CN112151567A - Display panel, display device and preparation method of display panel - Google Patents

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel includes: driving the back plate; the light emitting diode array layer is positioned on the driving back plate and comprises a plurality of light emitting diodes; the retaining wall is positioned between the adjacent light-emitting diodes, and defines a plurality of accommodating parts for accommodating the light-emitting diodes; the packaging layer is arranged on one side, away from the driving back plate, of the light emitting diode array layer and comprises a plurality of packaging units, the packaging units are isolated through black matrixes, and the packaging units are arranged corresponding to the light emitting diodes; wherein, the light scattering particles are distributed in at least one packaging unit. According to the display panel provided by the embodiment of the invention, the screen window effect can be reduced, and the picture display effect is improved.

Description

Display panel, display device and manufacturing method of display panel

technical field

The present invention relates to the field of display technology, and in particular, to a display panel, a display device and a preparation method of the display panel.

Background technique

Micro-Light Emitting Diode (Micro-LED) technology refers to a technology in which a high-density integrated tiny light-emitting diode array is used as a pixel to realize light-emitting display on a backplane. At present, Micro-LED technology has gradually become a research hotspot, and the industry expects high-quality Micro-LED products to enter the market. High-quality Micro-LED products will have a huge impact on existing display products such as Liquid Crystal Display (LCD) and Organic Light-Emitting Diode (OLED) on the market.

In the prior art, when the Micro-LED is applied to a large-size display panel, there is an obvious screen window effect, which seriously affects the display effect of the picture.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a display panel, a display device, and a manufacturing method of the display panel. Wherein, the encapsulation layer in the display panel can uniformly distribute the light emitted by the light emitting diode, thereby increasing the light emitting area, reducing the screen window effect, and improving the screen display effect.

In a first aspect, an embodiment of the present invention provides a display panel, including:

drive backplane;

The light emitting diode array layer is located on the driving backplane, and the light emitting diode array layer includes a plurality of light emitting diodes;

a retaining wall, located between adjacent light-emitting diodes, the retaining wall defines a plurality of accommodating parts, and the accommodating parts are used for accommodating the light-emitting diodes;

The encapsulation layer is arranged on the side of the light emitting diode array layer away from the driving backplane, the encapsulation layer includes a plurality of encapsulation units, each encapsulation unit is isolated by a black matrix, and the encapsulation units are arranged corresponding to the light emitting diodes;

Wherein, light-scattering particles are distributed in at least one encapsulation unit.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the encapsulation layer includes a transparent encapsulation material, and the light-scattering particles are uniformly distributed in the transparent encapsulation material. The astigmatism particles of the encapsulation layer are evenly distributed in the formation of the transparent material, which can further increase the light emitting area and reduce the screen window effect.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the encapsulation layer includes a plurality of red encapsulation units, a plurality of green encapsulation units, and a plurality of blue light-transmitting encapsulation units, and at least some of the red encapsulation units also further A red color filter material is included, and at least some of the green packaging units further include a green color filter material. The red filter material has a high transmittance to red light and can absorb green and blue light; the green filter material has a high transmittance to green light and can absorb red and blue light. The blue light transmission package unit does not contain a filter material to prevent the display panel from appearing bluish. The encapsulation layer containing the filter material can reduce cross-color, thereby improving the color gamut of the display panel and reducing the screen window effect.

And/or, in the red encapsulation unit, the red filter material and the astigmatism particles are mixed and arranged or layered in the thickness direction of the encapsulation layer; in the green encapsulation unit, the green filter material and the astigmatism particles are mixed and arranged or arranged in the thickness direction of the encapsulation layer. Layered settings. Regardless of whether the red filter material and the astigmatism particles of the red package unit and the green package unit are arranged in a mixed manner or in a layered arrangement, the cross color can be reduced, thereby improving the color gamut of the display panel and reducing the screen window effect.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the encapsulation layer includes a plurality of red encapsulation units, a plurality of green encapsulation units, and a plurality of blue light-transmitting encapsulation units, and at least some of the red encapsulation units also further A red light conversion material is included, and at least some of the green packaging units further include a green light conversion material; and/or a light conversion layer is provided between at least some of the packaging units and the light emitting diode array layer. The light conversion material or the light conversion layer can convert the light emitted by the light emitting diode into the light of the target color, so as to realize the color display.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the display panel further includes: a first reflective layer, located on the side of the light-emitting diode away from the driving backplane, and the first reflective layer is used to reflect light and emit light the light emitted by the diode;

Preferably, when the area of the first reflective layer is larger than the area of the side of the light-emitting diode away from the driving backplane, the display panel further includes:

The transparent support layer is located around the light emitting diode and is used for supporting the first reflective layer extending beyond the light emitting diode.

A first reflective layer is arranged on the upper surface of the light-emitting diode to reflect the light emitted upward from the light-emitting diode, so that the light is emitted from the side of the light-emitting diode, preventing the light from vertically incident on the encapsulation layer, which is beneficial to the encapsulation layer to further uniformly distribute the light. The transparent support layer can directly transmit the light emitted by the light-emitting diode, and the first reflective layer extending beyond the light-emitting diode is supported by the transparent support layer to prevent the first reflective layer from falling off when the display panel is shaken vigorously, which is beneficial to the performance of the light-emitting diode. Stable work.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the side of the transparent support layer away from the driving backplane is a roughened surface, and/or the side of the encapsulation layer close to the light-emitting diode array layer is roughened surface.

In the path traveled by the light emitted by the light emitting diode, the roughened surface is arranged, which further disrupts the original path of the light, and can further uniformly distribute the light.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the light emitting diode is a vertical structure light emitting diode, and the first reflective layer is an N electrode or a P electrode of the vertical structure light emitting diode.

When adopting the light emitting diode with the vertical structure, it is only necessary to set the N electrode or the P electrode of the light emitting diode with the vertical structure to be able to reflect the light emitted by the light emitting diode, which simplifies the process, and also achieves that the light emitted by the light emitting diode can be emitted from the light emitting diode from the light emitting diode. The side exits, preventing the light from being vertically incident to the encapsulation layer, which is beneficial to the encapsulation layer to further uniformly distribute the light.

In a possible implementation manner, in the above-mentioned display panel provided by the embodiment of the present invention, the cross section of the accommodating portion perpendicular to the driving backplane is an inverted trapezoid structure; at least part of the surface of the retaining wall facing the accommodating portion is provided with the second reflective layer;

And/or, a third reflective layer is provided on at least part of the surface of the black matrix facing the packaging unit;

and/or, the display panel further includes:

The fourth reflective layer is located between the light emitting diode and the blocking wall, and the fourth reflective layer is located on the driving backplane.

A second reflective layer is arranged on the side wall of the retaining wall to improve the light reflection of the light emitting diode, so that the light emitted by the light emitting diode can finally reach the upper encapsulation layer, thereby improving the utilization rate of light. The black matrix can prevent light crosstalk of each package unit, and the third reflective layer can further disrupt the original path of light, thereby further improving the uniformity of light distribution. The fourth reflective layer is used to reflect the light reaching the upper surface of the driving backplane, which can improve the utilization rate of light.

In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to the first aspect.

In a third aspect, an embodiment of the present invention provides a method for fabricating a display panel, including: providing a driving backplane bound with a light-emitting diode array, the light-emitting diode array includes a plurality of light-emitting diodes, and adjacent light-emitting diodes are arranged between adjacent light-emitting diodes. retaining wall;

A light-transmitting substrate is provided, a patterned black matrix is formed on the light-transmitting substrate, the mixed glue solution of the astigmatism particles and the light-transmitting glue is placed in the groove formed by the black matrix, and the mixed glue solution is cured to form a plurality of packages. The encapsulation layer of the unit;

The encapsulation layer and the light emitting diode array are aligned and bonded in a manner corresponding to the encapsulation unit and the light emitting diode.

According to the display panel provided by the embodiment of the present invention, after the light emitted by the light emitting diode reaches the encapsulation layer, the original path of the light is disrupted by the astigmatism particles in the encapsulation layer, and the encapsulation layer uniformly distributes the light emitted by the light emitting diode, thereby increasing the light output area, reduce the screen window effect, and improve the screen display effect. Moreover, according to the display panel provided by the embodiment of the present invention, there is no need to add additional components to the display panel, and it is only necessary to mix light-scattering particles into the encapsulation layer of the display panel, which can reduce the screen window effect with a simple and easy-to-operate process Effect.

Description of drawings

The accompanying drawings required in the embodiments of the present invention will be briefly introduced below. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

3 is a schematic structural diagram of still another display panel according to an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present invention.

Description of reference numbers:

10-drive backplane; 20-light-emitting diode; 201-red light-emitting diode; 202-green light-emitting diode; 203-blue light-emitting diode; 30-blocking wall; 31-second reflection layer; 32-fourth reflection layer;

40-encapsulation layer; 41-encapsulation unit; 411-red light-encapsulation unit; 412-green light-encapsulation unit; 413-blue light transmission encapsulation unit; 44-scattering particles;

50-black matrix; 51-third reflective layer; 60-first reflective layer; 70-transparent support layer; 80-transparent substrate.

Detailed ways

The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, and are not configured to limit the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element.

It will be understood that, in describing the structure of a component, when a layer or region is referred to as being "on" or "over" another layer or region, it can be directly on the other layer or region, or Other layers or regions are also included between it and another layer, another region. And, if the part is turned over, that layer, one area, will be "below" or "beneath" another layer, another area.

Features and exemplary embodiments of various aspects of the invention are described in detail below. Furthermore, the features, structures or characteristics described below may be combined in any suitable manner in one or more embodiments.

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. As shown in FIG. 1 , a display panel provided by an embodiment of the present invention includes a driving backplane 10 , a light emitting diode array layer located on the driving backplane 10 , and the light emitting diode array layer includes a plurality of light emitting diodes 20 . The blocking wall 30 is located between adjacent light-emitting diodes 20 . The blocking wall 30 defines a plurality of accommodating parts, and the accommodating parts are used for accommodating the light-emitting diodes 20 . The encapsulation layer 40 is disposed on the light-emitting diode array layer on the side away from the driving backplane 10. The encapsulation layer 40 includes a plurality of encapsulation units 41. Each encapsulation unit 41 is isolated by the black matrix 50. The encapsulation units 41 are arranged corresponding to the light-emitting diodes 20. Wherein, light-scattering particles 44 are distributed in at least one encapsulation unit 41 .

According to the display panel provided by the embodiment of the present invention, after the light emitted by the light-emitting diode reaches the encapsulation layer, the original path of the light is disrupted by the astigmatism particles in the encapsulation layer, and the light from the encapsulation layer changes from a point-like distribution to a planar distribution, Thereby, the light-emitting area is increased, the screen window effect is greatly reduced, and the screen display effect is improved. Further, according to the display panel provided by the embodiment of the present invention, there is no need to add additional components to the display panel, and only astigmatism particles need to be mixed into the encapsulation layer of the display panel, which can reduce the screen window effect in a simple and easy-to-operate process. Effect.

In some embodiments, the encapsulation layer 40 includes a transparent encapsulation material, and the light-scattering particles 44 are uniformly distributed in the transparent encapsulation material. For example, the encapsulation layer 40 uses a transparent encapsulation material as a matrix, and distributes the light-scattering particles 44 uniformly in the matrix. Optionally, the transparent encapsulation material is light-transmitting glue, and the transparent encapsulation material includes one or more of epoxy resin, polycarbonate, polymethyl methacrylate, silicone, and the like.

In some embodiments, the driving backplane 10 includes a driving circuit for driving the corresponding light-emitting diodes to emit light. The light-emitting diodes can be Micro-LEDs. Micro-LEDs have the advantages of low power consumption, high brightness, long life, and fast response time, so that display panels with Micro-LEDs have good display performance. For the Micro-LED, the driving circuit includes at least a thin film transistor, and the Micro-LED is electrically connected to the thin film transistor.

In some embodiments, the light emitting diode array layer includes a plurality of red light emitting diodes 201 , a plurality of green light emitting diodes 202 and a plurality of blue light emitting diodes 203 to form sub-pixels of different colors of the display panel, and the corresponding encapsulation layer 40 has the same The plurality of red light emitting diodes 201 , the plurality of green light emitting diodes 202 and the plurality of blue light emitting diodes 203 correspond to the plurality of red packaging units 411 , the plurality of green packaging units 412 and the plurality of blue light transmitting packaging units 413 respectively. The multiple red encapsulation units 411 , the multiple green encapsulation units 412 and the multiple blue light transmissive encapsulation units 413 of the encapsulation layer 40 here are based on a transparent encapsulation material, and the astigmatism particles 44 are uniformly distributed in the base. Optionally, the transparent encapsulation material is light-transmitting glue, and the transparent encapsulation material includes one or more of epoxy resin, polycarbonate, polymethyl methacrylate, silicone, and the like.

In some embodiments, as shown in FIG. 2 , the light-emitting diode array layer includes a plurality of red light-emitting diodes 201 , a plurality of green light-emitting diodes 202 and a plurality of blue light-emitting diodes 203 to form sub-pixels of different colors of the display panel, corresponding to The encapsulation layer 40 has a plurality of red packaging units 411, a plurality of green packaging units 412, and a plurality of blue light transmitting Package unit 413 . The red encapsulation unit 411 further includes a red filter material, and the green encapsulation unit 412 further includes a green filter material. In some embodiments, the red encapsulation units 411 , the green encapsulation units 412 and the blue transmissive encapsulation units 413 in the encapsulation layer 40 may correspond to the red light emitting diodes 201 , the green light emitting diodes 202 and the A plurality of blue light emitting diodes 203 , for example, one red packaging unit 411 corresponds to two red light emitting diodes 201 , and the corresponding relationship can be adjusted according to the actual situation, which is not limited here.

The red filter material has a high transmittance to red light and can absorb green and blue light; the green filter material has a high transmittance to green light and can absorb red and blue light. The blue light transmission package unit does not contain a filter material to prevent the display panel from appearing bluish. The encapsulation layer containing the filter material can reduce cross-color, thereby improving the color gamut of the display panel and reducing the screen window effect.

In some embodiments, the red color filter material and the light-scattering particles 44 of the red package unit 411 are mixed. For example, the red color filter material and the light-scattering particles 44 are mixed and cured to form the red package unit 411 . Alternatively, the red filter material and the light-scattering particles 44 of the red encapsulation unit 411 are arranged in layers in the thickness direction of the encapsulation layer 40. For example, the red encapsulation unit 411 includes two layers in the thickness direction of the encapsulation layer 40, and the red filter material is located in the thickness direction of the encapsulation layer 40. In the first layer, the astigmatism particles 44 are located in the second layer above the first layer; for another example, the red encapsulation unit 411 includes multiple layers in the thickness direction of the encapsulation layer, and the red filter material and the astigmatism particles 44 are in the thickness direction of the encapsulation layer 40 . The upper layer is set, that is, a layer of red filter material, a layer of astigmatism particles, a layer of red filter material, and so on. It should be understood that, in the layered arrangement, the astigmatism particles may be mixed with the packaging material to form a layer, and the red filter material may be a red filter film layer.

In some embodiments, the green filter material and the light-scattering particles 44 of the green encapsulation unit 412 are mixed. For example, the green filter material and the light-scattering particles 44 are mixed and cured to form the green encapsulation unit 412 . Alternatively, the green filter material and the light-scattering particles 44 of the green encapsulation unit 412 are arranged in layers in the thickness direction of the encapsulation layer. For example, the green encapsulation unit 411 includes two layers in the thickness direction of the encapsulation layer 40, and the green filter material is located in the first layer. The layer and the light-scattering particles 44 are located in the second layer above the first layer; for another example, the green encapsulation unit 412 includes multiple layers in the thickness direction of the encapsulation layer 40 , and the green filter material and the light-scattering particles are stacked in the thickness direction of the encapsulation layer 40 . , that is, a layer of green filter material, a layer of astigmatism particles, a layer of green filter material, and so on. It should be understood that when layered, the astigmatism particles can be mixed with the transparent glue to form a layer, and the green filter material can be a green filter film layer.

Regardless of whether the red filter material and the astigmatism particles of the red package unit and the green package unit are arranged in a mixed manner or in a layered arrangement, the cross color can be reduced, thereby improving the color gamut of the display panel and reducing the screen window effect.

In some embodiments, the light emitting diode array layer includes only a plurality of blue light emitting diodes, and the corresponding packaging layer 40 has a plurality of red packaging units 411, a plurality of green packaging units 412, and a plurality of blue transparent light emitting diodes corresponding to the plurality of blue light emitting diodes through the packaging unit 413 . The red packaging unit 411 further includes a red light conversion material, the green packaging unit 412 further includes a green light conversion material, and the blue light transmission packaging unit 413 does not include the light conversion material. A plurality of red packaging units 411, a plurality of green packaging units 412, and a plurality of blue light-transmitting packaging units 413 constitute sub-pixels of different colors of the display panel. Colorized display of the display panel.

In still other embodiments, the light emitting diode array layer includes only a plurality of blue light emitting diodes, or only a plurality of ultraviolet light emitting diodes, or a plurality of blue light emitting diodes and a plurality of ultraviolet light emitting diodes. A light conversion layer may be disposed between the light emitting diode array layer and at least part of the encapsulation unit, and the light conversion layer is formed of a light conversion material, such as quantum dots or phosphors. The light conversion material can convert the light emitted by the light emitting diode into the light of the target color, so as to realize the color display.

The present application does not limit the arrangement of the light emitting diodes. For example, for three primary color light-emitting diodes, one red light-emitting diode 201, one green light-emitting diode 202, and one blue light-emitting diode 203 can be used as repeating units, and a plurality of repeating units are repeatedly arranged on the driving backplane 10 according to a predetermined rule to form light-emitting diode array. The repeating units may also include other combinations to enable the display panel to have a higher resolution.

In some embodiments, each encapsulation unit corresponds to at least one light emitting diode, for example, the encapsulation units and the light emitting diodes are arranged in a one-to-one correspondence. Preferably, the number of light-emitting diodes corresponding to each packaging unit is the same, and the present invention does not limit the specific number of light-emitting diodes corresponding to the packaging unit. In addition, the plurality of light emitting diodes are arranged in a positive matrix, and the number of rows and columns of the light emitting diodes can be specifically set according to the actual situation. Correspondingly, the multiple encapsulation units of the encapsulation layer are also arranged in a positive matrix.

FIG. 3 is a schematic structural diagram of still another display panel according to an embodiment of the present invention. As shown in FIG. 3 , the display panel further includes a first reflective layer 60 located on the side of the light emitting diode 20 away from the driving backplane 10 , and the first reflective layer 60 is used to reflect the light emitted by the light emitting diode 20 . The first reflective layer 60 may be disposed on at least a part of the light emitting diode 20 on the side away from the driving backplane 10 .

The first reflective layer 60 may be a structure whose surface is a horizontal plane, or a structure whose surface is a curved surface, which is not limited in this application.

A first reflective layer is arranged on the upper surface of the light-emitting diode to reflect the light emitted upward from the light-emitting diode, so that the light is emitted from the side of the light-emitting diode, preventing the light from vertically incident on the encapsulation layer, which is beneficial to the encapsulation layer to further uniformly distribute the light.

In some embodiments, the area of the first reflective layer 60 is not smaller than the area of the side of the light emitting diode 20 away from the driving backplane 10 . Continuing to refer to FIG. 3 , when the area of the first reflective layer 60 is larger than the area of the side of the light-emitting diode 20 away from the driving backplane 10 , the display panel may further include a transparent support layer 70 located around the light-emitting diode 20 for supporting the light-emitting diode The first reflective layer 60 outside the diode 20 .

The transparent support layer 70 can directly transmit the light emitted by the light emitting diode 20, and the transparent support layer 70 supports the first reflective layer 60 extending beyond the light emitting diode 20 to prevent the first reflective layer 60 from falling off when the display panel is shaken vigorously , which is beneficial to the stable operation of the light-emitting diode 20 .

In some embodiments, the side of the transparent support layer 70 away from the driving backplane 10 is a roughened surface, and/or the side of the encapsulation layer 40 close to the light emitting diode array layer is a roughened surface. A roughened surface can be understood as a rough surface, and the surface can be treated with a mechanical method or a chemical method to obtain a microscopic rough structure on the surface to form a roughened surface, which is not limited in the present invention.

In the path traveled by the light emitted by the light emitting diode, the roughened surface is arranged, which further disrupts the original path of the light, and can further uniformly distribute the light.

In some embodiments, at least some of the light emitting diodes 20 are vertical structure light emitting diodes 20 , the N electrode and the P electrode of the vertical structure light emitting diode 20 are located on both sides of the light emitting layer of the light emitting diode 20 , and the first reflective layer 60 can be The N electrode or the P electrode of the vertical structure light emitting diode 20 . In this way, it is only necessary to set the N electrode or P electrode of the light emitting diode 20 in a vertical structure to be able to reflect the light emitted by the light emitting diode 20 , which simplifies the process and also achieves that the light emitted by the light emitting diode 20 can escape from the light emitting diode 20 . The side exit prevents the light from being vertically incident on the encapsulation layer 40 , which is beneficial to the effect of the encapsulation layer 40 further uniformly distributing the light. In addition, the N electrode or P electrode of the vertical structure light emitting diode 20 covers the entire surface thereof, and the contact area is large, which is beneficial to reduce the voltage of the light emitting diode 20 and improve the efficiency of the light emitting diode 20 .

In some embodiments, with continued reference to FIG. 3 , the blocking wall 30 defines a plurality of accommodating portions, and the cross-section of the accommodating portions perpendicular to the driving backplane 10 is an inverted trapezoidal structure. The depth of the receiving portion may be higher than the thickness of the light emitting diode 20 . The side wall of the retaining wall 30 has a second reflective layer 31 on at least a part of the surface facing the accommodating portion. The material of the retaining wall 40 may be photoresist, such as SU-8. The second reflective layer 31 on the sidewall of the retaining wall 40 may be formed of metal, eg, Al, Ag, or the like.

The blocking walls 30 are arranged between adjacent light emitting diodes 20 to prevent crosstalk of light emitted by the light emitting diodes 20 . The second reflective layer 31 is arranged on the sidewall of the blocking wall 30 to improve the light reflection of the light emitting diode 20, so that the light emitted by the light emitting diode 20 can finally reach the encapsulation layer 40 above, thereby improving the utilization rate of light.

In some embodiments, with continued reference to FIG. 3 , a third reflective layer 51 is formed on at least part of the surface of the black matrix 40 facing the package unit. The black matrix 50 can prevent the light crosstalk of each package unit, and the third reflective layer 51 can further disrupt the original path of the light, thereby further improving the uniformity of the light distribution.

In some embodiments, referring to FIG. 3 , the bottom area of the accommodating portion defined by the blocking wall 30 is larger than the area occupied by the light-emitting diodes, and the display panel further includes a fourth reflective layer 32 located between the light-emitting diodes 20 and the blocking wall 30 . , and the fourth reflective layer 32 is located on the driving backplane 10 . The fourth reflective layer 32 is used to reflect the light reaching the upper surface of the driving backplane 10, which can improve the utilization rate of light.

The display panel further includes a light-transmitting substrate 80 on the encapsulation layer 40 . The transparent substrate 80 is used to carry the encapsulation layer 40 and the black matrix 50 .

An embodiment of the present invention also provides a display device, including the above-mentioned display panel, the display device can be applied to virtual reality equipment, mobile phones, tablet computers, televisions, monitors, notebook computers, digital photo frames, navigators, wearable watches, Any product or component with display function, such as IoT node. Since the principle of solving the problem of the display device is similar to that of the above-mentioned display panel, the implementation of the display device can refer to the implementation of the above-mentioned display panel, and the repetition will not be repeated.

Referring to FIG. 4 , an embodiment of the present invention further provides a method for fabricating a display panel. FIG. 4 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present invention. As shown in FIG. 4 , the manufacturing method of the display panel according to the embodiment of the present invention includes the following steps:

S10, providing a driving backplane bound with a light-emitting diode array, the light-emitting diode array includes a plurality of light-emitting diodes, and a blocking wall is arranged between adjacent light-emitting diodes;

S20, a light-transmitting substrate is provided, a patterned black matrix is formed on the light-transmitting substrate, the mixed glue solution of the light-scattering particles and the light-transmitting glue is placed in the groove formed by the black matrix, and the mixed glue solution is cured to form a multi-layered glue solution. The encapsulation layer of the encapsulation unit;

S30 , aligning and bonding the packaging layer and the light-emitting diode array in a manner corresponding to the packaging unit and the light-emitting diode.

According to the manufacturing method of the display panel provided by the embodiment of the present invention, after the light emitted from the light emitting diode 20 reaches the encapsulation layer 40, the original path of the light is disrupted by the astigmatic particles 44 in the encapsulation layer 40, and the light from the encapsulation layer 40 is scattered by the The shape distribution is transformed into a planar distribution, thereby increasing the light emitting area, greatly reducing the screen window effect, and improving the screen display effect. In addition, there is no need to add additional mechanisms to the display panel, and only the astigmatism particles 44 need to be mixed into the encapsulation layer 40 of the display panel, which can achieve the effect of reducing the screen window effect in a simple and easy-to-operate process.

Wherein, in S10, the formation sequence of the array of light emitting diodes 20 and the blocking wall 30 is not limited. The way of implantation in S20 can be printing, or spin coating, etc. In S30, glue can be used for lamination.

Further, S10 further includes: forming a first reflective layer 60 on the side of the light emitting diode 20 away from the driving backplane 10; making the cross section of the receiving portion formed by the retaining wall 30 perpendicular to the driving backplane 10 to be an inverted trapezoid structure, A second reflective layer 31 is formed on at least part of the surface of the retaining wall 30 toward the receiving portion; a transparent support layer 70 is formed around the light-emitting diode 20 for supporting the first reflective layer 60 extending beyond the light-emitting diode 20; A fourth reflective layer 32 is formed on the backplane 10 , and the fourth reflective layer 32 is located between the light-emitting diode 20 and the blocking wall 30 .

S20 further includes forming a third reflective layer 51 on at least part of the surface of the black matrix 50 facing the packaging unit 41 . At least a part of the encapsulation unit 41 is provided with a filter material, and the red filter material and the astigmatism particles can be mixed and arranged into one layer to form a red light encapsulation unit 411, or the red filter material and the astigmatism particles can be layered in the thickness direction of the encapsulation layer. set to form a red light packaging unit 411 . The green filter material and the astigmatism particles can be mixed and arranged in one layer to form the green light package unit 412 , or the green filter material and the astigmatism particles can be arranged in layers in the thickness direction of the package layer 40 to form the green light package unit 412 . In addition, at least a part of the encapsulation units 41 is provided with a light conversion material, or a light conversion layer is provided between at least a part of the encapsulation units 41 and the light emitting diode. The specific setting method has been summarized in the foregoing, and will not be repeated here.

In addition, a vertical structure of light emitting diodes 20 may be selected to form an array of light emitting diodes 20 .

It should be understood that relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply a relationship between these entities or operations There is no such actual relationship or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein, for example, can function or be arranged in sequences other than those illustrated or otherwise described herein .

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Accordingly, the present embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and falls within the meaning and equivalents of the claims. All changes within the scope are thus included in the scope of the invention. Also, different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art should be able to understand and implement other variant embodiments of the disclosed embodiments on the basis of studying the drawings, the description and the claims.

Claims (10)

1. A display panel, characterized in that, comprising: drive backplane; a light-emitting diode array layer, located on the driving backplane, the light-emitting diode array layer includes a plurality of light-emitting diodes; a retaining wall, located between adjacent light emitting diodes, the retaining wall defines a plurality of accommodating parts, the accommodating parts are used for accommodating the light emitting diodes; an encapsulation layer, disposed on the side of the light-emitting diode array layer away from the driving backplane, the encapsulation layer includes a plurality of encapsulation units, each of the encapsulation units is isolated by a black matrix, the encapsulation units and the light-emitting diodes corresponding settings; Wherein, light-scattering particles are distributed in at least one of the encapsulation units. 2 . The display panel according to claim 1 , wherein the encapsulation layer comprises a transparent encapsulation material, and the light scattering particles are uniformly distributed in the transparent encapsulation material. 3 . 3 . The display panel according to claim 2 , wherein the encapsulation layer comprises a plurality of red encapsulation units, a plurality of green encapsulation units and a plurality of blue light transmission encapsulation units, and at least some of the red encapsulation units further include: 4 . red filter material, at least some of the green packaging units further include green filter material; And/or, the red filter material and the light-scattering particles in the red encapsulation unit are mixed and arranged or layered in the thickness direction of the encapsulation layer; In the green encapsulation unit, the green filter material and the light-scattering particles are mixedly arranged or arranged in layers in the thickness direction of the encapsulation layer. 4. The display panel according to claim 1, wherein, The encapsulation layer includes a plurality of red encapsulation units, a plurality of green encapsulation units, and a plurality of blue light-transmitting encapsulation units, at least some of the red encapsulation units further include red light conversion materials, and at least some of the green encapsulation units also include green light conversion material; And/or, a light conversion layer is provided between at least part of the encapsulation unit and the light emitting diode array layer. 5. The display panel according to claim 1, wherein the display panel further comprises: a first reflective layer, located on the side of the light emitting diode away from the driving backplane, the first reflective layer is used for reflecting the light emitted by the light emitting diode; Preferably, when the area of the first reflective layer is larger than the area of the side of the light-emitting diode away from the driving backplane, the display panel further includes: A transparent support layer, located around the light-emitting diode, is used for supporting the first reflective layer extending beyond the light-emitting diode. 6 . The display panel according to claim 5 , wherein a side of the transparent support layer away from the driving backplane is a roughened surface, and/or the encapsulation layer is close to the light emitting diode array layer. 7 . one side is the roughened surface. 7 . The display panel according to claim 5 , wherein the light emitting diode is a vertical structure light emitting diode, and the first reflective layer is an N electrode or an N electrode of the vertical structure light emitting diode. 8 . P electrode. 8 . The display panel according to claim 1 , wherein a cross-section of the accommodating portion perpendicular to the driving backplane is an inverted trapezoid structure; and at least a part of the surface of the retaining wall facing the accommodating portion is provided with an inverted trapezoid structure. There is a second reflective layer; And/or, a third reflective layer is provided on at least part of the surface of the black matrix facing the packaging unit; And/or, the display panel further includes: The fourth reflective layer is located between the light emitting diode and the blocking wall, and the fourth reflective layer is located on the driving backplane. 9. A display device, comprising the display panel according to any one of claims 1-8. 10. A method for preparing a display panel, comprising: A driving backplane bound with a light-emitting diode array is provided, the light-emitting diode array includes a plurality of light-emitting diodes, and a blocking wall is arranged between adjacent light-emitting diodes; A light-transmitting substrate is provided, a patterned black matrix is formed on the light-transmitting substrate, the mixed glue solution of the astigmatism particles and the light-transmitting glue is placed in the groove formed by the black matrix, and the mixed glue solution is cured , forming an encapsulation layer with a plurality of encapsulation units; The encapsulation layer and the light emitting diode array are aligned and bonded in a manner corresponding to the encapsulation unit and the light emitting diode.

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