CN106019756A - Display panel and manufacturing method thereof, as well as curved-surface display panel and curved-surface display device - Google Patents

Abstract

The invention discloses a display panel and a manufacturing method thereof, a curved display panel and a curved display device, which are used to avoid light leakage, color mixing and reduction in aperture ratio caused by the display panel during the bending process. The display panel includes: a first base substrate and a second base substrate; a pixel structure arranged in an array arranged on the side of the first base substrate away from the second base substrate; An electrochromic material layer between the substrate and the second base substrate; a first transparent electrode disposed between the electrochromic material layer and the pixel structure and having the same shape as the opening area of the pixel structure; disposed on the electrochromic material layer and the second transparent electrode between the second base substrate, at least part of the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is the same as that of the first transparent electrode on the first base substrate or the second base substrate The orthographic overlay on the substrate substrate.

Description

Display panel and manufacturing method thereof, curved display panel and curved display device

technical field

The present invention relates to the field of display technology, in particular to a display panel and a manufacturing method thereof, a curved display panel and a curved display device.

Background technique

With the development of display technology, new display products emerge in an endless stream. At present, as a new display technology, curved display is more and more respected by panel manufacturers and consumers. The curved display panel has a curved display screen. Because it can achieve the consistency of the distance between each pixel of the display screen and the human eye, it can more truly restore the visual experience of the human eye and give the viewer a better sense of presence. Flat display panels are more competitive.

When making a curved display panel, it is necessary to bend the original flat display panel, because the counter substrate (Color Filter) and the array substrate (TFT) will be based on the center of the display panel, which will produce a left or right direction in the horizontal direction. The relative displacement of the right side causes the black matrix on the opposite substrate in the left and right end areas to shift, which originally corresponds to the position of the metal line on the array substrate, causing the black matrix to cover the display area (Active area), resulting in a decrease in the aperture ratio. reduce. Referring to FIG. 1(a), the liquid crystal display panel includes a color filter substrate 11 and an array substrate 12 arranged opposite to each other, the array substrate 12 includes a pixel electrode 121 structure, and the color filter substrate 11 includes a pattern of a black matrix 111, wherein the black matrix is in The orthographic projection on the array substrate does not overlap with the projection of the pixel opening area on the array substrate. Specifically, when making a curved display panel, the display panel shown in Figure 1(a) is bent. Since the color filter substrate and the array substrate are located in different areas above and below, the stress on the upper and lower substrates is different when a force is applied. As a result, the relative displacements of the upper and lower substrates are different, resulting in a curved display panel with the structure shown in FIG. As a result, the non-uniformity of the display of the display panel under the same driving condition results in defects such as light leakage, color mixing, and lower aperture ratio, which affect the display effect.

To sum up, in the manufacturing process of the existing curved display panel, the phenomena of light leakage, color mixing and reduction of the aperture ratio may be caused by the bending process of the array substrate.

Contents of the invention

The invention provides a display panel and a manufacturing method thereof, a curved display panel and a curved display device, which are used to avoid light leakage, color mixing and reduction in aperture ratio caused by the display panel during the bending process.

An embodiment of the present invention provides a display panel, including:

a first base substrate and a second base substrate;

Pixel structures arranged in an array arranged on the side of the first base substrate away from the second base substrate;

an electrochromic material layer disposed between the first base substrate and the second base substrate;

a first transparent electrode disposed between the electrochromic material layer and the pixel structure and having the same shape as the opening area of the pixel structure;

A second transparent electrode disposed between the electrochromic material layer and the second base substrate, at least part of the second transparent electrode on the first base substrate or the second base substrate The projection overlaps the orthographic projection of the first transparent electrode on the first base substrate or the second base substrate;

Wherein, the first transparent electrode and the second transparent electrode are used to enable the electrochromic material disposed between the first transparent electrode and the second transparent electrode to have a light-transmitting effect under a preset voltage difference.

In a possible implementation manner, in the above display panel provided by the embodiment of the present invention, the pixel structure includes a pixel electrode, and the first transparent electrode is located between the pixel electrode and the first base substrate.

In a possible implementation manner, in the above display panel provided by the embodiment of the present invention, the display panel further includes: an insulating layer disposed between the pixel electrode and the first transparent electrode.

In a possible implementation manner, in the above display panel provided by the embodiment of the present invention, the first transparent electrode is located between the first base substrate and the electrochromic material layer.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is related to the electrochromic The orthographic projections of the material layers on the first base substrate or the second base substrate overlap.

Correspondingly, an embodiment of the present invention also provides a curved display panel, including any one of the display panels provided in the embodiments of the present invention, the section of the display panel along the extending direction of the long axis is an arc section, and the arc The bending direction of the section is away from the second base substrate.

In a possible implementation manner, in the above-mentioned curved display panel provided by the embodiment of the present invention, the curved display panel further includes:

The opposite substrate disposed on the side of the first base substrate away from the second base substrate, and the liquid crystal layer disposed between the first base substrate and the opposite substrate; wherein,

The bending direction of the opposite substrate is the same as the bending direction of the first base substrate.

In a possible implementation manner, in the above-mentioned curved display panel provided by the embodiment of the present invention, the curved display panel further includes:

A curved backlight arranged on a side of the second base substrate away from the second transparent electrode, the curved direction of the curved backlight is the same as that of the first base substrate.

Correspondingly, an embodiment of the present invention also provides a curved display device, including any one of the curved display panels provided in the embodiments of the present invention.

Correspondingly, the embodiment of the present invention also provides a method for manufacturing the display panel provided by the embodiment of the present invention, the method comprising:

forming a pattern of pixel structures arranged in an array on the side of the first base substrate away from the second base substrate;

forming an electrochromic material layer between the first base substrate and the second base substrate;

forming a pattern of a first transparent electrode having the same shape as the opening area of the pixel structure between the electrochromic material layer and the pixel structure;

A pattern of a second transparent electrode is formed between the electrochromic material layer and the second base substrate, and at least part of the second transparent electrode is on the first base substrate or the second base substrate The orthographic projection overlaps the orthographic projection of the first transparent electrode on the first base substrate or the second base substrate;

Wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material arranged between the first transparent electrode and the second transparent electrode have a light-transmitting effect under a preset voltage difference, and the other areas The electrochromic material has a light-shielding effect.

The beneficial effects of the present invention are as follows:

Embodiments of the present invention provide a display panel and a manufacturing method thereof, a curved display panel, and a curved display device. The display panel includes: a first base substrate and a second base substrate; A pixel structure arranged in an array on the side of the substrate away from the second base substrate; an electrochromic material layer disposed between the first base substrate and the second base substrate; disposed on the A first transparent electrode between the electrochromic material layer and the pixel structure and having the same shape as the opening area of the pixel structure; a first transparent electrode disposed between the electrochromic material layer and the second base substrate Two transparent electrodes, at least part of the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is the same as that of the first transparent electrode on the first base substrate or the second substrate Overlapping orthographic projections on the substrate; wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material disposed between the first transparent electrode and the second transparent electrode under a preset voltage difference It has a light-transmitting effect. Specifically, in the display panel provided by the embodiment of the present invention, a first transparent electrode that is the same as the opening area of the pixel structure is arranged under the pixel structure, and a second transparent electrode is placed under the first transparent electrode, and the first transparent electrode and the An electrochromic material layer is arranged between the second transparent electrodes, and when the voltage difference between the first transparent electrode and the second transparent electrode reaches a preset voltage difference, the electrochromic material layer between the first transparent electrode and the second transparent electrode The color-changing material layer has a light-transmitting effect, and the electrochromic material in other regions has a light-shielding effect. Since the first transparent electrode is the same as the opening area of the pixel structure, the electrochromic material layer located in the orthographic projection of the opening area has a light-transmitting effect, and the electrochromic material layer not located in the orthographic projection of the opening area has a light-shielding effect, that is, the first The transparent electrode controls the electrochromic material to form a black matrix, and the size of the light-shielding portion formed by the electrochromic material changes correspondingly with the size of the first transparent electrode. Therefore, the light-shielding structure provided by the embodiment of the present invention is composed of an electrochromic material layer, a first transparent electrode and a second transparent electrode. When the display panel is bent, since the pixel structure and the first transparent electrode are respectively located on the first substrate on both sides of the display panel, so that the direction and magnitude of the stress are consistent, and there will be no misalignment between the first transparent electrode and the pixel structure, thereby avoiding the misalignment between the light-shielding structure and the pixel structure when the display panel is bent. The phenomenon of light leakage, color mixing and decrease of aperture ratio improves the display effect.

Description of drawings

Figure 1(a) and 1(b) are the structure of a display panel provided by the prior art;

FIG. 2 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a display panel after being bent according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second display panel provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a third display panel provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a fourth display panel provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a fifth display panel provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a sixth display panel provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a method for manufacturing a display panel provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a curved display panel provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another curved display panel provided by an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The invention provides a display panel and a manufacturing method thereof, a curved display panel and a curved display device, which are used to avoid light leakage, color mixing and reduction in aperture ratio caused by the display panel during the bending process.

The specific implementation manners of the display panel and the manufacturing method thereof, the curved display panel and the curved display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The shapes and sizes of the components in the drawings do not reflect the true proportions of the display panel and the curved display panel, but are only intended to schematically illustrate the content of the present invention.

Referring to FIG. 2 , a display panel 2 provided by an embodiment of the present invention includes: a first base substrate 21 and a second base substrate 22 ; The pixel structure 23 arranged in an array; the electrochromic material layer 24 arranged between the first substrate 21 and the second substrate 22; the electrochromic material layer 24 arranged between the pixel structure 23 and the pixel The first transparent electrode 25 with the same shape of the opening area of the structure (in FIG. 2, only the first transparent electrode is located between the first base substrate and the electrochromic material layer as an example, but not limited to the structure of FIG. 2); The second transparent electrode 26 of the electrochromic material layer 24 and the second base substrate 22, the at least part of the orthographic projection of the second transparent electrode 26 on the first base substrate 21 or the second base substrate 22 and the first transparent electrode orthographic overlay on the first base substrate 21 or the second base substrate 22;

Wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material arranged between the first transparent electrode and the second transparent electrode have a light-transmitting effect under a preset voltage difference.

It should be noted that the electrochromic material layer provided in the embodiment of the present invention has the function of transmitting light when there is a preset voltage difference between the first transparent electrode and the second transparent electrode, and the electrochromic material layer is on top The area without the first transparent electrode has a light-shielding effect. Therefore, the light shielding structure in the embodiment of the present invention uses an electrochromic material layer for shielding. Wherein, the first transparent electrode and the second transparent electrode can be made of transparent conductive materials such as indium tin oxide (ITO), which are not specifically limited here. Wherein the structure of the second transparent electrode can be the same as the structure of the first transparent electrode, or the structure of the second transparent electrode is set as a whole layer, as long as the second transparent electrode is guaranteed to be on the first base substrate or the second base substrate It is enough that the orthographic projection is at least equal to the projection of the first transparent electrode on the first base substrate or the second base substrate, and the structure of the second transparent electrode is not specifically limited here.

Generally, the material of the electrochromic material layer is a liquid, so the display panel provided by the embodiment of the present invention includes a first base substrate and a second base substrate, which can facilitate the formation of an electrochromic material between the two base substrates. layer. Wherein, the first base substrate in the embodiment of the present invention may be a base substrate of an array substrate.

Further, in order to more clearly introduce the beneficial effect of the display panel provided by the embodiment of the present invention, taking the curved display panel shown in FIG. 3 as an example, the display panel shown in FIG. 2 is bent to obtain the curved display panel shown in FIG. 3 Displays the panel structure. Referring to FIG. 3 , when the display panel has a curved shape, since the first transparent electrode 25 and the pixel structure 23 are located on one side of the first base substrate, or respectively located on both sides of the first base substrate, the first transparent The magnitude and direction of the stress received by the electrode and the pixel structure are the same, which avoids the dislocation between the opening area of the pixel structure and the first transparent electrode. With the bending of the pixel structure, the first transparent electrode, the second transparent electrode and the electrochromic material layer At the same time bending, because the light-transmitting area and the light-shielding area in the electrochromic material layer are affected by the position of the first transparent electrode, and the first transparent electrode is the same as the opening area of the pixel structure, so the light-shielding structure composed of the first transparent electrode does not It will affect the aperture ratio of the pixel structure, so that the electrochromic material layer not located between the first transparent electrode and the second transparent electrode has a light-shielding function.

An embodiment of the present invention provides a display panel comprising: a first base substrate and a second base substrate; a pixel structure arranged in an array arranged on a side of the first base substrate away from the second base substrate; An electrochromic material layer disposed between the first base substrate and the second base substrate; a first transparent electrode disposed between the electrochromic material layer and the pixel structure and having the same shape as the opening area of the pixel structure; The second transparent electrode between the electrochromic material layer and the second base substrate, at least part of the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is the same as that of the first transparent electrode on the first base substrate. The orthographic projections on the base substrate or the second base substrate overlap; wherein, the first transparent electrode and the second transparent electrode are used to make the transparent electrode arranged between the first transparent electrode and the second transparent electrode The electrochromic material has a light-transmitting effect, and the electrochromic material in other regions has a light-shielding effect. Specifically, in the display panel provided by the embodiment of the present invention, a first transparent electrode that is the same as the opening area of the pixel structure is arranged under the pixel structure, and a second transparent electrode is placed under the first transparent electrode, and the first transparent electrode and the An electrochromic material layer is arranged between the second transparent electrodes, and when the voltage difference between the first transparent electrode and the second transparent electrode reaches a preset voltage difference, the electrochromic material layer between the first transparent electrode and the second transparent electrode The color-changing material layer has a light-transmitting effect. Since the opening area of the first transparent electrode is the same as that of the pixel structure, the electrochromic material layer located in the orthographic projection of the opening area has a light-transmitting effect, and the electrochromic material layer not located in the orthographic projection of the opening area has a light-shielding effect. Therefore, the light-shielding structure provided by the embodiment of the present invention is composed of an electrochromic material layer, a first transparent electrode and a second transparent electrode. When the display panel is bent, since the pixel structure and the first transparent electrode are respectively located on the first substrate on both sides of the display panel, so that the direction and magnitude of the stress are consistent, and there will be no misalignment between the first transparent electrode and the pixel structure, thereby avoiding the misalignment between the light-shielding structure and the pixel structure when the display panel is bent. The phenomenon of light leakage, color mixing and decrease of aperture ratio improves the display effect.

In a specific embodiment, in the above display panel provided by the embodiment of the present invention, referring to FIG. 4 , the pixel structure 23 includes a pixel electrode 231 , and the first transparent electrode 25 is located between the pixel electrode 231 and the first base substrate 21 . The display panel 2 further includes: an insulating layer 27 disposed between the pixel electrode 231 and the first transparent electrode 25 . In order to prevent the conduction between the pixel electrode and the first transparent electrode from affecting the normal display of the display panel, an insulating layer needs to be arranged between the pixel electrode and the first transparent electrode to insulate the pixel electrode and the first transparent electrode.

Specifically, the pixel structure on the first base substrate includes a thin film transistor structure, a pixel electrode and a common electrode, etc., wherein the thin film transistor structure includes a gate, a gate insulating layer, an active layer on the first base substrate , the source-drain structure, and the pixel electrode is electrically connected to the drain of the thin film transistor. Wherein, the thin film transistor includes a bottom gate structure and a top gate structure.

The position of the film layer where the first transparent electrode is located will be described below by taking a thin film transistor with a bottom gate structure as an example. For example, referring to FIG. 5 , the pixel structure 23 includes a gate 232 located on the first substrate 21, a gate insulating layer 233, an active layer 234, a source 235, a drain 236, and an electrical connection with the drain 236. The pixel electrode 231. Wherein, the first transparent electrode 25 is located above the first substrate 21 and below the gate 232 . Wherein, the pattern of the first transparent conductive layer is formed after the pattern of the gate is formed, or the pattern of the first transparent conductive layer is formed before the pattern of the gate is formed. Alternatively, the first transparent electrode is located above the gate insulating layer and below the pixel electrode, but in order to avoid the conductive effect between the pixel electrode and the first transparent electrode, an insulating layer needs to be provided between the pixel electrode and the transparent electrode, thereby Added crafting process. Therefore, preferably, the first transparent electrode is disposed under the gate insulating layer, thereby saving manufacturing process. Of course, the film layer where the first transparent electrode provided in the embodiment of the present invention is not limited to the structure shown in FIG. 5 .

For a thin film transistor with a top-gate structure, the film layer structure where the first transparent electrode is located, as shown in FIG. pole 232, a dielectric layer 237, a source 235, a drain 236, and a pixel electrode 231 electrically connected to the drain 236, wherein the first transparent electrode 25 is located above the first base substrate 21 and located on the gate insulating layer 233, and the pattern of the first transparent electrode is the same as that of the pixel electrode. Wherein, the first transparent electrode may be located between any two film layers between the pixel electrode and the active layer, which is not specifically limited here.

In a specific embodiment, in the above display panel provided by the embodiment of the present invention, referring to FIG. 7 , the first transparent electrode 25 is located between the first base substrate 21 and the electrochromic material layer 24 .

Specifically, the first transparent electrode can be located above or below the first base substrate. When the first transparent electrode is located below the first base substrate, the pixel electrode and the first transparent electrode are respectively located on both sides of the first base substrate. On the other hand, when the first base substrate is bent, the pixel electrode and the first transparent electrode will not move under the stress, thereby avoiding the misalignment between the first transparent electrode and the pixel electrode, and avoiding light leakage, color mixing, and A phenomenon in which the aperture ratio decreases.

In a specific embodiment, in the above-mentioned display panel provided by the embodiment of the present invention, see FIG. Orthographic overlap on 21.

Specifically, when the second transparent conductive layer is formed on the second base substrate, a whole-layer structure can be formed, or a second transparent electrode with the same structure can be formed by using the same mask as the first transparent electrode. Wherein, the second transparent electrode is formed into the structure shown in FIG. 8 , which simplifies the manufacturing process and avoids the dislocation of the light-transmitting region and the light-shielding region of the electrochromic material layer caused by the dislocation of the second transparent electrode. . Of course, the second transparent electrode is not limited to the structure shown in FIG. 8 , and the second transparent conductive layer also includes a strip electrode structure corresponding to each row of pixel electrodes or each column of pixel electrodes. Specifically, the structure of the second transparent electrode is not specifically limited here.

Based on the same inventive idea, the embodiment of the present invention also provides a method for manufacturing the display panel provided by the embodiment of the present invention, see FIG. 9 , the method includes:

S901, forming a pattern of pixel structures arranged in an array on the side of the first base substrate away from the second base substrate;

Wherein, the pixel structure includes a thin film transistor structure located on the first base substrate, a common electrode layer, a pixel electrode electrically connected to the thin film transistor, and the like. The manufacturing method of the pixel structure is the same as that of the prior art, and will not be repeated here.

S902, forming an electrochromic material layer between the first base substrate and the second base substrate;

Wherein, step S901 and step S902 are in no particular order, the pattern of the pixel structure may be formed above the first base substrate, and then the electrochromic material layer is formed between the first base substrate and the second base substrate; Alternatively, an electrochromic material layer is first formed between the first base substrate and the second base substrate, and then a pixel structure pattern is formed on the other side of the first base substrate, which is not specifically limited here.

S903, forming a pattern of a first transparent electrode having the same shape as the opening area of the pixel structure between the electrochromic material layer and the pixel structure;

Wherein, the pattern of the first transparent electrode can be formed between the pixel structure and the first base substrate, and can also be formed between the first substrate and the electrochromic material layer. Therefore, the pattern of the first transparent electrode can be formed , the steps for forming different structures are also different.

When the first transparent electrode is located between the first base substrate and the electrochromic material layer, step S903 may be located between step S901 and step S903, or be performed in the order of step S903, step S901, and step S902; when the first When the transparent electrode is located between the pixel structure and the first substrate, step S903 may be before step S901. The sequence of specific execution steps is not specifically limited here.

S904, forming a pattern of a second transparent electrode between the electrochromic material layer and the second base substrate, at least part of the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is consistent with the first transparent electrode an orthographic overlap of the electrodes on either the first base substrate or the second base substrate;

Wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material arranged between the first transparent electrode and the second transparent electrode have a light-transmitting effect under a preset voltage difference.

It should be noted that, the embodiment of the present invention does not limit the execution sequence of step S901, step S902, step S903 and step S904, which may be sequentially formed in a different order according to different structures of the display panel. No specific limitation is made here.

The patterning process adopted in the formation of each pattern in the above steps may include a photolithography process, or may include a photolithography process and an etching step, and may also include other processes for forming predetermined patterns such as printing and inkjet; the photolithography process It refers to the process of forming patterns by using photoresist, mask plate, exposure machine, etc., including film formation, exposure, and development. During specific implementation, a corresponding patterning process can be selected according to the structure formed in the present invention.

Based on the same inventive idea, the embodiment of the present invention also provides a curved display panel, see FIG. 10 , the curved display panel includes any display panel 2 provided in the embodiment of the present invention, and the cross-section of the display panel 2 along the extending direction of the long axis It is an arc cross section, and the bending direction of the arc cross section is away from the second base substrate 22 .

The curved display panel provided in the embodiment of the present invention is manufactured by the display panel in the above embodiment. According to the display panel provided in the above embodiment, the display panel is bent to form the bending direction shown in FIG. 10 to form a curved display panel. Since the pixel structure and the first transparent electrode in the curved display panel are located on one side of the first base substrate, or on both sides of the first base substrate, during the bending process of the first base substrate, the direction of the stress and the same size, so that the pixel structure and the first transparent electrode will not be dislocated, and the light-shielding structure composed of the first transparent electrode, the electrochromic material layer and the second transparent electrode will not be dislocated, avoiding the dislocation in the curved display panel. The phenomenon of light leakage, color mixing and reducing the aperture ratio, thereby improving the display effect of the curved display panel.

In a specific embodiment, in the above-mentioned curved display panel provided by the embodiment of the present invention, referring to FIG. 10 , the curved display panel further includes: the opposite substrate 1 disposed on the side of the first base substrate 21 away from the second base substrate 22 , and the liquid crystal layer 3 disposed between the first base substrate and the opposite substrate; wherein, the bending direction of the opposite substrate 1 is the same as that of the first base substrate 21 . Wherein, the first base substrate can be used as the base substrate in the array substrate, and the bending direction of the opposite substrate is the same as that of the array substrate.

In a specific embodiment, in the above-mentioned curved display panel provided by the embodiment of the present invention, referring to FIG. 11 , the curved display panel further includes: a curved backlight source 4 disposed on the side of the second base substrate 22 away from the second transparent electrode 26, The bending direction of the curved backlight 4 is the same as that of the first base substrate 21 .

Based on the same inventive idea, an embodiment of the present invention further provides a curved display device, including any one of the curved display panels provided in the embodiments of the present invention. The curved display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like. For the implementation of the curved display device, reference may be made to the above embodiments of the curved display panel, and repeated descriptions will not be repeated.

To sum up, a display panel provided by an embodiment of the present invention includes: a first base substrate and a second base substrate; Pixel structure; an electrochromic material layer disposed between the first base substrate and the second base substrate; disposed between the electrochromic material layer and the pixel structure and with the pixel structure The first transparent electrode with the same shape of the opening area; the second transparent electrode arranged between the electrochromic material and the second base substrate, the second transparent electrode on the first base substrate or the second substrate At least part of the orthographic projection on the base substrate overlaps with the orthographic projection of the first transparent electrode on the first base substrate or the second base substrate; wherein the first transparent electrode and the second transparent electrode are used for at a preset voltage difference. Specifically, in the display panel provided by the embodiment of the present invention, a first transparent electrode that is the same as the opening area of the pixel structure is arranged under the pixel structure, and a second transparent electrode is placed under the first transparent electrode, and the first transparent electrode and the An electrochromic material layer is arranged between the second transparent electrodes, and when the voltage difference between the first transparent electrode and the second transparent electrode reaches a preset voltage difference, the electrochromic material layer between the first transparent electrode and the second transparent electrode The color-changing material layer has a light-transmitting effect, and the electrochromic material in other regions has a light-shielding effect. Since the opening area of the first transparent electrode is the same as that of the pixel structure, the electrochromic material layer located in the orthographic projection of the opening area has a light-transmitting effect, and the electrochromic material layer not located in the orthographic projection of the opening area has a light-shielding effect. Therefore, the light-shielding structure provided by the embodiment of the present invention is composed of an electrochromic material layer, a first transparent electrode and a second transparent electrode. When the display panel is bent, since the pixel structure and the first transparent electrode are respectively located on the first substrate on both sides of the display panel, so that the direction and magnitude of the stress are consistent, and there will be no misalignment between the first transparent electrode and the pixel structure, thereby avoiding the misalignment between the light-shielding structure and the pixel structure when the display panel is bent. The phenomenon of light leakage, color mixing and decrease of aperture ratio improves the display effect.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. A display panel, characterized in that the display panel comprises: a first base substrate and a second base substrate; Pixel structures arranged in an array arranged on the side of the first base substrate away from the second base substrate; an electrochromic material layer disposed between the first base substrate and the second base substrate; a first transparent electrode disposed between the electrochromic material layer and the pixel structure and having the same shape as the opening area of the pixel structure; A second transparent electrode disposed between the electrochromic material layer and the second base substrate, at least part of the second transparent electrode on the first base substrate or the second base substrate The projection overlaps the orthographic projection of the first transparent electrode on the first base substrate or the second base substrate; Wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material arranged between the first transparent electrode and the second transparent electrode have a light-transmitting effect under a preset voltage difference. 2. The display panel according to claim 1, wherein the pixel structure comprises a pixel electrode, and the first transparent electrode is located between the pixel electrode and the first base substrate. 3. The display panel according to claim 2, further comprising: an insulating layer disposed between the pixel electrode and the first transparent electrode. 4. The display panel according to claim 1, wherein the first transparent electrode is located between the first base substrate and the electrochromic material layer. 5. The display panel according to claim 1, characterized in that, the orthographic projection of the second transparent electrode on the first base substrate or the second base substrate is the same as that of the electrochromic material layer. The orthographic projections on the first base substrate or the second base substrate are superimposed. 6. A curved display panel, characterized in that it comprises the display panel according to any one of claims 1-5, the section of the display panel along the extending direction of the long axis is an arc section, and the section of the arc section is The bending direction is away from the second base substrate. 7. The curved display panel according to claim 6, wherein the curved display panel further comprises: The opposite substrate disposed on the side of the first base substrate away from the second base substrate, and the liquid crystal layer disposed between the first base substrate and the opposite substrate; wherein, The bending direction of the opposite substrate is the same as the bending direction of the first base substrate. 8. The curved display panel according to claim 7, wherein the curved display panel further comprises: A curved backlight arranged on a side of the second base substrate away from the second transparent electrode, the curved direction of the curved backlight is the same as that of the first base substrate. 9. A curved display device, comprising the curved display panel according to any one of claims 6-8. 10. A method for manufacturing a display panel according to any one of claims 1-5, characterized in that the method comprises: forming a pattern of pixel structures arranged in an array on the side of the first base substrate away from the second base substrate; forming an electrochromic material layer between the first base substrate and the second base substrate; forming a pattern of a first transparent electrode having the same shape as the opening area of the pixel structure between the electrochromic material layer and the pixel structure; A pattern of a second transparent electrode is formed between the electrochromic material layer and the second base substrate, and at least part of the second transparent electrode is on the first base substrate or the second base substrate The orthographic projection overlaps the orthographic projection of the first transparent electrode on the first base substrate or the second base substrate; Wherein, the first transparent electrode and the second transparent electrode are used to make the electrochromic material arranged between the first transparent electrode and the second transparent electrode have a light-transmitting effect under a preset voltage difference.