CN214672621U - Display panel and display device - Google Patents
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- CN214672621U CN214672621U CN202022969341.3U CN202022969341U CN214672621U CN 214672621 U CN214672621 U CN 214672621U CN 202022969341 U CN202022969341 U CN 202022969341U CN 214672621 U CN214672621 U CN 214672621U
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Abstract
The present disclosure provides a display panel including: the display panel comprises a first substrate, a light emitting unit array and a light conversion color film array, wherein the light emitting unit array comprises a plurality of light emitting units, the light conversion color film array comprises a plurality of light conversion color films, the light emitting units are used for generating and emitting first color light, the light conversion color film is used for generating other color light under the excitation of the first color light, and the display panel further comprises: the first band-pass filter layer is positioned between the light emitting unit array and the light conversion color film array and/or the second band-pass filter layer is positioned on one side of the light conversion color film array, which is far away from the light emitting unit array; the first band-pass filter layer comprises a first light gathering structure and a first band-pass filter structure positioned on one side of the first light gathering structure, which is far away from the first substrate; the second band-pass filter layer comprises a second light gathering structure and a second band-pass filter structure located on one side, far away from the first substrate, of the second light gathering structure. The embodiment of the disclosure also provides a preparation method of the display panel and a display device.
Description
Technical Field
The present disclosure relates to the field of display, and in particular, to a display panel and a display device.
Background
With the continuous development of display technology, people have higher and higher requirements on the display quality of display devices. The light conversion material is used as a novel luminescent material, and has the advantages of concentrated luminescent spectrum, high color purity, simple and easy adjustment of luminescent color through the size, structure or components of the light conversion material and the like; the light conversion ink is further cured into a film through solution processing, spin coating or ink jet printing to form a light conversion color film, and the light conversion color film is a new generation of luminescent material applied to solid state illumination and full color flat panel display.
The display principle of the light conversion display device is as follows: the light emitting unit generates light and irradiates the light conversion color film, and the light conversion color film is excited to emit other color light, so that color display is realized. However, in practical applications, it is found that the light extraction rate (the ratio of the light intensity of the light emitted from the light conversion color film region to the light intensity of the corresponding light emitting unit) of the conventional light conversion display device in which the light conversion color film region is provided is low.
SUMMERY OF THE UTILITY MODEL
The disclosure aims to at least solve the technical problem that the light conversion efficiency of a light conversion color film is low in the prior art, and provides a display panel, a manufacturing method thereof and a display device.
In a first aspect, an embodiment of the present disclosure provides a display panel, including: the display panel comprises a first substrate, a light emitting unit array and a light conversion color film array, wherein the light emitting unit array is located on one side of the first substrate and comprises a plurality of light emitting units, the light conversion color film array is located on one side, away from the first substrate, of the light emitting unit array and comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit and different light conversion color films correspond to different light emitting units, the light emitting units are used for generating and emitting first color light, the light conversion color films are used for generating other color light under the excitation of the first color light, and the display panel further comprises:
a first bandpass filter layer located between the light emitting cell array and the light conversion color film array, comprising: the first light-gathering structure is arranged on one side, away from the first substrate, of the first light-gathering structure, the first light-gathering structure is used for gathering light, and the first band-pass filter structure is used for transmitting first color light and reflecting other color light; and/or the presence of a gas in the gas,
the second band-pass filter layer is positioned on one side, away from the light emitting unit array, of the light conversion color film array and comprises: the second light-condensing structure is configured to condense light, and the second band-pass filter structure is configured to transmit the other color light and reflect the first color light.
In some embodiments, the first light concentrating structure comprises: the first collimating lenses correspond to the light emitting units one by one.
In some embodiments, further comprising: and the first collimating lens is embedded in the first transparent resin layer.
In some embodiments, the second light concentrating structure comprises: and the second collimating lenses correspond to the light conversion color films one to one.
In some embodiments, further comprising: and the second collimating lens is embedded in the second transparent resin layer.
In some embodiments, the first light concentrating structure comprises: at least two first light-collecting films stacked, wherein a refractive index of a first light-collecting film closer to the first substrate out of the adjacent first light-collecting films is smaller than a refractive index of a first light-collecting film farther from the first substrate;
in some embodiments, the second light concentrating structure comprises: and at least two second light-condensing films stacked on each other, wherein a refractive index of the second light-condensing film closer to the first substrate out of the adjacent second light-condensing films is smaller than a refractive index of the second light-condensing film farther from the first substrate.
In some embodiments, the first band pass filtering structure is a distributed bragg reflector structure;
and/or the second band-pass filtering structure is a distributed Bragg reflection structure.
In some embodiments, the light converting color film array comprises: a first light converting color film emitting a second color light and a second light converting color film emitting a third color light, the other color lights including: the second color light and the third color light;
the first color light is blue light, the second color light is red light, and the third color light is green light.
In some embodiments, the first band-pass filter structure is configured to have a transmittance of 90% or more for light in a wavelength band of 400nm to 550nm and to totally reflect light in a wavelength band of 550nm to 780 nm.
In some embodiments, the second band-pass filter structure is configured to have a transmittance of 90% or more for light in a wavelength band of 480nm to 800nm and to totally reflect light in a wavelength band of 380nm to 480 nm.
In some embodiments, the display panel is divided into a plurality of light emitting areas, and the light emitting areas correspond to the light emitting units one by one;
the display panel further includes: the first band-pass filter layer is positioned between the first packaging layer and the light conversion color film array;
the first pixel defining layer is provided with a plurality of first accommodating holes, the first accommodating holes correspond to the light emergent areas one to one, and the light emitting units are located in the corresponding first accommodating holes.
In some embodiments, the display panel is divided into a plurality of light emitting areas, the light emitting areas correspond to the light emitting units one by one, and the plurality of light emitting areas include: a first light-emitting region for emitting a first color light, a second light-emitting region for emitting a second color light, and a third light-emitting region for emitting a third color light;
the orthographic projection of the second band-pass filter layer on the first substrate covers the second light emitting area and the third light emitting area and does not cover the first light emitting area;
the display panel further includes: the first light conversion color film and the second light conversion color film are located in the corresponding first accommodating holes, and transparent resin patterns are arranged in the first accommodating holes corresponding to the light emitting areas.
In some embodiments, the display panel further comprises: the second packaging layer is positioned on one side, close to the first substrate, of the second pixel defining layer, the color resistance layer is positioned on one side, far away from the first substrate, of the second pixel defining layer, the second substrate is positioned on one side, far away from the first substrate, of the color resistance layer, the frame sealing glue is positioned between the first substrate and the second substrate and is positioned in the peripheral area, and the second band-pass filter layer is positioned between the color resistance layer and the second pixel defining layer;
the color resist layer includes: a black matrix and a plurality of color resists, the plurality of color resists comprising: the color filter comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor corresponds to the first light-emitting area one to one, the second color resistor corresponds to the second light-emitting area one to one, and the third color resistor corresponds to the third light-emitting area one to one.
In some embodiments, the display panel further comprises: the second packaging layer is positioned on one side, away from the first substrate, of the second pixel defining layer, the color resistance layer is positioned on one side, away from the first substrate, of the second packaging layer, the circular polarizer is positioned on one side, away from the first substrate, of the color resistance layer, and the protective film is positioned on one side, away from the first substrate, of the circular polarizer;
the color resist layer includes: a black matrix and a plurality of color resists, the plurality of color resists comprising: the color filter comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor corresponds to the first light-emitting area one to one, the second color resistor corresponds to the second light-emitting area one to one, and the third color resistor corresponds to the third light-emitting area one to one.
In a second aspect, an embodiment of the present disclosure further provides a display device, including: the display panel as provided in the above first aspect.
In a third aspect, an embodiment of the present disclosure further provides a preparation method of a display panel, which may be used to prepare the display panel provided in the first aspect, where the preparation method includes:
preparing a first display substrate, comprising: forming a light emitting cell array on a first substrate, the light emitting cell array including a plurality of light emitting cells for generating and emitting a first color light;
preparing a second display substrate comprising: forming a light conversion color film array on a second substrate, wherein the light conversion color film array comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit, and different light conversion color films correspond to different light emitting units, and the light conversion color films are used for generating other color lights under the excitation of the first color light;
the first display substrate and the second display substrate are subjected to box-to-box fixation, and the light emitting unit array and the light conversion color film array are located between the first substrate and the second substrate;
the method further comprises the following steps of in the process of preparing the second display substrate and after the step of forming the light conversion color film array: forming a first band-pass filter layer on one side of the light conversion color film array, which is far away from the second substrate base plate, wherein the first band-pass filter layer comprises: the first band-pass filter structure is arranged on one side, away from the second substrate, of the first band-pass filter structure, the first light gathering structure is used for gathering light, and the first band-pass filter structure is used for transmitting first color light and reflecting other color light;
and/or during the process of preparing the second display substrate and before the step of forming the light conversion color film array, the method further comprises the following steps: forming a second band-pass filter layer on the second substrate and on one side of the subsequent preparation of the light conversion color film array, wherein the second band-pass filter layer comprises: the second band-pass filtering structure and a second light condensation structure are located on one side, far away from the second substrate, of the second band-pass filtering structure, the second light condensation structure is configured to condense light, and the second band-pass filtering structure is configured to transmit other color light and reflect the first color light.
In a fourth aspect, an embodiment of the present disclosure further provides a method for manufacturing a display panel, which can be used to manufacture the display panel provided in the first aspect, where the method for manufacturing includes:
forming a light emitting cell array on a first substrate, the light emitting cell array including a plurality of light emitting cells for generating and emitting a first color light;
forming a light conversion color film array on one side of the light emitting unit array, which is far away from the first substrate, wherein the light conversion color film array comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit, and different light conversion color films correspond to different light emitting units, and the light conversion color films are used for generating other color lights under the excitation of the first color light;
between the step of forming the light emitting unit array and the step of forming the light conversion color film array, the method further includes: forming a first band-pass filter layer on one side of the light emitting unit array, which is far away from the first substrate base plate, wherein the first band-pass filter layer comprises: the first light-gathering structure is arranged on one side, away from the first substrate, of the first light-gathering structure, the first light-gathering structure is used for gathering light, and the first band-pass filter structure is used for transmitting first color light and reflecting other color light;
and/or after the step of forming the light conversion color film array, further comprising: forming a second band-pass filter layer on one side, far away from the first substrate, of the optical conversion color film array, wherein the second band-pass filter layer comprises: the second light-condensing structure is configured to condense light, and the second band-pass filter structure is configured to transmit the other color light and reflect the first color light.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another display panel provided in the embodiment of the present disclosure;
FIG. 4a is a schematic diagram of a first bandpass filter layer according to an embodiment of the disclosure;
FIG. 4b is a schematic diagram of a second bandpass filter layer according to an embodiment of the disclosure;
FIG. 5a is a schematic diagram of another structure of a first band-pass filter layer according to an embodiment of the disclosure;
FIG. 5b is a schematic diagram of another structure of a second band-pass filter layer according to an embodiment of the disclosure;
fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;
FIGS. 7a to 7d are schematic intermediate structures for fabricating a first display substrate;
FIGS. 8a to 8d are schematic intermediate structures for fabricating a second display substrate;
fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;
FIGS. 10a to 10g are schematic structural diagrams illustrating the preparation of other functional films directly on the first display substrate according to the embodiment of the disclosure;
fig. 11 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure;
fig. 12 is a flowchart of another manufacturing method of a display panel according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present disclosure, a display panel, a method for manufacturing the same, and a display device provided by the present disclosure are described in detail below with reference to the accompanying drawings.
Research shows that the low light extraction rate of the color filter region provided in the quantum dot display device provided by the related art at least includes the following reasons: firstly, when the wide-angle light emitted by the light emitting unit passes through other functional film layers positioned between the light emitting unit and the light conversion color film, the reflectivity is larger, the transmittance is smaller, namely, larger light loss exists in the transmission process; secondly, light emitted by the excited light conversion color film is scattered light (360-degree scattering), and part of light rays cannot be emitted from the display panel; and thirdly, the light conversion efficiency of the light conversion color film is low. Based on the research findings, the embodiment of the disclosure provides a technical scheme for improving the light extraction rate of a light conversion color film region arranged in a quantum dot display device.
Fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present disclosure, and as shown in fig. 1, the display panel is a quantum dot display panel, and includes: the light conversion color film array comprises a first substrate 1, a light emitting unit array and a light conversion color film array, wherein the light emitting unit array is located on one side of the first substrate 1 and comprises a plurality of light emitting units 2, the light conversion color film array is located on one side, away from the first substrate 1, of the light emitting unit array and comprises a plurality of light conversion color films 3, one light conversion color film 3 corresponds to one light emitting unit 2, different light conversion color films 3 correspond to different light emitting units 2, the light emitting units 2 are used for generating and emitting first color light, and the light conversion color film 3 is used for generating other color light under the excitation of the first color light. The wavelength of the first color light is smaller than the wavelengths of the other color lights.
In the embodiment of the present disclosure, the Light Emitting unit 2 includes an Organic Light-Emitting Diode (OLED); the organic light emitting diode includes: the organic functional layer at least comprises an organic light-emitting layer, and certainly, functional film layers such as a hole transport layer, a hole blocking layer, an electron transport layer, an electron blocking layer and the like can be arranged according to actual needs. In general, each light emitting unit 2 is configured with a corresponding driving circuit including a driving transistor, and the driving circuit is electrically connected to the corresponding light emitting unit 2 to drive the light emitting unit 2 to emit light.
In some embodiments, the material of the light-converting colour film 3 comprises a quantum dot material.
Wherein, the display panel still includes: the first band-pass filter layer 4 is located between the light emitting unit array and the light conversion color film array, and includes: the first light-gathering structure 41 is configured to gather light, and the first band-pass filter structure 42 is located on a side of the first light-gathering structure 41 away from the first substrate 1, where the first light-gathering structure 41 is configured to transmit light of a first color and reflect light of other colors.
In the embodiment of the present disclosure, the first color light emitted by the light emitting unit 2 is incident to the first bandpass filter structure 42 at a small angle (an included angle between the light and a normal of a plane where the first substrate 1 is located) after being condensed by the first condensing structure 41, and at this time, most or even all of the first color light may be transmitted through the first bandpass filter structure 42 and emitted to the light conversion color film 3, so that light loss in a light transmission process can be reduced; in addition, the light is condensed by the first light condensing structure 41, and the light transmission effect of the first band-pass filter structure 42 on the first color light can be further improved, which will be described in detail later. The light conversion color film 3 is irradiated by the first color light to excite other color lights and scatter the light, wherein the other color lights back to the light emitting side of the display panel are reflected after being irradiated by the first band-pass filter structure 42, and the reflected light is emitted from the light emitting side of the display panel, so that the light emitting amount of the area where the light conversion color film 3 is located can be increased, and the light extraction rate of the area of the light conversion color film 3 is further increased.
Fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the disclosure, and as shown in fig. 2, unlike the display panel shown in fig. 1, the display panel shown in fig. 2 does not include the first band-pass filter layer 4, but includes the second band-pass filter layer 5. Wherein, the second band-pass filter layer 5 is located the side of the color film array of the optical conversion far away from the array of the light emitting units, and the second band-pass filter layer 5 includes: the second light-condensing structure 51 and the second band-pass filter structure 52 are located on a side of the second light-condensing structure 51 away from the first substrate 1, the second light-condensing structure 51 is configured to condense light, and the second band-pass filter structure 52 is configured to transmit other color light and reflect the first color light.
In the embodiment of the present disclosure, other color lights emitted by the light conversion color film 3 enter the second band-pass filter structure 52 at a small angle after being condensed by the second condensing structure 51, and most or even all of the other color lights can transmit through the second band-pass filter structure 52 and emit to the light conversion color film 3, so that light loss in the light transmission process can be reduced; in addition, the second light gathering structure 51 gathers light, so that the reflection effect of the second band-pass filter structure 52 on the first color light and the light transmission efficiency on other color light can be improved. As will be described in detail later. Meanwhile, a part of the first color light transmits through the light conversion color film 3 and is emitted to the second band-pass filter layer 5, and the first color light emitted to the second band-pass filter layer 5 is emitted to the light conversion color film 3 again after being reflected by the second band-pass filter structure 52, so that the light conversion color film 3 emits other color lights with excitation light, thereby improving the light conversion rate of the light conversion color film 3 and further improving the light extraction rate of the light conversion color film 3 area.
Fig. 3 is a schematic structural diagram of another display panel provided in the embodiment of the disclosure, and as shown in fig. 3, the display panel shown in fig. 3 includes both the first band-pass filter layer 4 in fig. 1 and the second band-pass filter layer 5 in fig. 2. In the embodiment of the present disclosure, by simultaneously providing the first band-pass filter layer 4 and the second band-pass filter layer 5, the light extraction rate in the color filter 3 region of the optical conversion layer can be further improved.
Fig. 4a is a schematic structural diagram of the first bandpass filter layer 4 in an embodiment of the disclosure, and as shown in fig. 4a, in some embodiments, the first bandpass filter structure 42 is a Distributed Bragg Reflector (DBR) structure, that is, the first bandpass filter structure 42 is a structure formed by alternately stacking high refractive index films 421 and 423 (which may be made of nanoscale materials) and low refractive index films 422 and 424 (which may be made of nanoscale materials), and the filtering effect is achieved by interference of light. When the high refractive index films 421 and 423 and the low refractive index films 422 and 424 have a plurality of layers, the refractive indexes of the different high refractive index films 421 and 423 may be the same or different, and the refractive indexes of the different low refractive index films 422 and 424 may be the same or different, and it is only necessary to ensure that the refractive index of each high refractive index film 421 and 423 is greater than that of the low refractive index film 422 and 424 adjacent thereto, and that the refractive index of each low refractive index film 422 and 424 is less than that of the high refractive index film 421 and 423 adjacent thereto.
The thickness d of each film in the distributed Bragg reflection structure meets the following requirements:
q is a positive integer, λ is the center wavelength of the reflection band (also referred to as the filter band), and θ is the light incident angle. Therefore, under the condition that the values of d, q and n are determined, the reflection waveband and the transmission waveband of the distributed bragg reflection structure can be changed for light rays with different incidence angles. In practical applications, it is found that when the angle θ is increased, the reflection band shifts to a short wavelength. That is, when the first bandpass filter structure 42 having the distributed bragg reflection structure is designed based on the wavelength bands of the other color lights as reflection fluctuations, the first bandpass filter structure 42 reflects the incident first color light having a large angle, so that the overall transmittance of the first color light is reduced. To this end, in the embodiment of the disclosure, the first band-pass filter structure 42 is used in combination with the first light-gathering structure 41, and the first color light is processed by light-gathering to make the first color light emitted to the first band-pass filter structure 42 be a small-angle incident light, so as to obtain a first color lightThe filtering of the first color light by the first band-pass filter structure 42 can be reduced to improve the light transmittance of the first color light, which is beneficial to improving the light extraction rate of the light conversion color film 3 region.
Fig. 4b is a schematic structural diagram of the second bandpass filter layer 5 in the embodiment of the disclosure, and as shown in fig. 4b, the second bandpass filter structure 52 has the same structure as the first bandpass filter structure 42, i.e. the second bandpass filter structure 52 is a structure formed by alternately laminating high refractive index thin films 521 and 523 (which may be made of nanoscale materials) and low refractive index thin films 522 and 524 (which may be made of nanoscale materials). Based on the same principle discussed above, in the embodiment of the present disclosure, the second band-pass filter structure 52 and the second light focusing structure 51 are used in combination, and the first color light transmitted through the color optical conversion film 3 and the other color light generated by the color optical conversion film 3 are focused to make the first color light and the other color light emitted to the second band-pass filter structure 52 be incident light at a small angle, so that the reflectivity of the second band-pass filter structure 52 to the first color light and the transmissivity of the second band-pass filter structure 52 to the other color light can be improved, and the light extraction rate of the color optical conversion film 3 region can be improved.
It should be noted that fig. 4a and 4 only exemplarily show a case where the first band-pass filter structure 42 and the second band-pass filter structure 52 include 4 laminated films, which is merely an exemplary case and does not limit the technical solution of the present disclosure.
With continued reference to fig. 4a, in some embodiments, the first light concentrating structure 41 comprises: and a plurality of first collimating lenses, which correspond to the light emitting units 2 one to one. In some embodiments, the display panel further comprises: and the first transparent resin layer 8 is positioned between the light emitting unit array and the light conversion color film array, and the first collimating lens is embedded in the first transparent resin layer 8. In some embodiments, the first collimating lens is a plano-convex lens, the convex surface of which faces the first substrate base plate 1 and the planar surface faces away from the first substrate base plate 1.
With continued reference to fig. 4b, in some embodiments, the second light concentrating structure 51 includes: and the second collimating lenses correspond to the light conversion color film 3 one to one. The display panel further includes: and the second collimating lens is embedded in the second transparent resin layer. In some embodiments, the second collimating lens is a plano-convex lens, the convex surface of which is facing the first substrate base plate 1 and the planar surface is facing away from the first substrate base plate 1.
Fig. 5a is a schematic structural diagram of another structure of the first band-pass filter layer 4 in the embodiment of the disclosure, as shown in fig. 5a, unlike the first light-gathering structure 41 in the first band-pass filter layer 4 shown in fig. 4a that uses a collimating lens, the first light-gathering structure 41 in the first band-pass filter layer 4 shown in fig. 5a uses a thin film laminated structure; specifically, the first light collecting structure 41 includes: at least two first light collecting films 411 and 412 are stacked, and of the adjacent first light collecting films, the refractive index of the first light collecting film 411 closer to the first substrate 1 is smaller than the refractive index of the first light collecting film 412 farther from the first substrate 1, that is, the refractive index of each of the first light collecting films 411 and 412 increases in the order of increasing in the direction away from the first substrate 1. When the light is refracted to the optically denser medium from the optically thinner medium, the refraction angle is smaller than the incident angle under the condition that the incident angle is larger than 0, so that the light condensation effect is realized.
The case where the first light collecting structure 41 includes two layers of the first light collecting films 411 and 412 stacked in fig. 5a is exemplarily illustrated, and this case is merely for exemplary purposes, and does not limit the technical solution of the present disclosure. So as to have a medium refractive index n in contact with the first light-collecting film 411 positioned at the lowermost portion01.5, the refractive index n of the first light-collecting film 411 positioned at the lowermost position11.78, the refractive index n of the uppermost first light-collecting film 4122For example 2.30, for the angle of incidence α0An angle of refraction α of a 50 ° ray of light after being refracted into the first light-collecting film 411 positioned at the lowermost position1Approximately 40 °, and the refraction angle α after being refracted into the uppermost first light-collecting film 4122≈30°。
Fig. 5b is a schematic diagram of another structure of the second band-pass filter layer 5 in the embodiment of the disclosure, and as shown in fig. 5b, similar to the structure of the first light-focusing structure 41 in the first band-pass filter layer 4 shown in fig. 5a, the second light-focusing structure 51 in the second band-pass filter layer 5 shown in fig. 5b includes: at least two second light-collecting films 511 and 512 are stacked, and the refractive index of the second light-collecting film closer to the first substrate 1 among the adjacent second light-collecting films is smaller than the refractive index of the second light-collecting film farther from the first substrate 1, whereby light collection can be achieved by the stacked film structure. Fig. 5b illustrates a case where the second light concentrating structure 51 includes two second light concentrating films 511 and 512 stacked in a stacked manner, which is merely exemplary and does not limit the technical solution of the present disclosure.
Fig. 6 is a schematic structural diagram of another display panel provided in an embodiment of the disclosure, and as shown in fig. 6, the display panel shown in fig. 6 includes a first band-pass filter layer 4 and a second band-pass filter layer 5 at the same time, and the color filter array of the optical converter includes: a first light-converting colour film 3 emitting light of a second colour and a second light-converting colour film 3 emitting light of a third colour, the other colours including light of the second and third colours.
In some embodiments, the first color light is blue light, the second color light is red light, and the third color light is green light. The first light conversion color film 3 is a red light conversion color film 3r, the second light conversion color film 3 is a green light conversion color film 3g, the blue light emitted by the light emitting unit 2 excites the red light conversion color film 3r to emit red light, and the blue light emitted by the light emitting unit 2 excites the green light conversion color film 3g to emit green light. At this time, the light emitting unit 2 may be a blue organic light emitting diode.
Further, in some embodiments, the first band-pass filter structure 42 is configured to have a transmittance of 90% or more for light in a wavelength band of 400nm to 550nm and to totally reflect light in a wavelength band of 550nm to 780 nm. In some embodiments, the second band-pass filter structure 52 is configured to have a transmittance of 90% or more for light in the 480nm to 800nm band and to totally reflect light in the 380nm to 480nm band.
In some embodiments, the display panel is divided into a plurality of light emitting areas, and the light emitting areas correspond to the light emitting units 2 one to one; the display panel further includes: the first substrate base plate 1 is provided with a first pixel defining layer 16 positioned on one side close to the light emitting unit array and a first packaging layer 7 positioned on one side, far away from the first substrate base plate 1, of the first pixel defining layer 16, and the first band-pass filter layer 4 is positioned between the first packaging layer 7 and the light conversion color film array; the first pixel defining layer 16 is provided with a plurality of first accommodating holes, the first accommodating holes correspond to the light emitting areas one by one, and the light emitting units 2 are located in the corresponding first accommodating holes.
In some embodiments, the plurality of light exit regions comprises: a first light-emitting region for emitting a first color light, a second light-emitting region for emitting a second color light, and a third light-emitting region for emitting a third color light; namely, the first light emitting region, the second light emitting region and the third light emitting region are a blue light emitting region, a red light emitting region and a green light emitting region, respectively. The orthographic projection of the second band-pass filter layer 5 on the first substrate 1 covers the second light emitting area and the third light emitting area and does not cover the first light emitting area; the display panel further includes: the second pixel defining layer 10 is located on one side of the light emitting unit array, which is far away from the first substrate 1, a plurality of second accommodating holes are formed in the second pixel defining layer 10, the second accommodating holes correspond to the light emitting areas one to one, the first light conversion color film 3 and the second light conversion color film 3 are both located in the corresponding second accommodating holes, and transparent resin patterns 30b are arranged in the second accommodating holes corresponding to the first light emitting areas.
In some embodiments, the display panel further comprises: the second packaging layer 9 is positioned on one side, close to the first substrate base plate 1, of the second pixel defining layer 10, the color resistance layer 11 is positioned on one side, far away from the first substrate base plate 1, of the second pixel defining layer 10, the second substrate base plate 17 is positioned on one side, far away from the first substrate base plate 1, of the color resistance layer 11, the frame sealing glue 13 is positioned between the first substrate base plate 1 and the second substrate base plate 17 and is positioned in the peripheral area, and the second band-pass filter layer 5 is positioned between the color resistance layer 11 and the second pixel defining layer 10;
the color resist layer 11 includes: a black matrix 18 and a plurality of color resists including: the color filter comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor corresponds to the first light emitting areas one to one, the second color resistor corresponds to the second light emitting areas one to one, and the third color resistor corresponds to the third light emitting areas one to one. That is, the first color resistor is a blue color resistor 12b, the second color resistor is a red color resistor 12r, and the third color resistor is a green color resistor 12 g.
The display panel shown in fig. 6 is a display panel of a pair cassette type, which is obtained by pairing a first display substrate and a second display substrate. The first display substrate includes: a first substrate base plate 1, a driving layer 6, a first pixel defining layer 16, a light emitting cell array and a first encapsulation layer 7; the second display substrate includes: the color filter comprises a second substrate base plate 17, a color resistance layer 11, a second band-pass filter layer 5, a second pixel definition layer 10, a light conversion color film array, a second packaging layer 9 and a first band-pass filter layer 4. The first display substrate and the second display substrate can be fixed to each other through the first transparent resin layer 8, and the first substrate 1 and the second substrate 17 are sealed in the peripheral area through the frame sealing glue 13.
Fig. 7a to 7d are schematic intermediate structures of a first display substrate, and as shown in fig. 7a to 7d, the first display substrate is manufactured as follows: first, a first substrate 1 is provided, and the first substrate 1 may be a rigid glass substrate or a flexible resin substrate. Then, referring to fig. 7a, a driving layer 6 is prepared on the first substrate 1 by a Thin Film Transistor (TFT) Array (Array) process, and the driving layer 6 includes: the driving circuit includes a thin film transistor (including a driving transistor), the thin film transistor may be an Oxide thin film transistor (Oxide) or a Low Temperature Polysilicon (LTPS) thin film transistor, and the specific process belongs to the conventional technology in the art and is not described herein again. Then, referring to fig. 7b, a first pixel defining layer 16 is prepared, the first pixel defining layer 16 may be made of a transparent resin material or a colored resin material, preferably a colored resin material, and more preferably a black resin material, the first pixel defining layer 16 defines a plurality of first accommodating holes, and the first accommodating holes correspond to the light emitting areas one to one; in some embodiments, the size of the first accommodating hole corresponding to the green light exiting region (the cross-sectional area of the light exiting side of the accommodating hole) is equal to or greater than the size of the first accommodating hole corresponding to the red light exiting region, and the size of the first accommodating hole corresponding to the red light exiting region is equal to or greater than the size of the first accommodating hole corresponding to the blue light exiting region. Then, referring to fig. 7c, a light emitting element is prepared in the first accommodating hole, taking the light emitting element as a blue organic light emitting diode as an example, an anode of the blue organic light emitting diode and a drain of the driving transistor share the same layer, and at this time, only an organic functional layer and a cathode capable of emitting blue light need to be prepared in the first accommodating hole; in some embodiments, the anode of the organic light emitting diode is made of a metal material (e.g., molybdenum, aluminum, etc.) such that the anode serves as a reflective electrode and the cathode is made of a transparent conductive material (e.g., indium tin oxide, indium gallium zinc oxide, etc.); in some embodiments, the thickness of the driving layer 6 and the organic light emitting diode is 3um to 4 um. Finally, referring to fig. 7d, a first encapsulation layer 7 is prepared, wherein the first encapsulation layer 7 is a laminated structure formed by alternately arranging inorganic encapsulation films and organic encapsulation films, and the first encapsulation layer 7 is exemplarily a three-layer laminated structure of inorganic encapsulation film-organic encapsulation film-inorganic encapsulation film; the inorganic packaging film can be obtained by depositing silicon oxide and/or silicon nitride material by Chemical Vapor Deposition (CVD), and the thickness is generally 1 um; the organic encapsulation film can be obtained by Ink Jet printing (IJP for short) organic materials, the thickness is generally 6-8 um, and the organic encapsulation film can also play a role in flattening.
Fig. 8a to 8f are schematic intermediate structures of a second display substrate, and as shown in fig. 8a to 8f, the second display substrate is manufactured as follows: first, a second substrate 17 is provided, and the second substrate 17 may be a rigid glass substrate or a flexible resin substrate. Then, referring to fig. 8a, a color resist layer 11 is prepared on the second substrate base plate 17; specifically, a black matrix 18 is prepared, and the thickness is less than or equal to 2 um; respectively preparing color resists with the thickness less than or equal to 3 um; in some embodiments, the color resists include: a blue color resistor 12b, a red color resistor 12r, and a green color resistor 12 g. Then, referring to fig. 8b, a second band-pass filter layer 5 is prepared; specifically, a nanometer-level high-refractive-index resin material and a nanometer-level low-refractive-index resin material are alternately deposited by Plasma Enhanced Chemical Vapor Deposition (PECVD) to form a second band-pass filter structure 52, and then a second light focusing structure 51 is prepared; in the embodiment of the present disclosure, a plurality of second collimating lenses (e.g., plano-convex lenses) may be prepared by exposure and development to prepare the second light condensing structure 51, or a plurality of second light condensing films may be prepared in a stacked manner, and the refractive index of each of the second light condensing films decreases in order in a direction away from the second substrate 17 to prepare the second light condensing structure 51; the second band-pass filter layer 5 completely covers the red light emitting area and the green light emitting area, but does not cover the blue light emitting area. It should be noted that, when the second light focusing structure 51 includes a plurality of second collimating lenses, in order to ensure the preparation of the subsequent film layer, a second transparent resin layer is prepared above the second collimating lenses to achieve planarization, and the second collimating lenses are embedded in the second transparent resin layer. Next, referring to fig. 8c, a second pixel defining layer 10 is prepared, wherein a plurality of second accommodating holes are formed in the second pixel defining layer 10, and the second accommodating holes correspond to the light emitting areas one to one; in some embodiments, a dihedral angle β formed by the sidewall portion of the second pixel defining layer 10 and the bottom plane of the second accommodating hole is in a range of 80 to 120 °, preferably 90 to 110 °, and the thickness of the second pixel defining layer 10 is in a range of 6 to 12 um. In some embodiments, the size of the second accommodating hole corresponding to the green light exit region (the cross-sectional area of the light exit side of the accommodating hole) is equal to or greater than the size of the second accommodating hole corresponding to the red light exit region, and the size of the second accommodating hole corresponding to the red light exit region is equal to or greater than the size of the second accommodating hole corresponding to the blue light exit region. In addition, some isolation dams 19 may be further disposed above the second pixel defining layer 10 enclosing the second receiving hole corresponding to the red light emitting region and the second receiving hole corresponding to the green light emitting region, so as to prevent the green light quantum dot material and the red light quantum dot material from being mixed when the green light conversion color film 3g and the red light conversion color film 3r are subsequently prepared. In addition, a reflective metal layer (not shown) may be disposed on a sidewall surrounding the second receiving hole to increase the light emitting amount. Then, referring to fig. 8d, a red light conversion color film 3r and a green light conversion color film 3g are respectively prepared in a second accommodating hole corresponding to the red light emitting region and a second accommodating hole corresponding to the green light emitting region, and a transparent resin pattern 30b is prepared in a second accommodating hole corresponding to the blue light emitting region; scattering particles are doped in the light conversion color film 3 and the transparent resin pattern 30b, so that the consistency of the visual angles of the light emitting areas is ensured. The thicknesses of the light conversion color film 3 and the transparent resin pattern 30b are 6um to 12um and are similar to the thickness of the second pixel defining layer 10, and the curing temperatures of the resin material in the light conversion color film 3 and the resin material in the transparent resin pattern 30b are less than or equal to 180 ℃. Next, referring to fig. 8e, a second encapsulation layer 9 is prepared; in some embodiments, the refractive index of the second encapsulant layer 9 is in the range of 1.7-2.0, preferably 1.75-1.85; the thickness of the second encapsulation layer 9 is less than 1um, preferably less than 0.5 um. Finally, referring to fig. 8f, a first band-pass filter layer 4 is prepared; specifically, a nanometer-level high-refractive-index resin material and a nanometer-level low-refractive-index resin material are alternately deposited by a plasma enhanced chemical vapor deposition method to form a first band-pass filter structure 42; then preparing a first light-gathering structure 41; in the embodiment of the present disclosure, a plurality of first collimating lenses (e.g., plano-convex lenses) may be prepared by exposure and development to prepare the first light collecting structures 41, or a plurality of first light collecting films may be prepared in a stacked manner, and the refractive index of each first light collecting film decreases in sequence in a direction away from the first substrate 1 to prepare the first light collecting structures 41; wherein the first band pass filter layer 4 completely covers the red light out-going area, the green light out-going area and the blue light out-going area.
The box aligning process of the first display substrate and the second display substrate is as follows: firstly, coating frame sealing glue 13 on the peripheral area of a first display substrate and/or a second display substrate and coating a first transparent resin material on the middle area in a vacuum or nitrogen environment; then, after the two substrates are close to each other, high-precision alignment is carried out and box alignment is realized; and then, curing the frame sealing glue 13 part by adopting an ultraviolet curing process, and thermally curing the first transparent resin material by adopting a low-temperature (less than or equal to 100 ℃) human curing process. The thickness of the frame sealing glue 13 is 15-50 um, preferably 20-40 um, more preferably 20-30 um; the frame sealing glue 13 contains fiber or microsphere filler with controlled particle size and thickness. The first transparent resin material is preferably low-temperature curing resin (the main curing temperature is less than or equal to 100 ℃, preferably less than or equal to 90 ℃), the gas overflow value (outgas) of the first transparent resin material is less than or equal to 100ppm after being cured and baked for 2 hours at 100 ℃, the first transparent resin material forms the first transparent resin layer 8 after being cured, and the thickness of the first transparent resin layer 8 ranges from 5um to 30um, preferably from 10um to 15 um. In addition, in order to avoid total reflection of part of light at the interface between adjacent layers, it is preferable that the refractive index of the first transparent resin layer 8 is equal to or less than the refractive index of the layer in the first light collecting structure 41, which is in contact with the first transparent resin layer 8, and the refractive index of the first transparent resin layer is equal to or more than the refractive index of the layer in the first encapsulant layer 7, which is in contact with the first transparent resin layer 8. Illustratively, the refractive index of the film layer in the first light collecting structure 41 in contact with the first transparent resin layer 8 is n3, and the refractive index of the film layer in the first encapsulant layer 7 in contact with the first transparent resin layer 8 is n4, then the refractive index n5 of the first transparent resin layer 8 satisfies: n4 is not less than n5 is not less than n3, and the specific value can be set according to actual conditions.
It should be noted that, when the first band-pass filter layer 4 exists in the display panel and the first light-gathering structure 41 in the first band-pass filter layer 4 includes the first collimating lens, the first collimating lens is embedded in the first transparent resin layer 8.
Fig. 9 is a schematic structural diagram of another display panel provided in an embodiment of the disclosure, and as shown in fig. 9, unlike the display panel shown in fig. 6 which is a paired box type display panel, the display panel shown in fig. 9 is a non-paired box type display panel; specifically, the color filter array is directly formed on the first display substrate. At this time, the second encapsulation layer 9 is located on the side of the second pixel defining layer 10 away from the first substrate 1, the second band-pass filter layer 5 is located on the side of the second encapsulation layer 9 away from the first substrate 1, and the color resistance layer 11 is located on the side of the second band-pass filter layer 5 away from the first substrate 1.
In practical applications, it is found that in a display panel using the blue light emitting unit 2+ the red/green light optical conversion color film 3g, the amount of blue light emitted from the display panel is large, which easily causes the display screen to be blue overall. In order to solve the problem, a circular polarizer 14 and a protective film 15 are further disposed on the side of the color resist layer 11 away from the first substrate base plate 1, and the protective film 15 is located on the side of the circular polarizer 14 away from the first substrate base plate 1. The circular polarizer 14 is a reflective circular polarizer 14, preferably a reflective circular polarizer 14 with a slightly higher reflectivity in the blue band, to reduce the blue component in the outgoing light. The protective film 15 is a high-transmittance, scratch-resistant coating material to protect the circular polarizer 14.
Fig. 10a to 10g are schematic structural diagrams illustrating a process of directly preparing other functional film layers on the first display substrate according to an embodiment of the disclosure, as shown in fig. 10a to 10g, in an embodiment of the disclosure, the process of directly preparing other functional film layers on the first display substrate is as follows: first, a first display substrate is provided, and the specific preparation process can be referred to the above contents, which are not described herein again. Then, referring to fig. 10a, a first transparent resin layer 8 is prepared on the first display substrate; in order to avoid total reflection of part of light at the interface between adjacent films, it is preferable that the refractive index of the first transparent resin layer 8 is less than or equal to the refractive index of a film in the first light-gathering structure 41, which is in contact with the first transparent resin layer 8, and the refractive index of the first transparent resin layer is greater than or equal to the refractive index of a film in the first encapsulation layer 7, which is in contact with the first transparent resin layer 8; when the first light-gathering structure 41 in the first band-pass filter layer 4 to be prepared subsequently includes the first collimating lens structure, an accommodating groove for accommodating the first collimating lens is prepared on a side of the first transparent resin layer 8 opposite to the substrate through an exposure (e.g., half-tone mask exposure) developing process. For example, if the first collimating lens is a plano-convex lens, the bottom of the accommodating groove is a convex surface; when the first light collecting structure 41 in the first band-pass filter layer 4 to be prepared subsequently is a multilayer first light collecting thin film laminated structure, the accommodating groove does not need to be prepared. Then, referring to fig. 10b, a first band-pass filter layer 4 is prepared; specifically, a first light-gathering structure 41 is prepared, and then a first band-pass filtering structure 42 is prepared; in the embodiment of the present disclosure, a plurality of first collimating lenses (e.g., plano-convex lenses) may be prepared by exposure and development to obtain the first light collecting structure 41, where the first collimating lenses are located in the accommodating grooves of the first transparent resin layer 8; or preparing a plurality of first light-gathering films which are stacked and arranged, wherein the refractive index of each first light-gathering film is increased in sequence in the direction away from the first substrate 1 to prepare a first light-gathering structure 41; the first bandpass filter structure 42 can be formed by alternately depositing the nanoscale high-refractive-index resin material and the nanoscale low-refractive-index resin material in a plasma enhanced chemical vapor deposition manner, and the first bandpass filter structure 42 can also be positioned in the accommodating groove (at this time, the maximum thickness of the first transparent resin layer 8 is greater than or equal to the maximum thickness of the first bandpass filter structure 42); in some embodiments, a surface of the first bandpass filter structure 42 away from the first substrate base plate 1 is flush with a surface of the first transparent resin layer 8 away from the first substrate base plate 1, so as to facilitate preparation of subsequent film layers; wherein the first band pass filter layer 4 completely covers the red light out-going area, the green light out-going area and the blue light out-going area. Next, referring to fig. 10c, the second pixel defining layer 10 is prepared, and the specific preparation process can be referred to the above content, which is not described herein again. Next, referring to fig. 10d, a red light conversion color film 3r and a green light conversion color film 3g are respectively prepared in the second receiving hole corresponding to the red light emitting region and the second receiving hole corresponding to the green light emitting region, and a transparent resin pattern 30b is prepared in the second receiving hole corresponding to the blue light emitting region. Next, referring to fig. 10e, a second encapsulation layer 9 is prepared; the refractive index of the second packaging layer 9 ranges from 1.7 to 2.0, preferably from 1.75 to 1.85; the thickness of the second encapsulation layer 9 is less than 1um, preferably less than 0.5 um. Next, referring to fig. 10f, a first band-pass filter layer 4 is prepared; specifically, the second light focusing structure 51 is prepared first, and then the second band-pass filtering structure 52 is prepared, the preparation processes of the second light focusing structure 51 and the second band-pass filtering structure 52 are the same as the preparation processes of the first light focusing structure 41 and the first band-pass filtering structure 42, and the specific preparation processes can refer to the foregoing contents, which are not described herein again; the second band-pass filter layer 5 completely covers the red light emitting area and the green light emitting area, but does not cover the blue light emitting area. Next, as shown in fig. 10g, a color resist layer 11, a circular polarizer 14, and a protective film 15 are sequentially prepared.
Based on the same utility model concept, this disclosed embodiment still provides a display device, and this display device is quantum dot display device, and this display device includes the display panel that any preceding embodiment provided, can refer to the content of preceding embodiment to this display panel's description, and the no longer redundance here is repeated.
Based on the same utility model concept, the embodiment of the present disclosure further provides a manufacturing method of a display panel, which can be used for manufacturing the display panel provided by the previous embodiment.
Fig. 11 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure, where as shown in fig. 11, the method includes:
step S101, preparing a first display substrate.
Step S101 includes step S1011.
In step S1011, a light emitting cell array is formed on the first substrate.
The light emitting unit array comprises a plurality of light emitting units, and the light emitting units are used for generating and emitting first color light.
And S102, preparing a second display substrate.
Step S102 includes step S1021.
Step S1021, forming a color filter light conversion array on the second substrate.
The light conversion color film array comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit, different light conversion color films correspond to different light emitting units, and the light conversion color films are used for generating other color lights under the excitation of the first color light.
In some embodiments, within step S102 and after step S1021, further comprising: step S1022.
Step S1022, a first bandpass filter layer is formed on the side of the color filter array away from the second substrate.
Wherein the first band pass filter layer comprises: the first band-pass filter structure and the first light gathering structure are located on one side, away from the second substrate, of the first band-pass filter structure, the first light gathering structure is configured to gather light, and the first band-pass filter structure is configured to transmit first color light and reflect other color light.
In some embodiments, within step S102 and before step S1021, further comprising: step S1020.
Step S1020 is to form a second bandpass filter layer on the second substrate and on one side of the subsequent photo-conversion color film array.
Wherein the second band-pass filter layer comprises: the second band-pass filtering structure and the second light condensation structure are located on one side, far away from the second substrate, of the second band-pass filtering structure, the second light condensation structure is configured to condense light, and the second band-pass filtering structure is configured to transmit other color light and reflect the first color light.
The technical solution of the present disclosure does not limit the sequence of step S101 and step S102, that is, step S102 may be executed before step S101, or executed after step S101, or executed synchronously with step S101.
Step S103, fixing the first display substrate and the second display substrate to each other.
The light emitting unit array and the light conversion color film array are located between the first substrate base plate and the second substrate base plate.
In the embodiment of the present disclosure, it is sufficient that step S102 includes at least one of step S1020 and step S1021, and the case where step S102 includes step S1020 to step S2022 in the drawing only serves as an exemplary function, and does not limit the technical solution of the present disclosure. For the detailed description of the above steps, reference may be made to the corresponding contents in the foregoing embodiments, which are not described herein again.
Fig. 12 is a flowchart of another manufacturing method of a display panel according to an embodiment of the present disclosure, and as shown in fig. 12, the manufacturing method includes:
step S201, forming a light emitting cell array on the first substrate.
The light emitting unit array comprises a plurality of light emitting units, and the light emitting units are used for generating and emitting first color light.
Step S203, forming a light conversion color film array on a side of the light emitting unit array away from the first substrate.
The light conversion color film array comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit, different light conversion color films correspond to different light emitting units, and the light conversion color films are used for generating other color lights under the excitation of the first color light.
In some embodiments, step S202 is further included between step S201 and step S203.
Step S202, forming a first band-pass filter layer on a side of the light emitting cell array away from the first substrate.
Wherein the first band pass filter layer comprises: the first light gathering structure is configured to gather light, and the first band-pass filter structure is configured to transmit first color light and reflect other color light.
In some embodiments, step S204 is further included after step S203.
Step S204, a second band-pass filter layer is formed on the side of the color filter array away from the first substrate.
Wherein the second band-pass filter layer comprises: the second light gathering structure and the second band-pass filtering structure are located on one side, far away from the first substrate, of the second light gathering structure, the second light gathering structure is configured to gather light, and the second band-pass filtering structure is configured to transmit other color light and reflect the first color light.
In the embodiment of the present disclosure, the preparation method may include at least one of the step S202 and the step S204, and the case that the step S202 to the step S204 are included in the drawing at the same time only plays an exemplary role, and does not limit the technical solution of the present disclosure. For the detailed description of the above steps, reference may be made to the corresponding contents in the foregoing embodiments, which are not described herein again.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (17)
1. A display panel, comprising: the display panel comprises a first substrate, a light emitting unit array and a light conversion color film array, wherein the light emitting unit array is located on one side of the first substrate and comprises a plurality of light emitting units, the light conversion color film array is located on one side, away from the first substrate, of the light emitting unit array and comprises a plurality of light conversion color films, one light conversion color film corresponds to one light emitting unit and different light conversion color films correspond to different light emitting units, the light emitting units are used for generating and emitting first color light, and the light conversion color films are used for generating other color light under the excitation of the first color light, and the display panel is characterized by further comprising:
a first bandpass filter layer located between the light emitting cell array and the light conversion color film array, comprising: the first light-gathering structure is arranged on one side, away from the first substrate, of the first light-gathering structure, the first light-gathering structure is used for gathering light, and the first band-pass filter structure is used for transmitting first color light and reflecting other color light; and/or the presence of a gas in the gas,
the second band-pass filter layer is positioned on one side, away from the light emitting unit array, of the light conversion color film array and comprises: the second light-condensing structure is configured to condense light, and the second band-pass filter structure is configured to transmit the other color light and reflect the first color light.
2. The display panel of claim 1, wherein the first light gathering structure comprises: the first collimating lenses correspond to the light emitting units one by one.
3. The display panel according to claim 2, further comprising: and the first collimating lens is embedded in the first transparent resin layer.
4. The display panel of claim 1, wherein the second light concentrating structure comprises: and the second collimating lenses correspond to the light conversion color films one to one.
5. The display panel according to claim 4, further comprising: and the second collimating lens is embedded in the second transparent resin layer.
6. The display panel of claim 1, wherein the first light gathering structure comprises: at least two first light-collecting films are stacked, and a refractive index of a first light-collecting film closer to the first substrate out of the adjacent first light-collecting films is smaller than a refractive index of a first light-collecting film farther from the first substrate.
7. The display panel of claim 1, wherein the second light concentrating structure comprises: and at least two second light-condensing films stacked on each other, wherein a refractive index of the second light-condensing film closer to the first substrate out of the adjacent second light-condensing films is smaller than a refractive index of the second light-condensing film farther from the first substrate.
8. The display panel of claim 1, wherein the first band pass filter structure is a distributed bragg reflector structure;
and/or the second band-pass filtering structure is a distributed Bragg reflection structure.
9. The display panel of claim 1, wherein the material of the color light conversion film comprises: a quantum dot material.
10. The display panel according to any one of claims 1 to 9, wherein the color filter array includes: a first light converting color film emitting a second color light and a second light converting color film emitting a third color light, the other color lights including: the second color light and the third color light;
the first color light is blue light, the second color light is red light, and the third color light is green light.
11. The display panel according to claim 10, wherein the first band-pass filter structure is configured to have a transmittance of 90% or more for light in a wavelength band of 400nm to 550nm and to totally reflect light in a wavelength band of 550nm to 780 nm.
12. The display panel according to claim 10, wherein the second band-pass filter structure is configured to have a transmittance of 90% or more for light in a wavelength band of 480nm to 800nm and to totally reflect light in a wavelength band of 380nm to 480 nm.
13. The display panel according to claim 10, wherein the display panel is divided into a plurality of light emitting areas, and the light emitting areas correspond to the light emitting units one to one;
the display panel further includes: the first band-pass filter layer is positioned between the first packaging layer and the light conversion color film array;
the first pixel defining layer is provided with a plurality of first accommodating holes, the first accommodating holes correspond to the light emergent areas one to one, and the light emitting units are located in the corresponding first accommodating holes.
14. The display panel according to claim 10, wherein the display panel is divided into a plurality of light emitting regions, the light emitting regions correspond to the light emitting units one by one, and the plurality of light emitting regions include: a first light-emitting region for emitting a first color light, a second light-emitting region for emitting a second color light, and a third light-emitting region for emitting a third color light;
the orthographic projection of the second band-pass filter layer on the first substrate covers the second light emitting area and the third light emitting area and does not cover the first light emitting area;
the display panel further includes: the first light conversion color film and the second light conversion color film are located in the corresponding first accommodating holes, and transparent resin patterns are arranged in the first accommodating holes corresponding to the light emitting areas.
15. The display panel according to claim 14, characterized by further comprising: the second packaging layer is positioned on one side, close to the first substrate, of the second pixel defining layer, the color resistance layer is positioned on one side, far away from the first substrate, of the second pixel defining layer, the second substrate is positioned on one side, far away from the first substrate, of the color resistance layer, the frame sealing glue is positioned between the first substrate and the second substrate and is positioned in the peripheral area, and the second band-pass filter layer is positioned between the color resistance layer and the second pixel defining layer;
the color resist layer includes: a black matrix and a plurality of color resists, the plurality of color resists comprising: the color filter comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor corresponds to the first light-emitting area one to one, the second color resistor corresponds to the second light-emitting area one to one, and the third color resistor corresponds to the third light-emitting area one to one.
16. The display panel according to claim 14, characterized by further comprising: the second packaging layer is positioned on one side, away from the first substrate, of the second pixel defining layer, the color resistance layer is positioned on one side, away from the first substrate, of the second packaging layer, the circular polarizer is positioned on one side, away from the first substrate, of the color resistance layer, and the protective film is positioned on one side, away from the first substrate, of the circular polarizer;
the color resist layer includes: a black matrix and a plurality of color resists, the plurality of color resists comprising: the color filter comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor corresponds to the first light-emitting area one to one, the second color resistor corresponds to the second light-emitting area one to one, and the third color resistor corresponds to the third light-emitting area one to one.
17. A display device, comprising: a display panel as claimed in any one of the claims 1-16.
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| CN115407544A (en) * | 2022-08-19 | 2022-11-29 | 京东方科技集团股份有限公司 | Reflective display panel and display device |
| WO2023087250A1 (en) * | 2021-11-19 | 2023-05-25 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| WO2023092535A1 (en) * | 2021-11-29 | 2023-06-01 | 京东方科技集团股份有限公司 | Display substrate |
| WO2023141892A1 (en) * | 2022-01-27 | 2023-08-03 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| WO2023207692A1 (en) * | 2022-04-28 | 2023-11-02 | 京东方科技集团股份有限公司 | Display substrate, packaging substrate, and display device |
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2020
- 2020-12-11 CN CN202022969341.3U patent/CN214672621U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087250A1 (en) * | 2021-11-19 | 2023-05-25 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| WO2023092535A1 (en) * | 2021-11-29 | 2023-06-01 | 京东方科技集团股份有限公司 | Display substrate |
| WO2023141892A1 (en) * | 2022-01-27 | 2023-08-03 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| WO2023207692A1 (en) * | 2022-04-28 | 2023-11-02 | 京东方科技集团股份有限公司 | Display substrate, packaging substrate, and display device |
| CN115407544A (en) * | 2022-08-19 | 2022-11-29 | 京东方科技集团股份有限公司 | Reflective display panel and display device |
| CN115407544B (en) * | 2022-08-19 | 2024-04-16 | 京东方科技集团股份有限公司 | Reflective display panel and display device |
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