CN115951533A - Display panel, driving method and display device - Google Patents

Abstract

The application discloses a display panel, a driving method and a display device, relates to the technical field of display, can realize the switching function of an anti-peeping mode of the display panel, and can switch the anti-peeping mode and a normal display mode according to requirements. A display panel, comprising: a substrate layer; a plurality of pixel structures disposed on one side of the substrate layer; the electrochromic integrated layer is arranged on one side, away from the substrate layer, of the pixel structure; the electrochromic integration layer comprises a first electrode and an electrochromic layer, the first electrode has a first hollowed-out area, an orthographic projection of the first hollowed-out area on the substrate layer covers an orthographic projection of the pixel structure on the substrate layer, and an orthographic projection of the first electrode on the substrate layer covers an orthographic projection of the pixel defining structure on the substrate layer; the first electrode is used for controlling the color of the electrochromic layer of the corresponding area to be darkened under the driving of a driving signal.

Description

Display panel, driving method and display device

technical field

The present application relates to the field of display technology, and in particular to a display panel, a driving method and a display device.

Background technique

At present, information security and user privacy are more and more valued by users. However, while users enjoy the display effect of large screen and wide viewing angle, they also face the risk of privacy leakage. In order to prevent other people from seeing the content of the screen clearly from the side of the display, an anti-peeping film is usually attached to the display screen. However, the application of the anti-peeping film will keep the display screen in the anti-peeping mode, and the anti-peeping mode cannot be turned off . When the user is in a hidden environment and does not need the anti-peeping mode, the convenience of the wide viewing angle of the display will be lost.

Contents of the invention

Embodiments of the present application provide a display panel, a driving method, and a display device, which can realize the switching function of the anti-peeping mode of the display panel, and can switch between the anti-peeping mode and the normal display mode as required.

According to the first aspect of the embodiments of the present application, a display panel is provided, including:

substrate layer;

A plurality of pixel structures arranged on one side of the substrate layer;

An electrochromic integration layer, disposed on the side of the pixel structure away from the substrate layer;

The electrochromic integration layer includes a first electrode and an electrochromic layer, the first electrode has a first hollow area, and the orthographic projection of the first hollow area on the substrate layer covers the pixel structure in the an orthographic projection on the substrate layer, the orthographic projection of the first electrode on the substrate layer overlays the orthographic projection of the pixel defining structure on the substrate layer;

The first electrode is used to control the color darkening of the electrochromic layer in the corresponding region under the driving of the driving signal.

In some embodiments, a pixel defining structure is arranged between adjacent pixel structures, and the orthographic projection of the first electrode on the substrate layer covers the orthographic projection of the pixel defining structure on the substrate layer. .

In some embodiments, the first electrode includes at least two groups of sub-electrodes, and each group of sub-electrodes is insulated from each other.

In some embodiments, different groups of the sub-electrodes are used to receive different driving signals.

In some embodiments, at least two groups of the sub-electrodes surround different pixel structures.

In some embodiments, in the case where the same pixel structure is surrounded by at least two groups of sub-electrodes, on the section cut by the connection line between two adjacent pixel structures, any group of the sub-electrodes The sub-electrodes are arranged between other groups of the sub-electrodes.

In some embodiments, the first electrode includes a first group of sub-electrodes, a second group of sub-electrodes and a third group of sub-electrodes;

On the section cut by the connection line of two adjacent pixel structures, the second group of sub-electrodes includes at least two, the third group of sub-electrodes includes at least two, and the same group of sub-electrodes are electrically connected to each other;

On the section cut by the connecting line of two adjacent pixel structures, the first group of sub-electrodes is located between at least two of the second group of sub-electrodes, and the second group of sub-electrodes is located between at least two between the third set of sub-electrodes.

In some embodiments, on the section cut by the connection line of two adjacent pixel structures, at least two sub-electrodes of the second group on both sides of the first group of sub-electrodes are The group of sub-electrodes is symmetrical; and/or,

On a cross section cut by a connecting line between two adjacent pixel structures, at least two of the third group of sub-electrodes on both sides of the first group of sub-electrodes are symmetrical with respect to the first group of sub-electrodes.

In some embodiments, in the direction where two adjacent pixel structures are connected, the size of a single electrode in the second group of sub-electrodes and the size of a single electrode in the third group of sub-electrodes are smaller than The size of the first group of sub-electrodes.

In some embodiments, the display panel further includes:

A plurality of pixel units, the pixel unit includes a plurality of pixel structures, and at least two of the pixel structures in the same pixel unit are used to emit light of different colors;

The orthographic projection of the first electrode on the substrate layer surrounds the orthographic projection of the pixel unit on the substrate layer.

In some embodiments, the electrochromic integrated layer further includes a second electrode, an ion storage layer, and an ion conducting layer;

The ion conducting layer is disposed between the ion storage layer and the electrochromic layer, and the ion storage layer, the ion conducting layer and the electrochromic layer are all disposed between the first electrode and the electrochromic layer. between the second electrodes.

In some embodiments, the second electrode has a second hollow area, and the orthographic projection of the second hollow area on the substrate layer covers the orthographic projection of the pixel structure on the substrate layer;

An orthographic projection of the second electrode on the substrate layer overlays an orthographic projection of the pixel defining structure on the substrate layer.

In some embodiments, the second electrode comprises a transparent conductive material; and/or,

The first electrode includes a transparent conductive material.

In some embodiments, the display panel further includes:

a first lead, one end is electrically connected to the first electrode, and the other end is used to electrically connect the driving chip;

a second lead, one end is electrically connected to the second electrode, and the other end is used to electrically connect the driving chip;

Both the first lead and the second lead surround all the pixel structures.

In some embodiments, the display panel further includes:

A color filter film, arranged between the substrate layer and the electrochromic integrated layer, the color filter film includes a light-shielding structure and a color photoperiod, and the light-shielding structure is arranged on the adjacent color photoperiod Between, the orthographic projection of the light shielding structure on the substrate layer falls into the orthographic projection of the pixel defining structure on the substrate layer;

and / or,

The touch function layer is arranged on the side of the electrochromic integration layer away from the substrate layer.

In some implementation manners, in a direction where two adjacent pixel structures are connected, a size of the light shielding structure is smaller than or equal to a size of the first electrode.

In some embodiments, the display panel further includes:

The polarizer is arranged on the side of the electrochromic integrated layer away from the substrate layer.

In some embodiments, the pixel structure includes a light emitting device.

In some embodiments, the first electrode is used to control the color of the electrochromic layer in the corresponding region to turn black under the driving of the driving signal.

The second aspect of the embodiments of the present application provides an anti-peeping driving method for a display panel, which is applied to the display panel as described in the first aspect, and the method includes:

According to the anti-peeping opening instruction, transmit a driving signal to the first electrode corresponding to the anti-peeping opening instruction;

Based on the driving signal, controlling the color of the corresponding electrochromic layer to become darker;

And, according to the anti-peeping closing instruction, stop transmitting the driving signal to the first electrode corresponding to the anti-peeping closing instruction;

Based on the disappearance of the driving signal, the color of the corresponding electrochromic layer becomes lighter.

In some embodiments, when the first electrode includes at least two groups of sub-electrodes, the method further includes:

According to the anti-peeping adjustment instruction, transmit the driving signal to the target sub-electrode, or stop transmitting the driving signal to the target sub-electrode, or adjust the magnitude of the driving signal of the target sub-electrode, wherein the target sub-electrode is the first electrode at least one set of sub-electrodes.

In some embodiments, the transmitting a driving signal to the first electrode corresponding to the anti-peeping opening instruction according to the anti-peeping opening instruction includes:

According to the anti-peeping opening instruction, the driving signal is transmitted to the first electrode of the target partition, wherein the first electrode is divided into at least two anti-peeping partitions, and the target partition is any of the anti-peeping partitions .

According to a third aspect of the embodiments of the present application, a display device is provided, including:

The display panel as described in the first aspect.

In the display panel provided by the embodiment of the present application, an electrochromic integrated layer is provided on the side of the pixel structure away from the substrate layer, and the first electrode of the electrochromic integrated layer is used to control the electrochromic layer in the corresponding area under the drive of the driving signal. color darkens. In the film thickness direction, the first electrode and the pixel defining structure overlap at least in space, then the first electrode can control the color of the electrochromic layer in the corresponding area to change under the action of the driving signal, and the electrochromic layer with darker color The layer can absorb light and play the role of blocking light, so the light emitted by the pixel structure at an angle is easily absorbed by the darkened electrochromic layer, that is, the brightness of the emitted light at an oblique viewing angle of the display panel is greatly reduced. It is difficult to see the display screen in the direction of the large viewing angle, which can play an anti-peeping effect. When the first electrode does not receive a driving signal, the color of the electrochromic layer does not change. When the color of the electrochromic layer does not change, the electrochromic layer has better light transmission performance and will not affect the normal display of the display panel. The state of the first electrode to which the driving signal is applied can be used as a switch of the anti-peeping mode, and the switching of the anti-peeping mode of the display panel can be realized.

Description of drawings

FIG. 1 is a schematic partial structural diagram of a display panel provided by an embodiment of the present application;

Fig. 2 is a schematic structural diagram of an anti-peeping film provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first electrode provided in an embodiment of the present application;

FIG. 4 is a schematic partial structural diagram of another display panel provided by an embodiment of the present application;

FIG. 5 is a schematic partial structural diagram of another display panel provided by an embodiment of the present application;

FIG. 6 is a schematic partial structural diagram of another display panel provided by the embodiment of the present application;

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

FIG. 8 is a schematic structural diagram of a pixel unit of a display panel provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a positional relationship between a pixel unit and a first electrode of a display panel provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of the positional relationship between a pixel unit and a first electrode of a display panel provided by an embodiment of the present application;

Fig. 11 is a schematic cross-sectional structure diagram of a display panel along M-N provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

FIG. 13 is a schematic flow chart of an anti-peeping driving method for a display panel provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a display device provided by an embodiment of the present application.

Detailed ways

In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below through the drawings and specific examples. The detailed description of the technical solutions of the embodiments is not a limitation to the technical solutions of this specification. In the case of no conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

In this document, relational terms such as first and second etc. are used only to distinguish one entity or operation from another without necessarily requiring or implying any such relationship between these entities or operations. Actual relationship or sequence. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element. The term "two or more" includes two or more cases.

At present, information security and user privacy are more and more valued by users. However, while users enjoy the display effect of large screen and wide viewing angle, they also face the risk of privacy leakage. In order to prevent other people from seeing the content of the screen clearly from the side of the display, an anti-peeping film is usually attached to the display screen. However, the application of the anti-peeping film will keep the display screen in the anti-peeping mode, and the anti-peeping mode cannot be turned off . When the user is in a hidden environment and does not need the anti-peeping mode, the convenience of the wide viewing angle of the display will be lost.

In view of this, the embodiments of the present application provide a display panel, a driving method, and a display device, which can realize the switch function of the anti-peeping mode of the display panel, and can switch between the anti-peeping mode and the normal display mode as required.

A first aspect of the embodiments of the present application provides a display panel, and FIG. 1 is a schematic partial structural diagram of the display panel provided by the embodiments of the present application. As shown in FIG. 1 , the display panel provided by the embodiment of the present application includes: a substrate layer 100 , a plurality of pixel structures 200 , a pixel defining structure 300 and an electrochromic integration layer 400 , and the plurality of pixel structures 200 are arranged on the substrate layer 100 On one side, a pixel defining structure 300 is disposed between adjacent pixel structures 200 . Exemplarily, a plurality of pixel structures 200 may be arranged in an array, and the pixel structures 200 may include light emitting devices, then the display panel is an active light emitting display panel, and the light emitting devices may be light emitting diodes. The pixel structure 200 may also include a pixel electrode, which is used to control the rotation of the liquid crystal under the driving signal, so as to realize picture display by controlling the transmission of the backlight, and the display panel is a passive light-emitting display panel. The electrochromic integrated layer 400 is disposed on the side of the pixel structure 200 away from the substrate layer 100. The electrochromic integrated layer 400 includes a first electrode 410 and an electrochromic layer 420. The first electrode 410 has a first hollow area 411, and the first The orthographic projection of the hollow area 411 on the substrate layer 100 covers the orthographic projection of the pixel structure 200 on the substrate layer 100 . The coverage may be full coverage or partial coverage, which is not specifically limited in this embodiment of the present application. The orthographic projection of the first electrode 410 on the substrate layer 100 covers the orthographic projection of the pixel defining structure 300 on the substrate layer 100 . The area where the pixel defining structure 300 is located does not emit light, and the pixel structure 200 is used to emit light. Exemplarily, the pixel structure 200 may include a red pixel structure R, a green pixel structure G, and a blue pixel structure B. Based on the principle of color mixing of the three primary colors of red, green and blue, the display of a color picture can be realized. The first electrode 410 is used to control the color of the corresponding region of the electrochromic layer 420 to become darker under the drive of the driving signal. As shown in FIG. The color is darker, for example, it can be black. In the film thickness direction, the first electrode 410 and the pixel defining structure 300 overlap at least in space, then the first electrode 410 can control the color of the electrochromic layer 420 in the corresponding area to change under the action of the driving signal, and the color becomes darker. The electrochromic layer 420 can absorb light and play the role of blocking light, so the light emitted obliquely from the pixel structure 200 is easily absorbed by the darkened electrochromic layer 420, that is, the brightness of the emitted light at an oblique viewing angle of the display panel It is greatly reduced, and it is difficult to see the display screen in the direction of the large viewing angle of the display panel, which can play an anti-peeping effect. When the first electrode 410 does not receive a driving signal, the color of the electrochromic layer 420 does not change. When the color of the electrochromic layer 420 does not change, it has better light transmission performance and will not affect the normal operation of the display panel. show. When the first electrode 410 receives the driving signal, the color of the electrochromic layer 420 corresponding to the hollow area 411 of the first electrode 410 will not change, and will not affect the light emission at the front viewing angle of the display panel. Angle to see the display screen. The first electrode 410 is applied with a driving signal to turn on the anti-peeping mode, the first electrode 410 is not applied with a driving signal, and can keep the closed state of the anti-peeping mode, then the state of the first electrode 410 being applied with a driving signal can be used as an anti-peeping mode The switch can realize the switching of the anti-peeping mode of the display panel. Since the area where the first electrode 410 is located corresponds to the area where the pixel defining structure 300 is located, the first electrode 410 surrounds the pixel structure 200, and the color of the electrochromic layer 420 around the pixel structure 200 can be controlled to become darker under the control of the driving signal. The light around the pixel structure 200 can be absorbed and shielded, so that the anti-peeping can be realized with a large viewing angle in all directions up, down, left, and right.

Exemplarily, the critical point at which the color of the electrochromic layer 420 becomes darker may be that the light transmittance is less than 10%, and the color of the electrochromic layer 420 gradually becomes lighter from a darker color, and the critical point at which the color becomes lighter may be that the light transmittance is greater than 10%. 80%.

It should be noted that the electrochromic integrated layer 400 is arranged on the side of the pixel structure 200 away from the substrate layer 100. It can be understood that the electrochromic integrated layer 400 is arranged on the light emitting side of the pixel structure 200, which can facilitate the realization of the anti-peeping function. .

It should be noted that columnar electrochromic structures can be arranged on both sides of the light-emitting device to achieve the anti-peeping function of large viewing angles on the left and right sides, but the effect of anti-peeping on large viewing angles up and down is poor. Pasting the anti-peeping film on the surface of the display panel can also achieve all-round anti-peeping, but the traditional anti-peeping film is a vertical grid-shaped black film, which can block light from a large viewing angle and achieve the purpose of anti-peeping. However, the film does not have a switch, and when the user obtains privacy protection, the convenience of a wide viewing angle is lost. At the same time, the anti-spy film can only prevent peeping from the left and right viewing angles, and the anti-peeping ability of the large viewing angles in the up and down directions is poor. In addition, the columnar electrochromic structure technology is difficult to realize a high-resolution display panel, the process is relatively complicated, the process is difficult, and it is difficult to be compatible with the stacking of other film layers. The realization of the display module screen is relatively low, and the production cost High, poor mass production.

Exemplarily, FIG. 2 is a schematic structural diagram of an anti-peeping film provided in an embodiment of the present application. As shown in Figure 2, the anti-peeping structure of the anti-peeping film F0 extends up and down, that is, the anti-peeping effect is mainly aimed at the left and right, but in large-size displays or crowded places, the anti-peeping in the up and down direction is also very important. FIG. 3 is a schematic structural diagram of a first electrode provided in an embodiment of the present application. As shown in FIG. 3 , the shape of the first electrode 410 is mesh. FIG. 3 shows a quadrilateral mesh. Specifically, the shape of the mesh of the first electrode 410 can be set according to the shape of the pixel structure. The grid-shaped first electrode 410 can realize anti-peeping from various angles such as up, down, left, right, left upper, left lower, right upper, and right lower.

In the display panel provided by the embodiment of the present application, the electrochromic integrated layer 400 is provided on the side of the pixel structure 200 away from the substrate layer 100, and the first electrode 410 of the electrochromic integrated layer 400 is used to control the corresponding area under the driving signal. The color of the electrochromic layer 420 becomes darker. In the film thickness direction, the first electrode 410 and the pixel defining structure 300 overlap at least in space, then the first electrode 410 can control the color of the electrochromic layer 420 in the corresponding area to change under the action of the driving signal, and the color becomes darker. The electrochromic layer 420 can absorb light and play the role of blocking light, so the light emitted obliquely from the pixel structure 200 is easily absorbed by the darkened electrochromic layer 420, that is, the brightness of the emitted light at an oblique viewing angle of the display panel It is greatly reduced, and it is difficult to see the display screen in the direction of the large viewing angle of the display panel, which can play an anti-peeping effect. When the first electrode 410 does not receive a driving signal, the color of the electrochromic layer 420 does not change. When the color of the electrochromic layer 420 does not change, it has better light transmission performance and will not affect the normal operation of the display panel. show. The state where the driving signal is applied to the first electrode 410 can be used as a switch of the anti-peeping mode, which can realize switching of the anti-peeping mode of the display panel.

In some implementation manners, FIG. 4 is a schematic partial structural diagram of another display panel provided in the embodiment of the present application. As shown in Figure 4, the electrochromic integrated layer 400 also includes a second electrode 430, an ion storage layer 440 and an ion conducting layer 450, the ion conducting layer 450 is arranged between the ion storage layer 440 and the electrochromic layer 420, and the ion storage Layer 440 , ion-conducting layer 450 and electrochromic layer 420 are all disposed between first electrode 410 and second electrode 430 .

Exemplarily, different driving voltages can be applied to the first electrode 410 and the second electrode 430, and the voltage difference can form an electric field between the first electrode 410 and the second electrode 430, and under the action of the electric field, the ion storage layer 440 gathers The ions are separated out and conducted to the electrochromic layer 420 through the ion conducting layer 450, and the electrochromic layer 420 in the region corresponding to the first electrode 410 can change from transparent to black. When a reverse voltage difference is applied, ions are separated from the electrochromic layer 420 , pass through the ion conducting layer 450 , and return to the ion storage layer 440 , and the electrochromic layer 420 will become transparent again. It should be noted that the color of the electrochromic layer 420 changes from transparent to dark, which can realize the shading effect. The arrow shown in FIG. The black electrochromic layer 420 blocks absorption. Driven by the first electrode 410 and the second electrode 430, the color of the electrochromic layer 420 becomes black, which can absorb more light, and has a better anti-peeping effect.

Exemplarily, the second electrode 430 includes a transparent conductive material, and the first electrode 410 includes a transparent conductive material. The transparent electrode material may be indium tin oxide, which is not specifically limited in this embodiment of the present application. The light emitted from the pixel structure 200 can exit the display panel without affecting it, and when the electrochromic layer 420 is in a closed state, that is, in a transparent state, it does not affect the large viewing angle display of the display panel. The second electrode 430 can also use PEDOT (a polymer of 3,4-ethylenedioxythiophene monomer), which can facilitate coating in large-scale production without high-temperature process, and can protect the organic light-emitting material.

In the display panel provided in the embodiment of the present application, the grid-shaped first electrode 410 is used as the top layer electrode of the electrochromic integration layer 400 . The grid-shaped first electrode 410 bypasses the opening of the OLED to ensure that the light from the pixel structure 200 is emitted normally.

In some embodiments, FIG. 5 is a schematic partial structural diagram of another display panel provided in the embodiment of the present application. As shown in FIG. 5, the second electrode 430 has a second hollow area 431, and the orthographic projection of the second hollow area 431 on the substrate layer 100 covers the orthographic projection of the pixel structure 200 on the substrate layer 100; The orthographic projection on 100 overlays the orthographic projection of the pixel-defining structure 300 on the substrate layer 100 . The coverage may be partial coverage or full coverage, which is not specifically limited in this embodiment of the present application. The second electrode 430 is made into a grid shape, which can better drive the color change of the electrochromic layer 420 on the pixel defining structure 300, and the boundary of the color change area is clearer. The second hollow area 431 may be provided with a transparent optical film layer, which is not specifically limited in this embodiment of the present application.

In some implementation manners, FIG. 6 is a schematic partial structural diagram of another display panel provided in the embodiment of the present application. As shown in FIG. 6, the display panel provided by the embodiment of the present application further includes: a color filter film 500, the color filter film 500 is arranged between the substrate layer 100 and the electrochromic integrated layer 400, and the color filter film 500 includes For the light shielding structure 510 and the color photoresist, for example, the color photoresist may be provided with a red photoresist r, a green photoresist g, and a blue photoresist b corresponding to the colors of light emitted by the pixel structure 200 . The light shielding structure 510 is disposed between adjacent color photoresists, and the orthographic projection of the light shielding structure 510 on the substrate layer 100 falls into the orthographic projection of the pixel defining structure 300 on the substrate layer 100 . It should be noted that the positions of the first electrode 410 , the light shielding structure 510 and the pixel defining structure 300 are all corresponding. The width of the light shielding structure 510 may be smaller than or equal to the width of the first electrode 410 , that is, the size of the light shielding structure 510 is smaller than or equal to the size of the first electrode 410 in the direction where two adjacent pixel structures 200 are connected. Since the light-shielding structure 510 is closer to the pixel structure 200 than the first electrode 410, the light-shielding structure 510 does not need to be too wide, and the effect of the color filter film 500 can be realized. If the light-shielding structure 510 is too wide, it will affect the front viewing angle of the pixel structure 200. The amount of light emitted will affect the display effect of the front viewing angle.

In some implementation manners, FIG. 7 is a schematic partial structural diagram of a display panel provided in an embodiment of the present application. As shown in FIG. 7 , the display panel provided by the embodiment of the present application further includes a touch function layer 600 and a polarizer 700 , the touch function layer 600 is disposed on the side of the electrochromic integration layer 400 away from the substrate layer 100 , and the polarizer 700 is disposed on the side of the electrochromic integration layer 400 away from the substrate layer 100 . As shown in FIG. 7 , the touch function layer 600 is disposed between the electrochromic integration layer 400 and the polarizer 700 , which is only schematic. The polarizer can also be disposed between the touch function layer and the electrochromic integration layer, which is not specifically limited in this embodiment of the present application. Exemplarily, the polarizer 700 can replace the color filter film for filtering light and reducing reflection. The touch function layer 600 may be provided with touch electrodes for realizing touch control.

In some embodiments, the display panel includes a plurality of pixel units, and the pixel unit includes a plurality of pixel structures 200, and at least two pixel structures 200 in the same pixel unit are used to emit light of different colors. Exemplarily, FIG. 8 is a schematic structural diagram of a pixel unit of a display panel provided by an embodiment of the present application. As shown in Figure 8, the pixel unit 201 includes a red pixel structure R, a green pixel structure G, and a blue pixel structure B. Based on the color mixing principle of red, green and blue primary colors, one pixel unit 201 can include two green pixel structures G, which can realize The required color coordinate adjustment range. The orthographic projection of the first electrode 410 on the substrate layer 100 surrounds the orthographic projection of the pixel structures on the substrate layer 100 , and each pixel structure is surrounded by the first electrodes 410 .

In some implementations, the orthographic projection of the first electrode 410 on the substrate layer 100 surrounds the orthographic projection of the pixel unit on the substrate layer 100 . The anti-peeping angle of the first electrode 410 surrounding a single pixel structure 200 is different from the anti-peeping angle of the first electrode 410 surrounding a single pixel unit, and the grid size of the first electrode can be set according to specific anti-peeping angle requirements.

Exemplarily, FIG. 9 is a schematic diagram of a positional relationship between a pixel unit and a first electrode of a display panel provided by an embodiment of the present application. As shown in FIG. 9 , the first electrode 410 surrounds a single pixel unit 201 .

In some embodiments, the first electrode includes at least two groups of sub-electrodes, and each group of sub-electrodes is insulated from each other. Different groups of sub-electrodes are used to receive different driving signals, and the mutually insulated sub-electrodes can be driven separately, which can be used to adjust the anti-peeping angle. Exemplarily, different driving signals can generate electric fields of different intensities, which can control the electrochromic layer 420 to produce different degrees of color changes, thereby affecting the anti-peeping angle.

In some embodiments, at least two sets of sub-electrodes surround different pixel structures. Exemplarily, the first electrode 410 includes a first group of sub-electrodes, a second group of sub-electrodes and a third group of sub-electrodes, the first group of sub-electrodes may surround the red pixel structure R, the second group of sub-electrodes may surround the green pixel structure G, The third group of sub-electrodes surrounds the blue pixel structure B, and the anti-peeping control of different sub-pixels can be realized through the separate control of different groups of sub-electrodes, and the anti-peeping control can be performed separately for a monochrome picture or monochrome chromaticity, which can More flexible control of the effect and degree of anti-peeping side.

In some embodiments, when the same pixel structure is surrounded by at least two groups of sub-electrodes, any group of sub-electrodes is arranged on the other group of sub-electrodes on the section cut by the connection line of two adjacent pixel structures. between. Then different groups of sub-electrodes can surround the same pixel structure, and controlling the driving signals of different groups of sub-electrodes can control the color-changing width of the electrochromic layer, thereby realizing flexible adjustment of different anti-peeping angles. At least one group of sub-electrodes includes at least two sub-electrodes, any group of sub-electrodes is arranged between the two sub-electrodes, and the width of the anti-peeping discoloration area can be controlled.

Exemplarily, FIG. 10 is a schematic diagram of a positional relationship between a pixel unit and a first electrode of a display panel provided in an embodiment of the present application; FIG. 11 is a schematic diagram of a cross-sectional structure of a display panel along M-N provided in an embodiment of the present application. Referring to FIG. 10 and FIG. 11 , the first electrode includes a first group of sub-electrodes 401 , a second group of sub-electrodes 402 and a third group of sub-electrodes 403 . As shown in FIG. 11 , on the section M-N cut by the connection line of two adjacent pixel structures, the second group of sub-electrodes 402 includes two, the third group of sub-electrodes 403 includes two, and the sub-electrodes of the same group include two The two sub-electrodes 402 of the second group are electrically connected to each other, that is, the same driving signal can be received between the two sub-electrodes 402 of the second group, that is, they are connected in series. Similarly, the sub-electrodes 403 of the third group are connected in series. On the section cut by the connection line of two adjacent pixel structures, the first group of sub-electrodes 401 is located between the two second group of sub-electrodes 402 , and the second group of sub-electrodes 402 is located between the two third group of sub-electrodes 403 between. Exemplarily, as shown in FIG. 11 , on the cross-section cut by the connection line of two adjacent pixel structures, the two second group sub-electrodes 402 on both sides of the first group sub-electrodes 401 are relative to the first group sub-electrodes. 401 is symmetrical, and the two third group sub-electrodes 403 on both sides of the first group of sub-electrodes 401 are symmetrical with respect to the first group of sub-electrodes 401 .

Exemplarily, the first group of sub-electrodes 401, the second group of sub-electrodes 402, and the third group of sub-electrodes 403 can control which group of sub-electrodes to transmit the driving signal to, and control the frequency of the driving signal according to different anti-peeping effect needs. The larger the driving signal, the stronger the electric field, the deeper the color change, and the wider the width. For example, if the driving signal is transmitted to the first group of sub-electrodes 401 alone, and the second group of sub-electrodes 402 and the third group of sub-electrodes 403 do not transmit driving signals, the color changing width of the electrochromic layer is the first width; The sub-electrode 401 and the second group of sub-electrodes 402 transmit the driving signal, then the discoloration width of the electrochromic layer is the second width, and the numerical value and magnitude relationship of the driving signal corresponding to the two groups of sub-electrodes will affect the value of the second width; at the same time The driving signal is transmitted to the first group of sub-electrodes 401, the second group of sub-electrodes 402 and the third group of sub-electrodes 403, the color changing width of the electrochromic layer is the third width, and the numerical value and size of the driving signals corresponding to the three groups of sub-electrodes Relationships affect the third width. The first width is smaller than the second width, and the second width is smaller than the third width. The discoloration width of the electrochromic layer corresponding to the second group of sub-electrodes 402 is driven separately to the fourth width, and the fourth width is smaller than the second width; the discoloration width of the electrochromic layer corresponding to the third group of sub-electrodes 403 is driven separately to the fifth width. The fifth width is smaller than the third width; the relationship between the fifth width and the fourth width may depend on the width of the electrode. Therefore, by driving different groups of sub-electrodes or combined driving of different groups of sub-electrodes, the color-changing width of the electrochromic layer 420 is controlled.

It should be noted that the overlapping regions between different groups of sub-electrodes can be isolated by insulating layers, and different groups of sub-electrodes can be prepared by different processes.

Exemplarily, as shown in FIG. 11 , in the direction where two adjacent pixel structures are connected, the size of a single electrode of the second group of sub-electrodes 402 and the size of a single electrode of the third group of sub-electrodes 403 are smaller than The size of the first group of sub-electrodes 401 . The first group of sub-electrodes 401 can be used as the main driving electrodes, and the second group of sub-electrodes 402 and the third group of sub-electrodes 403 can be used as auxiliary driving electrodes for flexible adjustment of the color changing width to achieve different anti-peeping width adjustments.

Exemplarily, referring to FIG. 10 and FIG. 11, the first group of sub-electrodes 401, the second group of sub-electrodes 402, and the third group of sub-electrodes respectively form four pixel structures surrounding the same pixel unit, that is, four grids of GGRB, Corresponding to the same pixel structure, such as R, the area of the hollowed out area corresponding to the first group of sub-electrodes 401 is larger than the area of the hollowed out area corresponding to the second group of sub-electrodes 402 , and larger than the area of the hollowed out area corresponding to the third group of sub-electrodes 403 . The first group of sub-electrodes 401 , the second group of sub-electrodes 402 and the third group of sub-electrodes 403 are provided with different hollow areas, which are used to flexibly adjust the color-changing width, so as to realize the adjustment of different anti-peeping widths.

Exemplarily, referring to FIG. 10 and FIG. 11, the first group of sub-electrodes 401, the second group of sub-electrodes 402, and the third group of sub-electrodes respectively form four pixel structures surrounding the same pixel unit, that is, four grids of GGRB, In the same pixel unit, the area of the hollowed out area of the first group of sub-electrodes 401 corresponding to the blue pixel structure B is larger than the area of the hollowed out area of the first group of sub-electrodes 401 corresponding to the red pixel structure R, and larger than the area of the first group of sub-electrodes 401 corresponding to the green pixel The area of the hollowed-out region of structure G. Similarly, the area of the hollow area corresponding to the blue pixel structure B of the second group of sub-electrodes 402 is larger than the area of the hollow area of the second group of sub-electrodes 402 corresponding to the red pixel structure R, and larger than the area of the second group of sub-electrodes 402 corresponding to the green pixel structure G The area of the hollow area. The area of the hollow area of the third group of sub-electrodes 403 corresponding to the blue pixel structure B is larger than the area of the hollow area of the third group of sub-electrodes 403 corresponding to the red pixel structure R, and larger than the area of the hollow area of the third group of sub-electrodes 403 corresponding to the green pixel structure G Area area.

Exemplarily, referring to FIG. 10 and FIG. 11 , the first group of sub-electrodes 401 , the second group of sub-electrodes 402 and the third group of sub-electrodes are respectively located in different layers, and the first group of sub-electrodes 401 is larger than the second group of sub-electrodes 402 and The third group of sub-electrodes is closer to the substrate layer 100 .

Exemplarily, the pitch before the pixel structure is 19μm-23μm. If pixel-level anti-peeping is required, when ITO is used as the first electrode, the line width of the first electrode can be 5um-15um according to the viewing angle required for anti-peeping Among them, in the case of multiple sets of sub-electrodes, the width of a single sub-electrode can be 5um-15um. The density between different groups of sub-electrodes can be selected according to the process capability to achieve large pixel level anti-peeping or sub-pixel level anti-peeping. Generally, large pixel-level anti-peeping should be able to meet the anti-peeping performance.

Exemplarily, the arrangement of multiple groups of sub-electrodes can be regarded as grids of multiple first electrodes. The overlapping parts between the grids of different groups of sub-electrodes are separated by insulating materials such as SiO2 and SiNOx. Multiple nets can be controlled separately by leading them out with lead wires. The line spacing of the grid is the minimum process capability limit, generally 2-3um, and the ITO line width can be 5-8um. The insulating material can be set in the whole layer or in a local area. For example, the insulating layer is only set in the overlapping area of the first electrode to isolate the signals of different groups of sub-electrodes, and the insulating layer can also be extended to different groups of sub-electrodes. The region where the electrodes do not overlap is not specifically limited in the example of this application.

In some embodiments, the display panel further includes: a first lead, one end of which is electrically connected to the first electrode, and the other end is used for electrically connecting the driving chip; a second lead, one end of which is electrically connected to the second electrode, and the other end is used for electrically The drive chip is connected; both the first lead and the second lead surround all pixel structures. That is, the first lead and the second lead surround the display area, and the longer the lead, the lower the resistance, which can reduce the interference of the driving signal and improve the signal uniformity.

Exemplarily, FIG. 12 is a schematic structural diagram of a display panel provided by an embodiment of the present application. As shown in Figure 12, the first lead 460 is drawn from the grid of the first electrode 410, and connected to the anti-peeping driver chip IC2 through the first connecting line 480, and the second lead 470 is drawn from the second electrode, and passed through the second The connection line 490 is connected to the anti-peeping driving chip IC2. The display panel can also include a display driver chip IC1, the display driver chip IC1 can be bound on the display panel, the display panel can also include a flexible circuit board FPC, and the anti-peeping driver chip IC2 can be bound on the flexible circuit board FPC, still an example Sexuality is not a specific limitation for the application.

It should be noted that FIG. 12 only schematically shows the first lead wire 460 and the second lead wire 470. In the case where the first electrode 410 is arranged in a grid, it can be configured according to different driving signals and driving partitions of the first electrode 410. Set the number of first lead wires 460, each first lead wire 460 can be used to independently transmit driving signals; the first electrode 410 can also be partitioned according to different pixels, for example, different pixels of red, green and blue are grouped according to color , the first electrodes 410 corresponding to all the red pixel structures R are led out through the same first lead 460 , and so on, the first electrodes 410 corresponding to the red, green and blue pixel structures can be independently driven through three first leads 460 .

Exemplarily, the first lead 460 , the second lead 470 , the first connecting wire 480 , and the second connecting wire 490 may use a Ti-AL-Ti metal stack. The first lead wire 460 and the second lead wire 470 are wound up, down, left, and right to minimize voltage drop and improve signal uniformity.

The second aspect of the embodiment of the present application provides an anti-peeping driving method for a display panel, which is applied to the display panel described in the first aspect, and FIG. 13 shows an anti-peeping driving method for a display panel provided by an embodiment of the present application. Schematic flow chart of . As shown in Figure 13, the method includes:

S901: According to the anti-peeping opening instruction, transmit a driving signal to the first electrode corresponding to the anti-peeping opening instruction.

Step S901 may include:

According to the anti-peeping opening instruction, a driving signal is transmitted to the first electrode of the target partition, wherein the first electrode is divided into at least two anti-peeping partitions, and the target partition is any anti-peeping partition.

Exemplarily, the anti-peeping function can be enabled for the key information display position of the display screen, for example, the middle area of the display screen is usually used as the area where key information The middle area is divided into at least one anti-peeping partition, and the edge area is divided into at least one anti-peeping partition. The position information of the anti-peeping partition can be added to the instruction sequence of the anti-peeping opening command to realize the partition control of the anti-peeping function.

S902: Based on the driving signal, control the color of the corresponding electrochromic layer to darken.

It should be noted that the degree of darkening of the color is mainly reflected in the light transmittance, which in turn affects the anti-peeping effect. The degree of color darkening can be controlled according to the magnitude of the driving signal. In the case that the driving signal of the second electrode is fixed, the magnitude of the driving signal of the first electrode can adjust the degree of color change of the electrochromic layer.

S903: And, according to the anti-peeping closing instruction, stop transmitting the driving signal to the first electrode corresponding to the anti-peeping closing instruction;

S904: Based on the disappearance of the driving signal, the color of the corresponding electrochromic layer becomes lighter.

The color of the electrochromic layer changes from dark to light because the drive signal is no longer transmitted to the first electrode, the drive signal disappears, the driving force for color change of the electrochromic layer disappears, and the color recovers.

In some embodiments, when the first electrode includes at least two groups of sub-electrodes, the method further includes:

According to the anti-peeping adjustment instruction, transmit the driving signal to the target sub-electrode, or stop transmitting the driving signal to the target sub-electrode, or adjust the size of the driving signal of the target sub-electrode, wherein the target sub-electrode is at least one group of the first electrodes sub-electrodes.

Exemplarily, the first group of sub-electrodes 401, the second group of sub-electrodes 402, and the third group of sub-electrodes 403 can control which group of sub-electrodes to transmit the driving signal to, and control the frequency of the driving signal according to different anti-peeping effect needs. The larger the driving signal, the stronger the electric field, the deeper the color change, and the wider the width. For example, if the first group of sub-electrodes 401 is the target sub-electrode, and the second group of sub-electrodes 402 and the third group of sub-electrodes 403 do not receive a driving signal, then the discoloration width of the electrochromic layer is the first width; the first group of sub-electrodes 401 In the case that both the sub-electrodes and the second group of sub-electrodes 402 are the target sub-electrodes in the same instruction, the discoloration width of the electrochromic layer is the second width, and the numerical value and size relationship of the driving signals corresponding to the two groups of sub-electrodes will affect the second The value of the width; when the first group of sub-electrodes 401, the second group of sub-electrodes 402 and the third group of sub-electrodes 403 are all target sub-electrodes in the same instruction, the discoloration width of the electrochromic layer is the third width, three The magnitude and magnitude relationship of the driving signals corresponding to the sub-electrodes will affect the third width. The first width is smaller than the second width, and the second width is smaller than the third width. The second group of sub-electrodes 402 is the fourth width of the electrochromic layer corresponding to the target sub-electrode, and the fourth width is smaller than the second width; the third group of sub-electrodes 403 is the color change of the electrochromic layer corresponding to the target sub-electrode The width is the fifth width, and the fifth width is smaller than the third width; the relationship between the fifth width and the fourth width may depend on the width of the electrode. Therefore, by driving different groups of sub-electrodes or combined driving of different groups of sub-electrodes, the color-changing width of the electrochromic layer 420 is controlled.

A third aspect of the embodiment of the present application provides a display device, and FIG. 14 is a schematic structural diagram of a display device provided by the embodiment of the present application. As shown in FIG. 14 , the display device includes: the display panel 1000 as described in the first aspect.

It should be noted that the display device may include a smart phone, a tablet computer, a notebook computer, a TV, or other displays, which are not specifically limited in this embodiment of the present application.

It should be noted that, in the foregoing embodiments, descriptions of each embodiment have their own emphases, and for parts that are not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still apply to the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

While the preferred embodiments of the present specification have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be interpreted to cover the preferred embodiment as well as all changes and modifications that fall within the scope of this specification.

Obviously, those skilled in the art can make various changes and modifications to this description without departing from the spirit and scope of this description. In this way, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalent technologies, this specification also intends to include these modifications and variations.

Claims (23)

1. A display panel, characterized in that, comprising: substrate layer; A plurality of pixel structures arranged on one side of the substrate layer; An electrochromic integration layer, disposed on the side of the pixel structure away from the substrate layer; The electrochromic integration layer includes a first electrode and an electrochromic layer, the first electrode has a first hollow area, and the orthographic projection of the first hollow area on the substrate layer covers the pixel structure in the an orthographic projection on the substrate layer, the orthographic projection of the first electrode on the substrate layer overlays the orthographic projection of the pixel defining structure on the substrate layer; The first electrode is used to control the color darkening of the electrochromic layer in the corresponding region under the driving of the driving signal. 2. The display panel according to claim 1, characterized in that, A pixel defining structure is arranged between adjacent pixel structures, and the orthographic projection of the first electrode on the substrate layer covers the orthographic projection of the pixel defining structure on the substrate layer. 3. The display panel according to claim 1, characterized in that, The first electrode includes at least two groups of sub-electrodes, and each group of sub-electrodes is insulated from each other. 4. The display panel according to claim 3, characterized in that, Different groups of the sub-electrodes are used to receive different driving signals. 5. The display panel according to claim 3, characterized in that, At least two groups of sub-electrodes surround different pixel structures. 6. The display panel according to claim 3, characterized in that, In the case where the same pixel structure is surrounded by at least two groups of sub-electrodes, any group of sub-electrodes is arranged on the other group of sub-electrodes between the sub-electrodes. 7. The display panel according to claim 3, characterized in that, The first electrode includes a first group of sub-electrodes, a second group of sub-electrodes and a third group of sub-electrodes; On the section cut by the connection line of two adjacent pixel structures, the second group of sub-electrodes includes at least two, the third group of sub-electrodes includes at least two, and the same group of sub-electrodes are electrically connected to each other; On the section cut by the connecting line of two adjacent pixel structures, the first group of sub-electrodes is located between at least two of the second group of sub-electrodes, and the second group of sub-electrodes is located between at least two between the third set of sub-electrodes. 8. The display panel according to claim 7, characterized in that, At least two sub-electrodes of the second group on both sides of the sub-electrodes of the first group are symmetrical with respect to the sub-electrodes of the first group on a section cut by a connecting line of two adjacent pixel structures; and /or, On a cross section cut by a connecting line between two adjacent pixel structures, at least two of the third group of sub-electrodes on both sides of the first group of sub-electrodes are symmetrical with respect to the first group of sub-electrodes. 9. The display panel according to claim 7, characterized in that, In the direction where two adjacent pixel structures are connected, the size of a single electrode of the second group of sub-electrodes and the size of a single electrode of the third group of sub-electrodes are smaller than that of the first group of sub-electrodes. Electrode size. 10. The display panel according to claim 1, further comprising: A plurality of pixel units, the pixel unit includes a plurality of pixel structures, and at least two of the pixel structures in the same pixel unit are used to emit light of different colors; The orthographic projection of the first electrode on the substrate layer surrounds the orthographic projection of the pixel unit on the substrate layer. 11. The display panel according to claim 2, characterized in that, The electrochromic integrated layer also includes a second electrode, an ion storage layer and an ion conduction layer; The ion conducting layer is disposed between the ion storage layer and the electrochromic layer, and the ion storage layer, the ion conducting layer and the electrochromic layer are all disposed between the first electrode and the electrochromic layer. between the second electrodes. 12. The display panel according to claim 11, characterized in that, The second electrode has a second hollow area, and the orthographic projection of the second hollow area on the substrate layer covers the orthographic projection of the pixel structure on the substrate layer; An orthographic projection of the second electrode on the substrate layer overlays an orthographic projection of the pixel defining structure on the substrate layer. 13. The display panel according to claim 11, characterized in that, The second electrode comprises a transparent conductive material; and/or, The first electrode includes a transparent conductive material. 14. The display panel according to claim 11, further comprising: a first lead, one end is electrically connected to the first electrode, and the other end is used to electrically connect the driving chip; a second lead, one end is electrically connected to the second electrode, and the other end is used to electrically connect the driving chip; Both the first lead and the second lead surround all the pixel structures. 15. The display panel according to claim 2, further comprising: A color filter film, arranged between the substrate layer and the electrochromic integrated layer, the color filter film includes a light-shielding structure and a color photoperiod, and the light-shielding structure is arranged on the adjacent color photoperiod Between, the orthographic projection of the light shielding structure on the substrate layer falls into the orthographic projection of the pixel defining structure on the substrate layer; and / or, The touch function layer is arranged on the side of the electrochromic integration layer away from the substrate layer. 16. The display panel according to claim 15, characterized in that, In a direction where two adjacent pixel structures are connected, the size of the light shielding structure is smaller than or equal to the size of the first electrode. 17. The display panel according to claim 1, further comprising: The polarizer is arranged on the side of the electrochromic integrated layer away from the substrate layer. 18. The display panel according to claim 1, characterized in that, The pixel structure includes a light emitting device. 19. The display panel according to claim 1, characterized in that, The first electrode is used to control the color of the electrochromic layer in the corresponding region to turn black under the driving of the driving signal. 20. An anti-peeping driving method for a display panel, which is applied to the display panel according to any one of claims 1-19, the method comprising: According to the anti-peeping opening instruction, transmit a driving signal to the first electrode corresponding to the anti-peeping opening instruction; Based on the driving signal, controlling the color of the corresponding electrochromic layer to become darker; And, according to the anti-peeping closing instruction, stop transmitting the driving signal to the first electrode corresponding to the anti-peeping closing instruction; Based on the disappearance of the driving signal, the color of the corresponding electrochromic layer becomes lighter. 21. The anti-peeping driving method of a display panel according to claim 20, wherein, in the case where the first electrode includes at least two sets of sub-electrodes, the method further comprises: According to the anti-peeping adjustment instruction, transmit the driving signal to the target sub-electrode, or stop transmitting the driving signal to the target sub-electrode, or adjust the magnitude of the driving signal of the target sub-electrode, wherein the target sub-electrode is the first electrode at least one set of sub-electrodes. 22. The anti-peeping driving method of the display panel according to claim 20, characterized in that: The transmitting a driving signal to the first electrode corresponding to the anti-peeping opening instruction according to the anti-peeping opening instruction includes: According to the anti-peeping opening instruction, the driving signal is transmitted to the first electrode of the target partition, wherein the first electrode is divided into at least two anti-peeping partitions, and the target partition is any of the anti-peeping partitions . 23. A display device, characterized in that it comprises: The display panel according to any one of claims 1-19.

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