CN117742047A - Display panel and display device - Google Patents

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a substrate, a first electrochromic layer, a second electrochromic layer and a reflecting layer are arranged in a pixel definition layer corresponding to the lower part of a shading layer in a peep-proof area, and the reflecting layer is positioned between the first electrochromic layer and the second electrochromic layer; a part of the first electrochromic layer and the second electrochromic layer are positioned in the pixel defining layer, and the other part extends towards the direction of the shading layer; when the display panel is in a first peep-proof mode, the first electrochromic layer and the second electrochromic layer are in black states; when the display panel is in the second peep-proof mode, the first electrochromic layer and the second electrochromic layer are switched from black states to transparent states; when the display panel is in the third peep-proof mode, the first electrochromic layer or the second electrochromic layer is in a transparent state, and the peep-proof brightness of the display panel in different peep-proof modes is improved through the mode, so that the display quality of the display panel is 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 wider and wider application of display devices, such as mobile phones and computers, people pay more attention to the privacy of the use of the display devices, and in some cases, users want information displayed in the display devices not to be known by other surrounding users, so that more and more display devices have peep-proof functions.

At present, in order to meet different peep-proof requirements of people, a display device with a peep-proof function is often designed to be capable of being switched between a single-color peep-proof mode and a double-color peep-proof mode, and when a user does not need a strong peep-proof effect, the display device can be switched to the single-color peep-proof mode, and at the moment, the peep-proof brightness is required to be controlled relatively low; when a user needs a stronger peep-proof effect, the peep-proof device can be switched to a double-color peep-proof mode, and stronger peep-proof brightness is needed at the moment; the brightness of the current display panel in the two modes cannot be controlled well, so that the brightness is higher in the single-color peep-proof mode, and the brightness is lower in the double-color peep-proof mode, and the display effect is affected.

Therefore, how to control the peep-proof brightness of the display panel in different peep-proof modes, so as to improve the display quality of the display panel, is a problem to be solved in the art.

Disclosure of Invention

The application discloses display panel and display device, purpose are promoting the peep-proof effect of display panel under different peep-proof modes to improve display panel's display quality.

The application also discloses a display panel which is divided into a peep-proof area and a display area, wherein the display area is adjacent to the peep-proof area; the display panel comprises a substrate, a plurality of anodes are paved on the substrate at intervals, a pixel definition layer is arranged between two adjacent anodes, cathode layers are paved on the anodes and the pixel definition layer, and a packaging layer is arranged on the cathode layers; a shading layer is arranged in the packaging layer in the peep-proof area, a first electrochromic layer, a second electrochromic layer and a reflecting layer are arranged in the pixel definition layer corresponding to the lower part of the shading layer, and the reflecting layer is positioned between the first electrochromic layer and the second electrochromic layer; a part of the first electrochromic layer and a part of the second electrochromic layer are positioned in the pixel definition layer, are connected with the bottom of the pixel definition layer, and extend towards the direction of the light shielding layer and are abutted against the light shielding layer; when the display panel is in a first peep-proof mode, the first electrochromic layer and the second electrochromic layer are in black states; when the display panel is in a second peep-proof mode, the first electrochromic layer and the second electrochromic layer are switched from black states to transparent states; when the display panel is in the third peep-proof mode, the first electrochromic layer or the second electrochromic layer is in a transparent state.

Optionally, a driving electrode layer is further disposed between the substrate and the pixel defining layer, the anode includes a first anode, a second anode and a third anode, the first anode is located between two pixel defining layers in the peep-proof area, and the second anode and the third anode are both located in the pixel defining layer and connected with the driving electrode layer; the second anode is positioned on one side of the first electrochromic layer far away from the reflecting layer, and when the voltage of the first electrochromic layer reaches a first preset voltage, the first electrochromic layer is switched from a black state to a transparent state; the third anode is positioned on one side of the second electrochromic layer far away from the reflecting layer, and when the voltage of the second electrochromic layer reaches a first preset voltage, the second electrochromic layer is switched from a black state to a transparent state.

Optionally, a first electrode layer is disposed between the first electrochromic layer and the reflective layer, the first electrode layer is connected with the second anode, and the second anode controls the voltage of the first electrochromic layer to reach a first preset voltage through the first electrode layer; a second electrode layer is arranged between the second electrochromic layer and the reflecting layer, the second electrode layer is connected with the third anode, and the third anode controls the voltage of the second electrochromic layer to reach a first preset voltage through the second electrode layer.

Optionally, the first preset voltage ranges from 0.9v to 1.2 v.

Optionally, the structure of the reflective layer is polygonal or linear.

Optionally, the reflective layer is linear, and an extension direction of the reflective layer is the same as an extension direction of the first electrochromic layer and the second electrochromic layer, and the lengths of the reflective layer and the first electrochromic layer are the same.

Optionally, the reflecting layer has a triangular structure, and the reflecting layer includes a first surface and a second surface, and an included angle between the first surface and the second surface ranges from 30 ° to 75 °; and the included angle between the first surface and the second surface faces the bottom of the pixel definition layer.

Optionally, the height of the reflective layer between the first electrochromic layer and the second electrochromic layer is greater than half the height of the pixel defining layer and less than or equal to half the distance between the pixel defining layer and the light shielding layer.

Optionally, an insulating layer is further disposed between the first electrochromic layer and the second electrochromic layer, an extending direction of the insulating layer is the same as an extending direction of the first electrochromic layer and the second electrochromic layer, and the insulating layer passes through a middle part of the reflecting layer and is respectively abutted to bottoms of the shading layer and the pixel defining layer; the insulating layer is made of transparent materials.

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

According to the anti-peeping display panel, the electrochromic layer and the reflecting layer are arranged between the pixel definition layer and the shading layer in the anti-peeping area, wherein the electrochromic layer is divided into the first electrochromic layer and the second electrochromic layer, the reflecting layer is positioned between the first electrochromic layer and the second electrochromic layer, when the display panel is in a first anti-peeping mode, the first electrochromic layer and the second electrochromic layer are in a black state, light rays emitted to the electrochromic layer by the anti-peeping sub-pixels in the anti-peeping area are absorbed, and the light rays are blocked from entering the anti-peeping area so as to reduce the brightness in the anti-peeping area, and therefore the anti-peeping intensity of the whole display panel can be effectively reduced; when the display panel is in the second peep-proof mode, the first electrochromic layer and the second electrochromic layer are in transparent states, light rays emitted by the peep-proof sub-pixels pass through the first electrochromic layer and the second electrochromic layer and irradiate the reflecting layer to be reflected, the reflecting layer reflects the light rays into the adjacent peep-proof areas, and the light rays in the peep-proof areas are compensated to improve the peep-proof brightness of the peep-proof areas in a large visual angle, so that the peep-proof effect of the display panel is improved; when the display panel is in the third peep-proof mode, the electrochromic layer on one side of the peep-proof effect to be improved can be in a transparent state in a targeted manner, light on one side of the peep-proof effect to be improved is irradiated onto the reflecting layer through the electrochromic layer, and the reflecting layer reflects the light to the large visual angle range of the peep-proof area to be brightened, so that the function of enhancing the peep-proof brightness on one side or two sides can be achieved; according to the display panel, the electrochromic layer and the reflecting layer are matched with each other, so that the peep-proof brightness of the two-side large viewing angles can be compensated, the brightness compensation of the single or two-side large viewing angles can be controlled, the purpose of regulating and controlling the peep-proof brightness of the display panel in different peep-proof modes is achieved, and the purpose of improving the display quality of the display panel is achieved.

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 a first embodiment of a display panel according to the present application, in which light is irradiated in a peep-proof area;

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 a third embodiment of a display panel of the present application;

FIG. 5 is a schematic view of light shining in the privacy zone and the display zone in a third embodiment of the display panel of the present application;

fig. 6 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; 110. a display area; 120. a peep-proof area; 130. a substrate base; 140. an anode; 141. a first anode; 142. a second anode; 143. a third anode; 150. a pixel definition layer; 160. a cathode layer; 170. an encapsulation layer; 171. a light shielding layer; 172. a first electrochromic layer; 173. a second electrochromic layer; 174. a reflective layer; 175. a first face; 176. a second face; 180. an insulating layer; 181. a first electrode layer; 182. a second electrode layer; 183. and driving the electrode 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 light irradiated in a peep-proof area in the first embodiment of the display panel according to the present application; as shown in fig. 1 and 2, the present application further discloses a display panel 100, which is divided into a peep-proof area 120 and a display area 110, wherein the display area 110 is adjacent to the peep-proof area 120; the display panel 100 includes a substrate 130, a plurality of anodes 140 are disposed on the substrate 130 at intervals, a pixel defining layer 150 is disposed between two adjacent anodes 140, a cathode layer 160 is disposed on the anodes 140 and the pixel defining layer 150, and an encapsulation layer 170 is disposed on the cathode layer 160; in the peep-proof region 120, a light shielding layer 171 is disposed in the encapsulation layer 170, a first electrochromic layer 172, a second electrochromic layer 173 and a reflective layer 174 are disposed in the pixel definition layer 150 corresponding to the light shielding layer 171, and the reflective layer 174 is located between the first electrochromic layer 172 and the second electrochromic layer 173; a part of the first electrochromic layer 172 and the second electrochromic layer 173 are positioned in the pixel defining layer 150, connected to the bottom of the pixel defining layer 150, and the other part extends toward the light shielding layer 171 and abuts against the light shielding layer 171; when the display panel 100 is in the first peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are both in a black state; when the display panel 100 is in the second peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are both switched from the black state to the transparent state; when the display panel 100 is in the third peep-proof mode, the first electrochromic layer 172 or the second electrochromic layer 173 is transparent.

In fig. 2, a indicates that the light emitting layer in the peep-proof area irradiates light to the peep-proof area, and B indicates that the light emitting layer in the peep-proof area irradiates light to the reflective layer; c represents the light emitted from the light-emitting layer of the peep-proof region to the display region.

According to the display panel 100, the electrochromic layer and the reflecting layer 174 are arranged between the pixel defining layer 150 and the shading layer 171 in the peep-proof area 120, wherein the electrochromic layer is divided into the first electrochromic layer 172 and the second electrochromic layer 173, the reflecting layer 174 is positioned between the first electrochromic layer 172 and the second electrochromic layer 173, when the display panel 100 is in the first peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are in a black state, light rays emitted to the electrochromic layer by peep-proof sub-pixels in the peep-proof area 120 are absorbed, and the light rays are blocked from entering the peep-proof area 120 so as to reduce the brightness in the peep-proof area 120, and thus the peep-proof intensity of the whole display panel 100 can be effectively reduced; when the display panel 100 is in the second peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are both in a transparent state, and the light emitted by the peep-proof sub-pixel passes through the first electrochromic layer 172 and the second electrochromic layer 173 and irradiates the reflecting layer 174 to be reflected, the reflecting layer 174 reflects the light into the adjacent peep-proof area 120, and compensates the light in the peep-proof area 120 so as to improve the peep-proof brightness of the peep-proof area 120 in a large viewing angle, thereby improving the peep-proof effect of the display panel 100; when the display panel 100 is in the third peep-proof mode, the electrochromic layer on one side of the peep-proof effect to be improved can be in a transparent state in a targeted manner, the light on one side of the peep-proof effect to be improved is irradiated onto the reflecting layer 174 through the electrochromic layer, and the large visual angle range of the peep-proof area 120 reflected by the reflecting layer 174 is brightened, so that the function of enhancing the peep-proof brightness of the adjustable single or double sides is achieved; according to the display panel, through the mutual matching between the electrochromic layer and the reflecting layer 174, the peeping-proof brightness of the double-side large viewing angles can be compensated, the brightness compensation of the single or double-side large viewing angles can be controlled, the purpose of regulating and controlling the peeping-proof brightness of the display panel 100 in different peeping-proof modes is achieved, and the purpose of improving the display quality of the display panel 100 is achieved.

It should be noted that, the display panel 100 in the first peep-proof mode mentioned in the present application may be understood as a mode when the display panel 100 is in a low peep-proof effect, so as to realize a relatively weak peep-proof effect, and light reflected by the display panel 100 needs to be absorbed, and at this time, the first electrochromic layer 172 and the second electrochromic layer 173 are both in a black state; the display panel 100 is in the second peep-proof mode, which can be understood as a mode when the display panel 100 is in a high peep-proof effect, so as to realize a relatively strong peep-proof effect, and the peep-proof area 120 needs to be reflected into the peep-proof area 120 to supplement light to improve the brightness of the peep-proof area 120, and at this time, the first electrochromic layer 172 and the second electrochromic layer 173 are both in a transparent state; the display panel 100 is in the third peep-proof mode, which can be understood that the display panel 100 is in the single-side or double-side adjustable peep-proof mode, at this time, the peep-proof effect of one side of the display panel 100 can be controlled to be improved, at this time, the electrochromic layer on the lifted side is in a transparent state, and the electrochromic layer on the other side is in a black state.

In addition, in order to simultaneously control or separately control the first electrochromic layer 172 and the second electrochromic layer 173 to switch between the black state and the transparent state, the display panel 100 can better regulate and control light under different peep-proof modes; the present application is also designed for control of electrochromic layers, specifically as follows:

a driving electrode layer 183 is further arranged between the substrate 130 and the pixel defining layer 150, the anode 140 comprises a first anode 141, a second anode 142 and a third anode 143, the first anode 141 is positioned between the two pixel defining layers 150 in the peep-proof area 120, and the second anode 142 and the third anode 143 are positioned in the pixel defining layer 150 and connected with the driving electrode layer 183; the second anode 142 is located at a side of the first electrochromic layer 172 away from the reflective layer 174, and when the second anode 142 controls the voltage of the first electrochromic layer 172 to reach a first preset voltage, the first electrochromic layer 172 is switched from a black state to a transparent state; the third anode 143 is located at a side of the second electrochromic layer 173 away from the reflective layer 174, and when the third anode 143 controls the voltage of the second electrochromic layer 173 to reach the first preset voltage, the second electrochromic layer 173 is switched from the black state to the transparent state.

In the present application, the first anode 141 is an anode 140 structure in the peep-proof sub-pixel in the peep-proof area 120; the second anode 142 and the third anode 143 are anode 140 structures for controlling the first electrochromic layer 172 and the second electrochromic layer 173, respectively; the driving electrode layer 183 is connected with the second anode 142, an electric signal is provided for the second anode 142 by the driving electrode layer 183, and the second anode 142 is connected with the first electrochromic layer 172, so that the electric signal of the second anode 142 can be transmitted to the first electrochromic layer 172, the voltage of the first electrochromic layer 172 reaches a first preset voltage, and the first electrochromic layer 172 is switched from a black state to a transparent state; and the third anode 143 is connected with the driving electrode layer 183, the driving electrode layer 183 provides an electrical signal for the third anode 143, and the third anode 143 is connected with the second electrochromic layer 173, so that the electrical signal of the third anode 143 can be transmitted to the second electrochromic layer 173, and the voltage of the second electrochromic layer 173 reaches the first preset voltage, so that the second electrochromic layer 173 is switched from the black state to the transparent state; in this way, the second anode 142 and the third anode 143 respectively control the first electrochromic layer 172 and the second electrochromic layer 173, so that the purposes that the light rays can be well regulated and controlled in different peep-proof modes of the display panel 100 and the peep-proof effect of the display panel 100 in different peep-proof modes is improved are achieved.

The first preset voltage in this application ranges between 0.9v and 1.2 v. In this way, under the condition that the overall power consumption of the display panel 100 can be effectively controlled, the first electrochromic layer 172 and the second electrochromic layer 173 are controlled in different peep-proof modes of the display panel 100, so that the display quality of the display panel 100 in different peep-proof modes is improved under the condition that the power consumption of the display panel 100 is reduced.

Further, the reflective layer 174 in the present application has a polygonal or linear structure. For example, the reflection layer 174 may have a planar structure, or a trapezoid structure, a triangle structure, etc., so that the reflection layer 174 has a larger reflection area when the reflection layer 174 has a planar structure, and the reflection layer 174 may receive most of the light irradiated onto the reflection layer 174 and reflect the light, thereby improving the peep-proof brightness of the display panel 100 in different peep-proof modes; when the reflective layer 174 has a polygonal structure, the reflective directions of the light can be adjusted by using the multiple surfaces formed by the reflective layer 174, so that the light is reflected to the display area 110 or the peep-proof area 120, so as to perform brightness compensation on the display area 110 or the peep-proof area 120 according to actual needs.

Specifically, the reflective layer 174 is linear, and the reflective layer 174 has the same extension direction and length as the first electrochromic layer 172 and the second electrochromic layer 173. In this way, the reflection area of the reflection layer 174 can be maximized, and the reflection layer 174 can reflect more light back to the peep-proof area 120, so as to compensate the brightness of the peep-proof area 120.

Further, since the second anode 142 and the third anode 143 are adopted to respectively supply the electric signals to the first electrochromic layer 172 and the second electrochromic layer 173, in order to improve the stability and uniformity of the voltages applied by the second anode 142 and the third anode 143 to the first electrochromic layer 172 and the second electrochromic layer 173 respectively, and to enable the first electrochromic layer 172 and the second electrochromic layer 173 to be uniformly changed from a black state to a transparent state, the connection between the second anode 142 and the third anode 143 and the first electrochromic layer 172 and the second electrochromic layer 173 respectively is designed:

FIG. 3 is a schematic diagram of a second embodiment of a display panel of the present application; as shown in fig. 3, the embodiment shown in fig. 3 is based on the modification of fig. 1, a first electrode layer 181 is disposed between the first electrochromic layer 172 and the reflective layer 174, the first electrode layer 181 is connected to the second anode 142, and the second anode 142 controls the voltage of the first electrochromic layer 172 to reach a first preset voltage through the first electrode layer 181; a second electrode layer 182 is disposed between the second electrochromic layer 173 and the reflective layer 174, the second electrode layer 182 is connected to the third anode 143, and the third anode 143 controls the voltage of the second electrochromic layer 173 to reach a first preset voltage through the second electrode layer 182.

Note that, in this application, the first electrode layer 181 and the second electrode layer 182 may be made of transparent ITO (indium tin oxide) material.

The second anode 142 is connected with the first electrochromic layer 172 by utilizing the first electrode layer 181, so that an electric signal of the second anode 142 is firstly transmitted to the first electrode layer 181, and the first electrochromic layer 172 is applied with a voltage with the whole surface property by the first electrode layer 181, so that the voltage of the whole first electrochromic layer 172 reaches a first preset voltage, and the first electrochromic layer 172 is switched from a whole black state to a whole transparent state; the third anode 143 is connected with the second electrochromic layer 173 by the second electrode layer 182, so that the electrical signal acquired by the third anode 143 is firstly transferred to the second electrode layer 182, and the second electrochromic layer 173 is applied with a voltage with the whole surface property by the second electrode layer 182, so that the voltage of the whole second electrochromic layer 173 reaches the first preset voltage, and the second electrochromic layer 173 is switched from the whole black state to the whole transparent state; in this way, the first electrochromic layer 172 and the second electrochromic layer 173 are controlled by the second anode 142 and the third anode 143, and the brightness of the peep-proof area 120 of the display panel 100 is compensated in a single-side or double-side manner when the display panel 100 is in the second peep-proof mode or the third peep-proof mode, so that the purposes of better regulating and controlling light rays and improving the peep-proof effect of the display panel 100 in different peep-proof modes are achieved when the display panel 100 is in different peep-proof modes.

Fig. 4 is a schematic view of a third embodiment of a display panel according to the present application, and fig. 5 is a schematic view of light irradiated on a peep-proof area and a display area in the third embodiment of the display panel according to the present application; as shown in fig. 4 and 5, the embodiment shown in fig. 4 is based on the modification of fig. 3, in which the reflective layer 174 has a triangular structure, and the reflective layer 174 includes a first surface 175 and a second surface 176, and an included angle α between the first surface 175 and the second surface 176 ranges from 30 ° to 75 °. And the angle between the first surface 175 and the second surface 176 is towards the bottom of the pixel defining layer 150.

In fig. 5, a represents light emitted from the light emitting layer in the peep-proof region to the peep-proof region, and C represents light emitted from the light emitting layer in the peep-proof region to the reflecting layer; b represents light rays irradiated to the display area by the light emitting layer of the peep-proof area.

In this embodiment, the reflective layer 174 has a triangular structure, and the two inclined surfaces of the reflective layer 174, i.e., the first surface 175 and the second surface 176, of the triangular structure set the included angle α between the first surface 175 and the second surface 176 to be between 30 ° and 75 °, and the included angle α between the first surface 175 and the second surface 176 is towards the bottom of the pixel defining layer 150, so that the first surface 175 and the second surface 176 of the reflective layer 174 can face towards the adjacent first anode 141, and when the light-emitting layer above the first anode 141 emits downward light to irradiate the first anode 141, the first anode 141 reflects the light with an oblique angle towards the first surface 175 or the second surface 176 of the reflective layer 174, and then the first surface 175 or the second surface 176 of the reflective layer 174 reflects the light towards the display area 110, so as to compensate the brightness in the display area 110, which is beneficial to improving the display quality of the display panel 100 in the anti-peeping mode.

Since the design purpose of the reflective layer 174 with the triangular structure in this embodiment is to receive the light with the oblique angle reflected from the first anode 141 by using the reflective layer 174 and reflect the light into the display area 110, and increase the brightness of the display area 110, in order to make the reflective layer 174 better receive the light reflected from the first anode 141 and make the reflective layer 174 better reflect the light into the display area 110, the present application also designs the position where the reflective layer 174 is disposed, specifically as follows:

the reflective layer 174 is located at a height between the first electrochromic layer 172 and the second electrochromic layer 173 that is greater than one-half the height of the pixel defining layer 150 and less than or equal to one-half the spacing of the pixel defining layer 150 from the light shielding layer 171.

If the height of the reflective layer 174 between the first electrochromic layer 172 and the second electrochromic layer 173 is less than half the height of the pixel defining layer 150, the reflective layer 174 is disposed at a relatively low position, and most of the light reflected by the first anode 141 bypasses the reflective layer 174, so that the reflective layer 174 cannot better receive the light reflected by the first anode 141, and the effect of the reflective layer 174 for compensating the brightness of the display area 110 by using the reflected light is affected.

And if the reflective layer 174 is located at a height between the first electrochromic layer 172 and the second electrochromic layer 173, the height is greater than half of the distance between the pixel defining layer 150 and the light shielding layer 171. The position of the reflective layer 174 is relatively high, so that a part of the light reflected by the first anode 141 toward the reflective layer 174 passes through the lower portion of the reflective layer 174, so that the light receiving amount of the reflective layer 174 to the display area 110 is reduced, and meanwhile, the light reflected by the reflective layer 174 toward the display area 110 is more easily blocked and absorbed by the light shielding layer 171 in the peep preventing area 120, which directly affects the brightness compensation effect of the reflective layer 174 to the display area 110.

Accordingly, the present application sets the height of the reflective layer 174 between the first and second electrochromic layers 172 and 173 to be greater than one half of the height of the pixel defining layer 150 and less than or equal to one half of the distance between the pixel defining layer 150 and the light shielding layer 171. The reflective layer 174 can receive most of the light reflected by the first anode 141, and reflect most of the light to the display area 110, so as to compensate the brightness of the display area 110, thereby being beneficial to improving the display quality of the display panel 100 in the peep-proof mode.

In addition, since the reflective layer 174 in the present embodiment has a triangular structure, in order to avoid contact between the first electrochromic layer 172 and the second electrochromic layer 173, when the first electrochromic layer 172 and the second electrochromic layer 173 are electrically connected, a short circuit occurs, and the present application also designs the structure between the first electrochromic layer 172 and the second electrochromic layer 173 as follows:

an insulating layer 180 is further arranged between the first electrochromic layer 172 and the second electrochromic layer 173, the extending direction of the insulating layer 180 is the same as that of the first electrochromic layer 172 and the second electrochromic layer 173, the insulating layer 180 passes through the middle part of the reflecting layer 174 and is respectively abutted to the bottoms of the light shielding layer 171 and the pixel defining layer 150; the insulating layer 180 is made of a transparent material.

The first electrochromic layer 172 and the second electrochromic layer 173 are isolated by the insulating layer 180, so that the situation that the first electrochromic layer 172 and the second electrochromic layer 173 are in local contact at a position which does not correspond to the reflecting layer 174 due to the fact that the reflecting layer 174 is in a triangular structure and is relatively small in size is avoided, and the short circuit phenomenon is effectively prevented when the first electrochromic layer 172 or the second electrochromic layer 173 is electrified when the display panel 100 is in the first peep-proof mode or the second peep-proof mode; and the insulating layer 180 made of transparent material can allow light to irradiate the reflecting layer 174 through the insulating layer 180 without affecting the reflecting layer 174 to reflect the light toward the display region 110, thereby increasing the brightness of the display region 110.

Fig. 6 is a schematic diagram of an embodiment of a display device according to the present application, as shown in fig. 6, and further discloses a display device 10, including a housing 200, where the display device 10 further includes the display panel 100, 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 having the OLED display panel 100 and the peep-proof function, and may be a mobile phone, a computer, a tablet, etc., and the device type of the display device 10 is not specifically limited in the present application.

Since the light is often not controlled to reach the preset effect in different peep-proof modes of the display device 10, the corresponding peep-proof effect in different peep-proof modes is not ideal.

Based on the above-mentioned problems, the present application improves the display panel 100 in the display device 10, by disposing the electrochromic layer and the reflective layer 174 between the pixel defining layer 150 and the light shielding layer 171 in the peep-proof area 120, wherein the electrochromic layer is divided into the first electrochromic layer 172 and the second electrochromic layer 173, the reflective layer 174 is located between the first electrochromic layer 172 and the second electrochromic layer 173, when the display panel 100 is in the first peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are in a black state, and the light emitted to the electrochromic layer by the peep-proof sub-pixel in the peep-proof area 120 is absorbed, so as to block the light from entering into the peep-proof area 120, so as to reduce the brightness in the peep-proof area 120, and thus the peep-proof intensity of the whole display panel 100 can be effectively reduced; when the display panel 100 is in the second peep-proof mode, the first electrochromic layer 172 and the second electrochromic layer 173 are both in a transparent state, and the light emitted by the peep-proof sub-pixel passes through the first electrochromic layer 172 and the second electrochromic layer 173 and irradiates the reflecting layer 174 to be reflected, the reflecting layer 174 reflects the light into the adjacent peep-proof area 120, and compensates the light in the peep-proof area 120 so as to improve the peep-proof brightness of the peep-proof area 120 in a large viewing angle, thereby improving the peep-proof effect of the display panel 100; when the display panel 100 is in the third peep-proof mode, the electrochromic layer on one side of the peep-proof effect to be improved can be in a transparent state in a targeted manner, the light on one side of the peep-proof effect to be improved is irradiated onto the reflecting layer 174 through the electrochromic layer, and the large visual angle range of the peep-proof area 120 reflected by the reflecting layer 174 is brightened, so that the function of enhancing the peep-proof brightness of the adjustable single or double sides is achieved; according to the display device, through the mutual matching between the electrochromic layer and the reflecting layer 174, the peep-proof brightness of the double-side large viewing angles can be compensated, the brightness compensation of the single or double-side large viewing angles can be controlled, the purpose of regulating the peep-proof brightness of the display panel 100 in different peep-proof modes is achieved, the peep-proof effect and the display quality of the display panel 100 in different peep-proof modes are improved, and the quality of the display device 10 is 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 (10)

1. A display panel divided into a peep-proof area and a display area, wherein the display area is adjacent to the peep-proof area; the display panel comprises a substrate, a plurality of anodes are paved on the substrate at intervals, a pixel definition layer is arranged between two adjacent anodes, cathode layers are paved on the anodes and the pixel definition layer, and a packaging layer is arranged on the cathode layers;

the anti-peeping device is characterized in that a shading layer is arranged in the packaging layer, a first electrochromic layer, a second electrochromic layer and a reflecting layer are arranged in a pixel definition layer corresponding to the lower part of the shading layer, and the reflecting layer is positioned between the first electrochromic layer and the second electrochromic layer;

a part of the first electrochromic layer and a part of the second electrochromic layer are positioned in the pixel definition layer, are connected with the bottom of the pixel definition layer, and extend towards the direction of the light shielding layer and are abutted against the light shielding layer;

when the display panel is in a first peep-proof mode, the first electrochromic layer and the second electrochromic layer are in black states; when the display panel is in a second peep-proof mode, the first electrochromic layer and the second electrochromic layer are switched from black states to transparent states; when the display panel is in the third peep-proof mode, the first electrochromic layer or the second electrochromic layer is in a transparent state.

2. The display panel according to claim 1, wherein a driving electrode layer is further disposed between the substrate and the pixel defining layer, the anode includes a first anode, a second anode, and a third anode, the first anode is disposed between two pixel defining layers in the peep-proof region, and the second anode and the third anode are both disposed in the pixel defining layer and connected to the driving electrode layer;

the second anode is positioned on one side of the first electrochromic layer far away from the reflecting layer, and when the voltage of the first electrochromic layer reaches a first preset voltage, the first electrochromic layer is switched from a black state to a transparent state;

the third anode is positioned on one side of the second electrochromic layer far away from the reflecting layer, and when the voltage of the second electrochromic layer reaches a first preset voltage, the second electrochromic layer is switched from a black state to a transparent state.

3. The display panel according to claim 2, wherein a first electrode layer is provided between the first electrochromic layer and the reflective layer, the first electrode layer being connected to the second anode, the second anode controlling the voltage of the first electrochromic layer to reach a first preset voltage through the first electrode layer; a second electrode layer is arranged between the second electrochromic layer and the reflecting layer, the second electrode layer is connected with the third anode, and the third anode controls the voltage of the second electrochromic layer to reach a first preset voltage through the second electrode layer.

4. A display panel as claimed in claim 3, characterized in that the first preset voltage ranges between 0.9v and 1.2 v.

5. The display panel of any one of claims 1 to 4, wherein the reflective layer has a polygonal or linear structure.

6. The display panel of claim 5, wherein the reflective layer is linear, and the reflective layer has an extension direction identical to an extension direction of the first electrochromic layer and the second electrochromic layer and a length identical to the extension direction of the first electrochromic layer and the second electrochromic layer.

7. The display panel of claim 5, wherein the reflective layer has a triangular structure, the reflective layer comprising a first face and a second face, the first face and the second face having an included angle ranging from 30 ° to 75 °; and the included angle between the first surface and the second surface faces the bottom of the pixel definition layer.

8. The display panel of claim 7, wherein the reflective layer is located at a height between the first electrochromic layer and the second electrochromic layer that is greater than one half of the height of the pixel defining layer and less than or equal to one half of the spacing between the pixel defining layer and the light shielding layer.

9. The display panel according to claim 8, wherein an insulating layer is further provided between the first electrochromic layer and the second electrochromic layer, the extending direction of the insulating layer is the same as the extending direction of the first electrochromic layer and the second electrochromic layer, and the insulating layer passes through the middle part of the reflective layer and is respectively abutted to the bottom parts of the light shielding layer and the pixel defining layer; the insulating layer is made of transparent materials.

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.