CN214375729U

CN214375729U - Electronic paper display device

Info

Publication number: CN214375729U
Application number: CN202120590707.8U
Authority: CN
Inventors: 吴浪; 穆欣炬; 刘宏俊; 马中生
Original assignee: Yiwu Qingyue Photoelectric Technology Co ltd; Suzhou Qingyue Optoelectronics Technology Co Ltd; Yiwu Qingyue Optoelectronic Technology Research Institute Co Ltd
Current assignee: Yiwu Qingyue Photoelectric Technology Co ltd; Suzhou Qingyue Optoelectronics Technology Co Ltd; Yiwu Qingyue Optoelectronic Technology Research Institute Co Ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-10-08
Anticipated expiration: 2031-03-23

Abstract

The utility model belongs to the display device field discloses an electronic paper display device, including electronic paper body and drive base plate, the electronic paper body has the display surface, and the drive base plate is connected in the display surface of electronic paper body, and the drive base plate includes transparent substrate and transparent pixel electrode layer, and the pixel electrode layer is located between transparent substrate and the display surface, and at least one side of transparent substrate's circumference is provided with the light source, is provided with the micro-structure on the transparent substrate to make light evenly jet out transparent substrate's play plain noodles through transparent substrate. The transparent driving substrate is provided with the microstructures, the driving substrate is arranged on the light incident side of the electronic paper body, and the transparent driving substrate is used for replacing the existing light guide plate, so that the product thickness is reduced, and the product cost is reduced; when the external environment is dark or the outside has no light source, the light source connected to the driving substrate is turned on, and the display effect of the electronic paper display device is improved.

Description

Electronic paper display device

Technical Field

The utility model relates to a display device field especially relates to an electronic paper display device.

Background

The electronic paper display device uniformly disperses dyed charged particles into a medium solution with certain viscosity, and utilizes an electric field to make the charged particles do electrophoretic motion to generate color display.

As shown in fig. 1, most of the conventional electronic paper display devices include an electronic paper body 2 ', a protective film 6 ', and a driving substrate 1 '. The protective film 6 'is attached to the light-emitting surface of the electronic paper body 2'. The driving substrate 1 'is attached to the bottom surface of the electronic paper body 2'. The electronic paper body 2 ', the protective film 6' and the drive substrate 1 'are coated with edge sealing glue 7'. The electronic paper display device displays contents by reflecting external light, and when the external light is dark or no external light source exists, a user cannot see the displayed contents. As shown in fig. 2, in order to meet the use requirement of the user in a dark environment, the light guide plate 3 'and the LED lamp 4' are additionally arranged on the display surface of the electronic paper body 2 ', but the thickness and the cost of the product are increased, the light guide plate 3' needs to be attached to the electronic paper body 2 'through the optical adhesive 5', and the product yield is also affected if air bubbles exist in the attaching process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic paper display device, it still has good display effect under the dark or external condition that does not have the light source of external light, and overall structure is thinner, and product cost is lower.

In order to realize the purpose, the following technical scheme is provided:

the electronic paper display device comprises an electronic paper body and a driving substrate, wherein the electronic paper body is provided with a display surface, the driving substrate is connected to the display surface of the electronic paper body and comprises a transparent substrate and a transparent pixel electrode layer, the pixel electrode layer is located between the transparent substrate and the display surface, at least one side surface in the circumferential direction of the transparent substrate is provided with a light source, and a microstructure is arranged on the transparent substrate so that light can be uniformly emitted out of the light emitting surface of the transparent substrate through the transparent substrate.

As an optimized solution of the electronic paper display device of the present invention, the micro-structure is a groove formed on the light emitting surface of the transparent substrate.

As an optimal solution of the electronic paper display device of the present invention, the groove is a V-shaped groove.

As an optimal solution of the electronic paper display device of the present invention, the groove is formed by laser engraving.

As a preferable aspect of the electronic paper display device of the present invention, the light source includes an LED lamp.

As a preferable embodiment of the electronic paper display device of the present invention, one of the side surfaces of the transparent substrate is provided with the light source.

As an optimized scheme of the electronic paper display device of the present invention, all the other sides of the transparent substrate are provided with a high reflection film layer.

As a preferable embodiment of the electronic paper display device of the present invention, the transparent substrate is made of glass, quartz, plastic, or resin.

As a preferable embodiment of the electronic paper display device of the present invention, the pixel electrode layer is made of indium tin oxide, aluminum zinc oxide, indium zinc oxide, or chromium tin oxide.

As a preferred embodiment of the electronic paper display device of the present invention, the electronic paper body further has a bottom surface opposite to the display surface, and the bottom surface is provided with the protective film.

The utility model has the advantages that:

the utility model provides an among the electronic paper display device, the drive base plate is transparent, sets up transparent drive base plate in the income light side of electronic paper body, sets up the microstructure on the drive base plate, guarantees that light is evenly jetted out by transparent base plate, guarantees the display effect of this electronic paper display device, replaces current light guide plate with transparent drive base plate, reduces product thickness, reduces product cost, has also saved the laminating process of light guide plate, avoids the production of bubble in the laminating process of light guide plate, improves the product yield; and meanwhile, a light source is arranged on at least one side surface in the circumferential direction of the driving substrate, when the external environment light is dark or no light source exists outside, the light source connected to the driving substrate is turned on, the light emitted by the light source is incident into the electronic paper body after passing through the driving substrate, is reflected by the electronic paper body and is emitted out through the driving substrate, and the display effect of the electronic paper display device is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic diagram of a conventional electronic paper display device;

FIG. 2 is a schematic diagram of another conventional electronic paper display device;

fig. 3 is a schematic view of an electronic paper display device according to an embodiment of the present invention;

fig. 4 is an assembly diagram of an electronic paper display device according to an embodiment of the present invention.

Reference numerals:

1', a driving substrate; 2', an electronic paper body; 3', a light guide plate; 4', LED lamps; 5', optical cement; 6', a protective film; 7', edge sealing glue;

1. a drive substrate; 2. an electronic paper body; 3. a protective film; 4. edge sealing glue; 5. a light source;

11. a microstructure; 12. and (3) FPC.

Detailed Description

In order to make the technical problems, technical solutions adopted and technical effects achieved by the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work 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 the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

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, e.g., as meaning either a fixed connection or a removable connection; 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 in specific cases to those skilled in the art.

As shown in fig. 3, the present embodiment provides an electronic paper display device, which includes an electronic paper body 2 and a driving substrate 1. The driving substrate 1 of the present embodiment is made of a transparent material, so that it has a light-transmitting function. The driving substrate 1 is disposed on a light incident side of the electronic paper body 2, and the light incident side is also a display side of the electronic paper body 2. The side of the driving substrate 1 away from the electronic paper body 2 is the display outside of the electronic paper display device, and the user views the content displayed on the electronic paper body 2 facing the display outside.

At least one side surface in the circumferential direction of the drive substrate 1 is provided with a light source 5. When the external environment light is dark or the external has no light source 5, the light source 5 connected to the driving substrate 1 is turned on, the light emitted by the light source 5 enters the electronic paper body 2 after passing through the driving substrate 1, and is reflected by the electronic paper body 2 and then is emitted out through the driving substrate 1, so that the display effect of the electronic paper display device is improved.

Specifically, the electronic paper body 2 includes a substrate and a common electrode layer. The substrate includes opposing first and second faces. The first surface of the substrate is the display surface. The common electrode layer is arranged on one side of the display surface of the substrate. The driving substrate 1 is disposed on a side of the common electrode layer away from the substrate. The drive substrate 1 includes a transparent substrate and a transparent pixel electrode layer. The pixel electrode layer is located between the transparent substrate and the common electrode layer. A display material layer is arranged between the pixel electrode layer and the common electrode layer. The display material layer is an electrophoretic substance and comprises colored particles and a dielectric solution. When a voltage difference is generated between the pixel electrode layer and the common electrode layer, the colored particles move upward or downward according to the polarity of the electrodes when the polarity of the electrodes is changed. The colored particles move toward the pixel electrode layer or the common electrode layer with charges of opposite polarity to the colored particles. Therefore, the color of the dielectric solution or the colored particles displayed on the common electrode layer can be determined by changing the applied voltage. The specific structures of the electronic paper body 2 and the driving substrate 1 are the prior art, and detailed description is omitted.

Furthermore, the transparent substrate of the driving substrate 1 is provided with the micro structure 11, so that the light reflected to the driving substrate 1 by the electronic paper body 2 is refracted by the micro structure 11 and finally emitted uniformly by the transparent substrate, thereby improving the display effect.

In the embodiment, the driving substrate 1 is transparent, the transparent driving substrate 1 is arranged on the light incident side of the electronic paper body 2, and the microstructures 11 are arranged on the driving substrate 1, so that light rays are uniformly emitted from the transparent substrate, the display effect of the electronic paper display device is ensured, the transparent driving substrate 1 is used for replacing the existing light guide plate, the product thickness is reduced, the product cost is reduced, the laminating process of the light guide plate is also omitted, the generation of bubbles in the laminating process of the light guide plate is avoided, and the product yield is improved; meanwhile, the light source 5 is arranged on at least one side face in the circumferential direction of the driving substrate 1, when the external environment light is dark or the external environment has no light source 5, the light source 5 connected to the driving substrate 1 is turned on, light emitted by the light source 5 enters the electronic paper body 2 after passing through the driving substrate 1, is reflected by the electronic paper body 2 and then is emitted out through the driving substrate 1, and the display effect of the electronic paper display device is further improved.

The electronic paper body 2 further has a bottom surface opposite to the display surface, and the bottom surface is provided with a protective film 3 to protect the electronic paper body 2.

Fig. 4 shows an assembly diagram of the electronic paper display device, which includes preparing a driving substrate 1, processing a microstructure 11 on a light-emitting side of a transparent substrate, attaching a light-in surface of an electronic paper body 2 to the driving substrate 1, binding a FPC12(Flexible Printed Circuit) on the driving substrate 1, attaching a protective film 3 to a bottom surface of the electronic paper body 2, coating an edge-sealing adhesive 4, and attaching a light source 5 (FPC with an LED lamp) to a side surface of the driving substrate 1.

Illustratively, the transparent substrate is made of glass, quartz, plastic, or resin to ensure light transmissivity of the transparent substrate. The pixel electrode layer is made of indium tin oxide, aluminum zinc oxide, indium zinc oxide or chromium tin oxide, so that the pixel electrode layer has high light transmittance.

Optionally, the microstructures 11 are grooves formed on the light-emitting surface of the transparent substrate, so that the light-emitting surface of the transparent substrate forms an uneven surface, and the light reflected to the driving substrate 1 by the electronic paper body 2 is uniformly refracted on the light-emitting surface and then emitted, thereby improving the display effect. Illustratively, the grooves are V-shaped grooves.

Optionally, the grooves are formed by laser engraving, the processing mode is the same as that of the existing light guide plate, new processing equipment is not needed, the processing efficiency is high, and the forming quality is good.

Preferably, the light source 5 includes an LED lamp, which is energy-saving, environment-friendly, and good in color rendering and response speed.

Illustratively, the transparent substrate has a rectangular plate shape. One of the sides of the transparent substrate is provided with a light source 5. The light source 5 is arranged on only one side face, and the assembly process is simple. The display effect of the electronic paper body 2 can be ensured by controlling the brightness of the light source 5.

Optionally, the three remaining sides of the transparent substrate are provided with highly reflective film layers. The highly reflective film layer reflects light emitted from the light source 5. The light emitted by the light source 5 is transmitted by the transparent substrate or reflected by the high-emission film layer for multiple times and then uniformly irradiates the display material layer. Through setting up the high reflection rete for the light that light source 5 sent shines the display material layer as far as possible, and then improves display effect.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The electronic paper display device is characterized by comprising an electronic paper body (2) and a driving substrate (1), wherein the electronic paper body (2) is provided with a display surface, the driving substrate (1) is connected to the display surface of the electronic paper body (2), the driving substrate (1) comprises a transparent substrate and a transparent pixel electrode layer, the pixel electrode layer is located between the transparent substrate and the display surface, at least one side surface in the circumferential direction of the transparent substrate is provided with a light source (5), and a microstructure (11) is arranged on the transparent substrate so that light can be uniformly emitted out of the light-emitting surface of the transparent substrate through the transparent substrate.

2. The electronic paper display device according to claim 1, wherein the microstructure (11) is a groove formed on a light-emitting surface of the transparent substrate.

3. The electronic paper display device of claim 2, wherein the groove is a V-shaped groove.

4. The electronic paper display device of claim 2, wherein the groove is formed using laser engraving.

5. The electronic paper display device according to claim 1, wherein the light source (5) comprises an LED lamp.

6. The electronic paper display device according to claim 1, wherein one of the sides of the transparent substrate is provided with the light source (5).

7. The electronic paper display device of claim 6, wherein the remaining sides of the transparent substrate are provided with a highly reflective film layer.

8. The electronic paper display device of any of claims 1-7, wherein the transparent substrate is made of glass, quartz, plastic, or resin.

9. The electronic paper display device of any of claims 1-7, wherein the pixel electrode layer is made of indium tin oxide, aluminum zinc oxide, indium zinc oxide, or chromium tin oxide.

10. The electronic paper display device according to any one of claims 1 to 7, wherein the electronic paper body (2) further has a bottom surface opposite to the display surface, the bottom surface being provided with a protective film (3).