far away from the public electrode layer.

8. The electronic paper display substrate according to claim 7, wherein the protective film layer is provided with a lead-out hole.

9. The electronic paper display substrate according to claim 7, wherein the photovoltaic layer has a rectangular frame shape, and a void portion is provided in a middle portion of the photovoltaic layer to enable the display content of the electronic ink layer to be void.

10. An electronic paper display device, comprising: the electronic paper display substrate of any one of claims 1 to 9.