CN215264302U

CN215264302U - Dimming panel and display device

Info

Publication number: CN215264302U
Application number: CN202121810709.XU
Authority: CN
Inventors: 王月
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-21
Anticipated expiration: 2031-08-04

Abstract

The application discloses panel and display device adjust luminance belongs to and shows technical field. The dimming panel includes: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate. The dimming panel can control the plurality of first electrodes and the plurality of second electrodes in the first substrate and the third electrode in the second substrate, so that the dimming panel forms a transparent region and a non-transparent region to display a picture, or the dimming panel converts incident light into polarized light. Thus, the dimming panel can not only display a picture, but also be used as a polarizing plate. When the dimming panel is integrated in a display device with a quarter-wave plate and a display panel, a polarizer is not required to be arranged in the display device, and the thickness of the display device is effectively reduced.

Description

Dimming panel and display device

Technical Field

The application relates to the technical field of display, in particular to a dimming panel and display equipment.

Background

With the development of the times, portable wearable devices such as smart watches or smart bracelets have come to the fore. These wearable devices are able to provide proprietary, personalized services to users.

Currently, a device body in a wearable device generally includes: the display panel comprises a first display panel and a second display panel positioned on the light-emitting side of the first display panel. The first display panel is usually an Organic Light-Emitting Diode (OLED) display panel, and the first display panel can display a complex picture with any pattern; the second display panel is typically a liquid crystal display panel, and the second display panel can display only simple pictures such as time, number of steps, and heart rate. When the device main body is in a normal display mode, the first display panel normally displays pictures, the second display panel does not display pictures, and the whole area of the second display panel is a transparent area; when the device main body is in the low power consumption display mode, the first display panel stops working, a partial area in the second display panel is a transparent area, and a partial area is a non-transparent area, so that the second display panel can display simple pictures.

In order to ensure the display effect of the device main body in the normal display mode, the reflectivity of the internal structure of the first display panel to the ambient light needs to be reduced. At present, a circular polarizer (i.e., a quarter-wave plate and a polarizer which are arranged in a stack) may be generally disposed on the light-emitting side of the first display panel. The circular polarizer can reduce the emergent amount of the ambient light entering the first display panel from the emergent surface after being reflected by the internal structure of the first display panel. However, the circular polarizer is disposed on the light-emitting side of the first display panel, which results in a larger thickness of the device body.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a dimming panel and display equipment. The problem that the thickness of the device body in the prior art is large can be solved, and the technical scheme is as follows:

in one aspect, there is provided a dimming panel, including: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate;

the first substrate includes: the array type display device comprises a first substrate, a plurality of first electrodes arranged in an array and a plurality of second electrodes arranged in an array, wherein the plurality of first electrodes and the plurality of second electrodes are positioned on the first substrate;

the second substrate includes: a second substrate, and a third electrode on the second substrate;

wherein the first electrode and the third electrode are configured to control the liquid crystal layer to be in a light-transmitting state, so that a transparent region is formed on the dimming panel;

the first electrode and the third electrode are further configured to control the liquid crystal layer to be in a non-transparent state, so that a non-transparent region is formed on the dimming panel;

the plurality of second electrodes are configured to control the liquid crystal layer to be in a polarization state, to allow the liquid crystal layer to transmit incident light of a target polarization direction and to absorb incident light of other polarization directions to emit polarized light of the target polarization direction from the dimming panel.

Optionally, a voltage is applied between every two adjacent second electrodes, so that the liquid crystal layer is in a polarization state.

Optionally, the first substrate has: the display device comprises a pattern display area and a non-display area positioned on the periphery of the pattern display area, wherein the plurality of first electrodes are positioned in the pattern display area, and the plurality of second electrodes are positioned in the pattern display area and the non-display area.

Optionally, at least a part of the first electrode and the second electrode located in the pattern display area are multiplexed.

Optionally, the second electrodes are strip-shaped electrodes, the plurality of second electrodes include a target second electrode, the target second electrode passes through the pattern display area and the non-display area, the target second electrode is disconnected at a junction between the pattern display area and the non-display area, and a portion of the target second electrode located in the pattern display area is used as the first electrode.

Optionally, the first substrate has: the display device comprises a pattern display area and a non-display area positioned on the periphery of the pattern display area, wherein the plurality of first electrodes are positioned in the pattern display area, and the plurality of second electrodes are positioned in the non-display area.

Optionally, the plurality of second electrodes include two second electrode groups, the voltage signal lines connected to the second electrodes in each second electrode group are connected in series, and the second electrodes in one second electrode group are staggered with the second electrodes in another second electrode group one by one.

Optionally, the liquid crystal layer includes: polymer Dispersed Liquid Crystal (PDLC);

a voltage is loaded between the first electrode and the third electrode, so that the liquid crystal layer is in the light-transmitting state; and no voltage is loaded between the first electrode and the third electrode, so that the liquid crystal layer is in the non-light-transmitting state.

In another aspect, there is provided a display apparatus including: a display panel and a dimming panel which are arranged in a stacked manner;

the dimming panel is located on the light emitting side of the display panel, and is the dimming panel.

Optionally, the display device further includes: a quarter wave plate located between the display panel and the dimming panel.

Optionally, the display device is a device body in a wearable device.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a dimming panel, comprising: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate. The dimming panel can control the plurality of first electrodes and the plurality of second electrodes in the first substrate and the third electrode in the second substrate, so that the dimming panel forms a transparent region and a non-transparent region to display a picture, or the dimming panel converts incident light into polarized light. Thus, the dimming panel can not only display a picture, but also be used as a polarizing plate. When the dimming panel is integrated in a display device with a quarter-wave plate and a display panel, a polarizer is not required to be arranged in the display device, and the thickness of the display device is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a film structure of a dimming panel according to an embodiment of the present disclosure;

fig. 2 is a top view of a first substrate according to an embodiment of the present disclosure;

fig. 3 is a schematic view of the dimming panel shown in fig. 1 forming a transparent region;

fig. 4 is a schematic view of the dimming panel shown in fig. 1 as a polarizer;

fig. 5 is a top view of another first substrate provided in an embodiment of the present application;

fig. 6 is a top view of a first substrate according to an embodiment of the present disclosure;

FIG. 7 is a top view of yet another first substrate provided in an embodiment of the present application;

fig. 8 is a schematic diagram illustrating a connection between a dimming panel and a voltage signal line according to an embodiment of the present disclosure;

fig. 9 is a schematic distribution diagram of a pattern display area and a non-display area in a dimming panel according to an embodiment of the present application;

FIG. 10 is an enlarged view of the pattern display area of FIG. 9 at C;

fig. 11 is an exploded view of a display device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic view illustrating a film structure of a dimming panel according to an embodiment of the present disclosure. The dimming panel 000 may include: a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer 300 between the first substrate 100 and the second substrate 200.

To clearly see the structure of the first substrate 100 in the dimming panel 000, please refer to fig. 2, where fig. 2 is a top view of the first substrate according to an embodiment of the present disclosure. The first substrate 100 in the dimming panel 000 may include: a first substrate 101, and a plurality of first electrodes 102 arranged in an array and a plurality of second electrodes 103 arranged in an array on the first substrate 101. Illustratively, the first electrode 102 and the second electrode 103 are both located on a side of the first substrate 101 facing the second substrate 200.

The second substrate 200 in the dimming panel 000 may include: a second substrate 201, and a third electrode 202 on the second substrate 201. Illustratively, the third electrode 202 is located on a side of the second substrate 201 facing the first substrate 100.

In the present embodiment, the first electrode 102 and the third electrode 202 are configured to: the liquid crystal layer 300 is controlled to be in a light transmitting state so that a transparent region is formed on the dimming panel 000. Illustratively, as shown in fig. 3, fig. 3 is a schematic diagram of the dimming panel shown in fig. 1 forming a transparent region. The dimming panel 000 may apply two different potentials to the first electrode 102 and the third electrode 202, respectively, so that a voltage is applied between the first electrode 102 and the third electrode 202. For example, the dimming panel 000 may apply a negative electrode potential to the first electrode 102 and a positive electrode potential to the third electrode 202. Thus, a vertical electric field can be formed between the two, the liquid crystal between the two can be deflected under the action of the vertical electric field, and the long axis of the deflected liquid crystal is parallel to the direction of the vertical electric field. Thus, the external light can penetrate through the region where the first electrode 102 is located, i.e., the transparent region is formed on the dimming panel 000.

The first electrode 102 and the third electrode 202 are further configured to: the liquid crystal layer 300 is controlled to be in a non-transmissive state, so that a non-transparent region is formed on the dimming panel 000. For example, the dimming panel 000 may simultaneously apply the same potential to the first electrode 102 and the third electrode 202, such that no voltage is applied between the first electrode 102 and the third electrode 202. For example, the dimming panel 000 may simultaneously apply a potential of 0 v to the first electrode 102 and the third electrode 202, that is, the first electrode 102 and the third electrode 202 are simultaneously not applied with a potential. Thus, a vertical electric field is not formed between the two, and the liquid crystal between the two is randomly arranged. Thus, the external light cannot penetrate through the region where the first electrode 102 is located, i.e., the opaque region is formed on the dimming panel 000.

In the present embodiment, the plurality of second electrodes 103 are configured to: the liquid crystal layer 300 is controlled to be in a polarization state such that the liquid crystal layer 300 transmits the incident light of the target polarization direction and absorbs the incident light of the other polarization direction to emit the polarized light of the target polarization direction from the dimming panel 000. That is, the dimming panel 000 can convert incident light into polarized light, and the dimming panel 000 may function as a polarizer.

Illustratively, as shown in fig. 4, fig. 4 is a schematic diagram of the dimming panel shown in fig. 1 as a polarizer. The dimming panel 000 may apply a potential to the plurality of second electrodes 103 such that the potentials applied to each two adjacent second electrodes 103 of the plurality of second electrodes 103 are different, so as to apply a voltage between each two adjacent second electrodes 103. For example, one of every two adjacent second electrodes 103 may be loaded with a positive electrode potential and the other may be loaded with a negative electrode potential. Thus, a transverse electric field is formed between the two, and under the action of the transverse electric field, the liquid crystal in the liquid crystal layer 300 is deflected, and the long axis of the deflected liquid crystal is parallel to the substrate (i.e., the first substrate 100 or the second substrate 200). Thus, the incident light with the target polarization direction parallel to the long axis of the liquid crystal in the external light incident on the dimming panel 000 can pass through the dimming panel 000, and the incident light with other polarization directions can be absorbed by the liquid crystal, so that the dimming panel 000 can emit the polarized light with the polarization direction parallel to the long axis of the liquid crystal.

It should be noted that the structure of the first substrate 100 in fig. 1 and 3 is a schematic diagram of the film layer structure at a-a 'of fig. 2, and the structure of the first substrate 100 in fig. 4 is a schematic diagram of the film layer structure at B-B' of fig. 2. It should be further noted that, when the dimming panel 000 is required to display a picture, the dimming panel 000 may control the plurality of first electrodes 102, the plurality of second electrodes 103, and the third electrode 202, so that a voltage is applied between a part of the first electrodes 102 and the third electrode 202, no voltage is applied between another part of the first electrodes 102 and the third electrode 202, and no voltage is applied between the plurality of second electrodes 103 and the third electrode 202. In this way, the partial region of the dimming panel 000 is a transparent region, and the partial region is a non-transparent region, so that the dimming panel 000 can display a screen.

In summary, the embodiment of the present application provides a dimming panel, including: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate. The dimming panel can control the plurality of first electrodes and the plurality of second electrodes in the first substrate and the third electrode in the second substrate, so that the dimming panel forms a transparent region and a non-transparent region to display a picture, or the dimming panel converts incident light into polarized light. Thus, the dimming panel can not only display a picture, but also be used as a polarizing plate. When the dimming panel is integrated in a display device with a quarter-wave plate and a display panel, a polarizer is not required to be arranged in the display device, and the thickness of the display device is effectively reduced.

For example, the liquid crystal layer in the dimming panel 000 may include: polymer Dispersed Liquid Crystal (PDLC).

The working principle of the PDLC is as follows: PDLC is prepared through mixing low molecular liquid crystal with pre-polymer, polymerizing to form micron level liquid crystal particle dispersed homogeneously in polymer matrix, and utilizing the dielectric anisotropy of liquid crystal molecule to obtain material with electrooptical response characteristic without need of polarizer and orientation layer. The optical properties of PDLC depend on how well the effective refractive index of the liquid crystal molecules matches the refractive index of the polymer matrix. When no voltage is applied to the PDLC, the liquid crystal molecules are arranged in a disordered mode, and incident light irradiates the PDLC and then is refracted and reflected on the interface of the liquid crystal molecules and the polymer matrix for multiple times, so that a milky scattering state is displayed. When voltage is applied to the PDLC, liquid crystal molecules are arranged along the direction of an electric field, and incident light can directly penetrate through the PDLC without reflection and refraction after being irradiated to the PDLC.

In the embodiment of the present application, as shown in fig. 2, the first substrate 101 in the first base plate 100 has a pattern display region 101a and a non-display region 101 b. The plurality of first electrodes 102 in the first substrate 100 are all located in the pattern display area 101 a. The dimming panel 000 may control the plurality of first electrodes 102 so that the display region 101a in the dimming panel 000 can display a screen. For example, it can display some simple pictures such as time, number of steps, and heart rate.

At least a portion of the second electrodes 103 of the plurality of second electrodes 103 in the first substrate 100 is located in the non-display region 101 b. For example, fig. 2 schematically illustrates an example in which some of the second electrodes 103 in the plurality of second electrodes 103 are located in the non-display region 101b, and some of the second electrodes 103 are located in both the pattern display region 101a and the non-display region 101 b. That is, the plurality of second electrodes 103 in fig. 2 are positioned in the pattern display area 101a and the non-display area 101 b. In this case, the dimming panel 000 may control the plurality of second electrodes 103 so that the entire panel of the dimming panel 000 can convert the incident light into polarized light.

In other alternative implementations, as shown in fig. 5, fig. 5 is a top view of another first substrate provided in the embodiments of the present application. The plurality of second electrodes 103 in the first substrate 100 are all located in the non-display region 101 b. In this case, the dimming panel 000 may control the plurality of second electrodes 103 so that the non-display region 101b in the dimming panel 000 can convert incident light into polarized light. Since the dimming panel 000 generally displays some simple pictures such as time, number of steps, and heart rate, the area of the pattern display area 101a in the dimming panel 000 is generally small, and the area of the non-display area 101b is generally large. Therefore, when the dimming panel 000 is integrated in a display device having a quarter-wave plate and a display panel, it is only necessary to ensure that the non-display region 101b with a large area can convert incident light into polarized light, so that the reflectivity of the display panel in the display device to ambient light can be reduced.

In order to further reduce the reflectivity of the display panel in the display device to the ambient light, it is necessary to ensure that the entire panel of the dimming panel 000 can convert the incident light into polarized light. For this reason, the following embodiments are each schematically illustrated by taking as an example that a plurality of second electrodes 103 are positioned in the pattern display region 101a and the non-display region 101 b.

Referring to fig. 6 and 7, fig. 6 is a top view of another first substrate provided in this embodiment of the present application, and fig. 7 is a top view of another first substrate provided in this embodiment of the present application. The first electrodes 102 and the second electrodes 103 in the first substrate 100 may be strip-shaped electrodes, and the extending direction of each first electrode 102 is the same as that of each second electrode 103. In the first substrate 100, at least a portion of the first electrode 102 is multiplexed with the second electrode 103 located in the pattern display region 101 a. That is, the plurality of first electrodes 102 in the first substrate 100 includes: and a second electrode 103 positioned in the pattern display region 101 a. In this case, at least a portion of the first electrodes 102 in the plurality of first electrodes 102 is the same electrode as a portion of the plurality of second electrodes 103 located in the pattern display region 101 a.

For example, the plurality of second electrodes 103 in the first substrate 100 may include: a target second electrode 103a, the target second electrode 103a passing through the pattern display area 101a and the non-display area 101 b. The plurality of second electrodes 103 in the first substrate 100 may further include: and other second electrodes 103b, wherein the other second electrodes 103b are all located in the non-display region 101 b. That is, among the plurality of second electrodes 103, only the second electrode 103 located in the non-display region 101b is the other second electrode 103 b; the second electrode 103 located in both the non-display area 101b and the pattern display area 101a is a target second electrode 103 a.

Wherein each target second electrode 103a of the plurality of second electrodes 103 is disconnected at the boundary of the pattern display region 101a and the non-display region 101 b. A portion of the target second electrode 103a located in the pattern display area 101a serves as the first electrode 102.

In this case, a portion of the target second electrode 103a located in the pattern display region 101a may be controlled separately from a portion located in the non-display region 101b, so that the portion of the target second electrode 103a located in the pattern display region 101a can be used as both the first electrode 102 to implement the display function of the dimming panel 000 and the polarization function of the dimming panel 000.

When the dimming panel 000 needs to display a picture, the dimming panel 000 controls the plurality of second electrodes 103 such that a voltage is applied between the portion of the target second electrode 103a located in the pattern display region 101a and the third electrode 202, and no voltage is applied between the portion of the target second electrode 103a located in the non-display region 101b and the third electrode 202. That is, a portion of the target second electrode 103a located in the pattern display region 101a is applied with a potential, and a portion located in the non-display region 101b is not applied with a potential. It is ensured that the pattern can be displayed in the pattern display area 101a and the pattern is not displayed in the non-display area 101 b.

When the dimming panel 000 is required to be a polarizing plate, the dimming panel 000 controls the plurality of second electrodes 103 such that the portion of the target second electrode 103a located in the pattern display region 101a and the portion located in the non-display region 101b are applied with the same potential, so that a voltage is applied between every adjacent two second electrodes 103. The dimming panel 000 is ensured to convert the incident light into polarized light.

It should be noted that, in fig. 6, a part of the first electrodes 102 in the plurality of first electrodes 102 is multiplexed with the second electrodes 103 located in the pattern display area 101a, that is, a part of the plurality of target second electrodes 103a located in the pattern display area 101a may be used as a part of the first electrodes 102 in the plurality of first electrodes 102. In fig. 7, all the first electrodes 102 are multiplexed with the second electrodes 103 located in the pattern display area 101a, that is, a portion of each target second electrode 103a located in the pattern display area 101a may be used as one first electrode 102. It should be noted that, when all the first electrodes 102 and the second electrodes 103 located in the pattern display area 101a are used together, the effect of converting the incident light into the polarized light by the dimming panel 000 is ensured to be better on the premise that the pattern displayed in the pattern display area 101a is better.

In the embodiment of the present application, as shown in fig. 8, fig. 8 is a schematic connection diagram of a dimming panel and a voltage signal line provided in the embodiment of the present application. The plurality of second electrodes 103 may include: and the voltage signal lines 400 connected with the second electrodes 103 in each second electrode group are connected in series, and the second electrodes 103 in one second electrode group are staggered with the second electrodes 103 in the other second electrode group one by one. The voltage signal line 400 may include: a first voltage signal line 400a and a second voltage signal line 400 b. The second electrodes 103 in one second electrode group are connected in series through the first voltage signal line 400a, and the second electrodes 103 in the other second electrode group are connected in series through the second voltage signal line 400 b. In this case, the second electrodes 103 in each second electrode group can be connected to the power output terminals of the driver chip through the same voltage signal line 400, and it is not necessary to connect each second electrode 103 to the power output terminals of the driver chip through a single-ended signal line, so that the number of output terminals of the driver chip can be reduced.

For example, the potentials applied to each second electrode 103 in the same second electrode group are the same, and the potentials applied to the second electrodes in different second electrode groups are different. Since the second electrodes 103 in one second electrode group are staggered with the second electrodes 103 in another second electrode group, a potential difference can be formed between every two adjacent second electrodes 103 in the first substrate 100, that is, a voltage is applied between every two adjacent second electrodes 103. In this way, a transverse electric field is generated between every two adjacent second electrodes 103, and under the action of the transverse electric field, the liquid crystal in the liquid crystal layer 300 deflects, so that the incident light in the target deflection direction parallel to the long axis of the liquid crystal in the external light incident on the dimming panel 000 can pass through the dimming panel 000, and the incident light in other polarization directions can be absorbed by the liquid crystal.

Fig. 8 illustrates a series relationship among the plurality of second electrodes 103 when the first electrode 102 is not multiplexed with the second electrode 103 in the pattern display region 101 a.

In other alternative implementations, in the case that at least part of the first electrode 102 and the second electrode 103 located in the pattern display area 101a are multiplexed, it is assumed that a part of the target second electrode 103a located in the pattern display area 101a is the first electrode 102, and a part located in the non-display area 101b is the fourth electrode. Then, for the plurality of fourth electrodes in the non-display area, may include: and the voltage signal lines 400 connected with the fourth electrodes in each fourth electrode group are connected in series, and the fourth electrodes in one fourth electrode group and the fourth electrodes in the other fourth electrode group are distributed in a one-to-one staggered manner.

For the plurality of first electrodes 102 within the pattern display area, the plurality of first electrodes 102 may include: the voltage signal lines 400 connected with the first electrodes in each first electrode group are connected in series, and the first electrodes 102 in one first electrode group are distributed in a one-to-one staggered manner with the first electrodes 102 in the other first electrode group.

When the dimming panel 000 needs to display a picture, the dimming panel 000 controls the plurality of fourth electrodes and the first electrode 102, so that a voltage is applied between the first electrode 102 and the third electrode 202, and no voltage is applied between the fourth electrode and the third electrode 202, thereby ensuring that a pattern can be displayed in the pattern display area 101a and a pattern cannot be displayed in the non-display area 101 b.

When the dimming panel 000 is required to be a polarizing plate, the dimming panel 000 controls the plurality of fourth electrodes and the first electrodes 102 such that the first electrodes 102 and the fourth electrodes are applied with the same potential, so that a voltage is applied between every two adjacent first electrodes 102 and every two adjacent fourth electrodes. The dimming panel 000 is ensured to convert the incident light into polarized light.

Optionally, please refer to fig. 9 and 10, in which fig. 9 is a schematic distribution diagram of a pattern display area and a non-display area in a dimming panel provided in an embodiment of the present application, and fig. 10 is an enlarged view of the pattern display area at C in fig. 9. In fig. 9, a black area represents the pattern display area 101a, and a white area represents the non-display area 101 b. The pattern display region 101a in the first substrate 101 may include a plurality of sub display regions a1 arranged at intervals. For example, as illustrated in fig. 10, the pattern display area 101a includes: a pattern area of "numeral 8" consisting of seven sub-display areas a 1. A plurality of stripe-shaped first electrodes 102 are distributed in each sub-display region a1, and the dimming panel 000 can control the first electrodes 102 in different sub-display regions a1, so that the pattern region of "figure 8" can display different figures. In this way, the dimming panel 000 can display simple pictures such as time, number of steps, and heart rate. Note that, in fig. 10, two of the square areas in the pattern area of the "number 8" are non-display areas 101b, and the second electrode 103 needs to be disposed in the non-display area 101b, and here, the second electrode 103 is not shown for more convenient viewing of the pattern display area.

In conjunction with the above embodiments, the dimming panel 000 may have a display mode and a polarization mode.

As an example, there are two possible cases for the display mode of the dimming panel 000. In one case, when the portions of the first electrode 102 and the second electrode 103 located in the pattern display region 101a are not multiplexed, the dimming panel 000 controls the plurality of first electrodes 102 and the plurality of second electrodes 103 such that a voltage is applied between a portion of the first electrodes 102 and the third electrode 202, a voltage is not applied between a portion of the first electrodes 102 and the third electrode 202, and a voltage is not applied between the second electrode 103 and the third electrode 202. In this way, the partial region of the dimming panel 000 is a transparent region, and the partial region is a non-transparent region, so that the dimming panel 000 can display a screen.

In another case, when the first electrode 102 and a portion of the second electrode 103 located in the pattern display area 101a are multiplexed, the light modulation panel 000 controls the plurality of first electrodes 102 and the plurality of second electrodes 103 such that a voltage is applied between a portion of the first electrodes 102 and the plurality of third electrodes 202, a voltage is also applied between a portion of the second electrode 103 located in the pattern display area 101a (i.e., the first electrode 102) and the plurality of third electrodes 202, and a voltage is not applied between the portion of the second electrode 103 located in the non-display area 101b and the plurality of third electrodes 202. In this way, the partial region of the dimming panel 000 is a transparent region, and the partial region is a non-transparent region, so that the dimming panel 000 can display a screen.

As an example, there are two possible cases for the polarization mode of the dimming panel 000. In one case, when the first electrode 102 and the second electrode 103 are not multiplexed at the portion located in the pattern display region 101a, the dimming panel 000 controls the plurality of second electrodes 103 and the first electrode 102, a voltage is applied between every two adjacent second electrodes 103, and no potential is applied to the first electrode 102, so that the dimming panel 000 can form polarized light.

In another case, when the first electrodes 102 are multiplexed with the portion of the second electrodes 103 located in the pattern display region 101a, the dimming panel 000 controls the plurality of second electrodes 103 such that a voltage is applied between every two adjacent second electrodes 103 of the second electrodes 103 located in the non-display region 101b, and a voltage is also applied between every two adjacent first electrodes 102 of the portion (i.e., the first electrodes 102) of the second electrodes 103 located in the pattern display region 101a, so that the dimming panel 000 can form polarized light.

In the present embodiment, there are various structures of the third electrode 202 in the second substrate 200, and the present embodiment is schematically illustrated by taking the following two realizable manners as examples.

First, the third electrode 202 may have the first sub-common electrode and the second sub-common electrode disconnected. An orthogonal projection of the first sub-common electrode on the first substrate 101 is located in the pattern display area 101a, and an orthogonal projection of the second sub-common electrode on the first substrate 101 is located in the non-display area. The first sub-common electrode and the second sub-common electrode are respectively connected with two common voltage supply terminals.

In a second implementation manner, the third electrode 202 is a planar electrode disposed in a whole layer, and the third electrode 202 is electrically connected to the ground of the light control panel 000.

Optionally, the first electrode 102, the second electrode 103, and the third electrode 202 in the above embodiments are all transparent conductive electrodes. Such as Indium Tin Oxide (ITO).

An embodiment of the present application further provides a display device, as shown in fig. 11, fig. 11 is an exploded view of the display device provided in the embodiment of the present application. The display device may include: a display panel 001 and a dimming panel 000 which are stacked. The dimming panel 000 is located on the light emitting side of the display panel 001, and the dimming panel 000 is the dimming panel 000 in the above embodiment. For example, the display panel 001 may be an OLED display panel or a liquid crystal display panel.

In an embodiment of the present application, the display device is a device body in a wearable device. For example, the wearable device may be a smart watch or a smart bracelet.

Optionally, the display device may further include: a quarter wave plate 002 is positioned between the display panel 001 and the dimming panel 000. For example, when the dimming panel 000 is used as a polarizer, after the external light passes through the dimming panel 000, the light is converted into linearly polarized light, the linearly polarized light passes through the quarter-wave plate 002 and is converted into left circularly polarized light, the left circularly polarized light is reflected by the electrodes in the display panel 001 and is converted into right circularly polarized light, the right circularly polarized light passes through the quarter-wave plate 002 and is converted into linearly polarized light, wherein the linearly polarized light exiting from the quarter-wave plate 002 is perpendicular to the linearly polarized light entering the quarter-wave plate 002, so that the external light reflected by the electrodes in the display panel 001 cannot exit, and the reflectivity of the display panel 001 to the ambient light is reduced.

When the display device is in the low power display mode, the display panel 001 does not display a picture, and the dimming panel 000 may control the plurality of first electrodes 102 and the plurality of second electrodes 103 in the first substrate 100 and the third electrode 202 in the second substrate 200 such that the dimming panel 000 forms transparent and non-transparent regions to enable it to display simple pictures such as time, steps, heart rate, and the like.

When the display device is in the normal display mode, the display panel 001 displays a picture, and the dimming panel 000 does not display a picture, which may assume a transparent state having a polarization function. For example, the dimming panel 000 may control the plurality of second electrodes 103 in the first substrate 100, so that the dimming panel 000 can convert incident light into polarized light. After the light modulation panel 000 is matched with the quarter-wave plate, the reflectivity of the display panel 001 to the ambient light can be weakened, and the display effect of the display device is better.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims

1. A dimming panel, comprising: a first substrate (100) and a second substrate (200) which are oppositely arranged, and a liquid crystal layer (300) which is positioned between the first substrate (100) and the second substrate (200);

the first substrate (100) includes: a first substrate (101), and a plurality of first electrodes (102) arranged in an array and a plurality of second electrodes (103) arranged in an array on the first substrate (101);

the second substrate (200) includes: a second substrate (201), and a third electrode (202) located on the second substrate (201);

wherein the first electrode (102) and the third electrode (202) are configured to control the liquid crystal layer (300) in a light transmitting state such that a transparent region is formed on the dimming panel (000);

the first electrode (102) and the third electrode (202) are further configured to control the liquid crystal layer (300) to be in a non-transmissive state such that a non-transparent region is formed on the dimming panel (000);

the plurality of second electrodes (103) are configured to control the liquid crystal layer (300) to be in a polarization state, to allow the liquid crystal layer (300) to transmit incident light of a target polarization direction and to absorb incident light of other polarization directions to emit polarized light of the target polarization direction from the dimming panel (000).

2. The dimming panel of claim 1, wherein a voltage is applied between every two adjacent second electrodes (103) to place the liquid crystal layer (300) in a polarized state.

3. The dimming panel according to claim 2, wherein the first substrate (101) has: the display device comprises a pattern display area (101a) and a non-display area (101b) located at the periphery of the pattern display area (101a), wherein the plurality of first electrodes (102) are located in the pattern display area (101a), and the plurality of second electrodes (103) are located in the pattern display area (101a) and the non-display area (101 b).

4. The dimming panel according to claim 3, wherein at least part of the first electrodes (102) and the second electrodes (103) located within the pattern display area (101a) are multiplexed.

5. The dimming panel of claim 4, wherein the second electrode (103) is a stripe electrode, the plurality of second electrodes (103) comprises a target second electrode (103a), the target second electrode (103a) passes through the pattern display region (101a) and the non-display region (101b), the target second electrode (103a) is disconnected at a boundary between the pattern display region (101a) and the non-display region (101b), and a portion of the target second electrode (103a) located in the pattern display region (101a) serves as the first electrode (102).

6. The dimming panel according to claim 2, wherein the first substrate (101) has: the display device comprises a pattern display area (101a) and a non-display area (101b) located on the periphery of the pattern display area (101a), wherein the plurality of first electrodes (102) are located in the pattern display area (101a), and the plurality of second electrodes (103) are located in the non-display area (101 b).

7. The dimming panel of any of claims 2 to 6, wherein the plurality of second electrodes (103) comprises two second electrode groups, the voltage signal lines (400) connected to the second electrodes (103) in each second electrode group are connected in series, and the second electrodes (103) in one second electrode group are staggered with the second electrodes (103) in another second electrode group.

8. The dimming panel according to any of claims 1 to 6, the liquid crystal layer (300) comprising: polymer Dispersed Liquid Crystal (PDLC);

wherein a voltage is applied between the first electrode (102) and the third electrode (202) to place the liquid crystal layer (300) in the light transmissive state; no voltage is applied between the first electrode (102) and the third electrode (202), so that the liquid crystal layer (300) is in the non-light-transmitting state.

9. A display device, comprising: a display panel (001) and a light control panel (000) which are arranged in a stacked manner;

wherein the dimming panel (000) is located at a light emitting side of the display panel (001), and the dimming panel (000) is the dimming panel (000) of any one of claims 1 to 7.

10. The display device according to claim 9, characterized in that the display device further comprises: a quarter wave plate (002) located between the display panel (001) and the dimming panel (000).

11. The display device according to claim 9, wherein the display device is a device body in a wearable device.