CN117479588A - OLED display panel and OLED display device - Google Patents

Abstract

The application provides an OLED display panel and an OLED display device; the OLED display panel is characterized in that the light control structure is arranged between the light emitting layer and the flat layer, the light control structure comprises the reflecting structure and the micro lens structure, the projection of the reflecting structure on the substrate coincides with the projection of the pixel definition layer on the substrate, the projection of the micro lens structure on the substrate coincides with the projection of the light emitting material layer on the substrate, the light control structure can reflect light rays with large angles emitted by the sub-pixels through the reflecting structure, the light rays with small angles emitted by the sub-pixels are converged through the micro lens structure, meanwhile, the contact surface of the micro lens structure and the flat layer is a curved surface, the refractive index of the micro lens structure is larger than that of the flat layer, the light rays are prevented from being totally reflected between the flat layer and other film layers, the light rays with various angles are prevented from being scattered to two sides to cause light loss, and crosstalk between adjacent sub-pixels can be avoided.

Description

OLED display panel and OLED display device

Technical Field

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

Background

Organic Light-Emitting Diode (OLED) display devices are widely used in various fields because they are Light, wide viewing angle, fast in response, low temperature resistant, and high in luminous efficiency, and can be used to produce curved flexible display screens. In the working process of the OLED display device, partial light cannot reach human eyes due to the scattering effect of the light, the light emitting efficiency of the OLED display device is low, and due to the fact that the luminous colors of the adjacent sub-pixels are different, when the light is scattered to the adjacent sub-pixels, optical crosstalk can be caused to the adjacent sub-pixels, and the display effect is affected.

Therefore, the existing display device has the technical problem that the light of the sub-pixels is scattered to two sides, so that the light-emitting efficiency of the OLED display device is low.

Disclosure of Invention

The embodiment of the application provides an OLED display panel and an OLED display device, which are used for relieving the technical problem that the light-emitting efficiency of an OLED display device is lower due to the fact that the light of sub-pixels is scattered to two sides of an existing display device.

The embodiment of the application provides an OLED display panel, which comprises:

a substrate;

the light-emitting layer is arranged on one side of the substrate and comprises a pixel definition layer and a light-emitting material layer, and the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer;

the flat layer is arranged on one side of the light-emitting layer, which is far away from the substrate;

the OLED display panel further comprises a light control structure, the light control structure is arranged between the light emitting layer and the flat layer, the light control structure comprises a reflecting structure and a micro lens structure, the projection of the reflecting structure on the substrate coincides with the projection of the pixel definition layer on the substrate, the projection of the micro lens structure on the substrate coincides with the projection of the light emitting material layer on the substrate, the contact surface of the micro lens structure and the flat layer is a curved surface, and the refractive index of the micro lens structure is larger than that of the flat layer.

In some embodiments, the OLED display panel further includes an encapsulation layer disposed between the light emitting layer and the planarization layer, the light control structure is disposed between the encapsulation layer and the planarization layer, and the light control structure is in direct contact with the encapsulation layer.

In some embodiments, the reflective structure includes a substrate layer in direct contact with the encapsulation layer, and a metal layer disposed on a side of the substrate layer remote from the encapsulation layer, the metal layer covering at least a side of the substrate layer.

In some embodiments, the cross-sectional shape of the reflective structure includes a trapezoid, and a width of a side of the reflective structure adjacent to the light emitting layer is greater than a width of a side of the reflective structure adjacent to the planar layer.

In some embodiments, the refractive index of the microlens structure ranges from 1.60 to 1.65.

In some embodiments, the OLED display panel further includes a color film layer and an encapsulation layer, the encapsulation layer is disposed between the light emitting layer and the flat layer, the color film layer is disposed on a side of the encapsulation layer away from the light emitting layer, and the light control structure is disposed on a side of the color film layer away from the encapsulation layer.

In some embodiments, the color film layer includes a first color resistor, a second color resistor, and a third color resistor, where the first color resistor, the second color resistor, and the third color resistor are disposed in contact with each other in a region corresponding to the pixel defining layer, and the reflective structure is disposed at least in a region where adjacent color resistors are in contact.

In some embodiments, the projection of the reflective structure onto the substrate is within the projection of the pixel defining layer onto the substrate, the width of the projection of the microlens structure onto the substrate is greater than or equal to the width of the projection of the luminescent material layer onto the substrate, and the reflective structure is spaced from the microlens structure.

In some embodiments, the reflective structure is spaced from the microlens structure by a distance ranging from 0.5 microns to 1.5 microns.

Meanwhile, an embodiment of the present application provides an OLED display device, which includes the OLED display panel and the electronic element described in any one of the above embodiments.

The beneficial effects are that: the application provides an OLED display panel and an OLED display device; the OLED display panel comprises a substrate, a light-emitting layer and a flat layer, wherein the light-emitting layer is arranged on one side of the substrate, the light-emitting layer comprises a pixel definition layer and a light-emitting material layer, the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer, the flat layer is arranged on one side of the light-emitting layer far away from the substrate, the OLED display panel further comprises a light-operated structure, the light-operated structure is arranged between the light-emitting layer and the flat layer, the light-operated structure comprises a reflecting structure and a micro-lens structure, the projection of the reflecting structure on the substrate is overlapped with the projection of the pixel definition layer on the substrate, the projection of the micro-lens structure on the substrate is overlapped with the projection of the light-emitting material layer on the substrate, the contact surface of the micro-lens structure and the flat layer is a curved surface, and the refractive index of the micro-lens structure is larger than that of the flat layer. According to the light control structure, the light control structure comprises the reflecting structure and the micro lens structure, the projection of the reflecting structure on the substrate coincides with the projection of the pixel definition layer on the substrate, the projection of the micro lens structure on the substrate coincides with the projection of the light emitting material layer on the substrate, the light control structure can reflect light rays with large angles emitted by the sub-pixels through the reflecting structure, the light rays with small angles emitted by the sub-pixels are converged through the micro lens structure, meanwhile, the contact surface of the micro lens structure and the flat layer is a curved surface, the refractive index of the micro lens structure is larger than that of the flat layer, total reflection of the light rays between the flat layer and other film layers is avoided, light rays with various angles are prevented from being scattered to two sides to cause light loss, and crosstalk between adjacent sub-pixels can be avoided.

Drawings

Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a first schematic diagram of an OLED display panel according to an embodiment of the present application.

Fig. 2 is a second schematic diagram of an OLED display panel according to an embodiment of the present application.

Fig. 3 is a first schematic diagram of an OLED display panel corresponding to each step of the method for manufacturing an OLED display panel according to the embodiment of the present application.

Fig. 4 is a second schematic diagram of an OLED display panel corresponding to each step of the method for manufacturing an OLED display panel according to the embodiment of the present application.

Fig. 5 is a third schematic diagram of an OLED display panel corresponding to each step of the method for manufacturing an OLED display panel according to the embodiment of the present application.

Fig. 6 is a schematic diagram of an OLED display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

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

According to the embodiment of the application, the technical problem that the luminous efficiency of the OLED display device is low due to the fact that the light of the sub-pixels is scattered to two sides of the existing display device is solved, and the OLED display panel and the OLED display device are provided for relieving the technical problem.

As shown in fig. 1, an embodiment of the present application provides an OLED display panel, the OLED display panel 1 including:

a substrate 11;

a light emitting layer 13 disposed on one side of the substrate 11, wherein the light emitting layer 13 includes a pixel defining layer 133 and a light emitting material layer 132, and the light emitting material layer 132 is disposed in a pixel region defined by the pixel defining layer 133;

a flat layer 15 provided on a side of the light-emitting layer 13 away from the substrate 11;

the OLED display panel 1 further includes a light control structure 19, where the light control structure 19 is disposed between the light emitting layer 13 and the flat layer 15, the light control structure 19 includes a reflective structure 16 and a microlens structure 17, a projection of the reflective structure 16 on the substrate 11 coincides with a projection of the pixel defining layer 133 on the substrate 11, a projection of the microlens structure 17 on the substrate 11 coincides with a projection of the light emitting material layer 132 on the substrate 11, a contact surface of the microlens structure 17 and the flat layer 15 is a curved surface, and a refractive index of the microlens structure 17 is greater than a refractive index of the flat layer 15.

The embodiment of the application provides an OLED display panel, this OLED display panel is through setting up the photostructural between luminescent layer and flat layer, make photostructural including reflection structure and microlens structure, the projection of reflection structure on the substrate exists the coincidence with the projection of pixel definition layer on the substrate, the projection of microlens structure on the substrate exists the coincidence with the projection of luminescent material layer on the substrate, make photostructural can reflect the light of wide-angle that sub-pixel sent through reflection structure, assemble the light of narrow-angle that sub-pixel sent through microlens structure, simultaneously, microlens structure and flat layer's contact surface are the curved surface, microlens structure's refracting index is greater than flat layer's refracting index, light has been avoided taking place total reflection between flat layer and other membrane layers, the light of each angle has been avoided diverging to both sides and has been led to light loss, and can avoid appearing between the adjacent sub-pixel.

The reflection structure may reflect light, and the microlens structure may collect light.

Specifically, as shown in fig. 1, it can be seen that each sub-pixel in the light-emitting layer 13 of the OLED display panel 1 emits light at different angles, and when the reflective structure 16 and the micro-lens structure 17 are not provided, the light emitted by each sub-pixel diverges to two sides, so that crosstalk occurs between adjacent sub-pixels, and less light is caused on the front surface of the OLED display device, and the light-emitting efficiency of the OLED display device is lower. The OLED display device with the reflecting structure can reflect light rays with large angles emitted by the sub-pixels, but the light rays with small angles cannot irradiate the reflecting structure, so that the light rays with small angles still can be scattered between the adjacent sub-pixels after passing through the plurality of film layers, crosstalk occurs between the adjacent sub-pixels, and the light emitting efficiency of the OLED display device is low. The OLED display device with the micro-lens structure can collect light rays with small angles emitted by the sub-pixels, but the light rays with large angles still can be scattered between adjacent sub-pixels, so that crosstalk occurs between the adjacent sub-pixels, and the light emitting efficiency of the OLED display device is low.

According to the embodiment of the application, the reflection structure 16 and the micro-lens structure 17 are arranged, as shown in fig. 1, the light 18 with a small angle emitted by the light-emitting layer can be collected by the micro-lens structure 17, the light 18 with a large angle emitted by the light-emitting layer can be reflected by the reflection structure 16, so that the light emitted by the sub-pixels is prevented from being scattered to the adjacent sub-pixels or lost, the light emitting efficiency of the OLED display panel is improved, and the crosstalk between the adjacent sub-pixels is reduced. Meanwhile, as shown in fig. 1, it can be seen that the contact surface between the micro lens structure 17 and the flat layer 15 is a curved surface, and the refractive index of the micro lens structure 17 is greater than that of the flat layer 15, so that the incident angle of light can be changed when the light irradiates the flat layer, and the light is refracted, so that the light is prevented from being totally reflected when entering the flat layer, the light loss is reduced, and the light emitting efficiency of the OLED display panel is improved.

Specifically, the planarization layer can planarize the optical control structure, and then when setting up other retes on the planarization layer, the uneven problem that leads to other retes to be difficult to preparation or other structures are difficult to laminating of rete can not appear, improves OLED display panel's roughness, and because the planarization layer can cover on reflection structure and microlens structure, can not increase the thickness of planarization layer, avoids increasing OLED display panel's thickness.

Specifically, as shown in fig. 1, it can be seen that the flat layer 15 covers the reflective structure 16 and the microlens structure 17, so that the upper surface of the flat layer 15 is kept flat, and thus the OLED display panel is relatively flat, and the thickness of the portion of the flat layer 15 corresponding to the reflective structure and the microlens structure is smaller than that of other portions, without increasing the thickness of the OLED display panel.

In one embodiment, as shown in fig. 1, the OLED display panel 1 further includes an encapsulation layer 14, the encapsulation layer 14 is disposed between the light emitting layer 13 and the flat layer 15, the light control structure 19 is disposed between the encapsulation layer 14 and the flat layer 15, and the light control structure 19 is in direct contact with the encapsulation layer 14. Through setting up reflecting structure on the packaging layer for light shines reflecting structure after certain divergence, avoid the light of wide-angle not to diverge and can't shine on reflecting structure and lead to light loss or with adjacent sub-pixel outgoing light crosstalk, set up the microlens structure on the packaging layer, make the microlens structure can assemble the light after diverging, avoid the effect of converging of microlens structure relatively poor to lead to light still to diverge away from wide-angle, avoided the light scattering that sub-pixel sent to adjacent sub-pixel or appear losing, improve OLED display panel's light-emitting efficiency, reduce the crosstalk between the adjacent sub-pixel.

Specifically, compared with the reflective structure directly disposed on the pixel definition layer, light rays can be caused to be not scattered, light rays with a large angle can not be irradiated onto the reflective structure, light rays with a large angle can still be caused to be scattered to the side surface of the OLED display panel or into the corresponding area of the adjacent sub-pixels, as shown in fig. 1, it can be seen that in the embodiment of the application, the reflective structure 16 is disposed on the encapsulation layer 14, so that light rays irradiate onto the reflective structure 16 after being scattered to a certain extent, and the situation that light rays with a large angle can not irradiate onto the reflective structure is avoided. Compared with the fact that the micro-lens structure is directly arranged on the luminescent material layer, the refraction effect of the micro-lens structure on light is possibly poor, the light is scattered after passing through the micro-lens structure, and still possibly scattered in the corresponding area of the adjacent sub-pixels, as shown in fig. 1, it can be seen that in the embodiment of the application, the micro-lens structure 17 is arranged on the packaging layer 14, so that the light irradiates the micro-lens structure 17 after being scattered to a certain extent, and the poor converging effect of the micro-lens structure 17 on light with a small angle is avoided. And through setting up reflecting structure 16 and microlens structure 17 on the coplanar for reflecting structure 16 and microlens structure 17 can cooperate, concentrate the light of each angle that the luminescent layer sent, avoid the light scattering that the subpixel sent to adjacent subpixel or loss appears, improve OLED display panel's light-emitting efficiency, reduce the crosstalk between the adjacent subpixel.

In one embodiment, as shown in fig. 1, the reflective layer 16 includes a substrate 161 and a metal layer 162, the substrate 161 is in direct contact with the encapsulation layer 14, the metal layer 162 is disposed on a side of the substrate 161 away from the encapsulation layer 14, and the metal layer 162 covers at least a side surface of the substrate 161. By forming the substrate layer on the packaging layer and arranging the metal layer on at least the side surface of the substrate layer, the metal layer can reflect light, the light emitted by the sub-pixels is scattered to adjacent sub-pixels or lost, the light emitting efficiency of the OLED display panel is improved, and crosstalk between the adjacent sub-pixels is reduced.

In one embodiment, as shown in fig. 1, the cross-sectional shape of the reflective structure 16 includes a trapezoid shape, and the width of the side of the reflective structure 16 near the light emitting layer 13 is greater than the width of the side of the reflective structure 16 near the flat layer 15. The cross section of the reflecting structure is trapezoidal, and the width of one side of the reflecting structure, which is close to the light emitting layer, is larger than the width of one side of the reflecting structure, which is close to the flat layer, so that the side surface of the reflecting structure can reflect light rays emitted by the sub-pixels, and crosstalk between adjacent sub-pixels is avoided.

In one embodiment, the pixel defining layer defines a pixel region having a length of 10 microns and a width of 10 microns.

Specifically, as shown in fig. 1, the metal layer 162 may cover the substrate layer 161, so that the reflective structure may reflect light when the light irradiates the reflective structure.

Specifically, the material of the base material layer includes an organic material.

Specifically, the material of the metal layer includes one of aluminum and silver.

Specifically, the shape of the substrate layer includes a trapezoid, the width of the bottom edge of the substrate layer ranges from 2.5 micrometers to 3.5 micrometers, the thickness of the substrate layer ranges from 2.5 micrometers to 3.5 micrometers, and the width of the top edge of the substrate layer ranges from 1.5 micrometers to 2.5 micrometers. Specifically, the width of the bottom edge of the substrate layer is 3 micrometers, the thickness of the substrate layer is 3 micrometers, and the width of the fixed edge of the substrate layer is 2 micrometers.

Specifically, the thickness of the metal layer ranges from 0.05 microns to 0.15 microns. Specifically, the thickness of the metal layer was 0.1 μm.

In one embodiment, the microlens structure includes a plurality of microprisms arranged in an array, the microprisms being arranged in correspondence with the luminescent material layer.

Specifically, the refractive index of the microlens structure may be made to range from 1.5 to 1.7. Specifically, the refractive index of the microlens structure ranges from 1.60 to 1.65.

Specifically, the shape of each microprism in the microlens structure includes a cone with a diameter ranging from 9.5 microns to 10.5 microns. Specifically, the diameter of the cone ranges from 10 microns.

Specifically, the thickness of the microlens structure ranges from 2.5 microns to 3.5 microns. Specifically, the thickness of the microlens structure was 3 microns.

In one embodiment, the thickness of the reflective structure is greater than or equal to the thickness of the microlens structure.

In one embodiment, the luminescent material layer comprises a red luminescent material, a green luminescent material and a blue luminescent material.

The problem that crosstalk is easy to occur between adjacent sub-pixels due to the fact that a small-sized black matrix cannot be formed in a micro display device. In one embodiment, as shown in fig. 2, the OLED display panel 1 further includes a color film layer 21 and an encapsulation layer 14, the encapsulation layer 14 is disposed between the light emitting layer 13 and the flat layer 15, the color film layer 21 is disposed on a side of the encapsulation layer 14 away from the light emitting layer 13, and the light control structure 19 is disposed on a side of the color film layer 21 away from the encapsulation layer 14. The reflection structure is arranged on one side of the color film layer away from the packaging layer, the micro-lens structure is arranged on one side of the color film layer away from the packaging layer, so that the reflection structure can reflect light rays with large angles emitted by the sub-pixels, meanwhile, the micro-lens structure can converge light rays with small angles emitted by the sub-pixels, light rays are prevented from being scattered to two sides to cause light loss, and crosstalk between adjacent sub-pixels can be avoided.

Specifically, as shown in fig. 2, the reflection structure 16 is disposed on the color film layer, so that when light diverges to two sides, the reflection structure 16 can reflect the light back to the light emitting area corresponding to the sub-pixels, so as to avoid crosstalk between adjacent sub-pixels, and the micro lens structure 17 is disposed on the color film layer, so that the micro lens structure 17 can converge the light, so as to avoid crosstalk between the adjacent sub-pixels.

In one embodiment, as shown in fig. 2, the color film layer 21 includes a first color resistor 211, a second color resistor 212, and a third color resistor 213, where the first color resistor 211, the second color resistor 212, and the third color resistor 213 are disposed in contact with each other in a region corresponding to the pixel defining layer 133, and the reflective structure 16 is disposed at least in a region where adjacent color resistors are in contact with each other. The reflective structure is arranged in the area contacted with the adjacent color resistors, so that the bottom of the reflective structure can shade light rays irradiating the area, the reflective structure is equivalent to the shading layer, and meanwhile, the light rays irradiating the reflective structure can be reflected by the reflective light rays, so that crosstalk between adjacent sub-pixels is avoided.

Specifically, as shown in fig. 2, it can be seen that the first color resistor 211 and the second color resistor 212 are disposed in contact, the second color resistor 212 and the third color resistor 213 are disposed in contact, the first color resistor 211 and the third color resistor 213 are disposed in contact, the partial reflection structure 16 is disposed in a region disposed in contact between the first color resistor 211 and the second color resistor 212, the partial reflection structure 16 is disposed in a region disposed in contact between the second color resistor 212 and the third color resistor 213, so that the reflection structure 16 corresponds to a black matrix between adjacent color resistors, light irradiated to the region is blocked, light crosstalk of adjacent sub-pixels is avoided, and the reflection structure can reflect light irradiated to a side surface of the reflection structure, thereby further avoiding light crosstalk of adjacent sub-pixels.

Specifically, the first color resistor is a red color resistor, the second color resistor is a green color resistor, and the third color resistor is a blue color resistor.

In one embodiment, the luminescent material of the luminescent material layer comprises a white light luminescent material.

Specifically, when the luminescent material of the luminescent material layer is white light luminescent material, the OLED display panel needs to be provided with a color film layer to display pictures of various colors, and in the micro display field, a black matrix patterned in a small size cannot be realized, therefore, adjacent color resistors can only be contacted and arranged, so that crosstalk occurs between adjacent sub-pixels.

Specifically, the OLED display panel includes a plurality of sub-pixels, the length of each sub-pixel is 10 micrometers, the width of each sub-pixel is 10 micrometers, and the pitch of adjacent sub-pixels is 5 micrometers.

In one embodiment, the projection of the reflective structure onto the substrate is within the projection of the pixel defining layer onto the substrate, the width of the projection of the microlens structure onto the substrate is greater than or equal to the width of the projection of the luminescent material layer onto the substrate, and the reflective structure is spaced from the microlens structure. The projection of the reflecting structure on the substrate is located in the projection range of the pixel definition layer on the substrate, forward light emission of the sub-pixels is avoided, the width of the projection of the micro-lens structure on the substrate is larger than or equal to that of the projection of the luminescent material layer on the substrate, the micro-lens structure can converge light rays emitted by the luminescent layer, the crosstalk problem caused by light rays loss or divergence to adjacent sub-pixels is avoided, and the reflecting structure and the micro-lens structure are spaced, so that the light emitting effect of the OLED display panel is improved by matching the reflecting structure and the micro-lens structure.

In particular, the pitch of the reflective structure and the microlens structure ranges from 0.5 micrometers to 1.5 micrometers, and in particular, the pitch of the reflective structure and the microlens structure ranges from 1 micrometer.

In one embodiment, as shown in fig. 1, the light emitting layer 13 further includes a pixel electrode layer 131 and a common electrode layer 134.

In one embodiment, as shown in fig. 1, the OLED display panel 1 further includes a driving circuit layer 12, and the driving circuit layer 12 is disposed between the substrate 11 and the light emitting layer 13.

The foregoing embodiments are described in detail by taking the example that the reflective structure is disposed on the encapsulation layer, the microlens structure is disposed on the encapsulation layer, the reflective structure is disposed on the color film layer, and the microlens structure is disposed on the color film layer, but the embodiments of the present application are not limited thereto, and when the embodiments do not conflict, the embodiments may be combined to solve the corresponding technical problems, for example, when the reflective structure is disposed on the color film layer, and the microlens structure is disposed on the color film layer, the contact surface of the microlens structure and the flat layer is a curved surface, and the refractive index of the microlens structure is greater than that of the flat layer.

Meanwhile, the embodiment of the application provides a preparation method of the OLED display panel, and the preparation method of the OLED display panel is used for preparing the OLED display panel according to any one of the above embodiments.

In one embodiment, the OLED display panel manufacturing method includes:

providing a substrate, and sequentially forming a driving circuit layer, a light-emitting layer and a packaging layer on the substrate; the light-emitting layer comprises a pixel definition layer and a light-emitting material layer, and the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer; the structure of the OLED display panel corresponding to this step is shown in fig. 3 (a);

forming a reflective structure on the encapsulation layer; the projection of the reflecting structure on the substrate is coincident with the projection of the pixel defining layer on the substrate; the structure of the OLED display panel corresponding to this step is shown in (b) of fig. 3;

forming a micro-lens structure and a flat layer on the packaging layer to obtain a light control structure, wherein the projection of the micro-lens structure on the substrate is overlapped with the projection of the luminescent material layer on the substrate; the structure of the OLED display panel corresponding to this step is shown in fig. 1.

Specifically, the step of forming the reflective structure on the encapsulation layer includes: and exposing and developing the packaging layer by adopting an organic material to form a substrate layer, forming a metal material on the substrate layer by adopting physical vapor deposition, and exposing and etching the metal material to form the metal layer.

Specifically, the step of forming the microlens structure and the planarization layer on the encapsulation layer includes:

coating an organic material 31 on the encapsulation layer; the structure of the OLED display panel corresponding to this step is shown in (b) of fig. 4;

forming a patterned structure 32 by exposure and development; the structure of the OLED display panel corresponding to this step is shown in (b) of fig. 4;

forming microlens structures 17 using a thermal reflow technique; the structure of the OLED display panel corresponding to this step is shown in (c) of fig. 4;

forming a flat layer on the encapsulation layer; the structure of the OLED display panel corresponding to this step is shown in fig. 1.

The reflection structure is not shown in fig. 4.

In one embodiment, the OLED display panel manufacturing method includes:

providing a substrate, and sequentially forming a driving circuit layer, a light-emitting layer, a packaging layer and a color film layer on the substrate; the light-emitting layer comprises a pixel definition layer and a light-emitting material layer, and the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer; the structure of the OLED display panel corresponding to this step is shown in fig. 5 (a);

forming a reflecting structure on the color film layer; the projection of the reflecting structure on the substrate is coincident with the projection of the pixel defining layer on the substrate; the structure of the OLED display panel corresponding to this step is shown in (b) of fig. 5;

forming a micro-lens structure and a flat layer on the color film layer, wherein the projection of the micro-lens structure on the substrate is overlapped with the projection of the luminescent material layer on the substrate; the structure of the OLED display panel corresponding to this step is shown in fig. 2.

Meanwhile, as shown in fig. 6, an embodiment of the present application provides an OLED display device including the OLED display panel and the electronic element 41 as described in any one of the above embodiments.

As can be seen from the above embodiments:

the embodiment of the application provides an OLED display panel and an OLED display device; the OLED display panel comprises a substrate, a light-emitting layer and a flat layer, wherein the light-emitting layer is arranged on one side of the substrate, the light-emitting layer comprises a pixel definition layer and a light-emitting material layer, the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer, the flat layer is arranged on one side of the light-emitting layer far away from the substrate, the OLED display panel further comprises a light-operated structure, the light-operated structure is arranged between the light-emitting layer and the flat layer, the light-operated structure comprises a reflecting structure and a micro-lens structure, the projection of the reflecting structure on the substrate is overlapped with the projection of the pixel definition layer on the substrate, the projection of the micro-lens structure on the substrate is overlapped with the projection of the light-emitting material layer on the substrate, the contact surface of the micro-lens structure and the flat layer is a curved surface, and the refractive index of the micro-lens structure is larger than that of the flat layer. According to the light control structure, the light control structure comprises the reflecting structure and the micro lens structure, the projection of the reflecting structure on the substrate coincides with the projection of the pixel definition layer on the substrate, the projection of the micro lens structure on the substrate coincides with the projection of the light emitting material layer on the substrate, the light control structure can reflect light rays with large angles emitted by the sub-pixels through the reflecting structure, the light rays with small angles emitted by the sub-pixels are converged through the micro lens structure, meanwhile, the contact surface of the micro lens structure and the flat layer is a curved surface, the refractive index of the micro lens structure is larger than that of the flat layer, total reflection of the light rays between the flat layer and other film layers is avoided, light rays with various angles are prevented from being scattered to two sides to cause light loss, and crosstalk between adjacent sub-pixels can be avoided.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description has been made in detail on an OLED display panel and an OLED display device provided in the embodiments of the present application, and specific examples are applied herein to illustrate principles and embodiments of the present application, where the above description of the embodiments is only for helping to understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions 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 light-emitting layer is arranged on one side of the substrate and comprises a pixel definition layer and a light-emitting material layer, and the light-emitting material layer is arranged in a pixel area defined by the pixel definition layer;

the flat layer is arranged on one side of the light-emitting layer, which is far away from the substrate;

the OLED display panel further comprises a light control structure, the light control structure is arranged between the light emitting layer and the flat layer, the light control structure comprises a reflecting structure and a micro lens structure, the projection of the reflecting structure on the substrate coincides with the projection of the pixel definition layer on the substrate, the projection of the micro lens structure on the substrate coincides with the projection of the light emitting material layer on the substrate, the contact surface of the micro lens structure and the flat layer is a curved surface, and the refractive index of the micro lens structure is larger than that of the flat layer.

2. The OLED display panel of claim 1, further comprising an encapsulation layer disposed between the light emitting layer and the planar layer, wherein the light control structure is disposed between the encapsulation layer and the planar layer, and wherein the light control structure is in direct contact with the encapsulation layer.

3. The OLED display panel of claim 2, wherein the reflective structure includes a substrate layer in direct contact with the encapsulation layer and a metal layer disposed on a side of the substrate layer remote from the encapsulation layer, the metal layer covering at least a side of the substrate layer.

4. The OLED display panel claimed in claim 3 wherein the cross-sectional shape of the reflective structure comprises a trapezoid, the width of the side of the reflective structure adjacent to the light emitting layer being greater than the width of the side of the reflective structure adjacent to the flat layer.

5. The OLED display panel of claim 1, wherein the microlens structures have a refractive index in the range of 1.60 to 1.65.

6. The OLED display panel of claim 1, further comprising a color film layer and an encapsulation layer, wherein the encapsulation layer is disposed between the light emitting layer and the flat layer, the color film layer is disposed on a side of the encapsulation layer away from the light emitting layer, and the light control structure is disposed on a side of the color film layer away from the encapsulation layer.

7. The OLED display panel claimed in claim 6, wherein the color film layer includes a first color resistor, a second color resistor and a third color resistor, the first color resistor, the second color resistor and the third color resistor are disposed in contact with each other in a region corresponding to the pixel defining layer, and the reflective structure is disposed at least in a region where adjacent color resistors are in contact.

8. The OLED display panel claimed in claim 1 wherein the projection of the reflective structure onto the substrate is within the projection of the pixel defining layer onto the substrate, the width of the projection of the microlens structure onto the substrate is greater than or equal to the width of the projection of the luminescent material layer onto the substrate, and the reflective structure is spaced from the microlens structure.

9. The OLED display panel of claim 8, wherein the reflective structure is spaced from the microlens structure by a distance in the range of 0.5 microns to 1.5 microns.

10. An OLED display device comprising an OLED display panel as claimed in any one of claims 1 to 9 and an electronic component.