Display panel and display device

Abstract

The present invention discloses a display panel and a display device, relating to the field of display technology. The display panel includes a substrate, a driving circuit, a pixel definition layer, and a light-transmitting encapsulation layer stacked in sequence. The pixel definition layer includes a light-emitting sub-pixel and a black matrix disposed therearound. The display panel also includes a color-resistance sub-pixel and a dimming unit. The color-resistance sub-pixel is disposed on a side of the light-transmitting encapsulation layer facing away from the substrate and opposite the light-emitting sub-pixel. The dimming unit is disposed adjacent to the color-resistance sub-pixel. The dimming unit includes a first electrode disposed on a side of the light-transmitting encapsulation layer facing away from the substrate and opposite the black matrix, a second electrode disposed at an angle to the first electrode, and reflective charged particles disposed between the first and second electrodes. When the light-emitting sub-pixel is in a bright state, the first electrode and / or the second electrode jointly form a first electric field. Under the first electric field, the reflective charged particles can reflect ambient light. The display panel provided by the present invention has high luminous efficiency.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Diodes (OLEDs) are a next-generation display technology with many advantages. However, the metal layer in OLED displays reflects ambient light, reducing display contrast and affecting viewing quality.

[0003] To reduce the impact of ambient light, a circular polarizer is usually attached to the OLED panel, or a color filter layer is placed on the OLED and a black matrix is ​​placed near the color filter layer. However, these traditional solutions for reducing ambient light result in lower luminous efficiency of the display panel. Summary of the Invention

[0004] The main purpose of the present invention is to provide a display panel and a display device, aiming to improve the problem of low luminous efficiency of the display panel.

[0005] To achieve the above-mentioned objectives, the display panel proposed in the present invention includes a substrate, a driving circuit, a pixel definition layer and a translucent packaging layer stacked in sequence, the pixel definition layer including a light-emitting sub-pixel and a black matrix arranged around the light-emitting sub-pixel; characterized in that the display panel also includes a color-resistance sub-pixel and a dimming unit, the color-resistance sub-pixel is arranged on the side of the light-transmitting packaging layer away from the substrate and is arranged opposite to the light-emitting sub-pixel, the dimming unit is arranged adjacent to the color-resistance sub-pixel, the dimming unit includes a first electrode, a second electrode, and reflective charged particles, the first electrode is arranged on the side of the light-transmitting packaging layer away from the substrate and is arranged opposite to the black matrix; the second electrode is arranged at an angle to the first electrode; the reflective charged particles are arranged between the first electrode and the second electrode; when the light-emitting sub-pixel is in a bright state, the first electrode and / or the second electrode jointly form a first electric field, and under the first electric field, the reflective charged particles can reflect ambient light.

[0006] In one embodiment, when the light-emitting sub-pixel is in a bright state, the light-reflecting charged particles are arranged along an extension direction of the second electrode.

[0007] In one embodiment, the dimming unit further includes light-absorbing charged particles, the light-absorbing charged particles are disposed between the first electrode and the second electrode, and the light-absorbing charged particles have opposite electrical properties to the light-reflecting charged particles.

[0008] In one embodiment, when the light-emitting sub-pixel is in a bright state, the polarities of the first electrode and the second electrode are opposite and form the first electric field, and the light-absorbing charged particles are arranged close to the first electrode, and the light-reflecting charged particles are arranged close to the second electrode.

[0009] In one embodiment, when the light-emitting sub-pixel is in a dark state, the first electrode is energized and forms a second electric field, and the polarity of the first electrode is opposite to the polarity of the light-reflecting charged particles.

[0010] In one embodiment, two dimming units are provided, and the two dimming units are mirror-stacked in a direction perpendicular to the substrate.

[0011] In one embodiment, the first electrode and the second electrode are arranged perpendicularly.

[0012] In one embodiment, at least two dimming units are provided, and the at least two dimming units are symmetrically arranged on two opposite sides of the color-resistance sub-pixel in a direction parallel to the substrate.

[0013] In one embodiment, the dimming unit further includes a light-transmitting liquid, which is filled in a space enclosed by the color-resistance sub-pixel, the first electrode, and the second electrode, and the reflective charged particles can move in the light-transmitting liquid.

[0014] The present invention further provides a display device including the above-mentioned display panel.

[0015] The technical solution of the present invention arranges the light-emitting sub-pixels and the color-resistance sub-pixels in the pixel definition layer relative to each other, so that the external ambient light can shine into the area where the light-emitting sub-pixels are located through the color-resistance sub-pixels, thereby increasing the display brightness of the display panel. In addition, the arrangement of the color-resistance sub-pixels reduces the reflection coefficient of the light reflected from the drive layer, thereby improving the problem of reduced contrast of the display due to light reflected by the drive layer of the display panel. In addition, a dimming unit is also provided in the present invention, and the dimming unit is arranged adjacent to the color-resistance sub-pixels. The first electrode and / or the second electrode in the dimming unit jointly form a first electric field. Under the first electric field, the reflective charged particles can reflect the ambient light, and the ambient light reflected by the reflective charged particles can increase the display brightness, thereby improving the problem of low luminous efficiency of the display panel caused by the black matrix around the traditional color-resistance sub-pixels absorbing light. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of an example of a light-emitting sub-pixel in a display panel in a bright state according to the first embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of the middle dimming unit;

[0019] Figure 3 This is a schematic structural diagram of an example of a light-emitting sub-pixel in a display panel in a dark state according to the first embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of another example of a light-emitting sub-pixel in a display panel in a bright state according to the first embodiment of the present invention;

[0021] Figure 5 This is a structural schematic diagram of another example of a light-emitting sub-pixel in a display panel in a dark state according to the first embodiment of the present invention.

[0022] Description of Figure Numbers:

[0023] 100, substrate;

[0024] 200, driving circuit;

[0025] 300, pixel definition layer; 310, light-emitting sub-pixel; 320, black matrix;

[0026] 400, light-transmitting encapsulation layer;

[0027] 500, color-blocking subpixel;

[0028] 600, dimming unit; 610, first electrode; 620, second electrode; 630, light-reflecting charged particles; 640, light-absorbing charged particles; 650, light-transmitting liquid;

[0029] 700. Packaging structure.

[0030] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Organic Light Emitting Diode (OLED) is an optoelectronic technology that utilizes organic semiconductor materials to produce reversible color changes when driven by an electric current, creating a colorful display. OLEDs offer advantages such as lightness, high brightness, active luminescence, low energy consumption, wide viewing angle, fast response, flexibility, wide operating temperature range, low voltage requirements, high power efficiency, rapid response, simple structure, low cost, and virtually infinite contrast. They are considered one of the most promising next-generation display technologies. However, the metal layer in OLED displays reflects ambient light, reducing contrast and impairing viewing quality.

[0035] To reduce the impact of ambient light, circular polarizers are typically applied to OLED panels, but this reduces the brightness of light passing through them by 50%. Alternatively, a color filter layer is applied to the OLED to improve ambient light reflection. However, while this layer can reduce the panel's reflectivity, the black matrix near the layer also blocks some light from within the panel, preventing it from escaping. This results in a poor viewing angle and a loss of brightness. These traditional solutions for reducing ambient light also result in lower luminous efficiency for the display panel.

[0036] Example 1:

[0037] In order to improve the problem of low luminous efficiency of a display panel, the present invention provides a display panel.

[0038] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the display panel includes a substrate 100, a driving circuit 200, a pixel definition layer 300, and a light-transmitting encapsulation layer 400, which are stacked in sequence. The pixel definition layer 300 includes a light-emitting sub-pixel 310 and a black matrix 320 disposed around the light-emitting sub-pixel 310. The display panel is characterized in that it also includes a color-resistance sub-pixel 500 and a dimming unit 600. The color-resistance sub-pixel 500 is disposed on a side of the light-transmitting encapsulation layer 400 facing away from the substrate 100 and is disposed opposite to the light-emitting sub-pixel 310. The dimming unit 600 is disposed adjacent to the color-resistance sub-pixel 500. The dimming unit 600 includes a first electrode 610, a second electrode 620, and reflective charged particles 630. The first electrode 610 is arranged on the side of the transparent encapsulation layer 400 facing away from the substrate 100, and is arranged opposite to the black matrix 320; the second electrode 620 is arranged at an angle to the first electrode 610; the reflective charged particles 630 are arranged between the first electrode 610 and the second electrode 620; when the light-emitting sub-pixel 310 is in the bright state, the first electrode 610 and / or the second electrode 620 jointly form a first electric field. Under the first electric field, the reflective charged particles 630 can reflect ambient light.

[0039] The light-emitting sub-pixel 310 in the pixel definition layer 300 is arranged opposite the color-resistance sub-pixel 500, so that external ambient light can penetrate the area where the light-emitting sub-pixel 310 is located through the color-resistance sub-pixel 500, thereby increasing the display brightness of the display panel. In addition, the color-resistance sub-pixel 500 can reduce the reflection coefficient of light, thereby improving the problem of reduced contrast of the display due to light reflected by the drive layer of the display panel. In addition, the present invention also provides a dimming unit 600, which is arranged adjacent to the color-resistance sub-pixel 500. The first electrode 610 and / or the second electrode 620 in the dimming unit 600 jointly form a first electric field. Under the first electric field, the reflective charged particles 630 can reflect ambient light. The ambient light reflected by the reflective charged particles 630 can increase the display brightness, thereby improving the problem of low luminous efficiency of the display panel caused by the black matrix 320 around the traditional color-resistance sub-pixel 500 absorbing light. The reflective charged particles 630 refer to charged particles that can reflect light, such as white charged particles or silver charged particles. It should be noted that, in order to improve the low luminous efficiency of the display panel, the dimming unit 600 may include only the reflective charged particles 630; or the dimming unit 600 may include light-absorbing charged particles 640 in addition to the reflective charged particles 630. It is understood that as long as the light-emitting sub-pixel 310 is in the bright state, ambient light can be irradiated on the reflective charged particles 630, and the reflective charged particles 630 can reflect the ambient light and emit light.

[0040] Specifically, to form the first electric field, in one example, only one of the first electrode 610 and the second electrode 620 may be energized, and the charge applied to only one of the first electrode 610 and the second electrode 620 is opposite to the charge of the light-reflecting charged particles 630. For example, if the light-reflecting charged particles 630 are positively charged, a negative charge may be applied to the first electrode 610, while the second electrode 620 is not energized. As a result, the first electrode 610 attracts the light-reflecting charged particles 630 to move, causing the light-reflecting charged particles 630 to be arranged close to the first electrode 610. Consequently, when ambient light strikes the reflective charged particles 630, the reflective charged particles 630 are able to reflect the ambient light, thereby improving the utilization of the ambient light and thereby enhancing the luminous efficiency and display brightness of the display panel. Alternatively, if the reflective charged particles 630 are negatively charged, a positive charge may be applied to the first electrode 610 while the second electrode 620 is not energized, thereby causing the first electrode 610 to attract the reflective charged particles 630 to move, causing the reflective charged particles 630 to be arranged close to the first electrode 610. This allows ambient light to be irradiated by the reflective charged particles 630, causing the reflective charged particles 630 to reflect the ambient light, thereby improving the utilization of the ambient light and thereby improving the luminous efficiency and display brightness of the display panel. Alternatively, if the reflective charged particles 630 are positively charged, a negative charge may be applied to the second electrode 620 while the first electrode 610 is not energized, thereby causing the second electrode 620 to attract the reflective charged particles 630 to move, causing the reflective charged particles 630 to be arranged close to the second electrode 620. This allows ambient light to be irradiated by the reflective charged particles 630, causing the reflective charged particles 630 to reflect the ambient light, thereby improving the utilization of the ambient light and thereby improving the luminous efficiency and display brightness of the display panel. Alternatively, if the reflective charged particles 630 are negatively charged, a positive charge can be applied to the second electrode 620 while the first electrode 610 is not energized. This allows the second electrode 620 to attract the reflective charged particles 630, causing them to be arranged close to the second electrode 620. This allows ambient light to be reflected by the reflective charged particles 630, thereby improving the utilization of ambient light and thereby increasing the luminous efficiency and brightness of the display panel. In another example, both the first electrode 610 and the second electrode 620 can be energized simultaneously. For example, electricity with the same polarity as that of the reflective charged particles 630 is applied to the first electrode 610, and electricity with a polarity opposite to that of the first electrode 610 is applied to the second electrode 620. Then, the reflective charged particles 630 are arranged close to the second electrode 620 under the action of the first electric field jointly formed by the first electrode 610 and the second electrode 620, so that when ambient light is irradiated on the reflective charged particles 630, the reflective charged particles 630 can reflect the ambient light, thereby improving the utilization rate of the ambient light and further improving the luminous efficiency and display brightness of the display panel.Alternatively, electricity with the same polarity as that of the reflective charged particles 630 is applied to the second electrode 620, and electricity with a polarity opposite to that of the second electrode 620 is applied to the first electrode 610. Then, the reflective charged particles 630 are arranged close to the first electrode 610 under the action of the first electric field jointly formed by the first electrode 610 and the second electrode 620, so that when the ambient light is irradiated on the reflective charged particles 630, the reflective charged particles 630 can reflect the ambient light, thereby improving the utilization rate of the ambient light and thereby improving the luminous efficiency and display brightness of the display panel.

[0041] The technical solution of the present invention arranges the light-emitting sub-pixel 310 and the color-resistance sub-pixel 500 in the pixel definition layer 300 relative to each other, so that external ambient light can pass through the color-resistance sub-pixel 500 to illuminate the area where the light-emitting sub-pixel 310 is located, thereby increasing the display brightness of the display panel. In addition, the arrangement of the color-resistance sub-pixel 500 reduces the reflection coefficient of the light reflected from the drive layer, thereby improving the problem of reduced contrast of the display due to light reflected from the drive layer of the display panel. In addition, the present invention also provides a dimming unit 600, which is arranged adjacent to the color-resistance sub-pixel 500. The first electrode 610 and / or the second electrode 620 in the dimming unit 600 jointly form a first electric field. Under the first electric field, the reflective charged particles 630 can reflect ambient light. The ambient light reflected by the reflective charged particles 630 can increase the display brightness, thereby improving the problem of low luminous efficiency of the display panel caused by the black matrix 320 around the traditional color-resistance sub-pixel 500 absorbing light. In addition, the problem of reduced viewing angle caused by the traditional black matrix 320 being set around the color-resistance sub-pixel 500 is solved. The technical solution of the present invention also increases the viewing angle compared to the traditional solution of setting the black matrix 320 around the color-resistance sub-pixel 500.

[0042] Please refer to Figure 1 and Figure 2 In some examples of the present invention, when the light-emitting sub-pixel 310 is in the bright state, the reflective charged particles 630 are arranged along the extension direction of the second electrode 620 .

[0043] By arranging the reflective charged particles 630 along the extension direction of the second electrode 620, the second electrode 620 is set at an angle to the first electrode 610, so that the second electrode 620 is set at an angle to the substrate 100. Therefore, after receiving external ambient light, the reflective charged particles 630 can reflect the external ambient light into the color-resistance sub-pixel 500, thereby, on the one hand, increasing the luminous intensity of the corresponding area of ​​the color-resistance sub-pixel 500 and improving the luminous efficiency; on the other hand, it can also reduce the risk of ambient light being directly reflected into the external environment or the human eye, thereby reducing the contrast of the display.

[0044] Please refer to Figures 1 to 3In some examples of the present invention, the dimming unit 600 further includes light-absorbing charged particles 640 , which are disposed between the first electrode 610 and the second electrode 620 , and the light-absorbing charged particles 640 have opposite electrical properties to the light-reflecting charged particles 630 .

[0045] The dimming unit 600 also includes light-absorbing charged particles 640, which have opposite electrical properties to the light-reflecting charged particles 630. When the first electrode 610 and the second electrode 620 are both energized and the polarities of the first electrode 610 and the second electrode 620 are opposite, the light-reflecting charged particles 630 and the light-absorbing charged particles 640 are arranged at an angle, so that when the light-emitting sub-pixel 310 is in a dark state, the light-absorbing charged particles 640 absorb part of the ambient light, thereby reducing the risk of reflection of the ambient light. Alternatively, when one of the first electrode 610 or the second electrode 620 is energized, the first electrode 610 or the second electrode 620 attracts the light-reflecting charged particles 630. Furthermore, since the light-absorbing charged particles 640 have opposite electrical properties to the light-reflecting charged particles 630, the light-reflecting charged particles 630 can also attract the light-absorbing charged particles 640. As a result, when the light-emitting sub-pixel 310 is in the dark state, at least a portion of the ambient light can be absorbed by the light-absorbing charged particles 640, thereby reducing the risk of ambient light reflection. Of course, when the light-emitting sub-pixel 310 is in the bright state, the light-absorbing charged particles 640 can also absorb a portion of the ambient light, thereby also reducing the risk of ambient light reflection.

[0046] Please refer to Figure 1 and Figure 2 Furthermore, when the light-emitting sub-pixel 310 is in the bright state, the polarities of the first electrode 610 and the second electrode 620 are opposite and form a first electric field, and the light-absorbing charged particles 640 are arranged close to the first electrode 610, and the light-reflecting charged particles 630 are arranged close to the second electrode 620.

[0047] When the light-emitting sub-pixel 310 is in the bright state, by arranging the light-absorbing charged particles 640 close to the first electrode 610 and the light-reflecting charged particles 630 close to the second electrode 620, the light-reflecting charged particles 630 can reflect the ambient light into the color-resistance sub-pixel 500, thereby ensuring full utilization of part of the ambient light and improving the luminous efficiency of the display panel, and also preventing the ambient light from being directly reflected back to the outside of the display panel through the light-reflecting charged particles 630, thereby reducing the reflection coefficient of the display panel and improving the contrast of the display panel. On the other hand, by arranging the light-absorbing charged particles 640 close to the first electrode 610, the ambient light directly irradiating the light-absorbing charged particles 640 can be absorbed. In addition, the light passing through the color-resistance sub-pixel 500 and reflected by the light-transmitting encapsulation layer 400 is irradiated onto the light-absorbing charged particles 640 to be absorbed by the light-absorbing charged particles 640, thereby reducing the reflection coefficient of the display panel and preventing the light reflected by the light-transmitting encapsulation layer 400 from directly emitting from the display panel, thereby reducing the reflection coefficient of the display panel and improving the contrast of the display panel.

[0048] like Figure 3 As shown, further, when the light-emitting sub-pixel 310 is in the dark state, the first electrode 610 is energized and forms a second electric field, and the polarity of the first electrode 610 is opposite to the polarity of the light-reflecting charged particles 630.

[0049] With such a configuration, under the second electric field, the first electrode 610 attracts the reflective charged particles 630. Since the light-absorbing charged particles 640 have opposite polarity to the reflective charged particles 630, the reflective charged particles 630 will in turn attract the light-absorbing charged particles 640, thereby making the reflective charged particles 630 and the light-absorbing charged particles 640 both arranged close to the first electrode 610, and the reflective charged particles 630 are arranged between the light-absorbing charged particles 640 and the first electrode 610.

[0050] When the light-emitting sub-pixel 310 is in a dark state, the ambient light directly irradiated on the light-absorbing charged particles 640 will be directly absorbed by the light-absorbing charged particles 640, while the ambient light passing through the color-resistance sub-pixel 500 is reflected by the light-transmitting encapsulation layer 400 and irradiated on the dimming unit 600, and then irradiated on the reflective charged particles 630 through the first electrode 610 of the dimming unit 600, and then the reflective charged particles 630 reflect the ambient light so that the reflected light is irradiated on the black matrix 320 of the pixel definition layer 300, thereby reducing the reflection of the ambient light, thereby ensuring that the display panel does not leak light in the dark state.

[0051] Please refer to Figure 4 and Figure 5 Furthermore, two dimming units 600 are provided, and the two dimming units 600 are mirror-stacked in a direction perpendicular to the substrate 100 .

[0052] By setting two dimming units 600, and the two dimming units 600 are mirror-stacked in a direction perpendicular to the substrate 100, the light-emitting sub-pixel 310 is in a bright state, and the reflective charged particles 630 in the dimming unit 600 away from the substrate 100 reflect the ambient light into the color-resistance sub-pixel 500, while the reflective charged particles 630 in the dimming unit 600 close to the substrate 100 can reflect the light that passes through the color-resistance sub-pixel 500 and is reflected by the transparent encapsulation layer 400. Then, the reflective charged particles 630 in the dimming unit 600 can reflect the light reflected by the transparent encapsulation layer 400 back into the color-resistance sub-pixel 500, thereby improving the utilization rate of the ambient light and improving the luminous efficiency of the display panel.

[0053] When the light-emitting sub-pixel 310 is in the dark state, the first electrodes 610 in the two radially stacked dimming units 600 can both be energized, and the polarity of the first electrodes 610 can be made opposite to the polarity of the light-reflecting charged particles 630. With this arrangement, the light-absorbing charged particles 640 in the dimming unit 600 farther from the substrate 100 absorb ambient light, while the light-absorbing charged particles 640 in the dimming unit 600 closer to the substrate 100 can absorb ambient light that has passed through the color-resistance sub-pixel 500 and been reflected by the light-transmitting encapsulation layer 400. This ensures the stability of the display panel in the dark state and reduces the risk of light leakage from the display panel in the dark state.

[0054] Please refer to Figure 1 and Figure 2 In some examples of the present invention, the first electrode 610 and the second electrode 620 are arranged vertically.

[0055] By arranging the first electrode 610 and the second electrode 620 vertically, the second electrode 620 is arranged vertically to the substrate 100, so that when the light-emitting sub-pixel 310 is in a bright state and reflective charged particles 630 are arranged at the second electrode 620, more ambient light can be irradiated onto the reflective charged particles 630 and reflected into the color-resistance sub-pixel 500 through the reflective charged particles 630. On the one hand, the utilization rate of ambient light can be improved, thereby improving the luminous efficiency of the display panel. On the other hand, the risk of ambient light being directly reflected out of the display panel through the reflective charged particles 630 is reduced, thereby improving the contrast of the display panel.

[0056] like Figure 1 As shown, in some examples of the present invention, at least two dimming units 600 are provided, and the at least two dimming units 600 are symmetrically arranged on opposite sides of the color-resistance sub-pixel 500 in a direction parallel to the substrate 100 .

[0057] By setting at least two dimming units 600, and at least two dimming units 600 are symmetrically arranged on opposite sides of the color-resistance sub-pixel 500 in a direction parallel to the substrate 100, more ambient light can be utilized when the light-emitting sub-pixel 310 is in a bright state, thereby improving the luminous efficiency of the display panel.

[0058] like Figure 1 As shown, it can be understood that the dimming unit 600 may include a separate sealing structure, and the first electrode 610, the second electrode 620, the reflective charged particles 630, and the light-absorbing charged particles 640 may all be arranged in the sealing structure; or a packaging structure 700 is provided on the color-resistance sub-pixel 500, and the packaging structure 700 is at least partially opposite to the first electrode 610, so that the sealing structure of the dimming unit 600 can be formed by the color-resistance sub-pixel 500, the first electrode 610, the second electrode 620 and the packaging structure 700 to form a sealing structure, thereby reducing the risk of the reflective charged particles 630 and the light-absorbing charged particles 640 escaping from the dimming unit 600.

[0059] Please refer to Figure 1 and Figure 2 In some examples of the present invention, the dimming unit 600 further includes a light-transmitting liquid 650 , which is filled in the space enclosed by the color-resistance sub-pixel 500 , the first electrode 610 , and the second electrode 620 , and the reflective charged particles 630 can move in the light-transmitting liquid 650 .

[0060] With such a configuration, when the encapsulation layer is coated on the side of the color-resistance sub-pixel 500 facing away from the substrate 100, the risk of the encapsulation layer filling the space enclosed by the color-resistance sub-pixel 500, the first electrode 610, and the second electrode 620 can be reduced, thereby reducing the risk of the encapsulation layer encapsulating and fixing the reflective charged particles 630 and the light-absorbing charged particles 640 and preventing them from moving.

[0061] Example 2:

[0062] The present invention also proposes a display device, which includes a display panel. The specific structure of the display panel refers to the above-mentioned embodiment. Since this display device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0063] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A display panel comprising a substrate, a driving circuit, a pixel definition layer, and a light-transmitting encapsulation layer stacked in sequence, wherein the pixel definition layer comprises light-emitting sub-pixels and a black matrix disposed around the light-emitting sub-pixels; The display panel further includes a color-resistance sub-pixel and a dimming unit. The color-resistance sub-pixel is disposed on a side of the light-transmitting encapsulation layer away from the substrate and is arranged opposite to the light-emitting sub-pixel. The dimming unit is disposed adjacent to the color-resistance sub-pixel. The dimming unit includes: a first electrode, the first electrode being disposed on a side of the light-transmitting encapsulation layer facing away from the substrate and opposite to the black matrix; a second electrode, the second electrode being arranged at an angle to the first electrode; reflective charged particles, the reflective charged particles being disposed between the first electrode and the second electrode; When the light-emitting sub-pixel is in a bright state, the first electrode and / or the second electrode jointly form a first electric field. Under the first electric field, the light-reflecting charged particles can reflect ambient light.

2. The display panel according to claim 1, wherein When the light-emitting sub-pixel is in a bright state, the light-reflecting charged particles are arranged along the extension direction of the second electrode.

3. The display panel according to claim 2, wherein: The dimming unit further includes light-absorbing charged particles, which are disposed between the first electrode and the second electrode, and have opposite electrical properties to the light-reflecting charged particles.

4. The display panel according to claim 3, wherein: When the light-emitting sub-pixel is in a bright state, the first electrode and the second electrode have opposite polarities and form the first electric field, and the light-absorbing charged particles are arranged close to the first electrode, and the light-reflecting charged particles are arranged close to the second electrode.

5. The display panel according to claim 3, wherein: When the light-emitting sub-pixel is in a dark state, the first electrode is energized and forms a second electric field, and the polarity of the first electrode is opposite to the polarity of the light-reflecting charged particles.

6. The display panel according to claim 4 or 5, wherein: There are two dimming units, and the two dimming units are mirror-stacked in a direction perpendicular to the substrate.

7. The display panel according to claim 1, wherein: The first electrode and the second electrode are arranged perpendicularly.

8. The display panel according to claim 1, wherein: At least two dimming units are provided, and the at least two dimming units are symmetrically arranged on two opposite sides of the color-resistance sub-pixel in a direction parallel to the substrate.

9. The display panel according to claim 1, wherein: The dimming unit further includes a light-transmitting liquid, which is filled in a space enclosed by the color-resistance sub-pixel, the first electrode, and the second electrode. The reflective charged particles can move in the light-transmitting liquid.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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