CN115101570A - OLED display panel and OLED display device - Google Patents

Abstract

The present application provides an OLED display panel and an OLED display device; the OLED display panel is provided with a light control layer, the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer and the red quantum dot layer are arranged Corresponding to at least one of the green quantum dot layers, the light control layer includes a first electrode layer, a second electrode layer, and a color-changing layer located between the first electrode layer and the second electrode layer, and the color-changing layer is in the first state. The light transmittance is lower than the light transmittance in the second state, so that when the OLED display panel is in a non-display state, the light transmittance of the OLED display panel is reduced by the discoloration layer, so as to avoid the reflection of external light on the quantum dot layer. When the display panel is in the display state, the color-changing layer normally transmits light, so that the OLED display panel can be displayed normally, which prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

Description

OLED display panel and OLED display device

technical field

The present application relates to the field of display technology, and in particular, to an OLED display panel and an OLED display device.

Background technique

OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display devices are widely used due to their advantages of self-luminescence, wide color gamut, low power consumption, and flexible display. Quantum Dots (QD) display technology is widely used due to its wide color gamut, stable material properties, precise color control, and high color purity of red, green and blue. In order to improve the display effect of the existing display device, the technology of arranging a quantum dot layer on the OLED device is adopted to improve the viewing angle and the color gamut. Specifically, in order to improve the display effect of the QD-OLED display device and prevent the QD-OLED display device from being excited by external light to cause the QD-OLED display device to present a yellowish reflective state when it is not displaying, the existing QD-OLED display device will be close to the external light. A circular polarizer is set on one side, and a color filter layer is set on the quantum dot layer to filter the external ambient light and reduce the influence of the external light on the QD-OLED, but this design will cause the light intensity of the QD-OLED output light to change. weak, increasing the power consumption of the QD-OLED.

Therefore, the existing QD-OLED display device has the technical problem of high power consumption caused by setting a color filter layer to filter light.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an OLED display panel and an OLED display device to alleviate the technical problem of high power consumption caused by setting a color filter layer to filter light in the existing QD-OLED display device.

An embodiment of the present application provides an OLED display panel, the OLED display panel includes:

substrate;

a driving circuit layer, disposed on one side of the substrate;

a light-emitting functional layer, disposed on the side of the driving circuit layer away from the substrate;

a quantum dot layer, disposed on the side of the light-emitting functional layer away from the driving circuit layer, the quantum dot layer at least includes a red quantum dot layer and a green quantum dot layer;

Wherein, the OLED display panel further includes a light control layer, and the light control layer includes a first electrode layer, a second electrode layer, and a color-changing layer located between the first electrode layer and the second electrode layer. The light transmittance of the color changing layer in the first state is lower than the light transmittance in the second state, the light control layer is disposed on the side of the quantum dot layer away from the light-emitting functional layer, and the The light control layer is disposed corresponding to at least one of the red quantum dot layer and the green quantum dot layer.

In some embodiments, the OLED display panel further includes a black matrix layer, the quantum dot layers are arranged between the black matrix layers at intervals, the light control layer is arranged between the black matrix layers, and the The sum of the thickness of the light control layer and the thickness of the quantum dot layer is greater than or equal to the thickness of the black matrix layer.

In some embodiments, the light-emitting functional layer includes a light-emitting material layer, the light-emitting material layer includes a blue light-emitting material, the OLED display panel includes a plurality of pixel units, and the pixel units include a red quantum dot layer, a green quantum dot layer, and a Dot layer and substrate layer.

In some embodiments, the light control layer includes a first light control layer and a second light control layer, the first light control layer is disposed on a side of the red quantum dot layer away from the light-emitting functional layer, so The second light control layer is disposed on a side of the green quantum dot layer away from the light-emitting functional layer.

In some embodiments, the light-emitting functional layer includes a light-emitting material layer, the light-emitting material layer includes a white light-emitting material, the OLED display panel includes a plurality of pixel units, and the pixel units include a red quantum dot layer, a green quantum dot layer layer and blue quantum dot layer.

In some embodiments, the light control layer includes a third light control layer, a fourth light control layer and a fifth light control layer, the third light control layer is disposed on the red quantum dot layer away from the light-emitting function The fourth light control layer is disposed on the side of the green quantum dot layer away from the light-emitting functional layer, and the fifth light control layer is disposed on the blue quantum dot layer away from the light-emitting layer. one side of the functional layer.

In some embodiments, the first electrode layer and the color changing layer are disposed between the black matrix layers, and the second electrode layer is disposed on a side of the black matrix layer away from the light-emitting functional layer.

In some embodiments, the OLED display panel further includes a black matrix layer, the quantum dot layer is disposed between the black matrix layers, and the light control layer is disposed on the black matrix layer away from the light-emitting functional layer side.

In some embodiments, the material of the light control layer includes one of a mixture of a viologen-based material and a polymer material and tungsten oxide.

Meanwhile, an embodiment of the present application provides an OLED display device, and the OLED display device includes the OLED display panel and the driving chip as described in any one of the foregoing embodiments.

Beneficial effects: The present application provides an OLED display panel and an OLED display device; the OLED display panel includes a substrate, a driving circuit layer, a light-emitting functional layer and a quantum dot layer, the driving circuit layer is arranged on one side of the substrate, and the light-emitting functional layer is arranged On the side of the driving circuit layer away from the substrate, the quantum dot layer is arranged on the side of the light-emitting functional layer away from the driving circuit layer, and the quantum dot layer at least includes a red quantum dot layer and a green quantum dot layer, wherein the display panel also includes a light control layer, the light control layer includes a first electrode layer, a second electrode layer and a color-changing layer located between the first electrode layer and the second electrode layer, and the light transmittance of the color-changing layer in the first state is smaller than that in the second state. Light transmittance, the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer is arranged corresponding to at least one of the red quantum dot layer and the green quantum dot layer. In the present application, a light control layer is arranged, and the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer is arranged corresponding to at least one of the red quantum dot layer and the green quantum dot layer. It includes a first electrode layer, a second electrode layer and a discoloration layer located between the first electrode layer and the second electrode layer, and the light transmittance of the discoloration layer in the first state is smaller than that in the second state, so that in the When the OLED display panel is in the non-display state, the light transmittance of the OLED display panel is reduced by the color-changing layer, so as to avoid the reflection of external light on the quantum dot layer. The normal display of the display panel prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

Description of drawings

The technical solutions and other beneficial effects of the present application will be apparent through the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings.

FIG. 1 is a first schematic diagram of an OLED display panel provided by an embodiment of the present application.

FIG. 2 is a second schematic diagram of an OLED display panel provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The embodiments of the present application provide an OLED display panel and an OLED display device for solving the technical problem of high power consumption caused by setting a color filter layer to filter light in the existing QD-OLED display device, so as to alleviate the above technical problem.

As shown in FIG. 1 , an embodiment of the present application provides an OLED display panel. The OLED display panel 1 includes:

substrate 11;

The driving circuit layer 12 is arranged on one side of the substrate 11;

The light-emitting functional layer 13 is disposed on the side of the driving circuit layer 12 away from the substrate 11;

The quantum dot layer 15 is disposed on the side of the light-emitting functional layer 13 away from the driving circuit layer 12, and the quantum dot layer 15 at least includes a red quantum dot layer 151 and a green quantum dot layer 152;

The OLED display panel 1 further includes a light control layer 16, and the light control layer 16 includes a first electrode layer 161, a second electrode layer 163, and the first electrode layer 161 and the second electrode layer 163. The color-changing layer 162 in between, the light transmittance of the color-changing layer 162 in the first state is smaller than the light transmittance in the second state, and the light control layer 16 is disposed on the quantum dot layer 15 away from all one side of the light-emitting functional layer 13 , and the light control layer 16 is disposed corresponding to at least one of the red quantum dot layer 151 and the green quantum dot layer 152 .

The embodiment of the present application provides an OLED display panel, the OLED display panel is provided with a light control layer, the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer is connected with the red quantum dot layer and the green At least one of the quantum dot layers is correspondingly arranged, the light control layer includes a first electrode layer, a second electrode layer, and a color-changing layer located between the first electrode layer and the second electrode layer, and the color-changing layer transmits light in the first state The light transmittance is lower than the light transmittance in the second state, so that when the OLED display panel is in the non-display state, the light transmittance of the OLED display panel is reduced by the color changing layer, so as to avoid the reflection of external light on the quantum dot layer. When in the display state, the color-changing layer normally transmits light, so that the OLED display panel can be displayed normally, which prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

It should be noted that the first state refers to a state in which the OLED display panel does not display, and the second state refers to a state in which the OLED display panel displays.

It should be noted that the transition process of the light transmittance of the color-changing layer in the first state and the second state can be realized by the voltage change of the first electrode layer and the second electrode layer. For example, the color-changing layer is in the first and second electrode layers. When the voltage difference between the electrode layers is greater than a certain value, the color-changing layer will change from a transparent state to an opaque state, or the color-changing layer will change from a state of low light transmittance to a state of high light transmittance; When the voltage difference of the second electrode layer is greater than a certain value, the color-changing layer will change from an opaque state to a transparent state, or the color-changing layer will change from a low light transmittance state to a high light transmittance state. Then, the light transmittance of the OLED display panel can be changed through the change of the light transmittance of the color-changing layer when it is displayed or not, so that when the OLED display panel is in a non-display state, the light transmittance of the OLED display panel can be reduced by the color-changing layer. Avoid the reflection of external light on the quantum dot layer, and when the OLED display panel is in the display state, the color-changing layer normally transmits light, so that the OLED display panel can display normally, and avoids the color filter layer reducing the light transmittance of the OLED display panel. power consumption of the OLED display panel.

Aiming at the technical problem that the light control layer is arranged on the black matrix layer, the thickness of the OLED display panel is relatively large. In an embodiment, as shown in FIG. 1 , the OLED display panel 1 further includes a black matrix layer 14 , the quantum dot layers 15 are arranged between the black matrix layers 14 at intervals, and the light control layer 16 It is disposed between the black matrix layers 14 , and the sum of the thickness of the light control layer 16 and the thickness of the quantum dot layer 15 is greater than or equal to the thickness of the black matrix layer 14 . By arranging the light control layer between the black matrix layers, the sum of the thickness of the light control layer and the thickness of the quantum dot layer is greater than or equal to the thickness of the black matrix layer, so that at least part of the light control layer is located within the height range of the black matrix layer, Reducing the thickness of the OLED display panel does not even increase the thickness of the OLED display panel, resulting in a smaller thickness of the OLED display panel.

Specifically, the light control layer is arranged between the black matrix layers, and the sum of the thickness of the light control layer and the thickness of the quantum dot layer is equal to the thickness of the black matrix layer, then when the light control layer and the quantum dot layer are arranged, the light control layer And the quantum dot layer can fill the gap between the black matrix layers to avoid increasing the thickness of the OLED display panel, and the black matrix layer and the light control layer form a flat surface, which is convenient for the preparation of subsequent film layers.

Specifically, if the light control layer is arranged between the black matrix layers, and the sum of the thickness of the light control layer and the thickness of the quantum dot layer is greater than the thickness of the black matrix layer, when the light control layer is arranged, part of the light control layer can be located in the Between the black matrix layers, the thickness of the OLED display panel is reduced. At the same time, in order to enable the quantum dot layer to have a better light conversion effect and ensure the thickness of the quantum dot layer, part of the light control layer is located outside the black matrix layer, so that the The quantum dot layer can convert light, and the light control layer can control the light transmission effect of the OLED display panel.

The above embodiments are described in detail by taking the example that the sum of the thickness of the light control layer and the thickness of the quantum dot layer is greater than or equal to the thickness of the black matrix layer, but the embodiments of the present application are not limited to this, such as the thickness of the light control layer and the thickness of the quantum dots. The thickness of the layer may be smaller than the black matrix layer.

In an embodiment, as shown in FIG. 2 , the light-emitting functional layer 13 includes a light-emitting material layer (eg, the first light-emitting material layer 232 ), and the light-emitting material layer includes a blue light-emitting material, and the OLED display panel 1 A plurality of pixel units are included, and the pixel units include a red quantum dot layer 151 , a green quantum dot layer 152 and a base material layer 153 . By using the blue light-emitting material as the material of the light-emitting material layer, the brightness of the blue light can be higher, and when the quantum dots absorb short wavelengths and emit long wavelengths, the blue light-emitting material excites the quantum dots to emit red and green light. The brightness of red light and green light is sufficient, the attenuation of blue light is relatively slow, and the life of the OLED display device is improved.

Specifically, the red quantum dot layer can be formed by red quantum dots and a substrate wrapping red quantum dots, and the green quantum dot layer can be formed by green quantum dots and a substrate wrapping green quantum dots, so that the substrate and quantum dots can be stably arranged between the black matrix layers. For blue light-emitting pixels, since the light-emitting material layer is a blue light-emitting material, there is no need to use quantum dot excitation. Therefore, in order to ensure the uniformity of the quantum dot layer, a substrate layer can be provided in the area corresponding to the blue light-emitting pixel. The material fills the space of the corresponding area of the blue light-emitting pixel to ensure the uniformity of the quantum dot layer and facilitate the formation of subsequent film layers.

Specifically, for the materials of the substrate and the substrate layer, transparent materials can be selected.

Specifically, as shown in FIG. 2 , the light-emitting functional layer 13 includes a pixel electrode layer 131 , a first light-emitting device layer 132 , a second light-emitting device layer 133 and a common electrode layer 134 , and the first light-emitting device layer 132 includes a first hole transport layer layer 231, first light-emitting material layer 232, first electron transport layer 233, first electron injection layer 234, second light-emitting device layer 133 includes second hole transport layer 235, second light-emitting material layer 235, second electron transport layer 235 layer 237 , second electron injection layer 238 . By using two light-emitting device layers, the brightness of the emitted light is sufficient, so that the brightness of the OLED display panel is high, and the display failure caused by insufficient brightness of the OLED display panel is avoided.

Specifically, the first light-emitting material layer includes a blue light-emitting material, and the second light-emitting material layer includes a blue light-emitting material.

In an embodiment, the light control layer includes a first light control layer and a second light control layer, the first light control layer is disposed on a side of the red quantum dot layer away from the light-emitting functional layer, The second light control layer is disposed on a side of the green quantum dot layer away from the light-emitting functional layer. By arranging the first light control layer on the side of the red quantum dot layer away from the light-emitting functional layer, the first light control layer can reduce the light transmittance when the OLED display panel is in a non-display state, and prevent the external light from irradiating the red The red quantum dots are excited on the quantum dots to emit light; the second light control layer is arranged on the side of the green quantum dot layer away from the light-emitting functional layer, then the second light control layer can reduce the light transmission when the OLED display panel is in a non-display state It can avoid the external light shining on the green quantum dots to excite the green quantum dots to emit light, which can reduce or even eliminate the reflected light of the OLED display panel in the non-display state, and improve the all-black display effect of the OLED display panel.

In an embodiment, the light-emitting functional layer includes a light-emitting material layer, the light-emitting material layer includes a white light-emitting material, the OLED display panel includes a plurality of pixel units, and the pixel units include a red quantum dot layer, a green quantum dot layer, and a Dot layer and blue quantum dot layer. For an OLED display panel using a white light emitting material as the material of the light emitting material layer, the white light can be converted by setting the red quantum dot layer, the green quantum dot layer and the blue quantum dot layer to emit red light, green light and blue light; at the same time, By arranging a light control layer on the light-emitting functional layer, when the OLED display panel is in a non-display state, the light transmittance of the OLED display panel is reduced by the color-changing layer, so as to avoid the reflection of external light on the quantum dot layer. When in the display state, the color-changing layer normally transmits light, so that the OLED display panel can be displayed normally, which prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

In an embodiment, the light control layer includes a third light control layer, a fourth light control layer and a fifth light control layer, and the third light control layer is disposed on the red quantum dot layer away from the light emission one side of the functional layer, the fourth light control layer is arranged on the side of the green quantum dot layer away from the light-emitting functional layer, and the fifth light control layer is arranged at the blue quantum dot layer away from the One side of the light-emitting functional layer. By arranging the third light control layer on the side of the red quantum dot layer away from the light-emitting functional layer, the third light control layer can reduce the light transmittance when the OLED display panel is in a non-display state, and prevent the external light from irradiating the red The red quantum dots are excited on the quantum dots to emit light; if the fourth light control layer is arranged on the side of the green quantum dot layer away from the light-emitting functional layer, the fourth light control layer can reduce light transmission when the OLED display panel is in a non-display state to avoid the external light shining on the green quantum dots to excite the green quantum dots to emit light; if the fifth light control layer is arranged on the side of the blue quantum dot layer away from the light-emitting functional layer, the fifth light control layer can be placed on the OLED display panel. In the non-display state, the light transmittance is reduced to prevent the blue quantum dots from irradiating the blue quantum dots to emit light; thus, the reflected light of the OLED display panel in the non-display state can be reduced or even eliminated, and the OLED display panel can be improved. Full black display effect.

In an embodiment, the first electrode layer and the color changing layer are disposed between the black matrix layers, and the second electrode layer is disposed on a side of the black matrix layer away from the light-emitting functional layer . By arranging the first electrode layer and the color-changing layer between the black matrix layers, the thickness of the OLED display panel is reduced compared to arranging the light control layer directly outside the black matrix layer, and the second electrode layer is arranged on the black matrix layer. The side away from the light-emitting functional layer enables the quantum dot layer to maintain a certain thickness, the quantity of quantum dots can meet the demand, and the brightness of the OLED display panel is sufficient.

Specifically, the above embodiments are described in detail by taking the example that the first electrode layer and the color changing layer are arranged between the black matrix layers, and the second electrode layer is arranged on the side of the black matrix layer away from the light-emitting functional layer. However, the embodiment of the present application is not limited to this. For example, the first electrode layer may be located between the black matrix layers, and the discoloration layer and the second electrode layer may be disposed on the side of the black matrix layer away from the light-emitting functional layer.

In view of the technical problem that the light control layer is arranged between the black matrix layers, the process is complicated, and the performance of the quantum dot layer may be affected. In one embodiment, the OLED display panel further includes a black matrix layer, the quantum dot layer is disposed between the black matrix layers, and the light control layer is disposed on the black matrix layer away from the light-emitting function side of the layer. By arranging the light control layer on the side of the black matrix layer away from the light-emitting functional layer, the light control layer can be directly tiled on the black matrix layer without etching, which reduces the complexity of the process; at the same time, the quantum dot layer is arranged on the black matrix layer. Between the matrix layers, the number of quantum dot layers can meet the requirements, and the light emitted by the luminescent material can be fully converted, so that the brightness of the OLED display panel is sufficient.

In an embodiment, in the first state, the light transmittance of the light control layer is less than 5%, and in the second state, the light transmittance of the light control layer is greater than 60%. By making the light transmittance of the light control layer in the first state less than 5%, when the OLED display panel is in a non-display state, the light transmittance of the OLED display panel is relatively small, and less external light enters the OLED display panel, which is harmful to quantum dots. At the same time, in the second state, the light transmittance of the light control layer is greater than 60%, and the light transmittance of the OLED display panel is higher, then the OLED display panel is in the second state. In the display state, the color-changing layer normally transmits light, so that the OLED display panel can be displayed normally, which prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

Specifically, in the first state, the light transmittance of the light control layer is less than 5%, and in the second state, the light transmittance of the light control layer is greater than 90%, more specifically, in the second state , the light transmittance of the light control layer is greater than 95%. By making the light transmittance of the light control layer larger in the second state, the light control layer can prevent the light control layer from affecting the normal display brightness of the OLED display panel, and avoid increasing the OLED display panel. power consumption.

In one embodiment, the material of the light control layer includes one of a mixture of a viologen material and a polymer material and tungsten oxide. By using viologen materials and polymer materials or tungsten oxide as the material of the color-changing layer, the color-changing layer can be changed under the control of the first electrode and the second electrode, and the light transmittance of the color-changing layer can be changed, thereby changing the OLED display. The light transmittance of the panel makes it possible to reduce the light transmittance of the OLED display panel through the discoloration layer when the OLED display panel is in the non-display state, so as to avoid the reflection of external light on the quantum dot layer, and when the OLED display panel is in the display state, The color-changing layer normally transmits light, so that the OLED display panel can be displayed normally, which prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

In an embodiment, as shown in FIG. 1 , the OLED display panel 1 further includes a cover plate 17 .

Meanwhile, an embodiment of the present application provides an OLED display device, and the OLED display device includes the OLED display panel and the driving chip as described in any one of the foregoing embodiments.

According to the above embodiment, it can be known that:

The embodiments of the present application provide an OLED display panel and an OLED display device; the OLED display panel includes a substrate, a driving circuit layer, a light-emitting functional layer and a quantum dot layer, the driving circuit layer is disposed on one side of the substrate, and the light-emitting functional layer is disposed on one side of the substrate. The side of the driving circuit layer away from the substrate, the quantum dot layer is arranged on the side of the light-emitting functional layer away from the driving circuit layer, the quantum dot layer at least includes a red quantum dot layer and a green quantum dot layer, wherein the display panel also includes a light control layer , the light control layer includes a first electrode layer, a second electrode layer and a color-changing layer located between the first electrode layer and the second electrode layer, and the light transmittance of the color-changing layer in the first state is less than that in the second state. The light rate, the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer is arranged corresponding to at least one of the red quantum dot layer and the green quantum dot layer. In the present application, a light control layer is arranged, and the light control layer is arranged on the side of the quantum dot layer away from the light-emitting functional layer, and the light control layer is arranged corresponding to at least one of the red quantum dot layer and the green quantum dot layer. It includes a first electrode layer, a second electrode layer and a discoloration layer located between the first electrode layer and the second electrode layer, and the light transmittance of the discoloration layer in the first state is smaller than that in the second state, so that in the When the OLED display panel is in the non-display state, the light transmittance of the OLED display panel is reduced by the color-changing layer, so as to avoid the reflection of external light on the quantum dot layer. The normal display of the display panel prevents the color filter layer from reducing the light transmittance of the OLED display panel and reduces the power consumption of the OLED display panel.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

The OLED display panel and the OLED display device provided by the embodiments of the present application have been introduced in detail above, and the principles and implementations of the present application are described with specific examples herein. The descriptions of the above embodiments are only used to help understanding The technical solution of the present application and its core idea; those of ordinary skill in the art should understand that it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements , does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An OLED display panel, comprising:

a substrate;

the driving circuit layer is arranged on one side of the substrate;

the light-emitting functional layer is arranged on one side, far away from the substrate, of the driving circuit layer;

the quantum dot layer is arranged on one side of the light-emitting function layer, which is far away from the drive circuit layer, and at least comprises a red quantum dot layer and a green quantum dot layer;

wherein, OLED display panel still includes the optical control layer, the optical control layer includes first electrode layer, second electrode layer and is located first electrode layer with discoloring layer between the second electrode layer, the luminousness of discoloring layer under the first state is less than luminousness under the second state, the optical control layer set up in the quantum dot layer is kept away from one side of luminous functional layer, just the optical control layer with red quantum dot layer with at least one in the green quantum dot layer corresponds the setting.

2. The OLED display panel of claim 1, further comprising a black matrix layer, wherein the quantum dot layer is disposed between the black matrix layer at intervals, wherein the light control layer is disposed between the black matrix layer, and wherein a sum of a thickness of the light control layer and a thickness of the quantum dot layer is greater than or equal to a thickness of the black matrix layer.

3. The OLED display panel of claim 2, wherein the light emitting functional layer includes a light emitting material layer including a blue light emitting material, the OLED display panel including a plurality of pixel units including a red quantum dot layer, a green quantum dot layer, and a substrate layer.

4. The OLED display panel of claim 3, wherein the optical control layer comprises a first optical control layer disposed on a side of the red quantum dot layer remote from the light-emitting functional layer and a second optical control layer disposed on a side of the green quantum dot layer remote from the light-emitting functional layer.

5. The OLED display panel of claim 2, wherein the light emitting functional layer comprises a layer of light emitting material including a white light emitting material, the OLED display panel including a plurality of pixel cells including a red quantum dot layer, a green quantum dot layer, and a blue quantum dot layer.

6. The OLED display panel of claim 5, wherein the optical control layers include a third optical control layer disposed on a side of the red quantum dot layer remote from the light-emitting functional layer, a fourth optical control layer disposed on a side of the green quantum dot layer remote from the light-emitting functional layer, and a fifth optical control layer disposed on a side of the blue quantum dot layer remote from the light-emitting functional layer.

7. The OLED display panel according to claim 2, wherein the first electrode layer and the color-changing layer are disposed between the black matrix layers, and the second electrode layer is disposed on a side of the black matrix layers away from the light-emitting function layer.

8. The OLED display panel of claim 1, further comprising a black matrix layer, the quantum dot layer disposed between the black matrix layers, the light control layer disposed on a side of the black matrix layer away from the light-emitting functional layer.

9. The OLED display panel of claim 1, wherein the material of the light control layer includes one of a mixture of a viologen-based material and a polymer material and tungsten oxide.

10. An OLED display device comprising the OLED display panel according to any one of claims 1 to 9 and a driving chip.

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