CN116149105A - Electronic paper display panel, display device and driving method - Google Patents

Abstract

The embodiment of the invention discloses an electronic paper display panel, a display device and a driving method. In a specific embodiment, the electronic paper display panel comprises a first substrate, a second substrate and a pixel defining part positioned between the first substrate and the second substrate, the pixel defining part defines a plurality of pixel units, the pixel units comprise an electronic ink layer positioned between the first substrate and the second substrate, the electronic ink layer comprises black charged particles, the first substrate comprises a first substrate and a reflecting layer arranged on the first substrate, the second substrate comprises a second substrate and a first electrode arranged on the second substrate, at least one pixel unit comprises a plurality of second electrodes arranged on the reflecting layer, and at least one part of the second electrodes is provided with a color resistance layer on one side facing or far away from the first substrate. The embodiment can realize color display while shortening the response time of electronic paper display, and further can realize color display with adjustable color saturation.

Description

Electronic paper display panel, display device and driving method

Technical Field

The invention relates to the technical field of display. And more particularly, to an electronic paper display panel, a display device, and a driving method.

Background

An Electronic Paper (Electronic Paper) display panel is also called an Electronic ink screen, is an Electronic display device with visual effect similar to Paper, and has the characteristics of easy reading, convenient carrying, low power consumption and the like. The existing electronic paper display panel can only have two colors of black and white, and has the problems of single color and longer response time.

Disclosure of Invention

The invention aims to provide an electronic paper display panel, a display device and a driving method, which are used for solving at least one of the problems in the prior art.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the first aspect of the invention provides an electronic paper display panel, comprising a first substrate, a second substrate and a pixel defining part arranged between the first substrate and the second substrate, wherein the pixel defining part defines a plurality of pixel units, the pixel units comprise an electronic ink layer arranged between the first substrate and the second substrate, the electronic ink layer comprises black charged particles, the first substrate comprises a first substrate and a reflecting layer arranged on the first substrate, the second substrate comprises a second substrate and a first electrode arranged on the second substrate, at least one pixel unit comprises a plurality of second electrodes arranged on the reflecting layer, and at least one part of the second electrodes is provided with a color resistance layer on one side facing towards or away from the first substrate.

Optionally, the black charged particles are configured to:

the first electrode and the second electrode are driven to move so as to be gathered on the first electrode or gathered on all the second electrodes, and the pixel unit displays black; or (b)

And the second electrodes which are driven by the first electrodes and the second electrodes to move so as to gather at part of the second electrodes provided with the color resistance layers realize that the pixel units display colors corresponding to the color resistance layers of the other second electrodes provided with the color resistance layers.

Optionally, at least one of the second electrodes is not provided with a color resist layer.

Optionally, the black charged particles are further configured to:

the first electrode and the second electrode are driven to move so as to gather on the second electrode with the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The first electrode and the second electrode are driven to move so as to gather on all the second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the second electrode which is driven by the first electrode and the second electrode to move so as to gather at least part of the second electrode without the color resistance layer realizes that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

Optionally, the color resistance layer includes a first color resistance layer, a second color resistance layer and a third color resistance layer, at least one second electrode is provided with the first color resistance layer, at least one second electrode is provided with the second color resistance layer, and at least one second electrode is provided with the third color resistance layer.

Optionally, the plurality of second electrodes are provided with a first color resist layer, the plurality of second electrodes are provided with a second color resist layer, and the plurality of second electrodes are provided with a third color resist layer.

Optionally, the orthographic projection areas of the second electrodes with the first color resistance layer on the first substrate are the same, the orthographic projection areas of the second electrodes with the second color resistance layer on the first substrate are the same, and the orthographic projection areas of the second electrodes with the third color resistance layer on the first substrate are the same.

Optionally, the plurality of second electrodes in at least one of the pixel units are arranged in a matrix or column.

Optionally, at least one pixel unit includes a plurality of reflective electrodes disposed on the first substrate, the reflective electrodes are multiplexed into the reflective layer and the second electrode, and the color resist layer is disposed on a side of the reflective electrode away from the first substrate.

Optionally, the pixel defining portion is disposed between adjacent pixel units, and no pixel defining portion is disposed within the pixel unit.

Optionally, the first substrate further includes a driving circuit layer, and the driving circuit layer includes a plurality of thin film transistors connected to the plurality of second electrodes in a one-to-one correspondence.

The second aspect of the invention provides an electronic paper display device, which comprises the electronic paper display panel provided by the first aspect of the invention.

A third aspect of the present invention provides a driving method for driving the electronic paper display panel provided in the first aspect of the present invention, the method comprising:

according to the acquired display data, a driving voltage is applied to the second electrode such that:

the black charged particles in at least one pixel unit move to be gathered on the first electrode or all the second electrodes, so that the pixel unit displays black; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode of the second electrode with the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the second electrodes with the color resistance layers; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode with a part of the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The black charged particles in at least one pixel unit move to be gathered on all second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the black charged particles in at least one pixel unit move to be gathered on the second electrode at least partially without the color resistance layer, so that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

The beneficial effects of the invention are as follows:

the technical scheme of the invention shortens the response time of electronic paper display, can realize color display, and further can realize color display with adjustable color saturation.

Drawings

The following describes the embodiments of the present invention in further detail with reference to the drawings.

Fig. 1 is a schematic diagram of an electronic paper display panel according to an embodiment of the invention.

Fig. 2 is another schematic diagram of an electronic paper display panel according to an embodiment of the present invention.

Fig. 3 shows a schematic view of the AA cross-section of fig. 2.

Fig. 4 shows a schematic diagram of a display state of the pixel unit.

Fig. 5 shows a schematic diagram of another display state of the pixel unit.

Fig. 6 shows a schematic diagram of another display state of the pixel unit.

Fig. 7 shows a schematic diagram of another display state of the pixel unit.

Fig. 8 shows a schematic diagram of another display state of the pixel unit.

Fig. 9 shows a schematic diagram of another display state of the pixel unit.

Fig. 10 shows a schematic diagram of another display state of the pixel unit.

Fig. 11 shows a schematic diagram of another display state of the pixel unit.

Fig. 12 shows a schematic diagram of another display state of the pixel unit.

Fig. 13 shows a schematic diagram of another display state of the pixel unit.

Detailed Description

The terms "on … …", "formed on … …" and "disposed on … …" as used herein may mean that one layer is formed directly on or disposed on another layer, or that one layer is formed indirectly on or disposed on another layer, i.e., that other layers are present between the two layers.

It should be noted that although the terms "first," "second," etc. may be used herein to describe various elements, components, elements, regions, layers and/or sections, these elements, components, elements, regions, layers and/or sections should not be limited by these terms. Rather, these terms are used to distinguish one component, member, element, region, layer and/or section from another. Thus, for example, a first component, a first member, a first element, a first region, a first layer, and/or a first portion discussed below could be termed a second component, a second member, a second element, a second region, a second layer, and/or a second portion without departing from the teachings of the present invention.

In the present invention, unless otherwise indicated, the term "co-layer arrangement" is used to mean that two layers, components, members, elements or portions may be formed by the same manufacturing process (e.g., patterning process, etc.), and that the two layers, components, members, elements or portions are generally formed of the same material. For example, the two or more functional layers are arranged in the same layer, meaning that the functional layers arranged in the same layer may be formed using the same material layer and the same manufacturing process, so that the manufacturing process of the display substrate may be simplified.

In the present invention, the expression "patterning process" generally includes the steps of coating of photoresist, exposure, development, etching, stripping of photoresist, and the like, unless otherwise specified. The expression "one patterning process" means a process of forming a patterned layer, feature, component, etc. using a single mask.

The present invention relates to an electronic paper display panel, and more particularly to an electronic paper display panel comprising an array substrate and a cover plate, and a pixel defining portion disposed between the array substrate and the cover plate, wherein the pixel defining portion defines a plurality of pixel units, the pixel units include an electronic ink layer disposed between the array substrate and the cover plate, the electronic ink layer is disposed in a sealed cavity formed by the array substrate, the cover plate and the pixel defining portion, the electronic ink layer includes an electrophoretic liquid, a plurality of charged black particles and a plurality of charged white particles, wherein the charged black particles and the charged white particles have different polarities, for example, the charged black particles have a negative polarity, the charged white particles have a positive polarity, the array substrate includes a first substrate and a driving circuit layer disposed on the first substrate, each pixel unit includes a pixel electrode disposed on the driving circuit layer and connected to a Thin Film Transistor (TFT), the cover plate includes a second substrate and a common electrode disposed on the second substrate, the common electrode covers the electronic paper display panel over the whole surface, and the pixel electrodes of each pixel unit are independent, and the charged black particles and the charged white particles and the charged black particles and the white particles and the charged black particles and the white particles are moved to the pixel electrode to the eye side. On the one hand, the mode has the problem of single color, on the other hand, the electronic ink layer contains black and white particles, and when the display is switched, the two particles move relatively, and collision and conflict can occur, so that the response time of the electronic paper display panel is longer.

In view of this, an embodiment of the present invention provides an electronic paper display panel including a first substrate, a second substrate, and a pixel defining portion between the first substrate and the second substrate, the pixel defining portion defining a plurality of pixel units including an electronic ink layer between the first substrate and the second substrate, the electronic ink layer including black colored charged particles, the first substrate including a first substrate and a reflective layer disposed on the first substrate, the second substrate including a second substrate and a first electrode disposed on the second substrate, at least one of the pixel units including a plurality of second electrodes disposed on the reflective layer, wherein at least a portion of the second electrode is provided with a color blocking layer (the color blocking layer may also be referred to as a filter layer or a color filter layer) on a side facing or away from the first substrate.

On the one hand, in the electronic paper display panel provided in the embodiment, the electronic ink layer of the pixel unit only contains the black charged particles, so that the response time of electronic paper display can be shortened.

On the other hand, based on the above structure, the display mode of the electronic paper display panel provided in this embodiment includes:

when the pixel unit is required to display black, the black particles in the pixel unit can be controlled to move to be accumulated at the first electrode (or the black particles move to the first electrode side) serving as the common electrode by applying a voltage to the second electrode serving as the pixel electrode of the pixel unit, or the black particles in the pixel unit can be controlled to move to be accumulated at all the second electrodes serving as the pixel electrode, so that the human eye can see that the pixel unit displays black after the pixel unit reflects ambient light, for example, the voltage of the first electrode serving as the common electrode is 0V, the black particles are negative or negatively charged, and the black particles can be accumulated at the first electrode by applying a negative voltage to all the second electrodes, or the black particles can be accumulated at all the second electrodes by applying a positive voltage to all the second electrodes.

When the pixel unit is required to display color, the second electrode serving as the pixel electrode of the pixel unit is applied with voltage to control the black charged particles in the pixel unit to move so as to gather at the second electrode with the color resistance layer, so that after the pixel unit reflects ambient light, eyes can see the color corresponding to the color resistance layer of the second electrode with the color resistance layer without gathering the black charged particles, for example, one part of the second electrodes is provided with the red color resistance layer, the other part of the second electrodes is not provided with the color resistance layer, the voltage of the first electrode is 0V, the black charged particles are negative, and the pixel unit can display red by applying positive voltage to the second electrode without providing the color resistance layer, or applying positive voltage to the second electrode without providing the color resistance layer and applying negative voltage to the second electrode with the red color resistance layer, so that the black charged particles gather at the second electrode without providing the color resistance layer.

In the case where only a part of the second electrodes is provided with the color resist layer, when the pixel unit is required to display white color, the movement of the black color particles in the pixel unit can be controlled by applying a voltage to the second electrode of the pixel unit as the pixel electrode to gather at the second electrode provided with the color resist layer, so that the white color is seen by the human eye after the pixel unit reflects ambient light (assuming that the ambient light is white light), for example, among a plurality of second electrodes, one part of the second electrodes is provided with the color resist layer, the other part of the second electrodes is not provided with the color resist layer (the second electrode without the color resist layer is in direct contact with the electronic ink layer), the voltage of the first electrode is 0V, and the black color particles are negative in polarity, and the white color display of the pixel unit can be realized by applying a positive voltage to the second electrode provided with the color resist layer, or applying a positive voltage to the second electrode provided with the color resist layer and applying a negative voltage to the second electrode without the color resist layer, so that the black color particles gather at the second electrode provided with the color resist layer.

Therefore, in the electronic paper display panel provided by the embodiment, the pixel unit is provided with the plurality of second electrodes serving as the pixel electrodes, and at least part of the second electrodes are provided with the color resistance layer, so that color display can be realized.

In combination with the above description of the display mode of the electronic paper display panel, in one possible implementation, the black charged particles are configured to:

the first electrode and the second electrode are driven to move so as to be gathered on the first electrode or gathered on all the second electrodes, and the pixel unit displays black; or (b)

And the second electrodes which are driven by the first electrodes and the second electrodes to move so as to gather at part of the second electrodes provided with the color resistance layers realize that the pixel units display colors corresponding to the color resistance layers of the other second electrodes provided with the color resistance layers.

In one possible implementation, the pixel defining portions are disposed between adjacent pixel units, and no pixel defining portions are disposed within the pixel units. That is, in the present embodiment, the pixel unit is defined by the pixel defining portion, that is, the pixel defining portion is provided between the adjacent pixel units, and the pixel defining portion is not provided inside the pixel unit including the plurality of pixel electrodes. In another aspect, a pixel unit in an existing electronic paper display panel includes a pixel electrode, where the pixel unit in the electronic paper display panel provided by the present embodiment includes a plurality of pixel electrodes or a group of pixel electrodes, a pixel defining portion is disposed between two adjacent pixel electrodes in the existing electronic paper display panel, and a pixel defining portion is disposed between two adjacent groups of pixel electrodes in the electronic paper display panel provided by the present embodiment, and no pixel defining portion is disposed between the pixel electrodes in the group.

In a specific example, the first substrate and the second substrate are each, for example, a glass substrate.

In a specific example, the first electrode as the common electrode covers the electronic paper display panel over the whole surface, that is, the common electrode voltage of each pixel unit is the same, and the first electrode as the common electrode and the second electrode as the pixel electrode are respectively metal oxide electrodes with high transparency such as Indium Tin Oxide (ITO).

In a specific example, the reflective layer is, for example, a metal reflective layer, and an insulating layer, for example, an inorganic insulating layer such as silicon oxide (SiO 2), silicon nitride (SiNx), or silicon oxynitride (SiOxNy), is provided between the second electrodes and the reflective layer to ensure isolation between the plurality of second electrodes.

In one possible implementation manner, the first substrate further includes a driving circuit layer, and the driving circuit layer includes a plurality of thin film transistors connected to the plurality of second electrodes in a one-to-one correspondence. Therefore, voltages can be independently applied to the plurality of second electrodes in the pixel unit, and switching of display colors of the pixel unit is ensured.

In one possible implementation manner, at least one pixel unit includes a plurality of reflective electrodes disposed on the first substrate, the reflective electrodes are multiplexed into the reflective layer and the second electrode, and the color resistance layer is disposed on a side of the reflective electrode away from the first substrate.

For example, the reflective electrode is a metal electrode with high reflectivity, and the material is a metal such as silver (Ag) or molybdenum (Mo) or an alloy thereof. Therefore, the reflective electrode can be used for controlling the black charged particles of the pixel electrode and reflecting the ambient light of the reflective layer, so that the thickness of the first substrate is reduced.

In one possible implementation, the plurality of second electrodes in at least one of the pixel units are arranged in a matrix or column.

For example, as shown in fig. 1, the pixel unit in the electronic paper display panel provided in this embodiment may include four second electrodes 101, 102, 103 and 104 arranged in a matrix, where in fig. 1, the second electrodes 101, 102, 103 and 104 are respectively connected to one thin film transistor 105 correspondingly, for example, a gate electrode of the thin film transistor 105 is connected to a scan line 106, a first electrode of the source electrode is connected to a data line 107, and a second electrode of the drain electrode is connected to the second electrode as a pixel electrode, and a dotted line box in fig. 1 is a pixel unit area defined by a pixel defining portion.

For example, as shown in fig. 2, the pixel unit in the electronic paper display panel provided in this embodiment may further include four second electrodes 201, 202, 203 and 204 arranged in a column, where in fig. 2, the second electrodes 201, 202, 203 and 204 are respectively connected to one thin film transistor correspondingly, for example, a gate electrode of the thin film transistor is connected to a scan line, a first electrode of the source electrode is connected to a data line, and a second electrode of the drain electrode is connected to the second electrode as a pixel electrode, and a dotted line box in fig. 2 is a pixel unit area defined by a pixel defining portion.

In one possible implementation, at least one of the second electrodes is not provided with a color resist layer.

In one possible implementation, further, the charged black particles are further configured to:

the first electrode and the second electrode are driven to move so as to gather on the second electrode with the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The first electrode and the second electrode are driven to move so as to gather on all the second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the second electrode which is driven by the first electrode and the second electrode to move so as to gather at least part of the second electrode without the color resistance layer realizes that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

Thus, a white display and a color display with adjustable color saturation can be realized, and the following specific examples will be exemplified.

In one possible implementation, the color resist layer includes a first color resist layer, a second color resist layer, and a third color resist layer, at least one second electrode is provided with the first color resist layer, at least one second electrode is provided with the second color resist layer, and at least one second electrode is provided with the third color resist layer. Thus, a multi-color display of a single pixel unit can be realized, for example, the first color resist layer is a red color resist layer, the second color resist layer is a green color resist layer, and the third color resist layer is a blue color resist layer, which will be exemplified in the following specific examples.

Based on the structure of the above-described implementation, in a specific example, for example, as shown in fig. 3, a pixel unit defined by the pixel defining portion 309 includes four reflective electrodes 301, 302, 303, and 304 arranged in a column on the first substrate 321, in fig. 3, the pixel unit is defined by the pixel defining portion 305, a first electrode 307 as a common electrode is disposed on the second substrate 322 above the electronic ink layer 306, the voltage of the first electrode 307 is 0V, the black color electric particles are negative, a red color resist 311 is disposed on the reflective electrode 301, a green color resist 312 is disposed on the reflective electrode 302, a blue color resist 313 is disposed on the reflective electrode 303, and the reflective electrode 304 is not disposed but directly contacts the electronic ink layer 306, and in this specific example, the display manner of the electronic paper display panel includes:

as shown in fig. 4, the pixel cell displays black by applying a negative voltage to the reflective electrodes 301, 302, 303, and 304 such that the black charged particles are collected at the first electrode 307, none of the reflective electrodes 301, 302, 303, and 304 reflect ambient light, or as shown in fig. 5, the pixel cell displays black by applying a positive voltage to the reflective electrodes 301, 302, 303, and 304 such that the black charged particles are collected at the reflective electrodes 301, 302, 303, and 304, none of the reflective electrodes 301, 302, 303, and 304 reflect ambient light.

As shown in fig. 6, by applying a positive voltage to the reflective electrodes 302, 303, and 304 so that the black charged particles are collected at the reflective electrodes 302, 303, and 304, the reflective electrode 301 can reflect ambient light, realizing that the pixel cell displays a higher saturation red; as shown in fig. 7, by applying a positive voltage to the reflective electrodes 302 and 303 so that the black charged particles are collected at the reflective electrodes 302 and 303, both the reflective electrodes 301 and 304 can reflect ambient light, realizing that the pixel cell displays a lower saturation red.

As shown in fig. 8, by applying a positive voltage to the reflective electrodes 301, 303, and 304 so that the black charged particles are collected at the reflective electrodes 301, 303, and 304, the reflective electrode 302 can reflect ambient light, realizing that the pixel cell displays a higher saturation green; as shown in fig. 9, by applying a positive voltage to the reflective electrodes 301 and 303 so that the black charged particles are collected at the reflective electrodes 301 and 303, the reflective electrodes 302 and 304 can both reflect ambient light, realizing that the pixel cell displays a lower saturation green.

As shown in fig. 10, by applying a positive voltage to the reflective electrodes 301, 302, and 304 so that the black charged particles are collected at the reflective electrodes 301, 302, and 304, the reflective electrode 303 can reflect ambient light, realizing that the pixel cell displays higher saturation blue; as shown in fig. 11, by applying a positive voltage to the reflective electrodes 301 and 302 so that the black charged particles are collected at the reflective electrodes 301 and 302, both the reflective electrodes 303 and 304 can reflect ambient light, realizing that the pixel cell displays blue with lower saturation.

It is understood that the front projection area of the reflective electrode 304 on the first substrate 321 may be larger than the front projection areas of the reflective electrodes 301, 302, and 303 on the first substrate 321, or may be equal to or smaller than the front projection areas of the reflective electrodes 301, 302, and 303 on the first substrate 321, and that the smaller the front projection area of the reflective electrode 304 on the first substrate 321 has less influence on the saturation of the display solid color, for example, as shown in fig. 2 and 3, the front projection area of the reflective electrode 304 on the first substrate 321 is substantially equal to the front projection areas of the reflective electrodes 301, 302, and 303 on the first substrate 321.

As shown in fig. 12, by applying a positive voltage to the reflective electrodes 301, 302, and 303 so that the black charged particles are collected at the reflective electrodes 301, 302, and 303, the reflective electrode 304 can reflect ambient light, realizing that the pixel cell displays white of the first gray scale; by designing the forward projection area ratio of the reflective electrodes 301, 302, and 303 on the first substrate 321 and the thickness of the red color resist layer 311, the green color resist layer 312, and the blue color resist layer 313, it is possible to realize that the pixel cell displays white when the reflective electrodes 301, 302, and 303 can each reflect ambient light, in which case, as shown in fig. 13, by applying a positive voltage to the reflective electrode 304, black charged particles are caused to collect on the reflective electrode 304, the reflective electrodes 301, 302, and 303 can each reflect ambient light, and the pixel cell displays white of a second gray scale, which is different from the first gray scale in design.

In addition to the above implementation of black, higher saturation red, lower saturation red, higher saturation green, lower saturation green, higher saturation blue, lower saturation blue, and white of two gray scales, the display manner of the electronic paper display panel of this specific example may further include displaying a combination color of higher saturation and lower saturation of any two of the three colors of red, green, and blue, for example, by applying a positive voltage to the reflective electrodes 301 and 304 so that the black charged particles are collected at the reflective electrodes 301 and 304, the reflective electrodes 302 and 303 may reflect ambient light, and the pixel unit may display a combination color of higher saturation and blue green; by applying a positive voltage to the reflective electrode 301 such that charged black particles are collected at the reflective electrode 301, the reflective electrodes 302, 303 and 304 can reflect ambient light, enabling the pixel cell to display a lower saturation cyan combined color.

In one possible implementation, a plurality of second electrodes are provided with a first color resist layer, a plurality of second electrodes are provided with a second color resist layer, and a plurality of second electrodes are provided with a third color resist layer. Thus, color display with adjustable brightness can be realized. For example, assuming that the reflective electrode 301 in fig. 3 is formed as two independent reflective sub-electrodes and red color resists are disposed on the two reflective sub-electrodes, the pixel cell can display a higher brightness red color by making both reflective sub-electrodes reflective to ambient light, and the pixel cell can display a lower brightness red color by making only one of the two reflective sub-electrodes reflective to ambient light.

In one possible implementation manner, the orthographic projection areas of the plurality of second electrodes provided with the first color resistance layer on the first substrate are the same, the orthographic projection areas of the plurality of second electrodes provided with the second color resistance layer on the first substrate are the same, and the orthographic projection areas of the plurality of second electrodes provided with the third color resistance layer on the first substrate are the same. Thereby, the brightness of the color display is facilitated to be controlled. For example, assuming that the reflective electrode 301 in fig. 3 is formed as two independent reflective sub-electrodes, the orthographic projection areas of the two reflective sub-electrodes on the first substrate 321 are the same.

In one possible implementation, a plurality of the second electrodes are not provided with a color resist layer. Therefore, color display with various saturation and gray scale adjustable white display can be realized. For example, assuming that the reflective electrode 304 in fig. 3 is formed as two independent reflective sub-electrodes and neither of the reflective sub-electrodes is provided with a color resist layer, the pixel cell may be made to display a lower saturation red by making both the reflective electrode 301 and both the reflective sub-electrodes reflective to ambient light, and the pixel cell may be made to display a higher saturation red by making both the reflective electrode 301 and one of the reflective sub-electrodes reflective to ambient light; the pixel cell may also be configured to display a first gray level of white by having both reflective sub-electrodes reflect ambient light, and to display another gray level of white less than the first gray level by having only one of the two reflective sub-electrodes reflect ambient light.

In one possible implementation, the orthographic projection areas of the plurality of second electrodes without the color resistance layer on the first substrate are the same. Thereby, it is convenient to control the saturation of the color display and the gray scale of the white display. For example, assuming that the reflective electrode 304 in fig. 3 is formed as two independent reflective sub-electrodes, the orthographic projection areas of the two reflective sub-electrodes on the first substrate 321 are the same.

Another embodiment of the present invention provides a driving method for driving the electrons provided in the above embodiment to a display panel, including:

according to the acquired display data, a driving voltage is applied to the second electrode such that:

the black charged particles in at least one pixel unit move to be gathered on the first electrode or all the second electrodes, so that the pixel unit displays black; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode of the second electrode with the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the second electrodes with the color resistance layers; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode with a part of the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The black charged particles in at least one pixel unit move to be gathered on all second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the black charged particles in at least one pixel unit move to be gathered on the second electrode at least partially without the color resistance layer, so that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

Another embodiment of the present invention provides an electronic paper display device, including the electronic paper display panel provided in the foregoing embodiment. The electronic paper display device may be any product or component with a display function, such as an electronic reader, a billboard, an electronic tag, etc., which is not limited in this embodiment.

It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims (13)

1. An electronic paper display panel, characterized by, including first base plate, second base plate and lie in the pixel boundary portion between first base plate and the second base plate, pixel boundary portion defines a plurality of pixel units, the pixel unit is including being located first base plate with the electron ink layer between the second base plate, electron ink layer includes black colored electric particle, first base plate includes first substrate and sets up the reflection stratum on the first substrate, the second base plate includes the second substrate and sets up first electrode on the second substrate, at least one the pixel unit includes setting up a plurality of second electrodes on the reflection stratum, wherein, at least part the second electrode is towards or keep away from one side of first substrate is provided with the color resist layer.

2. The electronic paper display panel of claim 1, wherein the black charged particles are configured to:

the first electrode and the second electrode are driven to move so as to be gathered on the first electrode or gathered on all the second electrodes, and the pixel unit displays black; or (b)

And the second electrodes which are driven by the first electrodes and the second electrodes to move so as to gather at part of the second electrodes provided with the color resistance layers realize that the pixel units display colors corresponding to the color resistance layers of the other second electrodes provided with the color resistance layers.

3. The electronic paper display panel of claim 1, wherein at least one of the second electrodes is not provided with a color resist layer.

4. The electronic paper display panel of claim 3, wherein the black charged particles are further configured to:

the first electrode and the second electrode are driven to move so as to gather on the second electrode with the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The first electrode and the second electrode are driven to move so as to gather on all the second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the second electrode which is driven by the first electrode and the second electrode to move so as to gather at least part of the second electrode without the color resistance layer realizes that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

5. The electronic paper display panel of claim 1, wherein the color resist layer comprises a first color resist layer, a second color resist layer, and a third color resist layer, wherein at least one second electrode is provided with the first color resist layer, wherein at least one second electrode is provided with the second color resist layer, and wherein at least one second electrode is provided with the third color resist layer.

6. The electronic paper display panel of claim 5, wherein the plurality of second electrodes are provided with a first color resist layer, the plurality of second electrodes are provided with a second color resist layer, and the plurality of second electrodes are provided with a third color resist layer.

7. The electronic paper display panel of claim 6, wherein the orthographic projection areas of the plurality of second electrodes with the first color resist layer on the first substrate are the same, the orthographic projection areas of the plurality of second electrodes with the second color resist layer on the first substrate are the same, and the orthographic projection areas of the plurality of second electrodes with the third color resist layer on the first substrate are the same.

8. The electronic paper display panel according to claim 1, wherein a plurality of the second electrodes in at least one of the pixel units are arranged in a matrix or a column.

9. The electronic paper display panel of claim 1, wherein at least one of the pixel units includes a plurality of reflective electrodes disposed on the first substrate, the reflective electrodes multiplexed into the reflective layer and the second electrode, the color resist layer disposed on a side of the reflective electrode remote from the first substrate.

10. The electronic paper display panel according to claim 1, wherein the pixel defining portions are disposed between adjacent pixel units, and no pixel defining portion is disposed in the pixel unit.

11. The electronic paper pixel unit of claim 1, wherein the first substrate further comprises a driving circuit layer, and the driving circuit layer comprises a plurality of thin film transistors connected to the plurality of second electrodes in a one-to-one correspondence.

12. An electronic paper display device comprising the electronic paper display panel according to any one of claims 1 to 11.

13. A driving method for driving the electrons of any one of claims 1-11 to a display panel, the method comprising:

according to the acquired display data, a driving voltage is applied to the second electrode such that:

the black charged particles in at least one pixel unit move to be gathered on the first electrode or all the second electrodes, so that the pixel unit displays black; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode of the second electrode with the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the second electrodes with the color resistance layers; or (b)

At least one black charged particle in the pixel unit moves to gather at the second electrode with a part of the color resistance layer and the second electrode without the color resistance layer, so that the pixel unit displays colors corresponding to the color resistance layers of the other second electrodes with the color resistance layers; or (b)

The black charged particles in at least one pixel unit move to be gathered on all second electrodes provided with the color resistance layers, so that the pixel unit displays white; or (b)

And the black charged particles in at least one pixel unit move to be gathered on the second electrode at least partially without the color resistance layer, so that the pixel unit displays the color corresponding to the color resistance layer of the second electrode with the color resistance layer.

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