CN117031849A - Electronic paper display panel, display device and electronic paper equipment - Google Patents

Abstract

The invention discloses an electronic paper display panel, a display device and an electronic paper equipment, and relates to the field of display technology. Among them, the electronic paper display panel includes: a driving substrate and an electronic paper film; the driving substrate includes: a substrate, a pixel electrode layer and a magnetic induction structure, and the substrate is provided with a pixel electrode layer and a magnetic induction structure in sequence from bottom to top; the electronic paper film includes: several Particles are arranged in an array sequentially along the length direction of the substrate; wherein several particles are respectively filled with first ions and second ions along both sides of their horizontal centerline, and any one of the first ions and the second ions has magnetic properties. This invention solves the problem that existing electronic paper needs to use Ag conduction resistance, and uses laser to cut the electronic ink film in half to allow the VCOM of the upper layer to be connected to the VCOM of the lower TFT, which results in complex structure and process flow, and a single color display effect. question.

Description

Electronic paper display panels, display devices and electronic paper equipment

Technical field

The present disclosure relates to the field of display technology, and in particular, to an electronic paper display panel, a display device, and an electronic paper device.

Background technique

E-paper is a new type of display screen that is ultra-thin, rewritable, easy to carry, and can maintain display even when powered off. Its display effect is close to the natural paper effect and avoids reading fatigue. It is currently mostly used in electronic labels, Conference table cards, student badges, subway pull tabs, billboards and other fields, but the core component used in this display is the electronic ink film.

As shown in Figure 1, existing electronic paper requires Ag conduction resistance, and uses a laser to cut the electronic ink film in half to allow the upper VCOM to conduct with the VCOM of the lower TFT, resulting in a complex structure and process flow, and poor color display effects. Single question. No effective solution has yet been proposed for the above-mentioned problems.

Contents of the invention

The purpose of the invention is to provide an electronic paper display panel, a display device and an electronic paper device to solve the above-mentioned problems existing in the prior art.

Technical solution: an electronic paper display panel, including: a drive substrate and an electronic paper film; the drive substrate includes: a substrate, a pixel electrode layer and a magnetic induction structure, and the substrate is provided with the pixel electrode layer and the magnetic induction structure in sequence from bottom to top. Structure; the electronic paper film includes: a plurality of particles arranged in an array sequentially along the length direction of the substrate; wherein the plurality of particles are filled with first ions and second ions respectively along both sides of the horizontal center line, and the Either one of the first ions and the second ions has magnetic properties.

Preferably, a sealant layer and a first optical glue layer are disposed between the electronic paper film and the magnetic induction structure from top to bottom, and a base material layer, a second optical glue layer and a second optical glue layer are disposed on the electronic paper film from bottom to top. Adhesive layer and protective film.

Preferably, the shape of the particles is an elliptical structure.

Preferably, at least one TFT switch is provided on the substrate, and the TFT switch is used to control the magnetic induction structure and/or the pixel electrode layer.

Preferably, the two leads of the magnetic induction structure are electrically connected to the source and drain of the TFT switch respectively.

Preferably, when the source of the TFT switch receives the first signal, the magnetic induction structure forms a first magnetic field to attract the magnetic ones of the first ions and the second ions to move closer to it, causing the electrons to move closer to it. The paper film displays preset colors.

Preferably, when the drain of the TFT switch receives the second signal, the magnetic induction structure forms a second magnetic field to repel the magnetic ones of the first ions and the second ions toward it, causing the electrons to approach it. The paper film displays preset colors.

Preferably, the pixel electrode layer and the magnetic induction structure are arranged in one-to-one correspondence.

In order to achieve the above object, according to another aspect of the present application, a display device is also provided.

A display device according to the present application includes the above-mentioned electronic paper display panel.

In order to achieve the above object, according to another aspect of the present application, an electronic paper device is also provided.

An electronic paper device according to the present application includes the above-mentioned display device or the above-mentioned electronic paper display panel.

Beneficial effects: In the embodiment of the present application, a number of particles are preset and a magnetic induction structure is added, and a number of the particles are filled with first ions and second ions respectively along both sides of the horizontal center line, and the Any one of the first ions and the second ions has magnetic properties, achieving the purpose of displaying different colors, thereby achieving the technical effects of simplifying the structure of electronic paper and controllable color display, thereby solving the problem of existing electronic paper It is necessary to pass the Ag conduction resistance and use a laser to cut the electronic ink film in half to allow the VCOM of the upper layer to be connected to the VCOM of the lower TFT, resulting in technical problems such as complex structure and process flow, and a single color display effect.

Description of the drawings

Figure 1 is a schematic structural diagram of an existing electronic paper display panel;

Figure 2 is a schematic structural diagram of the electronic paper display panel of the present invention.

The reference numbers are: 10. Driving substrate; 101. Base; 102. Pixel electrode layer; 103. Magnetic induction structure; 20. Electronic paper film; 201. Particles; 202. First ion; 203. Second ion; 30. Sealing Adhesive layer; 40, first optical adhesive layer; 50, base material layer; 60, second optical adhesive layer; 70, protective film.

Detailed ways

In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of this application.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that data so used may be interchanged where appropriate for the embodiments of the application described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or apparatus that includes a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

In addition, the terms "installed," "set," "provided," "connected," "connected to," and "socketed" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or between two devices, components or components. internal connectivity between rooms. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figure 2, this application relates to an electronic paper display panel, a display device and an electronic paper device. The electronic paper display panel includes: a driving substrate 10 and an electronic paper film 20; the driving substrate 10 refers to the main component used to control and drive the electronic paper display screen. It is responsible for receiving data signals and converting them into driving signals suitable for electronic paper display to achieve the display of images or text. It can be known that the driving substrate 10 also has other functions such as data reception, signal processing and generation, and power management. The electronic paper film 20 is a material based on electronic paper technology and is used to manufacture electronic paper displays. It is a composite film composed of multiple layers, which contains tiny particles 201 or capsules for display.

The key component of the electronic paper film 20 is tiny charge control particles 201 (also called electronic ink particles 201), which are usually composed of black and white pigments. These particles 201 can change their position and arrangement according to changes in electric field and voltage, thereby presenting different images or text.

The driving substrate 10 includes: a base 101, a pixel electrode layer 102 and a magnetic induction structure 103. The base 101 is provided with the pixel electrode layer 102 and the magnetic induction structure 103 in order from bottom to top;

The substrate 101 can be made of rigid materials such as glass, which can improve the carrying capacity of other film layers on the substrate 101 . Of course, the substrate 101 can also be made of flexible materials such as polyimide (PI), which can improve the overall bending resistance and tensile resistance of the display panel and avoid bending, stretching, and twisting processes. The stress causes the substrate 101 to break, resulting in poor circuit breaking. In practical applications, the material of the substrate 101 can be reasonably selected according to actual needs to ensure that the display panel has good performance.

Preferably, the pixel electrode layer 102 and the magnetic induction structure 103 are arranged in one-to-one correspondence; it can be understood that the pixel electrode layer 102 is composed of a series of tiny conductive electrodes, and each electrode corresponds to each pixel point. Among them, the electrodes can adopt different shapes and arrangements, such as parallel arrangement, cross arrangement or other geometric shapes. The electrodes of each pixel can apply a specific voltage or electric field through a driving signal to control the arrangement of the liquid crystal molecules, thereby determining the degree of light transmission. By adopting a one-to-one corresponding setting method, the best magnetic field control effect can be achieved; of course, it is easy to think that when the positions of the two are slightly displaced or deviated, although the best magnetic field control effect cannot be achieved, it is still possible. Can have color conversion effect.

Specifically, when an electric field is applied to a specific pixel electrode, the liquid crystal molecules will be arranged accordingly according to the direction of the electric field and change their rotation angle to adjust the intensity of light passing through the liquid crystal layer. By appropriately controlling the voltage of each pixel electrode, display effects of different brightness and color can be achieved.

The electronic paper film 20 includes: a plurality of particles 201 arranged in an array along the length direction of the substrate 101;

Wherein, several of the particles 201 are filled with first ions 202 and second ions 203 respectively along both sides of the horizontal center line thereof, and any one of the first ions 202 and the second ions 203 has magnetism. By arranging several particles 201 and filling the first ions 202 and the second ions 203 on both sides of the horizontal center line of the particles 201, it can provide a basis for presenting different colors; at the same time, it can also achieve integration with other components. Cooperate to achieve multiple color conversion effects. In order to ensure a good color conversion effect, either one of the first ions 202 and the second ions 203 is magnetic, thereby achieving the effect of controlling the directional movement of the ions. Wherein, the first ion 202 is an uncharged first ion 202 and the second ion 203 is a metal-charged second ion 203; or the first ion 202 is a metal-charged first ion 202 and the second ion 203 is an uncharged second ion 203. ; Using magnetic ions in any of the colors, it can be achieved that when a voltage signal is applied, the magnetic ions can be brought closer or farther away, thereby showing different colors, thus meeting the needs of multiple colors. Preferably, the first ions 202 are white ions, and the second ions 203 are white ions; by using two color matching methods of black and white ions, a good color presentation effect can be achieved, such as: white, black or gray; of course, it can be understood that , the colors of ions include but are not limited to: red or yellow. Through multiple colors of ions to choose from, corresponding color presentation effects can be achieved, thereby meeting a variety of usage needs, thereby improving the practicality of electronic paper.

Further, when the first ions 202 are uncharged first ions 202 and the second ions 203 are metal-charged second ions 203, and when a positive voltage is applied to the source electrode of the TFT, that is, the S electrode, in the magnetic induction structure 103 ( Ferrite) forms a positive magnetic field. At this time, the magnetic field will attract the metal ellipsoid downward, and the uncharged white will upward, thereby realizing the display of white; when a negative voltage is applied to the S pole, a magnetic induction structure 103 (Ferrite) is formed. A reverse magnetic field. At this time, the magnetic field will repel the charged metal ions and turn upward. If the uncharged white is facing downward, black will appear. When no voltage is applied to the pixel electrode layer 102 (Pixel), the magnetic induction structure 103 ( Ferrite) will not generate a magnetic field and will not affect the turning of the particles 201, thereby achieving the effect of power-off retention. Preferably, the intensity of the magnetic induction structure 103 (Ferrite) is changed by changing the driving voltage of the pixel electrode layer 102, thereby achieving a grayscale display effect.

Further, when the first ions 202 are metallic first ions 202 and the second ions 203 are uncharged second ions 203, and when a positive voltage is applied to the source electrode of the TFT, that is, the S electrode, in the magnetic induction structure 103 ( Ferrite) forms a positive magnetic field. At this time, the magnetic field will attract the metal ellipsoid downward, and the uncharged black will be upward, thereby achieving black display; when a negative voltage is applied to the S pole, a magnetic induction structure 103 (Ferrite) is formed. A reverse magnetic field, at this time the magnetic field will repel the metal ions and turn upward, and the metal ions will be white upward, which will display white; when no voltage is applied to the pixel electrode layer 102 (Pixel), the magnetic induction structure 103 (Ferrite) ), no magnetic field will be generated, and the direction of the particles 201 will not be affected, so that the effect of power-off maintenance can be achieved. Preferably, the intensity of the magnetic induction structure 103 (Ferrite) is changed by changing the driving voltage of the pixel electrode layer 102, thereby achieving a grayscale display effect. Therefore, different magnetic field force directions of the paper film particles correspond to different colors. The rotational movement caused by the magnetic field force responds faster than the up and down movement of the electric field force. Therefore, a faster response speed can be achieved on the basis of realizing colors, and the response speed has doubled. The color rendering amount is better, and the product performance is better.

The present invention is different from the existing structure in that it reduces the number of VCOM electrodes on the upper layer, thereby eliminating the need to apply Ag to conduct the VCOM on the upper and lower layers.

The present invention achieves the effect of driving display by driving electronic ink particles 201 through magnetic field driving means or solutions.

It can be seen from the above description that this application achieves the following technical effects:

In the embodiment of the present application, a number of particles 201 are preset and a magnetic induction structure 103 is added, and several particles 201 are filled with first ions 202 and second ions 203 respectively along both sides of the horizontal center line. And either one of the first ions 202 and the second ions 203 has magnetism, achieving the purpose of displaying different colors, thereby achieving the technical effect of simplifying the electronic paper structure and controllable color display, thereby solving the current problem. Some electronic papers require Ag conductive resistance and use a laser to cut the electronic ink film in half to allow the VCOM of the upper layer to be connected to the VCOM of the lower TFT. This leads to technical problems such as complex structure and process flow, and a single color display effect.

Furthermore, a sealant layer 30 and a first optical adhesive layer 40 are disposed between the electronic paper film 20 and the magnetic induction structure 103 from top to bottom, and a substrate is disposed on the electronic paper film 20 from bottom to top. layer 50, the second optical glue layer 60 and the protective film 70. It can be understood that by providing the sealant layer 30, a good sealing effect can be achieved, thereby improving the service life; by providing the first optical adhesive layer 40 and the second optical adhesive layer 60, a good inter-layer adhesion can be achieved effect, thereby ensuring the stability of the structure; preferably, the first optical glue layer 40 and the second optical glue layer 60 are OCA liquid optical glue. By providing the base material layer 50, the structural strength can be improved, and at the same time, a good inter-layer coordination effect can be achieved, thereby achieving a good adhesion effect for other layers. Preferably, the base material layer 50 is a PET base material. The PET substrate is an electronic ink support film, and the PET substrate has good physical properties, such as transparency, flexibility, and mechanical strength. By providing the protective film 70 , that is, the PS protective film 70 , a good protection effect can be achieved to avoid damage to the internal structure; at the same time, a good surface water blocking effect can be achieved.

Further, the shape of the particles 201 is an elliptical structure. It can be understood that by preparing the shape of the particles 201 into an elliptical structure, the effect of reducing the occupied lateral area can be achieved, thereby achieving the effect of increasing the number of particles 201 under the same area, that is, the effect of the elliptical particles 201 in the liquid The arrangement is more compact, and thus has stronger anti-settling ability and stability; the use of elliptical particles 201 is more sensitive to external electric fields because they have different charge distributions under electric fields along different directions.

Secondly, the shape of the elliptical particles 201 can optimize the scattering and reflection characteristics of light, thereby improving the contrast of the display. Compared with spherical particles 201, elliptical particles 201 can better control the propagation direction of light when absorbing and reflecting light, reducing interference from the background or surrounding environment.

Thirdly, because of its different horizontal and vertical sizes, it can create more gray levels, making the image clearer and more realistic, thereby improving the color display effect.

Finally, since the elliptical particles 201 have a larger surface area, they settle slower in the liquid than the spherical particles 201 . This means that the elliptical particles 201 can be better suspended in the liquid and more easily distributed evenly across the entire display screen, reducing issues of unevenness or vertical offset.

It is known that there are many methods to shape the particles 201 into an elliptical structure, including but not limited to: template method, stretching method or chemical synthesis method.

Further, at least one TFT switch is provided on the substrate 101, and the TFT switch is used to control the magnetic induction structure 103 and/or the pixel electrode layer 102. It can be understood that by providing at least one TFT switch, the effect of providing a switching signal can be achieved, thereby achieving the effect of controlling the action of the magnetic induction structure 103 and/or the pixel electrode layer 102, and thereby achieving the effect of driving the directional movement of the particles 201. Preferably, the number of TFT switches is one or two. While achieving the corresponding functions, it can also achieve the effect of reducing structural redundancy. If it is a TFT switch, the magnetic induction structure 103 and the pixel electrode layer 102 need to be controlled simultaneously. If there are two TFT switches, the magnetic induction structure 103 and the pixel electrode layer 102 can be controlled independently.

When only one TFT switch is included, the TFT switch can exist in the form of a gate signal line, a magnetic field signal line, and an electric field signal line in the drive substrate 10 , that is, a TFT switch includes a gate signal line, a magnetic field signal line, and a magnetic field signal line. signal line, an electric field signal line; among them, the magnetic field signal line is used to control the magnetic induction structure 103 to generate a predetermined magnetic field; the electric field signal line is used to control the voltage value of the voltage signal received by the pixel electrode layer 102; the gate signal line is The magnetic field signal line and the electric field signal line are connected at the same time, which is used to conduct or disconnect the magnetic field signal line and the electric field signal line at the same time.

Further, the two leads of the magnetic induction structure 103 are electrically connected to the source and drain of the TFT switch respectively. It can be understood that by electrically connecting the two leads of the magnetic induction structure 103 to the source and drain of the TFT switch respectively, a good electrical signal transmission effect can be achieved, thereby ensuring a good electric driving effect.

Further, when the source of the TFT switch receives the first signal, the magnetic induction structure 103 forms a first magnetic field to attract the magnetic ones of the first ions 202 and the second ions 203 to approach it. , causing the electronic paper film 20 to display a preset color. It can be understood that when the first signal is a positive voltage, when a positive voltage is applied to the source of the TFT switch, the magnetic induction structure 103 forms a positive magnetic field to attract the first ions 202 and the second ions 203 If the first ion 202 is a charged ion at this time, the positive magnetic field will attract the metal ellipsoid downward, and the uncharged second ion 203 will be attracted to it. If the second ion 203 is a charged ion at this time, the positive magnetic field will attract the metal-bearing ellipse downward, and the uncharged first ion 202 will move upward, thereby achieving a white display; it can be achieved Various color conversion effects.

Further, when the drain of the TFT switch receives the second signal, the magnetic induction structure 103 forms a second magnetic field to repel the magnetic ones of the first ions 202 and the second ions 203 that approach it. , causing the electronic paper film 20 to display a preset color. It can be understood that when the second signal is a negative voltage, a negative voltage is applied to the source of the TFT switch, and the magnetic induction structure 103 forms a reverse magnetic field to attract the first ions 202 and the second ions 203 The magnetic ones are repelled away from it, causing the electronic paper film 20 to display the preset color; if the first ions 202 are charged ions at this time, the reverse magnetic field will repel the metal-carrying ellipsoid downward, and the charged first ions 202 will upward, thereby achieving white display; if the second ions 203 are charged ions at this time, the reverse magnetic field will repel the metal-carrying ellipsoid downward, and the charged second ions 203 will move upward, thereby achieving black display; it can achieve a variety of Color conversion effect.

Further, the pixel electrode layer 102 includes a conductive coil, and the conductive coil includes at least one of a spiral coil and a zigzag coil. It can be understood that by providing a conductive coil, good energy storage and release effects can be achieved. Among them, with a variety of shapes to choose from, flexible selection can be achieved.

The present application also relates to a display device, including the electronic paper display panel as described above.

The present application also relates to an electronic paper device, including the display device as described above or the electronic paper display panel as described above.

The invention also has the following beneficial effects:

1. The present invention can solve the problem that the electronic ink film is limited by a single channel, which leads to the risk of material preparation and thus affects production;

2. When laminating the existing electronic ink film, you need to pay attention to the control of time and temperature, otherwise it will easily lead to over-drying or over-humidity problems;

3. By making a layer of Ferrite film on the side of the pixel electrode, the formation and direction switching of Ferrite can be directly controlled through the pixel electrode.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention. These equivalent transformations all belong to the protection scope of the present invention.

Claims (10)

1. The electronic paper display panel, its characterized in that includes: a drive substrate (10) and an electronic paper film (20);

the drive substrate (10) includes: the pixel electrode structure comprises a substrate (101), a pixel electrode layer (102) and a magnetic induction structure (103), wherein the pixel electrode layer (102) and the magnetic induction structure (103) are sequentially arranged on the substrate (101) from bottom to top;

the electronic paper film (20) comprises: a plurality of particles (201) which are sequentially arranged in an array along the length direction of the substrate (101);

wherein a plurality of the particles (201) are respectively filled with first ions (202) and second ions (203) along both sides of a horizontal center line thereof, and any one of the first ions (202) and the second ions (203) has magnetism.

2. The electronic paper display panel according to claim 1, wherein a sealant layer (30) and a first optical adhesive layer (40) are sequentially arranged between the electronic paper film (20) and the magnetic induction structure (103) from top to bottom, and the electronic paper film (20) is sequentially provided with a substrate layer (50), a second optical adhesive layer (60) and a protective film (70) from bottom to top.

3. The electronic paper display panel according to claim 1, characterized in that the particles (201) are in the shape of an oval structure.

4. An electronic paper display panel according to claim 1, characterized in that at least one TFT switch is provided on the substrate (101), said TFT switch being used for controlling the magnetic induction structure (103) and/or the pixel electrode layer (102).

5. The electronic paper display panel according to claim 4, wherein two leads of the magnetic induction structure (103) are electrically connected to a source and a drain of the TFT switch, respectively.

6. The electronic paper display panel according to claim 5, wherein when the source electrode of the TFT switch receives the first signal, the magnetic induction structure (103) forms a first magnetic field to attract the first ions (202) and the second ions (203) to approach each other magnetically, so that the electronic paper film (20) displays a preset color.

7. The electronic paper display panel according to claim 5, wherein when the drain electrode of the TFT switch receives the second signal, the magnetic induction structure (103) forms a second magnetic field to repel the first ions (202) and the second ions (203) from being magnetically close thereto, so that the electronic paper film (20) displays a predetermined color.

8. The electronic paper display panel according to claim 1, wherein the pixel electrode layer (102) and the magnetic induction structure (103) are arranged in a one-to-one correspondence.

9. A display device comprising the electronic paper display panel according to any one of claims 1 to 8.

10. An electronic paper device comprising the display device of claim 9 or the electronic paper display panel of any one of claims 1 to 8.