CN117460370A - Display panel and display terminal - Google Patents
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- CN117460370A CN117460370A CN202311405928.3A CN202311405928A CN117460370A CN 117460370 A CN117460370 A CN 117460370A CN 202311405928 A CN202311405928 A CN 202311405928A CN 117460370 A CN117460370 A CN 117460370A
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/875—Arrangements for extracting light from the devices
- H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application discloses a display panel and a display terminal. The display panel comprises a substrate, a light-emitting layer and an optical adjusting layer, wherein the light-emitting layer comprises a plurality of light-emitting parts, and the light-emitting parts comprise a first sub-part and a second sub-part; the optical adjusting layer comprises a third sub-part and a fourth sub-part, the orthographic projection of the first sub-part on the substrate is overlapped with the orthographic projection of the third sub-part on the substrate, and the orthographic projection of the second sub-part on the substrate is overlapped with the orthographic projection of the fourth sub-part on the substrate; the thickness of the first sub-portion is greater than the thickness of the second sub-portion, and the thickness of the third sub-portion is less than the thickness of the fourth sub-portion. According to the color point adjusting device, the third sub-part is overlapped with the first sub-part, the fourth sub-part is overlapped with the second sub-part, the thickness of the first sub-part is larger than that of the second sub-part, and the thickness of the third sub-part is smaller than that of the fourth sub-part, so that the optical adjusting layer can be matched with the thickness of the light emitting layer, the thickness difference of the microcavity is reduced, and the color point problem is further improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display terminal.
Background
An OLED (Organic Light-Emitting Diode) display technology is a novel display technology, and is gradually paid attention to by unique advantages of low power consumption, high saturation, fast response time, wide viewing angle and the like, and takes a place in the technical field of panel display.
The luminous layer of the OLED display panel can be manufactured by adopting an ink-jet printing process, and the ink-jet printing process has the advantages of high material utilization rate, low production cost and short production period, but the ink-jet printing process has higher requirements on the evenness of the surface of the anode layer, and when the surface of the anode layer is uneven, the film thickness of the luminous layer is uneven, so that the color point of the display panel is affected.
Therefore, there is a need to improve the above technical problems.
Disclosure of Invention
The application provides a display panel and a display terminal, which are used for improving the technical problem that the color point of the display panel is affected by uneven film thickness of a light-emitting layer of the display panel.
In order to solve the technical problems, the technical scheme provided by the application is as follows:
the application provides a display panel, the display panel includes:
a substrate;
a light emitting layer disposed on the substrate, the light emitting layer including a plurality of light emitting portions, one of the light emitting portions including a first sub-portion and a second sub-portion distributed along a first direction;
the optical adjusting layer is arranged on one side, away from the substrate, of the light-emitting layer, and comprises a third sub-part and a fourth sub-part which are distributed along the first direction, the orthographic projection of the first sub-part on the substrate and the orthographic projection of the third sub-part on the substrate are overlapped, and the orthographic projection of the second sub-part on the substrate and the orthographic projection of the fourth sub-part on the substrate are overlapped;
the thickness of the first sub-portion is greater than that of the second sub-portion, the thickness of the third sub-portion is less than that of the fourth sub-portion, and the first direction is perpendicular to the light emitting direction of the display panel.
In the display panel of the present application, the sum of the product of the refractive index of the light emitting layer and the thickness of the first sub-portion, the product of the refractive index of the optical adjustment layer and the thickness of the third sub-portion is a first value, and the sum of the product of the refractive index of the light emitting layer and the thickness of the second sub-portion, the product of the refractive index of the optical adjustment layer and the thickness of the fourth sub-portion is a second value;
wherein the absolute value of the difference between the first value and the second value is 2kpi, wherein k is a natural number.
In the display panel of the present application, the thickness of the first sub-portion is greater than the thickness of the third sub-portion, and the thickness of the second sub-portion is less than the thickness of the fourth sub-portion.
In the display panel, the display panel comprises at least one pattern layer, wherein the pattern layer is arranged between the substrate and the light-emitting layer, and the orthographic projection part of the light-emitting part on the substrate is positioned in the orthographic projection of the pattern layer on the substrate;
wherein the total thickness of the pattern layer overlapping the first sub-portion is smaller than the total thickness of the pattern layer overlapping the second sub-portion.
In the display panel of the application, the display panel comprises an array layer, wherein the array layer comprises a grid layer, an active layer and a source drain layer which are arranged between the substrate and the light-emitting layer;
the pattern layer is at least one of the gate layer, the active layer and the source/drain layer.
In the display panel of the application, the display panel comprises a flat layer and an anode layer, wherein the anode layer is arranged on one side, close to the substrate, of the light-emitting layer, the flat layer is arranged on one side, close to the substrate, of the anode layer, and the anode layer is in contact with the light-emitting layer.
In the display panel of the present application, the display panel includes a cathode layer disposed between the light emitting layer and the optical adjustment layer, or disposed on a side of the optical adjustment layer facing away from the substrate.
In the display panel of the application, the display panel comprises a plurality of sub-pixels with different colors, one light-emitting part is arranged corresponding to one sub-pixel, the thicknesses of the first sub-parts of the sub-pixels with different colors are different, and the thicknesses of the second sub-parts of the sub-pixels with different colors are different.
In the display panel of the present application, the thicknesses of the third sub-portions of the sub-pixels of different colors are all different, and the thicknesses of the fourth sub-portions of the sub-pixels of different colors are all different.
The application also provides a display terminal, which comprises the display panel.
The beneficial effects are that: the application discloses a display panel and a display terminal. The display panel comprises a substrate, a light-emitting layer and an optical adjusting layer, wherein the light-emitting layer is arranged on the substrate and comprises a plurality of light-emitting parts, and one light-emitting part comprises a first sub-part and a second sub-part which are distributed along a first direction; the optical adjusting layer is arranged on one side, away from the substrate, of the light-emitting layer, and comprises a third sub-part and a fourth sub-part which are distributed along the first direction, the orthographic projection of the first sub-part on the substrate and the orthographic projection of the third sub-part on the substrate are overlapped, and the orthographic projection of the second sub-part on the substrate and the orthographic projection of the fourth sub-part on the substrate are overlapped; the thickness of the first sub-portion is greater than that of the second sub-portion, the thickness of the third sub-portion is less than that of the fourth sub-portion, and the first direction is perpendicular to the light emitting direction of the display panel. According to the color point adjusting device, the optical adjusting layer is arranged on the light emitting layer, the third sub-portion of the optical adjusting layer is overlapped with the first sub-portion of the light emitting layer, the fourth sub-portion of the optical adjusting layer is overlapped with the second sub-portion of the light emitting layer, the thickness of the first sub-portion is larger than that of the second sub-portion, and the thickness of the third sub-portion is smaller than that of the fourth sub-portion, so that the optical adjusting layer can be matched with the thickness of the light emitting layer, the difference of microcavity thicknesses is reduced, and the color point problem is further improved.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a process for fabricating a display panel using ink jet printing;
FIG. 3 is a schematic view of a partial enlarged structure of the sub-pixel in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the display panel of FIG. 3;
FIG. 5 is a schematic view of a partial enlarged structure at C in FIG. 4;
fig. 6 is a process diagram illustrating a process for fabricating an optical adjustment layer of a display panel according to the present application.
Reference numerals illustrate:
the pixel electrode includes a sub-pixel 1, a first region a, a second region B, a substrate 10, a light emitting layer 20, a light emitting portion 21, a first sub-portion 211, a second sub-portion 212, a first color sub-portion 210, a second color sub-portion 220, a third color sub-portion 230, an optical adjustment layer 30, a third sub-portion 31, a fourth sub-portion 32, an optical adjustment film layer 33, a pattern layer 40, a light shielding layer 41, an array layer 50, a thin film transistor 51, a gate layer 511, an active layer 512, a source drain layer 513, an insulating layer 515, an anode layer 71, a cathode layer 72, a planarization layer 11, a pixel defining layer 12, a first encapsulation layer 74, a second encapsulation layer 75, a third encapsulation layer 76, a thickness d1 of the first sub-portion, a thickness d2 of the third sub-portion, a thickness h1 of the second sub-portion, a thickness h2 of the fourth sub-portion, a refractive index n1 of the light emitting layer, a refractive index n2 of the optical adjustment layer, a print head 2, an ink droplet 26, and a photomask 3.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
As shown in fig. 1, the display panel includes a plurality of sub-pixels 1, and each sub-pixel 1 may display one color. The light emitting layer 20 of each sub-pixel 1 is made of different color inks. As shown in fig. 2, the light emitting layer 20 of the display panel may be manufactured using an inkjet printing process. In the inkjet printing process, the printing head 2 is provided with ink corresponding to the first color sub-section 210, the second color sub-section 220, and the third color sub-section 230. The display panel includes a pixel defining layer 12, and the pixel defining layer 12 includes a plurality of openings, one opening corresponding to each sub-pixel 1. By applying a certain pressure signal to the printing head 2, the printing head 2 can accurately drop the ink droplets 26 into the openings, and the ink in the openings is dried and baked to form the light-emitting portions 21. Compared with the luminescent layer 20 manufactured by the evaporation process, the luminescent layer 20 manufactured by the inkjet printing process has a remarkable advantage in material utilization rate. The material utilization rate of the ink-jet printing is more than 90%, and the material utilization rate of the vapor deposition process is about 10%.
However, the thickness of the light emitting portion 21 produced by inkjet printing is susceptible to process, and there is a problem in that the thickness is uneven. When the thickness of the light emitting part 21 is not uniform, color points and light emitting efficiency of the display panel may be affected, resulting in deviation of the color points of the display panel from a preset value and an increase in power consumption.
The present application provides a display panel, as shown in fig. 1 and 3 to 5, the display panel includes a substrate 10, a light emitting layer 20, and an optical adjustment layer 30, the light emitting layer 20 is disposed on the substrate 10, the light emitting layer 20 includes a plurality of light emitting portions 21, and one light emitting portion 21 includes a first sub-portion 211 and a second sub-portion 212 distributed along a first direction; the optical adjustment layer 30 is disposed on a side of the light-emitting layer 20 facing away from the substrate 10, and the optical adjustment layer 30 includes a third sub-portion 31 and a fourth sub-portion 32 distributed along the first direction, where the orthographic projection of the first sub-portion 211 on the substrate 10 overlaps with the orthographic projection of the third sub-portion 31 on the substrate 10, and the orthographic projection of the second sub-portion 212 on the substrate 10 overlaps with the orthographic projection of the fourth sub-portion 32 on the substrate 10; the thickness d1 of the first sub-portion is greater than the thickness h1 of the second sub-portion, the thickness d2 of the third sub-portion is less than the thickness h2 of the fourth sub-portion, and the first direction is perpendicular to the light emitting direction of the display panel.
In the present embodiment, the substrate 10 may be a flexible substrate or a rigid substrate, and the flexible substrate may be made of one of colorless Polyimide (PI), polycarbonate (PC), polynorbornene (PNB), polyethylene terephthalate (PET), and the like, but is not limited thereto. The material of the rigid substrate may be glass or the like, but is not limited thereto.
In the present embodiment, as shown in fig. 3 and 4, the display panel includes a plurality of sub-pixels 1, the light emitting layer 20 includes a plurality of light emitting parts 21, and one light emitting part 21 may correspond to one sub-pixel 1. The light emitting colors of the light emitting portions 21 may be different, and for example, the light emitting portions 21 may include a first color sub-portion 210, a second color sub-portion 220, and a third color sub-portion 230. The light emission colors of the first, second, and third color sub-sections 210, 220, and 230 may be one of red, green, and blue, respectively, but are not limited thereto.
One light emitting portion 21 includes a first sub-portion 211 and a second sub-portion 212 distributed along a first direction, and a thickness d1 of the first sub-portion is greater than a thickness h1 of the second sub-portion. The first sub-portion 211 and the second sub-portion 212 may be disposed continuously.
In the present application, the thickness refers to a dimension in a direction perpendicular to the display surface. The light emitting direction of the display panel is perpendicular to the display surface, and the first direction is a direction perpendicular to the light emitting direction of the display panel, that is, the first direction is parallel to the display surface.
In this embodiment, the optical adjustment layer 30 is disposed on the light emitting layer 20, and the optical adjustment layer 30 includes a third sub-portion 31 and a fourth sub-portion 32 distributed along the first direction, the third sub-portion 31 is disposed in alignment with the first sub-portion 211, the fourth sub-portion 32 is disposed in alignment with the second sub-portion 212, the thickness d1 of the first sub-portion is greater than the thickness h1 of the second sub-portion, and the thickness d2 of the third sub-portion is less than the thickness h2 of the fourth sub-portion. By arranging the optical adjustment layer 30 on the light-emitting layer 20, the third sub-portion 31 of the optical adjustment layer 30 is overlapped with the first sub-portion 211 of the light-emitting layer 20, the fourth sub-portion 32 of the optical adjustment layer 30 is overlapped with the second sub-portion 212 of the light-emitting layer 20, the thickness d1 of the first sub-portion is larger than the thickness h1 of the second sub-portion, and the thickness d2 of the third sub-portion is smaller than the thickness h2 of the fourth sub-portion, so that the optical adjustment layer 30 can be matched with the thickness of the light-emitting layer 20, the microcavity thickness difference is reduced, and the color point problem is further improved.
In this application, the display panel further includes an anode layer 71 and a cathode layer 72, the anode layer 71 is disposed on a side of the light-emitting layer 20 near the substrate 10, the cathode layer 72 is disposed on a side of the light-emitting layer 20 facing away from the substrate 10, and the cathode layer 72 is disposed as a whole. The anode layer 71 serves to provide holes, and the cathode layer 72 serves to provide electrons, which recombine in the light-emitting layer 20 to emit light.
In this embodiment, as shown in fig. 4, the display panel further includes a packaging structure, where the packaging structure is used to package the light-emitting layer 20, and prevent moisture from invading the light-emitting layer 20, which affects the lifetime of the display panel. The package structure may be a thin film package. The package structure includes a stacked first package layer 74, second package layer 75, and third package layer 76. The first and third encapsulation layers 74 and 76 may be inorganic materials, and the second encapsulation layer 75 may be organic materials. The first encapsulation layer 74, the second encapsulation layer 75 and the third encapsulation layer 76 are all arranged in a whole layer.
In the display panel of the present application, as shown in fig. 5, fig. 5 is a partially enlarged schematic structural view at C in fig. 4. The sum of the product of the refractive index of the light emitting layer 20 and the thickness d1 of the first sub-portion, the product of the refractive index n2 of the optical adjustment layer and the thickness d2 of the third sub-portion is a first value, and the sum of the product of the refractive index of the light emitting layer 20 and the thickness h1 of the second sub-portion, the product of the refractive index n2 of the optical adjustment layer and the thickness h2 of the fourth sub-portion is a second value; wherein the absolute value of the difference between the first value and the second value is 2 kpi, wherein k is a natural number. That is, |n1×d1+n2×d2- (n1×h1+n2×h2) |=2kpi. Where n1 x d1 is the optical thickness of the first sub-portion 211, n2 x d2 is the optical thickness of the third sub-portion 31, n1 x h1 is the optical thickness of the second sub-portion 212, and n2 x h2 is the optical thickness of the fourth sub-portion 32. Optical thickness refers to the product of the geometric thickness and the refractive index of the film layer.
For convenience of explanation, each light emitting part 21 is divided into at least a first region a and a second region B, wherein the first and third sub-parts 211 and 31 are located in the first region a, and the second and fourth sub-parts 212 and 32 are located in the second region B.
By the arrangement, the optical total thickness of the first area A and the optical total thickness of the second area B can be different by an integral multiple of 2 pi, so that microcavity structures of the first area A and the second area B are matched, color points of the first area A and the second area B are close to a preset value, and color gamut is improved.
When another film layer is further disposed on the side of the optical adjustment layer 30 facing away from the light emitting layer 20, the sum of the optical thicknesses of the first sub-portion 211 of the first region a and all the film layers on the first sub-portion 211 is assumed to be a third value, and the sum of the optical thicknesses of the second sub-portion 212 of the second region B and all the film layers on the second sub-portion 212 is assumed to be a fourth value, the absolute value of the difference between the third value and the fourth value is 2kpi, where k is a natural number.
All the film layers on the first sub-portion 211 refer to the film layers located on the side of the first sub-portion 211 facing away from the substrate 10 and located in the first area a; all the film layers on the second sub-portion 212 refer to the film layers located on the side of the second sub-portion 212 facing away from the substrate 10 and located in the second area B. By the arrangement, microcavity structures of the first area A and the second area B can be matched, so that color points of the first area A and the second area B are close to preset values, and color gamut is improved.
It should be understood that a portion of the film layer in the display panel is disposed as an entire layer, and the entire layer has a uniform thickness, and thus, the entire layer has the same optical thickness in the first region a and the second region B. Therefore, the film layer arranged on the whole layer does not influence the matching of the microcavity structure.
In the display panel of the present application, as shown in fig. 5, the thickness d1 of the first sub-portion is greater than the thickness d2 of the third sub-portion, and the thickness h1 of the second sub-portion is less than the thickness h2 of the fourth sub-portion. Through the arrangement, the thicknesses d2 of the first sub-portion 211 and the third sub-portion can be matched with the microcavity structure, and the thicknesses h2 of the second sub-portion 212 and the fourth sub-portion can be matched with the microcavity structure, so that the color point problem is improved.
In the display panel of the present application, as shown in fig. 3 and 4, the display panel includes at least one pattern layer 40, the pattern layer 40 is disposed between the substrate 10 and the light emitting layer 20, and the orthographic projection portion of the light emitting portion 21 on the substrate 10 is located in the orthographic projection of the pattern layer 40 on the substrate 10; wherein the total thickness of the pattern layer 40 overlapped with the first sub-portion 211 is smaller than the total thickness of the pattern layer 40 overlapped with the second sub-portion 212.
In this embodiment, the display panel includes at least one pattern layer 40. The pattern layer 40 refers to a film layer formed through patterning process. In the display panel, a part of the film layer needs to be subjected to a patterning process, so that corresponding functions are realized. Another portion of the film may be an entire layer, such as insulating layer 515. The insulating layer 515 is provided entirely with a uniform thickness.
The insulating layer 515 may be any one of silicon nitride, silicon oxide, silicon oxynitride, or the like or a stack thereof. The insulating layer 515 may be formed by chemical vapor deposition (Chemical Vapor Deposition, CVD). The insulating layer 515 is disposed between the pattern layers 40 for insulation between adjacent pattern layers 40. Note that, the film thickness of the insulating layer 515 in fig. 4 is only schematically shown, and does not represent the actual thickness thereof, and the insulating layer 515 of the same layer has a uniform thickness.
Since the pattern layer 40 is distributed in a partial area of the display panel, the total thickness of the film layers of the display panel is affected by the number and thickness of the film layers of the pattern layer 40.
In the present embodiment, the light emitting part 21 overlaps at least one pattern layer 40, wherein the total thickness of the pattern layer 40 overlapping the first sub-part 211 is smaller than the total thickness of the pattern layer 40 overlapping the second sub-part 212. Since the entire layer has a uniform thickness, the total thickness of the film under the first sub-portion 211 is smaller than the total thickness of the film under the second sub-portion 212. That is, the distance between the lower surface of the first sub-portion 211 and the upper surface of the substrate 10 is smaller than the distance between the lower surface of the second sub-portion 212 and the upper surface of the substrate 10, so that the film layer under the light emitting portion 21 has an uneven surface.
Since ink is laid in the opening at the time of ink jet printing, when the film layer under the light emitting portion 21 has an uneven surface, the thickness of the light emitting portion 21 may be different. Since the lower surface of the first sub-portion 211 is closer to the substrate 10 than the lower surface of the second sub-portion 212, the thickness d1 of the first sub-portion may be greater than the thickness h1 of the second sub-portion.
In the display panel of the present application, as shown in fig. 4, the display panel includes an array layer 50, the array layer 50 including a gate layer 511, an active layer 512, and a source drain layer 513 disposed between a substrate 10 and a light emitting layer 20; the pattern layer 40 is at least one of the gate layer 511, the active layer 512 and the source/drain layer 513.
In this embodiment, the array layer 50 is provided with a driving circuit, and the array layer 50 is used to control the emission of the sub-pixels 1. The array layer 50 includes a thin film transistor 51 and a trace, the thin film transistor 51 includes a gate electrode, an active portion, a source electrode and a drain electrode, the gate electrode is located on the gate electrode layer 511, the active portion is located on the active layer 512, and the source electrode and the drain electrode are located on the source-drain electrode layer 513. The pattern layer 40 may be at least one of a gate layer 511, an active layer 512, and a source drain layer 513.
Optionally, in some embodiments, the array layer 50 further includes a light shielding layer 41, where the light shielding layer 41 is disposed below the active portion, and the pattern of the light shielding layer 41 may correspond to the pattern of the active portion, and the orthographic projection of the active portion on the light shielding layer 41 is located in the light shielding layer 41. The light shielding layer 41 can block light incident from the substrate 10 side from irradiating the active portion, and prevent the active portion from being irradiated with light to cause electrical deterioration. The pattern layer 40 may include a light shielding layer 41.
As shown in fig. 3, part of the pattern layer 40 overlaps the light emitting portion 21, the topography of the region where the pattern layer 40 is provided is high, and the topography of the region where the pattern layer 40 is not provided is low, that is, the topography under the light emitting portion 21 is uneven, thereby causing the thickness of the light emitting portion 21 to exhibit a difference.
In the display panel of the present application, as shown in fig. 4, the display panel includes a flat layer 11 and an anode layer 71, the anode layer 71 is disposed on a side of the light-emitting layer 20 close to the substrate 10, the flat layer 11 is disposed on a side of the anode layer 71 close to the substrate 10, and the anode layer 71 is disposed in contact with the light-emitting layer 20.
In the present embodiment, the material of the planarization layer 11 may be an organic material, such as polyimide, benzocyclobutene series resin, or acrylate, or the like. The planarization layer 11 has a leveling property, and can reduce unevenness of the lower surface of the light emitting part 21 due to the thickness of the pattern layer 40, thereby reducing a difference in microcavity structure of the first region a and the second region B, and improving a color point problem.
In this embodiment, the anode layer 71 is metal. The anode layer 71 is electrically connected to the drain of the thin film transistor 51, and the thin film transistor 51 is used to supply a driving voltage to the anode layer 71. The anode layer 71 may be a total reflection metal layer, and the material of the anode layer 71 may be an Indium Tin Oxide (ITO) layer, silver (Ag), or the like, but is not limited thereto.
In the display panel of the present application, the display panel includes a cathode layer 72, and the cathode layer 72 is disposed between the light emitting layer 20 and the optical adjustment layer 30, or the cathode layer 72 is disposed on a side of the optical adjustment layer 30 facing away from the substrate 10.
Optionally, in some embodiments, a cathode layer 72 is disposed between the light emitting layer 20 and the optical modifier layer 30.
Alternatively, in some embodiments, as shown in fig. 4, the cathode layer 72 is disposed on a side of the optical adjustment layer 30 facing away from the substrate 10.
Since the cathode layer 72 is provided as a whole, the cathode layer 72 does not affect microcavity structure matching. The material of the cathode layer 72 may be, but not limited to, magnesium, silver, or the like.
In embodiments of the present application, the metal layer may be formed using physical vapor deposition (Physical Vapor Deposition, PVD), but is not limited thereto.
In the display panel of the present application, the display panel includes a plurality of sub-pixels 1 with different colors, one light emitting portion 21 is disposed corresponding to one sub-pixel 1, the thicknesses d1 of the first sub-portions of the sub-pixels 1 with different colors are all different, and the thicknesses h1 of the second sub-portions of the sub-pixels 1 with different colors are all different.
In this embodiment, the display panel includes a plurality of sub-pixels 1 with different colors, and the light emitting portions 21 of the sub-pixels 1 have different light emitting colors, for example, the light emitting portions 21 may include a first color sub-portion 210, a second color sub-portion 220, and a third color sub-portion 230. The light emission colors of the first, second, and third color sub-sections 210, 220, and 230 may be one of red, green, and blue, respectively, but are not limited thereto.
The thickness d1 of the first sub-portion of the first color sub-portion 210, the thickness d1 of the first sub-portion of the second color sub-portion 220, and the thickness d1 of the first sub-portion of the third color sub-portion 230 are all different; the thickness h1 of the second sub-portion of the first color sub-portion 210, the thickness h1 of the second sub-portion of the second color sub-portion 220, and the thickness h1 of the second sub-portion of the third color sub-portion 230 are different. By the above arrangement, the respective light emitting sections 21 can be made to better match the color points of the sub-pixels 1 of different colors, improving the color point problem.
Further, in the present embodiment, the thicknesses d2 of the third sub-portions of the sub-pixels 1 of different colors are different, and the thicknesses h2 of the fourth sub-portions of the sub-pixels 1 of different colors are different. Through the arrangement, the optical dimming layer can be better matched with the color points of the sub-pixels 1 with different colors, and the color point problem is improved.
In the display panel of the present application, the optical adjustment layer 30 is a transparent material. For example, the optical adjustment layer 30 may be an organic material such as polyimide, but is not limited thereto.
As shown in fig. 6, the optical adjustment layer 30 may be fabricated using patterning process. The patterning process comprises the working procedures of photoresist coating, exposure and development, etching and the like. An optical adjustment film layer 33 is formed on the light-emitting layer 20, then a photoresist is coated on the optical adjustment film layer 33, and exposure and development are performed by using a photomask 3, wherein the photomask 3 may be a Half Tone photomask (Half Tone Mask) or a Gray Tone Mask (Gray Tone Mask). By making the luminous fluxes and the like of the first region a and the second region B different, the etching thickness of the optical adjustment film layer 33 can be made different, and thus the thickness d2 of the third sub-portion and the thickness h2 of the fourth sub-portion can be made different.
In some embodiments, the optical adjustment film layer 33 may be etched by post-exposure gas, so as to achieve that the thickness d2 of the third sub-portion is different from the thickness h2 of the fourth sub-portion. The present application is not limited to the process of fabricating the optical modulation layer 30.
The application also provides a display terminal, which comprises the display panel.
In this embodiment, the display terminal may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display panel and the display terminal provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display panel, comprising:
a substrate;
a light emitting layer disposed on the substrate, the light emitting layer including a plurality of light emitting portions, one of the light emitting portions including a first sub-portion and a second sub-portion distributed along a first direction;
the optical adjusting layer is arranged on one side, away from the substrate, of the light-emitting layer, and comprises a third sub-part and a fourth sub-part which are distributed along the first direction, the orthographic projection of the first sub-part on the substrate and the orthographic projection of the third sub-part on the substrate are overlapped, and the orthographic projection of the second sub-part on the substrate and the orthographic projection of the fourth sub-part on the substrate are overlapped;
the thickness of the first sub-portion is greater than that of the second sub-portion, the thickness of the third sub-portion is less than that of the fourth sub-portion, and the first direction is perpendicular to the light emitting direction of the display panel.
2. The display panel according to claim 1, wherein a sum of a product of a refractive index of the light emitting layer and a thickness of the first sub-portion, a product of a refractive index of the optical adjustment layer and a thickness of the third sub-portion is a first value, and a sum of a product of a refractive index of the light emitting layer and a thickness of the second sub-portion, a product of a refractive index of the optical adjustment layer and a thickness of the fourth sub-portion is a second value;
the absolute value of the difference between the first value and the second value is 2kpi, wherein k is a natural number.
3. The display panel of claim 2, wherein the first sub-portion has a thickness greater than a thickness of the third sub-portion, and the second sub-portion has a thickness less than a thickness of the fourth sub-portion.
4. The display panel of claim 2, wherein the display panel comprises at least one pattern layer disposed between the substrate and the light emitting layer, a front projection of the light emitting portion on the substrate being located within a front projection of the pattern layer on the substrate;
wherein the total thickness of the pattern layer overlapping the first sub-portion is smaller than the total thickness of the pattern layer overlapping the second sub-portion.
5. The display panel according to claim 4, wherein the display panel comprises an array layer including a gate layer, an active layer, and a source drain layer disposed between the substrate and the light emitting layer;
the pattern layer is at least one of the gate layer, the active layer and the source/drain layer.
6. The display panel according to claim 1, wherein the display panel includes a flat layer and an anode layer, the anode layer is disposed on a side of the light emitting layer adjacent to the substrate, the flat layer is disposed on a side of the anode layer adjacent to the substrate, and the anode layer is disposed in contact with the light emitting layer.
7. The display panel according to claim 1, wherein the display panel comprises a cathode layer disposed between the light emitting layer and the optical adjustment layer or disposed on a side of the optical adjustment layer facing away from the substrate.
8. The display panel according to claim 1, wherein the display panel includes a plurality of sub-pixels having different colors, one of the light emitting portions is provided corresponding to one of the sub-pixels, the thicknesses of the first sub-portions of the sub-pixels having different colors are different, and the thicknesses of the second sub-portions of the sub-pixels having different colors are different.
9. The display panel of claim 8, wherein the third sub-portions of the sub-pixels of different colors each have a different thickness, and the fourth sub-portions of the sub-pixels of different colors each have a different thickness.
10. A display terminal comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405928.3A CN117460370A (en) | 2023-10-26 | 2023-10-26 | Display panel and display terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405928.3A CN117460370A (en) | 2023-10-26 | 2023-10-26 | Display panel and display terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117460370A true CN117460370A (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311405928.3A Pending CN117460370A (en) | 2023-10-26 | 2023-10-26 | Display panel and display terminal |
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| Country | Link |
|---|---|
| CN (1) | CN117460370A (en) |
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2023
- 2023-10-26 CN CN202311405928.3A patent/CN117460370A/en active Pending
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