CN117794315A

CN117794315A - Display panel and display device

Info

Publication number: CN117794315A
Application number: CN202311837510.XA
Authority: CN
Inventors: 郭秋月; 谢俊烽
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2023-12-27
Filing date: 2023-12-27
Publication date: 2024-03-29

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a substrate, a plurality of first anodes are paved on the substrate at intervals, a pixel definition layer is arranged between two adjacent first anodes, a light-emitting layer is arranged on the first anodes, and a cathode layer is paved on the light-emitting layer and the pixel definition layer; the cathode layer is provided with a packaging layer, and a shading layer is arranged at the position of the packaging layer corresponding to the pixel definition layer; an optical thinning film layer, an electrochromic layer and a reflecting layer are arranged in the pixel defining layer, the reflecting layer and the electrochromic layer are arranged on one side of the pixel defining layer far away from the cathode layer, and the electrochromic layer is arranged on the reflecting layer in a lamination manner; the light thinning film layer is positioned at one side of the pixel definition layer, which is close to the cathode layer; the electrochromic layer is in a black state when the display panel is in the first mode and is switched from the black state to a transparent state when the display panel is in the second mode. According to the display control method and device, the display effect and quality of the display panel in different display modes are improved.

Description

Display panel and display device

Technical Field

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

Background

With the superiority of the display effect of an OLED (Organic Light-Emitting Diode) display panel, the application of the OLED display panel is becoming wider, and the OLED display panel has been related to a plurality of fields such as televisions, notebooks, and vehicle-mounted displays, but the OLED display has a reflection phenomenon, which deteriorates the display effect of the display panel and causes the display quality of the panel to be reduced.

At present, a low reflection mode and an energy-saving mode exist in a common display module, and the low reflection mode aims at reducing internal reflection of a display panel and guaranteeing a display effect; the energy-saving mode aims at reducing the power consumption of the display panel, and the user satisfaction is improved through switching between two different modes; however, in the current low reflection mode, the light is difficult to be absorbed well only through the light shielding layer, the reflection reducing effect is poor, and in the energy saving mode, the brightness of the display panel is low, and the display effect is affected.

Therefore, how to improve the display effect and quality of the display panel in different display modes is a problem to be solved in the art.

Disclosure of Invention

The application discloses a display panel and display device, purpose is promotion display panel's display effect and quality under different display modes.

The application discloses a display panel, which comprises a substrate, wherein a plurality of first anodes are paved on the substrate at intervals, a pixel definition layer is arranged between two adjacent first anodes, a light-emitting layer is arranged on the first anodes, and a cathode layer is paved on the light-emitting layer and the pixel definition layer; the cathode layer is provided with an encapsulation layer, and a light shielding layer is arranged at the position of the encapsulation layer corresponding to the pixel definition layer; an optical thinning film layer, an electrochromic layer and a reflecting layer are arranged in the pixel definition layer, the reflecting layer and the electrochromic layer are positioned on one side of the pixel definition layer far away from the cathode layer, and the electrochromic layer is arranged on the reflecting layer in a lamination manner; the light thinning film layer is positioned on one side of the pixel definition layer, which is close to the cathode layer; the electrochromic layer is in a black state when the display panel is in a first mode, and is switched from the black state to a transparent state when the display panel is in a second mode.

Optionally, the refractive index of the light thinning film layer is smaller than the refractive index of the pixel defining layer.

Optionally, a driving electrode layer is further disposed between the substrate and the pixel defining layer and between the substrate and the plurality of first anodes, a second anode is further disposed in the pixel defining layer, and the electrochromic layer is connected with the driving electrode layer through the second anode; and when the voltage of the electrochromic layer controlled by the second anode reaches a first preset voltage, the electrochromic layer is switched between a black state and a transparent state.

Optionally, the first preset voltage ranges from 1v to 1.5 v.

Optionally, the light-thinning film layer and the cathode layer on the light-emitting layer are arranged in the same layer, and the reflecting layer and the electrochromic layer are arranged in the same layer as the first anode.

Optionally, the sides of the light thinning film layer, the reflecting layer and the electrochromic layer are of a folded line type or a linear type, and the reflecting layer and the electrochromic layer are the same in shape; the orthographic projection area of the shading layer on the substrate is larger than or equal to the orthographic projection area of the photophobic film layer on the substrate; the orthographic projection area of the photophobic film layer on the substrate is larger than or equal to the orthographic projection area of the electrochromic layer on the substrate; the orthographic projection area of the electrochromic layer on the substrate is larger than or equal to the orthographic projection area of the reflecting layer on the substrate.

Optionally, the light is dredged the rete and is the linear type, the electrochromic layer with the reflection stratum is the broken line type, the electrochromic layer with the reflection stratum all includes first connecting portion and second connecting portion, the one end of first connecting portion with the one end of second connecting portion is connected, just first connecting portion with the contained angle of second connecting portion is greater than 135, just is less than 180.

Optionally, the light is dredged the rete and is broken line type, electrochromic layer with the reflection stratum is the linear type, the light is dredged the rete and is included first connecting portion and second connecting portion, the one end of first connecting portion with the one end of second connecting portion is connected, just first connecting portion with the contained angle of second connecting portion is greater than 135, just is less than 180.

Optionally, the light-thinning film layer, the electrochromic layer and the reflecting layer are all broken lines, the light-thinning film layer includes a first connecting portion and a second connecting portion, one end of the first connecting portion is connected with one end of the second connecting portion, and an included angle between the first connecting portion and the second connecting portion is greater than 135 ° and smaller than 180 °; the electrochromic layer and the reflecting layer comprise a third connecting part and a fourth connecting part, one end of the third connecting part is connected with one end of the fourth connecting part, and the included angle between the third connecting part and the fourth connecting part is larger than 135 degrees and smaller than 180 degrees; the included angle between the first connecting part and the second connecting part is opposite to the included angle between the third connecting part and the fourth connecting part.

The application also discloses a display device, including the casing, display device still includes foretell display panel, display panel sets up in the casing.

The light thinning film layer, the electrochromic layer and the reflecting layer are matched with each other, so that the effect of reducing reflection of the display panel when the display panel is in a first mode or keeping the display brightness of the display panel unchanged when the display panel is in a second mode is achieved; when external light is stronger, the light enters the display panel, the light shielding layer firstly absorbs the light right above and at two sides of the display panel, the light is concentrated to the electrochromic layer after the light is firstly adjusted in the light direction through the light thinning film layer, and at the moment, if the display panel is in a first mode, the electrochromic layer is in a black state and absorbs the external light, so that the aim of assisting the light shielding layer to absorb the external light, reducing reflection and improving the display quality of the panel is fulfilled; if the display panel is in the second mode, the electrochromic layer is switched to a transparent state, external light irradiates the reflecting layer through the electrochromic layer, and the light is reflected to the display area through the reflecting layer to lighten, so that the brightness and the display effect of the display panel are improved; namely, the light shielding layer can be assisted to absorb external light by interaction among the light thinning film layer, the electrochromic layer and the reflecting layer when the display panel is in the first mode, so that the display effect of the panel is improved; the brightness of the display panel can be compensated by utilizing external light when the display panel is in the second mode, so that the display effect and quality of the display panel in different display modes can be effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, from which other drawings can be obtained without inventive effort for a person skilled in the art, in which:

FIG. 1 is a schematic view of a first embodiment of a display panel of the present application;

FIG. 2 is a schematic view of an external light path of the display panel according to the first embodiment of the display panel;

FIG. 3 is a schematic diagram of a second embodiment of a display panel of the present application;

FIG. 4 is a schematic view of an external light path of a second embodiment of the display panel according to the present application;

FIG. 5 is a schematic diagram of a third embodiment of a display panel of the present application;

FIG. 6 is a schematic view of an external light path of a third embodiment of a display panel according to the present disclosure;

FIG. 7 is a schematic view of a fourth embodiment of a display panel of the present application;

FIG. 8 is a schematic view of an external light ray in a fourth embodiment of a display panel according to the present application;

fig. 9 is a schematic diagram of an embodiment of a display device of the present application.

10, a display device; 100. a display panel; 200. a housing; 300. a display area; 110. a substrate base; 111. a light shielding layer; 120. a first anode; 130. a pixel definition layer; 140. a light emitting layer; 150. a cathode layer; 160. an optical thinning film layer; 170. an electrochromic layer; 180. a reflective layer; 121. a second anode; 122. a driving electrode layer; 123. a first connection portion; 124. a second connecting portion; 125. a third connecting portion; 126. a fourth connecting portion; 190. and an encapsulation layer.

Detailed Description

The present application will be described in detail below with reference to the drawings and optional embodiments, and it should be noted that, without conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

Fig. 1 is a schematic view of a first embodiment of a display panel according to the present application, and fig. 2 is a light path diagram of external light rays irradiated inside the display panel according to the first embodiment of the display panel according to the present application; as shown in fig. 1 and 2, the present application discloses a display panel 100, which comprises a substrate 110, a plurality of first anodes 120 are laid on the substrate 110 at intervals, a pixel definition layer 130 is arranged between two adjacent first anodes 120, a light emitting layer 140 is arranged on the first anodes 120, and a cathode layer 150 is laid on the light emitting layer 140 and the pixel definition layer 130; the cathode layer 150 is provided with an encapsulation layer 190, and the encapsulation layer 190 is provided with a shading layer 111 at a position corresponding to the pixel definition layer 130; an optical thinning film layer 160, an electrochromic layer 170 and a reflecting layer 180 are arranged in the pixel defining layer 130, the reflecting layer 180 and the electrochromic layer 170 are positioned on one side of the pixel defining layer 130 far away from the cathode layer 150, and the electrochromic layer 170 is arranged on the reflecting layer 180 in a stacked manner; the light-thinning film layer 160 is located on one side of the pixel defining layer 130 near the cathode layer 150; the electrochromic layer 170 is in a black state when the display panel 100 is in the first mode, and is switched from a black state to a transparent state when the display panel 100 is in the second mode.

The effect of reducing the reflection of the display panel 100 when the display panel 100 is in the first mode or keeping the display brightness of the display panel 100 unchanged when the display panel 100 is in the second mode is achieved by the mutual matching among the light-thinning film layer 160, the electrochromic layer 170 and the reflecting layer 180; when the external light is stronger, the light enters the display panel 100, the light shielding layer 111 firstly absorbs the light right above and at two sides of the display panel, and after the light is firstly subjected to light direction adjustment through the light thinning film layer 160, the light is concentrated and emitted to the electrochromic layer 170, at this time, if the display panel 100 is in the first mode, the electrochromic layer 170 is in a black state and absorbs the external light, so that the purpose of assisting the light shielding layer 111 to absorb the external light, thereby reducing reflection and improving the display quality of the panel is achieved; if the display panel 100 is in the second mode at this time, the electrochromic layer 170 is switched to a transparent state, external light irradiates the reflective layer 180 through the electrochromic layer 170, and the light is reflected to the display area 300 through the reflective layer 180 for brightness enhancement, so as to achieve the purpose of improving the brightness and display effect of the display panel 100; namely, through the interaction among the light thinning film layer 160, the electrochromic layer 170 and the reflecting layer 180, the light shielding layer 111 can be assisted to absorb external light when the display panel 100 is in the first mode, so that the effect of improving panel display is achieved; in addition, when the display panel 100 is in the second mode, the brightness of the display panel 100 is compensated by using the external light, so that the display effect and quality of the display panel 100 in different display modes can be effectively improved.

It should be noted that, in the present application, the display panel 100 is in the first mode, that is, the display panel 100 is in the low reflection mode, and at this time, light reflected by the display panel 100 entering from the outside needs to be absorbed, and at this time, the electrochromic layer 170 is in a black state; the display panel 100 is in the second mode, which may be that the display panel 100 is in the low power consumption mode, and the normal display area 300 needs to be supplemented with light, and the electrochromic layer 170 is in a transparent state.

In fig. 2, a represents light entering the display panel from the outside, B represents light irradiated to the electrochromic layer by the light-transmitting photophobic film layer, and C represents light reflected by the reflective layer.

Further, the refractive index of the light-thinning film layer 160 in the present application is smaller than that of the pixel defining layer 130. When external light enters the display panel 100, the light shielding layer 111 firstly absorbs the light directly above and on two sides of the pixel defining layer, other light firstly irradiates the light shielding layer 160 from the pixel defining layer 130, then irradiates the pixel defining layer 130 from the light shielding layer 160, and since the refractive index of the light shielding layer 160 is smaller than that of the pixel defining layer 130, the pixel defining layer 130 is an optically dense medium, the light shielding layer 160 is an optically dense medium, when the light irradiates the electrochromic layer 170 through the pixel defining layer 130, namely, the light irradiates the optically dense medium from the optically dense medium to the optically dense medium, and after the light is subjected to light refraction adjustment between the light shielding layer 160 and the pixel defining layer 130, the light is more easily concentrated towards one side of the electrochromic layer 170; thus, when the display panel 100 is in the first mode, the electrochromic layer 170 is in a black state and is easier to absorb the external light, so as to achieve the purpose of assisting the light shielding layer 111 to absorb the external light, thereby reducing reflection and improving the display quality of the panel; when the display panel 100 is in the second mode, external light is easier to irradiate onto the reflective layer 180 through the electrochromic layer 170 in the transparent state, and the light is reflected to the display area 300 through the reflective layer 180 for brightness enhancement, so as to achieve the purpose of improving the brightness and display effect of the display panel 100; thus, the display effect and quality of the display panel 100 in different display modes can be effectively improved.

In order to control the electrochromic layer 170 to be in a black state when the display panel 100 is in the first mode and absorb light, and to be in a transparent state when the display panel 100 is in the second mode, the electrochromic layer 170 is controlled by transmitting light to the reflective layer 180, which is specifically as follows:

a driving electrode layer 122 is further disposed between the substrate 110 and the pixel defining layer 130 and between the pixel defining layer 130 and the plurality of first anodes 120, a second anode 121 is further disposed in the pixel defining layer 130, and the electrochromic layer 170 is connected to the driving electrode layer 122 through the second anode 121; the second anode 121 controls the voltage of the electrochromic layer 170 to reach a first preset voltage, and the electrochromic layer 170 is switched between a black state and a transparent state.

The driving electrode layer 122 is utilized to be connected with the second anode 121, the driving electrode layer 122 is utilized to provide an electric signal for the second anode 121, and the second anode 121 is connected with the electrochromic layer 170, so that the electric signal of the second anode 121 can be transmitted to the electrochromic layer 170, the voltage of the electrochromic layer 170 is changed, and the electrochromic layer 170 is switched between a black state and a transparent state.

When the display panel 100 is in the first mode, the second anode 121 does not apply a voltage to the electrochromic layer 170, so that the electrochromic layer 170 absorbs external light in a black state, and the purpose of assisting the light shielding layer 111 to absorb external light to reduce reflection and improve display quality of the display panel 100 is achieved; when the display panel 100 is in the second mode, the driving electrode layer 122 provides an electrical signal to the second anode 121, after the second anode 121 obtains the electrical signal, a voltage is applied to the electrochromic layer 170, and when the voltage obtained by the electrochromic layer 170 reaches the first preset voltage, the electrochromic layer 170 is switched from the black state to the transparent state, at this time, external light can be irradiated onto the reflecting layer 180 through the electrochromic layer 170, and the light is reflected to the display area 300 through the reflecting layer 180 to be brightened, so that the brightness and the display effect of the display panel 100 are improved.

Wherein the first preset voltage mentioned in the present application ranges between 1v and 1.5 v. In this way, the electrochromic layer 170 is controlled in different modes of the display panel 100 under the condition of effectively controlling the overall power consumption of the display panel 100, which is helpful for improving the display quality of the display panel 100 in different modes under the condition of reducing the power consumption of the display panel 100.

Further, in order to make the light-thinning film layer 160 more light-transmitting outside light, the position set up by the light-thinning film layer 160 is designed, specifically as follows:

the light-thinning film layer 160 is disposed in the same layer as the cathode layer 150 on the light-emitting layer 140, and the reflective layer 180 and the electrochromic layer 170 are disposed in the same layer as the first anode 120. Because the light-thinning film layer 160 is disposed in the pixel defining layer 130, due to the limitation of the structure of the pixel defining layer 130, if the position of the light-thinning film layer 160 disposed in the pixel defining layer 130 is higher than the cathode layer 150 above the light-emitting layer 140, the area of the light-thinning film layer 160 will be smaller, the light quantity of the external light passing through the light-thinning film layer 160 will be reduced, and the absorption or light transmission of the external light by the electrochromic layer 170 will be directly affected, so that the light supplementing effect will be poor; if the position of the light-shielding layer 160 in the pixel defining layer 130 is lower than the cathode layer 150 above the light-emitting layer 140, the edge of the light-shielding layer 160 is easily blocked by the light-emitting layer 140 near the edge of the pixel defining layer 130, so that some external light cannot irradiate onto the light-shielding layer 160, and the light quantity of the external light transmitted through the light-shielding layer 160 is affected.

The reflective layer 180 and the electrochromic layer 170 are disposed on the same layer as the first anode 120, so that the reflective layer 180 and the electrochromic layer 170 can be located at the bottom of the pixel defining layer 130, and when the display panel 100 is in the first mode, the electrochromic layer 170 is in a black state, and can absorb light from the outside through the light-thinning layer 160, and at the same time, can also absorb part of the oblique-view angle light reflected by the first anode 120, thereby being beneficial to further reducing the reflection of the display panel 100; when the display panel 100 is in the second mode, the electrochromic layer 170 is in a transparent state, light can be irradiated onto the reflective layer 180 through the electrochromic layer 170, the reflective layer 180 reflects the light back to the display area 300 to compensate for the brightness of the display area 300, and meanwhile, the reflected light of the first anode 120 with the oblique viewing angle can be reflected back to the display area 300 through the reflective layer 180 again, so that the display brightness of the display panel 100 in the second mode is further improved, and the display quality of the display panel 100 in different modes is further improved.

Of course, not only the positions of the light-shielding layer 160, the reflective layer 180 and the electrochromic layer 170 are important for the treatment of the external light, but also the shape and structure of the light-shielding layer 160, the reflective layer 180 and the electrochromic layer 170 are important for the treatment of the external light.

Further, the sides of the light-thinning film layer 160, the reflecting layer 180 and the electrochromic layer 170 are in a folded line shape or a linear shape, and the reflecting layer 180 and the electrochromic layer 170 have the same shape; the orthographic projection area of the light shielding layer 111 on the substrate 110 is larger than or equal to the orthographic projection area of the light thinning film layer 160 on the substrate 110; the orthographic projection area of the light-thinning film layer 160 on the substrate 110 is larger than or equal to the orthographic projection area of the electrochromic layer 170 on the substrate 110; the orthographic projected area of electrochromic layer 170 on substrate 110 is greater than or equal to the orthographic projected area of reflective layer 180 on substrate 110.

For example, the light shielding layer 111, the light shielding layer 160, the electrochromic layer 170 and the reflective layer 180 are all linear, i.e. have a planar structure, so that the light shielding layer 160, the electrochromic layer 170 and the reflective layer 180 can have a sufficient area and a sufficient light treatment range; when external light irradiates into the display panel 100, the light shielding layer 111 firstly effectively absorbs the external light, then the light-shielding layer 160 can ensure that most of the light transmitted through the light shielding layer 111 can enter the light-shielding layer 160, and after the light-shielding layer 160 is processed, the light irradiates the electrochromic layer 170, and when the display panel 100 is in the first mode, the electrochromic layer 170 can absorb the light better, so that the reflection of the display panel 100 is reduced; when the display panel 100 is in the second mode, the electrochromic layer 170 can transmit light, irradiate the light to the reflective layer 180, and reflect the light to the display area 300 by using the reflective layer 180, so as to increase the brightness of the display area 300, thereby further improving the display quality of the display panel 100 in different modes.

FIG. 3 is a schematic view of a second embodiment of a display panel according to the present application, and FIG. 4 is a light path diagram of external light rays irradiated inside the display panel according to the second embodiment of the display panel according to the present application; as shown in fig. 3 and 4, the embodiment shown in fig. 3 is based on the improvement of fig. 1, the light-thinning film layer 160 is linear, the electrochromic layer 170 and the reflective layer 180 are both broken lines, the electrochromic layer 170 and the reflective layer 180 each include a first connection portion 123 and a second connection portion 124, one end of the first connection portion 123 is connected with one end of the second connection portion 124, and an included angle α between the first connection portion 123 and the second connection portion 124 is greater than 135 ° and smaller than 180 °.

The difference between this embodiment and the previous embodiment is that this embodiment is improved with respect to the structures of the light-thinning film layer 160, the electrochromic layer 170 and the reflective layer 180 in this embodiment are both in a fold line structure, and the inclined surfaces of the electrochromic layer 170 and the reflective layer 180 face the display area 300.

In fig. 4, a represents light entering the display panel from the outside, B represents light irradiated to the electrochromic layer by the light-transmitting photophobic film layer, and C represents light reflected by the reflective layer.

When external light irradiates into the display panel 100, the light shielding layer 111 firstly absorbs the light, and a part of the light passes through the light shielding layer 111 and irradiates onto the light-shielding layer 160, the light-shielding layer 160 intensively irradiates onto the electrochromic layer 170, and at this time, if the display panel 100 is in the first mode, the electrochromic layer 170 is in a black state, and absorbs the light, so that the reflection phenomenon of the display panel 100 is effectively reduced; if the display panel 100 is in the second mode, the electrochromic layer 170 is in a transparent state, and irradiates the transparent light onto the reflective layer 180, and the included angle α between the first connection portion 123 and the second connection portion 124 in the reflective layer 180 and the electrochromic layer 170 is greater than 135 ° and less than 180 °, so that the reflective surface of the reflective layer 180 and the inclined surface of the electrochromic layer 170 face the light-emitting layer 140 of the display area 300, and the reflective layer 180 can reflect most of the received light to the display area 300, thereby supplementing the brightness of the display area 300 and further improving the display quality of the display panel 100.

FIG. 5 is a schematic view of a third embodiment of a display panel according to the present application, and FIG. 6 is a light path diagram of external light rays irradiated inside the display panel according to the third embodiment of the display panel according to the present application; as shown in fig. 5 and 6, the embodiment shown in fig. 5 is based on the improvement of fig. 3, where the light-thinning film layer 160 is a fold line type, the electrochromic layer 170 and the reflective layer 180 are both linear, the light-thinning film layer 160 includes a first connection portion 123 and a second connection portion 124, one end of the first connection portion 123 is connected with one end of the second connection portion 124, and an included angle α between the first connection portion 123 and the second connection portion 124 is greater than 135 ° and smaller than 180 °.

In fig. 6, a represents light entering the display panel from the outside, B represents light irradiated to the electrochromic layer by the light-transmitting photophobic film layer, and C represents light reflected by the reflective layer.

The difference between this embodiment and the previous embodiment is that, since the light enters the display panel 100 and irradiates the pixel definition layer 130 from the package layer 190, irradiates the light onto the light-thinned layer 160 from the pixel definition layer 130, and irradiates the light onto the electrochromic layer 170 from the light-thinned layer 160 through the pixel definition layer 130, that is, irradiates the light onto the light-thinned medium from the light-dense medium, irradiates the light into the light-dense medium, the light-thinned layer 160 is designed into a folded line shape, and the included angle α between the first connection portion 123 and the second connection portion 124 of the light-thinned layer 160 is ensured to be greater than 135 ° and less than 180 °, so that the inclined surface of the light-thinned layer 160 is inclined inwards towards the electrochromic layer 170, and after the light irradiates the light-thinned layer 160, the light is refracted towards the electrochromic layer 170 more easily through the light-thinned layer 160, and then the light refracted by the light-thinned layer 160 is irradiated onto the electrochromic layer 170 more easily in the first mode, so that the light-thinned layer 160 is absorbed by the light-thinned layer 170 more easily, and the light-thinned layer 170 is absorbed by the light-thinned layer 160 is more easily in the second mode, and the light-shielded layer 170 is absorbed by the outside, thereby the light-shielding panel is reduced, and the light-absorbing quality is improved; when the display panel 100 is in the second mode, more external light can be irradiated onto the reflecting layer 180 through the electrochromic layer 170 in the transparent state, and the light is reflected to the display area 300 through the reflecting layer 180 for brightness enhancement, so that the brightness and the display effect of the display panel 100 are improved; thus, the display effect and quality of the display panel 100 in different display modes can be effectively improved.

FIG. 7 is a schematic view of a fourth embodiment of a display panel according to the present application, and FIG. 8 is a light path diagram of external light rays irradiated inside the display panel according to the fourth embodiment of the display panel according to the present application; as shown in fig. 7 and 8, the embodiment shown in fig. 7 is based on the modification of fig. 5, where the light-thinning film layer 160, the electrochromic layer 170 and the reflective layer 180 are all broken lines, the light-thinning film layer 160 includes a first connection portion 123 and a second connection portion 124, one end of the first connection portion 123 is connected with one end of the second connection portion 124, and an included angle α between the first connection portion 123 and the second connection portion 124 is greater than 135 ° and smaller than 180 °; the electrochromic layer 170 and the reflective layer 180 each include a third connection portion 125 and a fourth connection portion 126, one end of the third connection portion 125 is connected with one end of the fourth connection portion 126, and an included angle β between the third connection portion 125 and the fourth connection portion 126 is greater than 135 ° and less than 180 °; the included angle between the first connection portion 123 and the second connection portion 124 is opposite to the included angle between the third connection portion 125 and the fourth connection portion 126.

In fig. 8, a represents light entering the display panel from the outside, B represents light irradiated to the electrochromic layer by the light-transmitting photophobic film layer, and C represents light reflected by the reflective layer.

In this embodiment, the light-shielding film layer 160, the electrochromic layer 170 and the reflective layer 180 are all of a fold line structure, and the included angles between the first connection portion 123 and the second connection portion 124 of the light-shielding film layer 160 and between the third connection portion 125 and the fourth connection portion 126 of the electrochromic layer 170 and the reflective layer 180 are all greater than 135 ° and less than 180 °; the inclined surface of the light-thinning film layer 160 is inclined inwards towards the electrochromic layer 170, so that when light irradiates the light-thinning film layer 160, the light is more easily concentrated towards the electrochromic layer 170 and the reflecting layer 180, and more light is easily absorbed by the electrochromic layer 170 or transmitted to the reflecting layer 180 for reflection; the inclined surfaces of the electrochromic layer 170 and the reflective layer 180 are inclined towards the display area 300, so that the light reflected by the reflective layer 180 is easier to be injected into the display area 300, and the brightness of the display area 300 is complemented when the display panel 100 is in the second mode, so as to improve the display quality of the display panel 100.

Fig. 9 is a schematic diagram of an embodiment of a display device according to the present application, and as shown in fig. 9, the present application further discloses a display device 10, including a housing 200, where the display device 10 further includes the display panel 100 described above, and the display panel 100 is disposed in the housing 200. The casing 200 is used for protecting the display panel 100 from being damaged by external force during the carrying process, and simultaneously preventing external water vapor from invading the display panel 100, thereby corroding electrical components in the display panel 100 and effectively prolonging the service life of the display device 10.

It should be noted that, the display device 10 of the present application is mainly directed to the display device 10 of the OLED display panel 100, and may be a mobile phone, a computer, a tablet, etc., and the present application does not specifically limit the type of the device of the display device 10.

In the OLED display device 10, in order to improve the reflection phenomenon and the high power consumption problem, a low power consumption display mode and a low reflection display mode are designed, in which the low reflection mode only relies on the light shielding layer 111 to absorb light, so as to reduce the poor reflection effect, and the display panel 100 in the low power consumption mode has low brightness, which affects the user experience.

Based on the above-mentioned problems, the present application improves the display panel 100 in the display device 10, and by providing the light-thinning film layer 160, the electrochromic layer 170 and the reflective layer 180 in the display panel 100, the present application achieves the effect of reducing the reflection of the display panel 100 when the display panel 100 is in the first mode or maintaining the display brightness of the display panel 100 unchanged when the display panel 100 is in the second mode by using the interaction among the light-thinning film layer 160, the electrochromic layer 170 and the reflective layer 180; when the external light is stronger, the light enters the display panel 100, the light shielding layer 111 firstly absorbs the light right above and at two sides of the display panel, and after the light is firstly subjected to light direction adjustment through the light thinning film layer 160, the light is concentrated and emitted to the electrochromic layer 170, at this time, if the display panel 100 is in the first mode, the electrochromic layer 170 is in a black state and absorbs the external light, so that the purpose of assisting the light shielding layer 111 to absorb the external light, thereby reducing reflection and improving the display quality of the panel is achieved; if the display panel 100 is in the second mode at this time, the electrochromic layer 170 is switched to a transparent state, external light irradiates the reflective layer 180 through the electrochromic layer 170, and the light is reflected to the display area 300 through the reflective layer 180 for brightness enhancement, so as to achieve the purpose of improving the brightness and display effect of the display panel 100; namely, through the interaction among the light thinning film layer 160, the electrochromic layer 170 and the reflecting layer 180, the light shielding layer 111 can be assisted to absorb external light when the display panel 100 is in the first mode, so that the effect of improving panel display is achieved; in addition, when the display panel 100 is in the second mode, the brightness of the display panel 100 is compensated by using the external light, so that the display effect and quality of the display panel 100 in different display modes can be effectively improved, and the quality of the display device 10 can be further improved.

It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.

The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.

Claims

1. The display panel comprises a substrate, wherein a plurality of first anodes are paved on the substrate at intervals, a pixel definition layer is arranged between two adjacent first anodes, a light-emitting layer is arranged on the first anodes, and cathode layers are paved on the light-emitting layer and the pixel definition layer; the cathode layer is provided with an encapsulation layer, and a light shielding layer is arranged at the position of the encapsulation layer corresponding to the pixel definition layer;

the pixel definition layer is characterized in that an optical thinning film layer, an electrochromic layer and a reflecting layer are arranged in the pixel definition layer, the reflecting layer and the electrochromic layer are positioned on one side of the pixel definition layer far away from the cathode layer, and the electrochromic layer is arranged on the reflecting layer in a lamination mode; the light thinning film layer is positioned on one side of the pixel definition layer, which is close to the cathode layer;

the electrochromic layer is in a black state when the display panel is in a first mode, and is switched from the black state to a transparent state when the display panel is in a second mode.

2. The display panel of claim 1, wherein the light-thinned film layer has a refractive index less than a refractive index of the pixel defining layer.

3. The display panel according to claim 2, wherein a driving electrode layer is further provided between the substrate base plate and the pixel defining layer and the plurality of first anodes, a second anode is further provided in the pixel defining layer, and the electrochromic layer is connected to the driving electrode layer through the second anode; and when the voltage of the electrochromic layer controlled by the second anode reaches a first preset voltage, the electrochromic layer is switched between a black state and a transparent state.

4. A display panel as claimed in claim 3, characterized in that the first preset voltage ranges between 1v and 1.5 v.

5. The display panel of claim 4, wherein the light-thinning film layer is co-layer with a cathode layer on the light-emitting layer, and the reflective layer and the electrochromic layer are co-layer with the first anode.

6. The display panel according to any one of claims 1 to 5, wherein the sides of the light-thinning film layer, the reflecting layer and the electrochromic layer are of a folded line type or a linear type, and the reflecting layer and the electrochromic layer have the same shape;

the orthographic projection area of the shading layer on the substrate is larger than or equal to the orthographic projection area of the photophobic film layer on the substrate; the orthographic projection area of the photophobic film layer on the substrate is larger than or equal to the orthographic projection area of the electrochromic layer on the substrate; the orthographic projection area of the electrochromic layer on the substrate is larger than or equal to the orthographic projection area of the reflecting layer on the substrate.

7. The display panel of claim 6, wherein the light-thinning film layer is linear, the electrochromic layer and the reflective layer are both broken lines, the electrochromic layer and the reflective layer each comprise a first connection portion and a second connection portion, one end of the first connection portion is connected with one end of the second connection portion, and an included angle between the first connection portion and the second connection portion is greater than 135 ° and smaller than 180 °.

8. The display panel of claim 6, wherein the light-thinning film layer is a fold line type, the electrochromic layer and the reflective layer are both linear type, the light-thinning film layer comprises a first connecting portion and a second connecting portion, one end of the first connecting portion is connected with one end of the second connecting portion, and an included angle between the first connecting portion and the second connecting portion is greater than 135 ° and smaller than 180 °.

9. The display panel of claim 6, wherein the light-thinning film layer, the electrochromic layer and the reflective layer are all broken lines, the light-thinning film layer comprises a first connecting portion and a second connecting portion, one end of the first connecting portion is connected with one end of the second connecting portion, and an included angle between the first connecting portion and the second connecting portion is larger than 135 degrees and smaller than 180 degrees;

the electrochromic layer and the reflecting layer comprise a third connecting part and a fourth connecting part, one end of the third connecting part is connected with one end of the fourth connecting part, and the included angle between the third connecting part and the fourth connecting part is larger than 135 degrees and smaller than 180 degrees;

the included angle between the first connecting part and the second connecting part is opposite to the included angle between the third connecting part and the fourth connecting part.

10. A display device comprising a housing, characterized in that the display device further comprises a display panel according to any one of claims 1 to 9, the display panel being arranged in the housing.