Display unit, display panel and display module
By adopting an optical unit combination with anti-reflection and anti-reflection properties and a color conversion layer design in the display unit, the problem of limited light efficiency improvement in the existing technology is solved, and efficient light energy utilization and color gamut expansion of the display panel are achieved.
Patent Information
- Application Number
- CN202410253807.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-09-09
AI Technical Summary
In the prior art, the method of improving the light efficiency of the display panel by adding Bragg reflectors (DBRs) above and below the quantum dot layer is limited, and it is difficult to further improve the light efficiency of the display panel.
The display unit adopts an array distribution, including a light-emitting unit, a first optical unit and a second optical unit stacked in sequence. The first optical unit has an anti-transmittance characteristic for the excitation light, and the second optical unit has an anti-reflection characteristic for the excitation light. A color conversion layer is arranged in between to convert the excitation light into light of different colors, and the light efficiency is improved through multiple conversions.
Through multiple optical property designs and the setting of color conversion layers, the light efficiency and color gamut of the display panel are significantly improved, achieving higher light energy utilization.
Smart Images
Figure CN120614925A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of display panels, and in particular, to a display unit, a display panel, and a display module. Background Art
[0002] To achieve a high color gamut for Micro LEDs (micro light-emitting diodes), existing quantum dot color conversion solutions often utilize DBRs (Bragg reflectors) above and below the quantum dot layer to enhance luminous efficiency. However, the added DBRs only improve the luminous efficiency of display panels to a limited extent, making it difficult to further enhance the luminous efficiency of display panels.
[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention
[0004] The purpose of the present disclosure is to provide a display unit, a display panel and a display module to further improve the light efficiency of the display unit, the display panel and the display module.
[0005] According to one aspect of the present disclosure, a display panel is provided, comprising display units arranged in an array; the display units comprising a light-emitting unit, a first optical unit, and a second optical unit stacked in sequence; the light-emitting unit is configured to provide excitation light; the first optical unit exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit side; and the second optical unit exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit side.
[0006] The display unit includes a first display unit, and the first display unit further includes a first color conversion layer located between the first optical unit and the second optical unit;
[0007] The first color conversion layer is used to convert the excitation light into light of a first color, wherein the wavelength of the light of the first color is greater than the wavelength of the excitation light;
[0008] The first optical unit exhibits a reflection-enhancing characteristic for the light of the first color coming from the side of the first color conversion layer;
[0009] The second optical unit exhibits anti-reflection properties for the light of the first color coming from the side of the first color conversion layer.
[0010] According to one embodiment of the present disclosure, the first display unit includes a red display unit and a green display unit; the color conversion material layer of the red display unit is a red conversion material layer; the color conversion material layer of the green display unit is a green conversion material layer.
[0011] According to one embodiment of the present disclosure, the display unit further includes a second display unit; the second display unit includes a second color conversion layer located between the first optical unit and the second optical unit;
[0012] The second color conversion layer is used to convert the excitation light into light of a second color, wherein the wavelength of the light of the second color is greater than the wavelength of the excitation light;
[0013] The first optical unit exhibits a reflection-enhancing characteristic for the light of the second color coming from the second color conversion layer side;
[0014] The second optical unit exhibits anti-reflection properties for light of the second color coming from the second color conversion layer side.
[0015] According to an embodiment of the present disclosure, the display unit further includes a second display unit;
[0016] The output light of the second display unit is the excitation light.
[0017] According to an embodiment of the present disclosure, the display unit further includes a second display unit;
[0018] The output light of the second display unit is the excitation light; the second display unit is not provided with the second color conversion layer.
[0019] According to an embodiment of the present disclosure, the first optical unit is a Bragg reflector or a liquid crystal layer; the second optical unit is a Bragg reflector or a liquid crystal layer.
[0020] According to an embodiment of the present disclosure, a type of the first optical unit is different from a type of the second optical unit.
[0021] According to one embodiment of the present disclosure, the first optical units of each of the display units are connected to form a first optical unit layer covering multiple display units; and / or, the second optical units of each of the display units are connected to form a second optical unit layer covering multiple display units.
[0022] According to an embodiment of the present disclosure, the first optical units of the display units are separated from each other; and / or the second optical units of the display units are separated from each other.
[0023] According to an embodiment of the present disclosure, the display units are isolated from each other.
[0024] According to an embodiment of the present disclosure, the display unit further includes a color filter unit;
[0025] The color film unit is arranged on a side of the second optical unit away from the light emitting unit, and the color of the color film unit is the same as the light output color of the display unit.
[0026] According to a second aspect of the present disclosure, there is provided a display unit, comprising a light emitting unit, a first optical unit, a color conversion layer, and a second optical unit stacked in sequence;
[0027] The light emitting unit is used to provide excitation light;
[0028] The color conversion layer is used to convert the excitation light into target light, wherein the wavelength of the target light is greater than the wavelength of the excitation light;
[0029] The first optical unit exhibits a reflection-enhancing property for the target light and an anti-transmission property for the excitation light from the light-emitting unit side;
[0030] The second optical unit exhibits an anti-transmission property for the target light and an anti-reflection property for the excitation light from the light-emitting unit side.
[0031] According to a third aspect of the present disclosure, a display module is provided, comprising the display panel.
[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.
[0034] Figure 1 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0035] Figure 2 This is a schematic diagram of preparing a color film unit in one embodiment of the present disclosure.
[0036] Figure 3 Schematic diagram of preparing a planarization layer on a color filter unit in one embodiment of the present disclosure.
[0037] Figure 4 This is a schematic diagram of preparing a liquid crystal layer on a planarization layer in one embodiment of the present disclosure.
[0038] Figure 5This is a schematic diagram of curing a portion of the liquid crystal layer and shielding another portion of the liquid crystal layer in one embodiment of the present disclosure.
[0039] Figure 6 Schematic diagram of heating uncured liquid crystal in one embodiment of the present disclosure.
[0040] Figure 7 This is a schematic diagram of heating uncured liquid crystal in one embodiment of the present disclosure.
[0041] Figure 8 This is a schematic diagram of preparing multiple color conversion openings on a liquid crystal layer in one embodiment of the present disclosure.
[0042] Figure 9 Schematic diagram of the structure of dripping color conversion material into the color conversion opening in one embodiment of the present disclosure.
[0043] Figure 10 FIG. 1 is a schematic diagram of fabricating a Bragg reflector on a color conversion layer in one embodiment of the present disclosure.
[0044] Figure 11 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0045] Figure 12 This is a schematic diagram of preparing a color film unit in one embodiment of the present disclosure.
[0046] Figure 13 Schematic diagram of preparing a planarization layer on a color filter unit in one embodiment of the present disclosure.
[0047] Figure 14 This is a schematic diagram of preparing a liquid crystal layer on a planarization layer in one embodiment of the present disclosure.
[0048] Figure 15 This is a schematic diagram of preparing multiple color conversion openings on a liquid crystal layer in one embodiment of the present disclosure.
[0049] Figure 16 Schematic diagram of the structure of dripping color conversion material into the opening of the color conversion layer in one embodiment of the present disclosure.
[0050] Figure 17 FIG. 1 is a schematic diagram of fabricating a Bragg reflector on a color conversion layer in one embodiment of the present disclosure.
[0051] Figure 18 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0052] Figure 19 This is a schematic diagram of preparing a color film unit in one embodiment of the present disclosure.
[0053] Figure 20 Schematic diagram of preparing a planarization layer on a color filter unit in one embodiment of the present disclosure.
[0054] Figure 21 This is a schematic structural diagram of preparing a Bragg reflector on a flat layer in one embodiment of the present disclosure.
[0055] Figure 22 This is a schematic structural diagram of an embodiment of the present disclosure, in which a color conversion layer is prepared on a Bragg reflector and the color conversion layer is patterned to form a color conversion opening.
[0056] Figure 23 Schematic diagram of the structure of dripping color conversion material into the color conversion opening in one embodiment of the present disclosure.
[0057] Figure 24 FIG1 is a schematic structural diagram of preparing a liquid crystal layer on a color conversion layer in one embodiment of the present disclosure.
[0058] Figure 25 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0059] Figure 26 This is a schematic diagram of preparing a color film unit in one embodiment of the present disclosure.
[0060] Figure 27 Schematic diagram of preparing a planarization layer on a color filter unit in one embodiment of the present disclosure.
[0061] Figure 28 This is a schematic structural diagram of preparing a partial liquid crystal layer on a planarization layer in one embodiment of the present disclosure.
[0062] Figure 29 This is a schematic structural diagram of an embodiment of the present disclosure, in which a color conversion layer is prepared on a liquid crystal layer and the color conversion layer is patterned to form a color conversion opening.
[0063] Figure 30 Schematic diagram of the structure of dripping color conversion material into the color conversion opening in one embodiment of the present disclosure.
[0064] Figure 31 FIG1 is a schematic structural diagram of a Bragg reflector prepared on a color conversion layer in one embodiment of the present disclosure.
[0065] Figure 32 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0066] Figure 33 This is a structural schematic diagram of an embodiment of the present disclosure, in which a P-type semiconductor layer, a multi-layer quantum well layer, and an N-type semiconductor layer are sequentially deposited on a first substrate.
[0067] Figure 34 This is a structural schematic diagram of an embodiment of the present disclosure, in which the first base substrate is removed, and the film layer structure on the first base substrate is flipped over and placed on the second base substrate.
[0068] Figure 35 This is a schematic structural diagram of a Bragg reflector prepared on a P-type semiconductor layer in one embodiment of the present disclosure.
[0069] Figure 36 This is a structural schematic diagram of an embodiment of the present disclosure, in which the second base substrate is removed, and the film layer structure on the second base substrate is flipped over and placed on a third base substrate.
[0070] Figure 37 Schematic diagram of patterning a film layer on a third substrate in one embodiment of the present disclosure.
[0071] Figure 38 This is a schematic diagram of preparing a first electrode and a second electrode on a P-type semiconductor layer on top of a third base substrate in one embodiment of the present disclosure.
[0072] Figure 39 This is a structural schematic diagram of an embodiment of the present disclosure, in which the third base substrate is removed, and the film layer structure on the third base substrate is flipped over and placed on a fourth base substrate.
[0073] Figure 40 Schematic diagram of the structure of a display unit in one embodiment of the present disclosure.
[0074] Figure 41 This is a schematic diagram of sequentially preparing an N-type semiconductor layer, a multi-layer quantum well layer, and a P-type semiconductor layer on a temporary substrate in one embodiment of the present disclosure.
[0075] Figure 42 This is a schematic diagram of an embodiment of the present disclosure, in which the first base substrate is removed and the film structure on the first base substrate is flipped over and placed on a temporary substrate.
[0076] Figure 43 This is a schematic diagram of fabricating a Bragg reflector on an N-type semiconductor layer in one embodiment of the present disclosure.
[0077] Figure 44 Schematic diagram of preparing a color conversion layer on a Bragg reflector and patterning the color conversion layer to form a color conversion opening in one embodiment of the present disclosure.
[0078] Figure 45 This is a schematic diagram of an embodiment of the present disclosure, in which a liquid crystal layer is prepared on a Bragg reflector, and the liquid crystal layer is located at a color conversion opening.
[0079] Figure 46FIG. 1 is a schematic diagram of dripping a color conversion material into a color conversion opening in one embodiment of the present disclosure.
[0080] Figure 47 This is a schematic diagram of an embodiment of the present disclosure in which a first display unit and a second display unit are connected to each other.
[0081] Figure 48 This is a schematic diagram of an embodiment of the present disclosure in which the first display unit and the second display unit are separated from each other.
[0082] Description of reference numerals:
[0083] DU, display unit; GDU, green display unit; BDU, blue display unit; RDU, red display unit; LD, light-emitting unit; LB, color conversion layer; PLN, flat layer; DU1, first display unit; LA, first optical unit; LB1, first color conversion layer; LC, second optical unit; DU2, second display unit; LB2, second color conversion layer; DBR, Bragg reflector; CL, liquid crystal layer; WW, transparent part; CF, color filter unit; PSCL, P-type semiconductor layer; NSCL, N-type semiconductor layer; MOW, multi-layer quantum well layer; E1, first electrode; E2, second electrode; SBT1, first substrate; SBT2, second substrate; SBT3, third substrate; SBT4, sapphire substrate; TBT1, temporary substrate. DETAILED DESCRIPTION
[0084] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
[0085] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.
[0086] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.
[0087] Structural layer A is located on the side of structural layer B facing away from the base substrate. This means that structural layer A is formed on the side of structural layer B facing away from the base substrate. When structural layer B is a patterned structure, part of structural layer A may also be located at the same physical height as structural layer B or lower than the physical height of structural layer B, with the base substrate serving as a height reference.
[0088] In the related art, the light efficiency is improved by adding Bragg reflectors (DBRs) above and below the color conversion material layer of the display panel. The principle of the Bragg reflector DBR to improve the light efficiency is that the Bragg reflector DBR has the characteristics of transmitting the specified light and reflecting the rest of the light except the specified light. The light-emitting unit emits excitation light, and the excitation light passes through the color conversion material. The color conversion material converts the light passing through the color conversion material, and the excitation light is converted into the light of the corresponding color conversion material. When the converted light is the light specified by the Bragg reflector DBR, the converted light can pass through the Bragg reflector DBR. When the light is not the light specified by the Bragg reflector DBR, the light is reflected by the Bragg reflector DBR. The Bragg reflector DBR can improve the light efficiency of the display panel to a certain extent, but the improvement of the light efficiency of the display panel is limited.
[0089] Based on this, the present disclosure provides a display panel, see Figure 1 、 Figure 11 、 Figure 18 、 Figure 25 、 Figure 32 and Figure 40The display panel includes an array of display units DU, which include a light-emitting unit LD, a first optical unit LA, and a second optical unit LC stacked in sequence; the light-emitting unit LD is used to provide excitation light; the first optical unit LA exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit LD side; the second optical unit LC exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit LD side; the display unit DU includes a first display unit DU1, and the first display unit DU1 also includes a first color conversion layer LB1 located between the first optical unit LA and the second optical unit LC; the first color conversion layer LB1 is used to convert the excitation light into light of a first color, wherein the wavelength of the light of the first color is greater than the wavelength of the excitation light; the first optical unit LA exhibits an anti-reflection characteristic for the light of the first color from the side of the first color conversion layer LB1; the second optical unit LC exhibits an anti-reflection characteristic for the light of the first color from the side of the first color conversion layer LB1.
[0090] It should be noted that the "anti-reflection property" mentioned in this application means that the transmittance of the film layer is greater than the reflectivity. For example, see Figure 1 When the laser of the light-emitting unit LD is blue light, the transmittance of the first optical unit LA to the blue light is greater than 95%, and the reflectivity of the first optical unit LA to the blue light is less than 5%. In this state, the transmittance is greater than the reflectivity, and the first optical unit LA exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit LD side; similarly, the "anti-reflection characteristic" described in this application refers to the transmittance being less than the reflectivity. For example, when the laser of the light-emitting unit LD is blue light, the transmittance of the second optical unit LC to the blue light is less than 5%, and the reflectivity of the second optical unit LC to the blue light is greater than 90%. In this state, the transmittance is less than the reflectivity, and the second optical unit LC exhibits an anti-reflection characteristic for the excitation light from the light-emitting unit LD side.
[0091] In the embodiment of the present disclosure, the light-emitting unit LD emits excitation light, and the excitation light passes through the first optical unit LA. The first optical unit LA has an anti-transmittance characteristic for the excitation light emitted by the light-emitting unit LD. The excitation light passing through the first optical unit LA contacts the first color conversion layer LB1. The first color conversion layer LB1 converts the anti-transmittance excitation light into light of the first color. The light of the first color passes through the second optical unit LC. The second optical unit LC has an anti-transmittance characteristic for the light of the first color and reflects the light that passes through the first color conversion layer LB1 but is not converted into the first color. The light that is not converted into the first color is reflected to the first color conversion layer LB1, and the unconverted excitation light continues to undergo color conversion in the first color conversion layer LB1. This is repeated many times to achieve full conversion of laser light, which helps to improve the light efficiency of the display panel.
[0092] In some disclosed embodiments, see Figure 1 、 Figure 11 、 Figure 18 、 Figure 25 、 Figure 32 The display unit DU may also include a color filter unit CF. The color filter unit CF is disposed on the side of the second optical unit LC away from the light-emitting unit LD. The color of the color filter unit CF matches the color of the light emitted by the display unit DU. By adding the color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD, the color gamut of the display panel can be improved.
[0093] In some embodiments of the present disclosure, the first display unit DU1 includes a red display unit RDU and a green display unit GDU. The color conversion material layer of the red display unit RDU is a red conversion material layer, while the color conversion material layer of the green display unit GDU is a green conversion material layer. It is understood that when the excitation light emitted by the light-emitting unit LD is enhanced by the first optical unit LA, the excitation light passing through the first optical unit LA comes into contact with the red conversion material layer, and the red conversion material layer converts the excitation light into red light, the display unit DU is a red display unit RDU. Similarly, when the excitation light emitted by the light-emitting unit LD is enhanced by the first optical unit LA, the excitation light passing through the first optical unit LA comes into contact with the green conversion material layer, and the green conversion material layer converts the excitation light into green light, the display unit DU is a green display unit GDU.
[0094] In some embodiments of the present disclosure, the display unit DU also includes a second display unit DU2; the second display unit DU2 includes a second color conversion layer LB2 located between the first optical unit LA and the second optical unit LC; the second color conversion layer LB2 is used to convert the excitation light into light of a second color, wherein the wavelength of the light of the second color is greater than the wavelength of the excitation light; the first optical unit LA exhibits an anti-reflection characteristic for the light of the second color from the side of the second color conversion layer LB2; the second optical unit LC exhibits an anti-transmission characteristic for the light of the second color from the side of the second color conversion layer LB2.
[0095] As an example of this embodiment, Figure 11 is a schematic diagram of the structure of the display unit, see Figure 11The second display unit DU2 may include a light-emitting unit LD, a first optical unit LA, a second color conversion layer LB2, and a second optical unit LC, which are stacked in sequence. In this example, the first optical unit LA exhibits anti-reflection properties for the excitation light from the light-emitting unit LD. The second color conversion layer LB2 converts the excitation light passing through the first optical unit LA into light of a second color. The second optical unit LC exhibits anti-reflection properties for light of the second color from the second color conversion layer LB side and anti-reflection properties for the excitation light. With this configuration, the light-emitting unit LD emits excitation light. The first optical unit LA exhibits anti-reflection properties for the excitation light, allowing the excitation light to pass through the first optical unit LA and enter the second color conversion layer LB2. The second color conversion layer LB2 converts the excitation light transmitted through the first optical unit LA into light of the second color. The second optical unit LC exhibits anti-reflection properties for the second color light from the second color conversion layer LB. The second optical unit LC also exhibits anti-reflection properties for the excitation light. Excitation light not converted by the second color conversion layer LB2 is reflected by the second optical unit LC. The reflected excitation light re-enters the second color conversion layer LB2 for secondary conversion. The second color conversion layer LB2 converts the excitation light reflected by the second optical unit LC into light of the second color. The converted second color light can then pass through the second optical unit LC. This multiple conversion of the excitation light emitted by the light-emitting unit LD helps improve the display light efficiency of the second display unit DU2, and thus the display light efficiency of the display panel.
[0096] As another example of this embodiment, Figure 18 is a schematic diagram of the structure of the display unit, see Figure 18 The second display unit DU2 may include a light-emitting unit LD, a second optical unit LC, a second color conversion layer LB2, and a first optical unit LA, which are stacked in sequence. The light-emitting unit LD emits excitation light. The second optical unit LC exhibits anti-transmission properties for the excitation light emitted by the light-emitting unit LD. The excitation light passes through the second optical unit LC. The second color conversion layer LB2 converts the excitation light that passes through the second optical unit LC into light of a second color. The first optical unit LA exhibits anti-transmission properties for light of the second color from the second color conversion layer LB. The first optical unit LA exhibits anti-reflection properties for excitation light that is not converted by the second color conversion layer LB2. The excitation light that is not converted by the second color conversion layer LB2 is emitted by the first optical unit LA. The excitation light reflected by the first optical unit LA re-enters the second color conversion layer LB2 for secondary conversion. The second color conversion layer LB2 converts the reflected excitation light into light of the second color. The converted light of the second color can then pass through the first optical unit LA. This configuration performs multiple conversions of the excitation light emitted by the light-emitting unit LD, helping to improve the display light efficiency of the second display unit DU2, thereby improving the display light efficiency of the display.
[0097] In some embodiments of the present disclosure, the display unit DU further includes a second display unit DU2 ; the output light of the second display unit DU2 is the excitation light.
[0098] As an example of this embodiment, Figure 1 is a schematic diagram of the structure of the display unit, see Figure 1 The second display unit DU2 may include a light-emitting unit LD, a first optical unit LA, and a transparent portion WW, which are stacked in sequence. In this example, the second display unit DU2 does not include the second color conversion layer LB2. The light-emitting unit LD emits excitation light, and the first optical unit LA exhibits anti-reflection properties for the excitation light. The excitation light that passes through the first optical unit LA is emitted through the transparent portion WW. In this configuration, the light-emitting unit LD emits excitation light.
[0099] In some embodiments of the present disclosure, the display unit DU further includes a second display unit DU2 ; the output light of the second display unit DU2 is excitation light; and the second display unit DU2 is not provided with a second color conversion layer LB2 .
[0100] Figure 1 The light emitted by the second display unit DU2 of the display panel is the excitation light; the second display unit DU2 is not provided with the second color conversion layer LB2. Figure 1 , the display panel can be prepared in the following manner:
[0101] See also Figure 2 , preparing a color filter unit CF; the color filter substrate includes a high-transmittance substrate such as a glass substrate. Taking the glass substrate as an example here, a light-shielding layer is deposited on the glass substrate. Specifically, a black matrix light-absorbing material is prepared on the glass substrate by coating or photolithography process as the light-shielding layer, and the light-shielding layer is patterned to form a plurality of openings in the light-shielding layer, each opening exposing a portion of the glass substrate, wherein every three openings correspond to a pixel unit, and each different opening includes a first color opening, a second color opening, and a third color opening. Finally, an inkjet printing process is used to print ink of corresponding colors in unused color openings to prepare the color filter unit CF.
[0102] In some embodiments of this example, a focusing component can be arranged in the opening of the shading layer to further improve the light output efficiency of the display unit DU, the display panel and the related display module, but the embodiments of the present disclosure are not limited to this; at the same time, the opening set in the shading layer can be square or in an inverted trapezoidal shape. For example, when the opening is an inverted trapezoidal shape, that is, the area of the top of the opening is larger than the area of the bottom of the opening, the undercut phenomenon at the bottom of the opening can be avoided, which is beneficial to the preparation of the display unit DU and the display panel.
[0103] See also Figure 3, prepare a flat layer PLN on the color film unit CF; prepare a flat layer PLN on the side of the light-shielding layer away from the glass substrate through a process such as spin coating or deposition. This setting can avoid the phenomenon of light deflection when light passes through the color film unit CF, further improving the light efficiency of related devices.
[0104] See also Figure 4 , a liquid crystal layer CL is formed on the flat layer PLN; a liquid crystal layer CL is formed on the side of the flat layer PLN away from the color filter unit CF by spin coating, and a portion of the liquid crystal layer CL corresponding to the first display unit DU1 is cured by ultraviolet irradiation (it can be understood that in this embodiment, other methods can also be used to cure the liquid crystal layer CL), and a portion corresponding to the second display unit DU2 is shielded (see Figure 5 、 Figure 6 ), and then the liquid crystal layer CL is heated (see Figure 7 ), the portion of the liquid crystal layer CL corresponding to the second display unit DU2 is not solidified, and the liquid crystal portion corresponding to the second display unit DU2 has a gap therebetween under the action of heating, and does not selectively transmit light.
[0105] See also Figure 8 、 Figure 9 A color conversion layer LB is prepared on the side of the liquid crystal layer CL away from the color filter unit CF. The color conversion layer LB is patterned to form a plurality of different color conversion openings, and the color conversion openings are arranged corresponding to the color openings of the color filter unit CF. A color conversion material is dripped into the color conversion opening corresponding to the first display unit DU1, and no color conversion material is dripped into the color conversion opening corresponding to the second display unit DU2.
[0106] See also Figure 10 A Bragg reflector DBR is prepared on the side of the color conversion layer LB away from the color filter unit CF to form a quantum dot substrate (not specifically marked in the drawings of this application).
[0107] Align the quantum dot substrate and the light-emitting unit LD.
[0108] In the display panel manufactured according to this embodiment, the emitted light of the second display unit DU2 is the excitation light, and no color conversion material is dripped into the second color conversion layer LB2.
[0109] As another example, Figure 25 is a schematic diagram of the structure of the display unit, see Figure 25The second display unit DU2 may include a light-emitting unit LD, a first optical unit LA, and a transparent portion WW, stacked in sequence. In this example, the second display unit DU2 does not include the second color conversion layer LB2. With this configuration, the light-emitting unit LD emits excitation light, and the first optical unit LA exhibits anti-reflection properties for the excitation light, which then passes through the first optical unit LA and the transparent portion WW and is then emitted.
[0110] Figure 25 The light emitted by the second display unit DU2 of the display panel is the excitation light; the second display unit DU2 is not provided with the second color conversion layer LB2. Figure 25 , the display panel can be prepared in the following manner:
[0111] See also Figure 26 , preparing a color filter unit CF; the color filter substrate includes a high-transmittance substrate such as a glass substrate. Taking the glass substrate as an example here, a light-shielding layer is deposited on the glass substrate. Specifically, a black matrix light-absorbing material is prepared on the glass substrate by coating or photolithography process as the light-shielding layer, and the light-shielding layer is patterned to form a plurality of openings in the light-shielding layer, each opening exposing a portion of the glass substrate, wherein every three openings correspond to a pixel unit, and each different opening includes a first color opening, a second color opening, and a third color opening. Finally, an inkjet printing process is used to print ink of corresponding colors in unused color openings to prepare the color filter unit CF.
[0112] In some embodiments of this example, a focusing component can be arranged in the opening of the shading layer to further improve the light output efficiency of the display unit DU, the display panel and the related display module, but the embodiments of the present disclosure are not limited to this; at the same time, the opening set in the shading layer can be square or in an inverted trapezoidal shape. For example, when the opening is an inverted trapezoidal shape, that is, the area of the top of the opening is larger than the area of the bottom of the opening, the undercut phenomenon at the bottom of the opening can be avoided, which is beneficial to the preparation of the display unit DU and the display panel.
[0113] See also Figure 27 , prepare a flat layer PLN on the color filter unit; prepare a flat layer PLN on the side of the light-shielding layer away from the glass substrate through spin coating or deposition processes. This setting can avoid the phenomenon of light deflection when light passes through the color filter unit CF, further improving the light efficiency of related devices.
[0114] See also Figure 28A Bragg reflector DBR is prepared on the flat layer PLN, and a portion of the Bragg reflector DBR corresponding to the second display unit DU2 is etched so that the portion of the Bragg reflector DBR corresponding to the second display unit DU2 can non-selectively transmit light (for example, a transparent material, such as a transparent resin, can be filled in the portion of the Bragg reflector DBR corresponding to the second display unit DU2).
[0115] See also Figure 29 、 Figure 30 A color conversion layer LB is prepared on the side of the Bragg reflector DBR away from the color filter unit CF. The color conversion layer LB is patterned to form a plurality of different color conversion openings, and the color conversion openings are arranged corresponding to the color openings of the color filter unit CF. A color conversion material is dripped into the color conversion opening corresponding to the first display unit DU1, and no color conversion material is dripped into the color conversion opening corresponding to the second display unit DU2.
[0116] See also Figure 31 A liquid crystal layer CL is prepared by spin coating on the side of the color conversion layer LB away from the color filter unit CF, and the liquid crystal layer CL is cured by ultraviolet irradiation. This forms a quantum dot substrate (not specifically labeled in the drawings of this application);
[0117] The quantum dot substrate and the light emitting unit LD are assembled to produce the display panel in this example. In the display panel produced according to this embodiment, the light emitted by the second display unit DU2 is the excitation light, and no color conversion material is dripped into the second color conversion layer LB2.
[0118] As another example, Figure 32 is a schematic diagram of the structure of the display unit, see Figure 32 The second display unit may include a light-emitting unit LD, a first optical unit LA, and a transparent portion WW, stacked in sequence. In this example, the second display unit DU2 does not include the second color conversion layer LB2. With this configuration, the light-emitting unit LD emits excitation light, and the first optical unit LA exhibits anti-reflection properties for the excitation light, which then exits through the first optical unit LA and the transparent portion WW.
[0119] Figure 32 The light emitted by the second display unit DU2 of the display panel is the excitation light; the second display unit DU2 is not provided with the second color conversion layer LB2. Figure 32 , the display panel can be prepared in the following manner:
[0120] A first substrate SBT1 is provided. In the embodiment of the present disclosure, the first substrate SBT1 is a sapphire substrate. Figure 33An N-type semiconductor layer NSCL is prepared on the first substrate SBT1, a multi-layer quantum well layer MOW is prepared on the side of the N-type semiconductor layer NSCL away from the first substrate SBT1, and a P-type semiconductor layer PSCL is prepared on the side of the multi-layer quantum well layer MOW away from the N-type semiconductor layer NSCL.
[0121] See also Figure 34 , remove the first substrate SBT1, and flip the hierarchical structure on the first substrate SBT1 and place it on the temporary substrate TBT1. At this time, the P-type semiconductor layer PSCL is close to the temporary substrate TBT1, and the N-type semiconductor layer NSCL is on the top.
[0122] See also Figure 35 A Bragg reflector DBR is prepared on the side of the N-type semiconductor layer NSCL away from the multi-layer quantum well layer MOW.
[0123] See also Figure 36 , remove the temporary substrate TBT1, flip the hierarchical structure on the temporary substrate TBT1 and place it on the second substrate SBT2, at this time the Bragg reflector DBR is close to the second substrate SBT2, and the P-type semiconductor layer PSCL is located on the top.
[0124] See also Figure 37 , the hierarchical structure on the second substrate SBT2 is etched, and then the hierarchical structure is etched to form electrode steps on the hierarchical structure on the second substrate SBT2.
[0125] See also Figure 38 , preparing a first electrode layer and a second electrode layer on the electrode step, and patterning the first electrode layer and the second electrode layer to form a first electrode E1 and a second electrode E2.
[0126] See also Figure 39 The hierarchical structure on the second substrate SBT2 is flipped over to the third substrate SBT3. At this time, the first electrode E1 and the second electrode E2 are close to the third substrate SBT3, and the Bragg reflector DBR is located at the top of the hierarchical structure, thereby preparing mutually isolated Bragg reflectors DBR that are arranged on the light-emitting surface of the light-emitting unit LD.
[0127] Prepare a color filter unit CF; the color filter substrate includes a high-transmittance substrate such as a glass substrate. Here, the glass substrate is taken as an example. A light-shielding layer is deposited on the glass substrate. Specifically, a black matrix light-absorbing material is prepared on the glass substrate by coating or photolithography process as the light-shielding layer, and the light-shielding layer is patterned to form a plurality of openings in the light-shielding layer, and each opening exposes a portion of the glass substrate.
[0128] Among them, every three openings correspond to a pixel unit, and each different opening includes a first color opening, a second color opening, and a third color opening. Finally, an inkjet printing process is used to print ink of corresponding colors in unused color openings to prepare a color film unit CF.
[0129] In some embodiments of this example, a focusing component can be arranged in the opening of the shading layer to further improve the light output efficiency of the display unit DU, the display panel and the related display module, but the embodiments of the present disclosure are not limited to this; at the same time, the opening set in the shading layer can be square or in an inverted trapezoidal shape. For example, when the opening is an inverted trapezoidal shape, that is, the area of the top of the opening is larger than the area of the bottom of the opening, the undercut phenomenon at the bottom of the opening can be avoided, which is beneficial to the preparation of the display unit DU and the display panel.
[0130] A flat layer PLN is prepared on the color film unit; a flat layer PLN is prepared on the side of the light-shielding layer away from the glass substrate through processes such as spin coating or deposition. This arrangement can avoid the phenomenon of light deflection when light passes through the color film unit CF, further improving the light efficiency of related devices.
[0131] A liquid crystal layer CL is prepared on the flat layer PLN; the liquid crystal layer CL is prepared on the side of the flat layer PLN away from the color film unit CF by spin coating, and the portion of the liquid crystal layer CL corresponding to the first display unit DU1 is cured by ultraviolet irradiation (it can be understood that, in this embodiment, other methods can also be used to cure the liquid crystal layer CL), and the portion corresponding to the second display unit DU2 is blocked. Thereafter, the liquid crystal layer CL is heated. Since the portion corresponding to the second display unit DU2 is not cured, there is a gap between the liquid crystal portions corresponding to the second display unit DU2 under the action of heating, and light is not selectively transmitted.
[0132] A color conversion layer LB is formed on a side of the liquid crystal layer CL away from the color filter unit CF. The color conversion layer LB is patterned to form a plurality of different color conversion openings. The color conversion openings are arranged corresponding to the color openings of the color filter unit CF. A color conversion material is dripped into the color conversion opening corresponding to the first display unit DU1, while no color conversion material is dripped into the color conversion opening corresponding to the second display unit DU2 (it will be understood that in this example, the corresponding color conversion material may also be dripped into the color conversion opening corresponding to the second display unit DU2, and this example does not specifically limit this).
[0133] A Bragg reflector DBR is prepared on the side of the color conversion layer LB away from the color filter unit CF to form a quantum dot substrate (not specifically marked in the drawings of this application).
[0134] The quantum dot substrate is assembled with a light emitting unit LD having a Bragg reflector DBR light emitting unit LD separated from each other on the light emitting surface. In the display panel prepared according to this embodiment, the light emitted by the second display unit DU2 is the excitation light, and no color conversion material is dripped into the second color conversion layer LB2.
[0135] In some disclosed embodiments, the first optical unit LA is a Bragg reflector DBR or a liquid crystal layer CL; the second optical unit LC is a Bragg reflector DBR or a liquid crystal layer CL.
[0136] As an example of this embodiment, the first optical unit LA may be a Bragg reflector DBR, and the second optical unit LC may be a Bragg reflector DBR.
[0137] As another example of this embodiment, the first optical unit LA may be a liquid crystal layer CL, and the second optical unit LC may be a liquid crystal layer CL; of course, the first optical unit LA may be a liquid crystal layer CL, and the second optical unit LC may be a Bragg reflector DBR.
[0138] In some disclosed embodiments, the type of the first optical unit LA is different from the type of the second optical unit LC. It is understood that the first optical unit LA may be a Bragg reflector DBR, and the second optical unit LC may be a liquid crystal layer CL; the first optical unit LA may be a liquid crystal layer CL, and the second optical unit LC may be a Bragg reflector DBR.
[0139] In some embodiments of the present disclosure, in the first display unit DU1, the side of the second optical unit LC away from the light-emitting unit LD may not be provided with a color filter unit CF. However, in the second display unit DU2, the side of the second optical unit LC away from the light-emitting unit LD may be provided with a color filter unit CF. In the second display unit DU2, by providing the color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD, the color gamut of the second display unit DU2 can be improved, thereby improving the color gamut of the display panel.
[0140] In some embodiments of the present disclosure, a color filter unit CF may be provided on the side of the second optical unit LC away from the light-emitting unit LD in the first display unit DU1, while a color filter unit CF may not be provided on the side of the second optical unit LC away from the light-emitting unit LD in the second display unit DU2. Providing a color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD in the first display unit DU1 improves the color gamut of the first display unit DU1, thereby improving the color gamut of the display panel.
[0141] In some embodiments of the present disclosure, a color filter unit CF may be provided on the side of the second optical unit LC away from the light-emitting unit LD in the first display unit DU1. Similarly, a color filter unit CF may be provided on the side of the second optical unit LC away from the light-emitting unit LD in the second display unit DU. In the first display unit DU1, providing the color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD improves the color gamut of the first display unit DU1. In the second display unit DU2, providing the color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD improves the color gamut of the second display unit DU2, thereby improving the color gamut of the display panel.
[0142] In some embodiments of the present disclosure, in the first display unit DU1, the side of the second optical unit LC away from the light-emitting unit LD may not be provided with a color filter unit CF. In the second display unit DU, the side of the second optical unit LC away from the light-emitting unit LD may be provided with a color filter unit CF. In the second display unit DU2, by providing a color filter unit CF on the side of the second optical unit LC away from the light-emitting unit LD, the color gamut of the second display unit DU2 can be improved, thereby improving the color gamut of the display panel.
[0143] In some embodiments of the present disclosure, the first optical units LA of each display unit DU are connected to form a first optical unit layer covering multiple display units DU; and / or, the second optical units LC of each display unit DU are connected to form a second optical unit layer covering multiple display units DU.
[0144] It can be understood that the first optical units LA of the display units DU can be connected to form a first optical unit layer covering multiple display units DU; or the second optical units LC of the display units DU can be connected to form a second optical unit layer covering multiple display units DU; or the first optical units LA of the display units DU can be connected to form a first optical unit layer covering multiple display units DU, and the second optical units LC of the display units DU can be connected to form a second optical unit layer covering multiple display units DU (see Figure 47 ).
[0145] Furthermore, the first optical units LA of the display units DU are connected to form a first optical unit layer covering the multiple display units DU, and the second optical units LC of the display units DU are connected to form a second optical unit layer covering the multiple display units DU. The display panel in this example can be prepared in the following manner:
[0146] See also Figure 12, preparing a color filter unit CF; the color filter substrate includes a high-transmittance substrate such as a glass substrate. Taking the glass substrate as an example here, a light-shielding layer is deposited on the glass substrate. Specifically, a black matrix light-absorbing material is prepared on the glass substrate by coating or photolithography process as the light-shielding layer, and the light-shielding layer is patterned to form a plurality of openings in the light-shielding layer, each opening exposing a portion of the glass substrate, wherein every three openings correspond to a pixel unit, and each different opening includes a first color opening, a second color opening, and a third color opening. Finally, an inkjet printing process is used to print ink of corresponding colors in unused color openings to prepare the color filter unit CF.
[0147] See also Figure 13 , prepare a flat layer PLN on the color film unit CF; prepare a flat layer PLN on the side of the light-shielding layer away from the glass substrate through a process such as spin coating or deposition. This setting can avoid the phenomenon of light deflection when light passes through the color film unit CF, further improving the light efficiency of related devices.
[0148] See also Figure 14 , a liquid crystal layer CL is prepared on the flat layer PLN; a liquid crystal layer CL is prepared on the side of the flat layer PLN away from the color film unit CF by spin coating, and the liquid crystal layer CL is cured by ultraviolet irradiation (it can be understood that, in this embodiment, other methods can also be used to cure the liquid crystal layer CL).
[0149] See also Figure 15 、 Figure 16 A color conversion layer LB is prepared on the side of the liquid crystal layer CL away from the color filter unit CF. The color conversion layer LB is patterned to form a plurality of different color conversion openings, and the color conversion openings are arranged corresponding to the color openings of the color filter unit CF. Color conversion material is dripped into the color conversion openings.
[0150] See also Figure 17 A Bragg reflector DBR is prepared on the side of the color conversion layer LB away from the color filter unit CF to form a quantum dot substrate (not specifically marked in the drawings of this application).
[0151] The quantum dot substrate and the light-emitting unit LD are assembled into a cell, completing the preparation of the display panel in this example.
[0152] In another example of this embodiment, the following preparation method can also be used for preparation:
[0153] See also Figure 19, preparing a color filter unit CF; the color filter substrate includes a high-transmittance substrate such as a glass substrate. Taking the glass substrate as an example here, a light-shielding layer is deposited on the glass substrate. Specifically, a black matrix light-absorbing material is prepared on the glass substrate by coating or photolithography process as the light-shielding layer, and the light-shielding layer is patterned to form a plurality of openings in the light-shielding layer, each opening exposing a portion of the glass substrate, wherein every three openings correspond to a pixel unit, and each different opening includes a first color opening, a second color opening, and a third color opening. Finally, an inkjet printing process is used to print ink of corresponding colors in unused color openings to prepare the color filter unit CF.
[0154] See also Figure 20 , prepare a flat layer PLN on the color film unit CF; prepare a flat layer PLN on the side of the light-shielding layer away from the glass substrate through a process such as spin coating or deposition. This setting can avoid the phenomenon of light deflection when light passes through the color film unit CF, further improving the light efficiency of related devices.
[0155] See also Figure 21 , a Bragg reflector DBR is prepared on the flat layer PLN; and a Bragg reflector DBR is prepared on the side of the flat layer PLN away from the color film unit CF by spin coating.
[0156] See also Figure 22 、 Figure 23 A color conversion layer LB is prepared on the side of the Bragg reflector DBR away from the color filter unit CF, and the color conversion layer LB is patterned to form a plurality of different color conversion openings. The color conversion openings are arranged corresponding to the color openings of the color filter unit CF, and color conversion material is dripped into the color conversion openings.
[0157] See also Figure 24 A liquid crystal layer CL is prepared on the side of the color conversion layer LB away from the color filter unit CF, and the liquid crystal layer CL is cured by ultraviolet light to form a quantum dot substrate (not specifically marked in the drawings of this application).
[0158] The quantum dot substrate and the light-emitting unit LD are assembled into a cell, completing the preparation of the display panel in this example.
[0159] In some embodiments of the present disclosure, the first optical units LA of the display units DU are separated from each other; and / or the second optical units LC of the display units DU are separated from each other.
[0160] It can be understood that in one example of this embodiment, the first optical units LA of the display unit DU are isolated from each other, and the second optical units LC of the display unit DU are isolated from each other; or the first optical units LA of the display unit DU are isolated from each other; or the second optical units LC of the display unit DU are isolated from each other.
[0161] In some embodiments of the present disclosure, see Figure 48 , each display unit is isolated from each other.
[0162] The embodiment of the present disclosure also provides a display unit DU, which includes a light-emitting unit LD, a first optical unit LA, a color conversion layer LB and a second optical unit LC which are stacked in sequence; the light-emitting unit LD is used to provide excitation light; the color conversion layer LB is used to convert the excitation light into target light, wherein the wavelength of the target light is greater than the wavelength of the excitation light; the first optical unit LA exhibits a reflection-enhancing characteristic for the target light, and exhibits a transmittance-enhancing characteristic for the excitation light from the light-emitting unit LD side; the second optical unit LC exhibits a transmittance-enhancing characteristic for the target light, and exhibits a reflection-enhancing characteristic for the excitation light from the light-emitting unit LD side.
[0163] As an example, the display unit DU can be prepared in the following manner:
[0164] See also Figure 33 An N-type semiconductor layer NSCL is prepared on a sapphire substrate, a multi-layer quantum well layer MOW is prepared on a side of the N-type semiconductor layer NSCL away from the sapphire substrate, and a P-type semiconductor layer PSCL is prepared on a side of the multi-layer quantum well layer MOW away from the N-type semiconductor layer NSCL.
[0165] The hierarchical structure on the sapphire substrate SBT4 is flipped over to the temporary substrate TBT1 . At this time, the N-type semiconductor layer NSCL is close to the temporary substrate TBT1 , and the P-type semiconductor layer PSCL is located on the top of the hierarchical structure of the temporary substrate TBT1 .
[0166] A Bragg reflector DBR is fabricated on a side of the P-type semiconductor layer PSCL away from the temporary substrate TBT1.
[0167] A color conversion layer LB is prepared on the side of the Bragg reflector DBR away from the temporary substrate TBT1, and the color conversion layer LB is patterned to form a color conversion opening. The color conversion opening includes a portion of the Bragg reflector DBR, and a color conversion material is dripped into the color conversion opening. It can be understood that in this example, different color conversion materials can be dripped according to the light that the display unit DU needs to emit. For example, if the display unit needs to emit red light, a red color conversion material is dripped into the color conversion opening; if the display unit needs to emit green light, a green color conversion material is dripped into the color conversion opening; if the display unit needs to emit red and blue light, a red and blue conversion material is dripped into the color conversion opening.
[0168] A liquid crystal layer CL is formed on the side of the Bragg reflector DBR in the color conversion opening away from the temporary substrate TBT1.
[0169] A thin film encapsulation layer TFE is prepared on the side of the liquid crystal layer CL away from the temporary substrate TBT1. In some embodiments, the thin film encapsulation layer TFE may include an inorganic encapsulation layer and an organic encapsulation layer that are alternately stacked (not specifically marked in the drawings of the present application). The inorganic encapsulation layer can effectively block external moisture and oxygen, and prevent water and oxygen from invading the color conversion material and causing material aging of the color conversion material. Exemplarily, the thin film encapsulation layer TFE includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer (not specifically marked in the drawings of the present application) that are sequentially stacked on the side of the liquid crystal layer CL away from the temporary substrate TBT1. Of course, in other embodiments of the present disclosure, the display unit DU may not be provided with a thin film encapsulation layer TFE, but may use other methods to encapsulate and protect the pixel layer.
[0170] As another example, the display unit DU may also be prepared in the following manner:
[0171] See also Figure 41 An N-type semiconductor layer NSCL is prepared on a sapphire substrate SBT4, a multi-layer quantum well layer MOW is prepared on a side of the N-type semiconductor layer NSCL away from the sapphire substrate, and a P-type semiconductor layer PSCL is prepared on a side of the multi-layer quantum well layer MOW away from the N-type semiconductor layer NSCL.
[0172] See also Figure 42 , the hierarchical structure on the sapphire substrate SBT4 is flipped over to the temporary substrate TBT1 , at this time, the P-type semiconductor layer PSCL is close to the temporary substrate TBT1 , and the N-type semiconductor layer NSCL is located on the top.
[0173] See also Figure 43 A Bragg reflector DBR is prepared on the side of the N-type semiconductor layer NSCL away from the temporary substrate TBT1 (this is not specifically shown in the drawings of this application).
[0174] See also Figure 44 、 Figure 45 A color conversion layer LB is formed on the side of the Bragg reflector DBR away from the temporary substrate TBT1, and the color conversion layer LB is patterned to form a color conversion opening. A color conversion material is dripped into the color conversion opening. It will be understood that in this example, different color conversion materials can be dripped according to the light that the display unit DU needs to emit. For example, if the display unit needs to emit red light, a red color conversion material is dripped into the color conversion opening; if the display unit needs to emit green light, a green color conversion material is dripped into the color conversion opening; and if the display unit needs to emit blue light, a blue color conversion material is dripped into the color conversion opening.
[0175] See also Figure 46A liquid crystal layer CL is prepared on a side of the Bragg reflector DBR in the color conversion opening away from the temporary substrate TBT1, and the liquid crystal layer CL is located in the color conversion opening.
[0176] A thin film encapsulation layer TFE is prepared on the side of the Bragg reflector DBR away from the temporary substrate TBT1.
[0177] In some embodiments, the thin film encapsulation layer TFE may include an inorganic encapsulation layer and an organic encapsulation layer that are alternately stacked (not specifically marked in the drawings of this application). The inorganic encapsulation layer can effectively block external moisture and oxygen, preventing water and oxygen from invading the color conversion material and causing material aging of the color conversion material. Exemplarily, the thin film encapsulation layer TFE includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer (not specifically marked in the drawings of this application) stacked in sequence on the side of the liquid crystal layer CL away from the temporary substrate TBT1. Of course, in other embodiments of the present disclosure, the display unit DU may not be provided with a thin film encapsulation layer TFE, but may use other methods to encapsulate and protect the pixel layer.
[0178] The embodiment of the present disclosure further provides a display module, which includes any one of the display panels in the above-mentioned display panel embodiments.
[0179] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.
Claims
1. A display panel, characterized in that: The display unit includes an array of display units, the display unit including a light-emitting unit, a first optical unit, and a second optical unit stacked in sequence; the light-emitting unit is used to provide excitation light; the first optical unit exhibits an anti-reflection property for the excitation light from the light-emitting unit side; and the second optical unit exhibits an anti-reflection property for the excitation light from the light-emitting unit side. The display unit includes a first display unit, and the first display unit further includes a first color conversion layer located between the first optical unit and the second optical unit; The first color conversion layer is used to convert the excitation light into light of a first color, wherein the wavelength of the light of the first color is greater than the wavelength of the excitation light; The first optical unit exhibits a reflection-enhancing characteristic for the light of the first color coming from the side of the first color conversion layer; The second optical unit exhibits anti-reflection properties for the light of the first color coming from the side of the first color conversion layer.
2. The display panel according to claim 1, wherein: The first display unit includes a red display unit and a green display unit; the color conversion material layer of the red display unit is a red conversion material layer; the color conversion material layer of the green display unit is a green conversion material layer.
3. The display panel according to claim 1, wherein: The display unit further includes a second display unit; the second display unit includes a second color conversion layer located between the first optical unit and the second optical unit; The second color conversion layer is used to convert the excitation light into light of a second color, wherein the wavelength of the light of the second color is greater than the wavelength of the excitation light; The first optical unit exhibits a reflection-enhancing characteristic for the light of the second color coming from the second color conversion layer side; The second optical unit exhibits anti-reflection properties for light of the second color coming from the second color conversion layer side.
4. The display panel according to claim 1, wherein: The display unit further includes a second display unit; The output light of the second display unit is the excitation light.
5. The display panel according to claim 3, wherein: The display unit further includes a second display unit; The output light of the second display unit is the excitation light; the second display unit is not provided with the second color conversion layer.
6. The display panel according to claim 1, wherein: The first optical unit is a Bragg reflector or a liquid crystal layer; the second optical unit is a Bragg reflector or a liquid crystal layer.
7. The display panel according to claim 6, wherein: The type of the first optical unit is different from the type of the second optical unit.
8. The display panel according to claim 1, wherein: The first optical units of the display units are connected to form a first optical unit layer covering the plurality of display units; and / or the second optical units of the display units are connected to form a second optical unit layer covering the plurality of display units.
9. The display panel according to claim 1, wherein: The first optical units of the display units are separated from each other; and / or the second optical units of the display units are separated from each other.
10. The display panel according to claim 1, wherein The display units are isolated from each other.
11. The display panel according to any one of claims 1 to 10, wherein: The display unit further includes a color film unit; The color film unit is arranged on a side of the second optical unit away from the light emitting unit, and the color of the color film unit is the same as the light output color of the display unit.
12. A display unit, characterized in that: The display unit includes a light emitting unit, a first optical unit, a color conversion layer and a second optical unit which are stacked in sequence; The light emitting unit is used to provide excitation light; The color conversion layer is used to convert the excitation light into target light, wherein the wavelength of the target light is greater than the wavelength of the excitation light; The first optical unit exhibits a reflection-enhancing property for the target light and an anti-transmission property for the excitation light from the light-emitting unit side; The second optical unit exhibits an anti-transmission property for the target light and an anti-reflection property for the excitation light from the light-emitting unit side.
13. A display module, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 10.