CN117337069A - Display module, display device and preparation method - Google Patents
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- 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
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Abstract
The invention discloses a display module, a display device and a preparation method, and belongs to the technical field of display. The display module includes: a color resist layer and a planarization layer overlying the color resist layer; the color resistance layer at least comprises two color resistance units with different colors, the slopes of the first surfaces of the color resistance units are different, wherein the first surfaces are surfaces of emergent rays of the color resistance layer, and the slopes are included angles between the first surfaces and the plane where the flat layer is located. Therefore, the slope of the surface of the emergent light of each color resistance unit is different, the length of the path of the light passing through each color resistance unit is different, the color resistance units and the flat layer are made of two different materials, the refractive indexes of the emergent light on the color resistance units and the flat layer are also different, the length of the path of the light passing through the color resistance units and the flat layer with different colors is different, and the intensity of the emergent light is further enhanced, so that the display effect of the display module is improved.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display module, a display device and a preparation method.
Background
Compared with the LCD display technology, the Organic Light Emitting Diode (OLED) is a novel display technology, has the characteristics of active light emission, real color, infinite contrast, zero delay, transparent display, flexible display, free-Form display (Free-Form D insulating shielding play) and the like, and is a next generation display technology capable of replacing the LCD display technology. The OLED display technology does not need a backlight source, so that the structure is simpler than that of an LCD, and the volume of a display product can be lighter and thinner. White light organic light emitting diode (WOLED) is mainly applied in large-size panel display technology, and the WOLED technology is different from the side-by-side (side-by-side) RGB technology which is widely applied in small size, and has the biggest advantage that a Fine Metal Mask (FMM) is not needed in the process, so that the equipment cost can be greatly reduced.
However, in the microcavity structure of the display module, because the wavelengths of the different colors are different, the cavity length required by the red light is the largest, the cavity length required by the green light is the second time, and the cavity length required by the blue light is the smallest, so that the display module is difficult to meet the requirements of the cavity lengths of the emergent rays of the different colors, and the intensity of the emergent rays of the different colors of the display module cannot be respectively enhanced, and the display effect of the display module is reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a display module, a display device and a preparation method, which can solve the problem that the display module cannot enable the intensity of emergent rays with different colors of the display module to be respectively enhanced.
In a first aspect, an embodiment of the present invention provides a display module, including:
a color resist layer and a planarization layer overlying the color resist layer;
the color resistance layer at least comprises two color resistance units with different colors, and the slopes of the first surfaces of the color resistance units are different, wherein the first surfaces are surfaces of the color resistance layer for emitting light, and the slopes are included angles between the first surfaces and the plane where the flat layer is located.
Optionally, the color resistance layer includes any two of a red pixel color resistance unit, a green pixel color resistance unit and a blue pixel color resistance unit;
the slope of the first surface of the red pixel color resistance unit is larger than that of the first surface of the green pixel color resistance unit, and the slope of the first surface of the green pixel color resistance unit is larger than that of the first surface of the blue pixel color resistance unit.
Optionally, the color resistance layer includes a red pixel color resistance unit, a green pixel color resistance unit, and a blue pixel color resistance unit;
the slope of the first surface of the red pixel color resistance unit is larger than that of the first surface of the green pixel color resistance unit, and the slope of the first surface of the green pixel color resistance unit is larger than that of the first surface of the blue pixel color resistance unit.
Optionally, the cross section of the red pixel color resistance unit on the first plane is a right triangle, the cross section of the green pixel color resistance unit on the first plane is a first right trapezoid, and the cross section of the blue pixel color resistance unit on the first plane is a second right trapezoid;
the right triangle is provided with a right triangle, a first right trapezoid and a second right trapezoid, wherein the hypotenuse of the right triangle is positioned on the first surface of the red pixel color resistance unit, the hypotenuse of the first right trapezoid is positioned on the first surface of the green pixel color resistance unit, the hypotenuse of the second right trapezoid is positioned on the first surface of the blue pixel color resistance unit, and the first plane is a plane perpendicular to the plane where the flat layer is positioned.
Optionally, the length of the right angle side of the right triangle in the first direction, the length of the long right angle side of the first right angle trapezoid in the first direction, and the length of the long right angle side of the second right angle trapezoid in the first direction are all equal, the length of the right angle side of the right angle triangle in the second direction, the length of the right angle side of the first right angle trapezoid in the second direction, and the length of the right angle side of the second right angle trapezoid in the second direction are all equal, wherein the first direction is a direction perpendicular to a plane where the flat layer is located, and the second direction is perpendicular to the first direction.
Optionally, the cross section of the red pixel color resistance unit on the first plane is a first right triangle, the cross section of the green pixel color resistance unit on the first plane is a second right triangle, and the cross section of the blue pixel color resistance unit on the first plane is a third right triangle;
the hypotenuse of the first right triangle is located on the first surface of the red pixel color resistance unit, the hypotenuse of the second right triangle is located on the first surface of the green pixel color resistance unit, the hypotenuse of the third right triangle is located on the first surface of the blue pixel color resistance unit, and the first plane is a plane perpendicular to the plane where the flat layer is located.
Optionally, the length of the right angle side of the first right angle triangle in the first direction, the length of the right angle side of the second right angle triangle in the first direction and the length of the right angle side of the third right angle triangle in the first direction are equal;
the length of the right angle side of the first right angle triangle in the second direction is smaller than that of the right angle side of the second right angle triangle in the second direction, the length of the right angle side of the second right angle triangle in the second direction is smaller than that of the right angle side of the third right angle triangle in the second direction, wherein the first direction is perpendicular to the plane where the flat layer is located, and the second direction is perpendicular to the first direction.
Optionally, the display module further includes a reflective electrode layer, an organic light emitting layer, and a common electrode layer;
the organic light emitting layer is located between the reflective electrode layer and the planarization layer, and the common electrode layer covers the planarization layer.
In a second aspect, an embodiment of the present invention further provides a display device, where the display device includes the display module set according to any one of the embodiments of the first aspect.
In a third aspect, an embodiment of the present invention further provides a preparation method, configured to prepare the display module set according to any one of the embodiments of the first aspect, where the preparation method includes:
forming a color resistance layer, an organic light-emitting layer and a reflecting electrode layer which are stacked;
performing exposure etching on the color resistance layer to form at least two color resistance units with different colors, wherein the slopes of the first surfaces of the color resistance units are different, the first surfaces are surfaces for emitting light rays of the color resistance layer, and the slopes are included angles between the first surfaces and a plane where the flat layer is located;
filling a flat layer between the color resistance layer and the organic light-emitting layer, and enabling the flat layer to be away from the organic light-emitting layer to be a plane;
and covering the common electrode layer on the flat layer.
In the embodiment of the invention, the color resistance layer at least comprises two color resistance units with different colors, the slopes of the first surfaces of the color resistance units are different, the first surfaces are surfaces of emergent rays of the color resistance layer, the slopes are included angles between planes of the first surfaces and the flat layers, so that the slopes of the surfaces of emergent rays of each color resistance unit are different, the lengths of paths of the rays passing through each color resistance unit are different, the color resistance units and the flat layers are made of two different materials, the refractive indexes of the emergent rays on the color resistance units and the flat layers are also different, and the lengths of paths of the rays passing through the color resistance units with different colors and the flat layers are different, so that the intensity of the emergent rays is enhanced. Therefore, the intensity of the emergent light rays with different colors is positively correlated with the light ray path, and the gradient of the color resistance units with different colors on the first surface is changed, so that the lengths of the paths of the emergent light rays passing through the color resistance units with different colors and the flat layer are different, the emergent light rays with different colors are respectively increased, and the display effect of the display module is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows one of schematic structural diagrams of a display module according to an embodiment of the present invention;
FIG. 2 is a second schematic diagram of a display module according to an embodiment of the invention;
FIG. 3 is a third schematic diagram of a display module according to an embodiment of the invention;
FIG. 4 shows a fourth schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 5 shows a fifth schematic structural diagram of a display module according to an embodiment of the invention.
Reference numerals:
1: a color resist layer; 2: a flat layer; 3: a reflective electrode layer; 4: an organic light emitting layer; 5: a common electrode layer; 11: a red pixel color resistance unit; 12: a green pixel color resistance unit; 13: and a blue pixel color resistance unit.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments obtained by a person skilled in the art based on the embodiments provided by the present invention fall within the scope of protection of the present invention.
Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and its other forms such as the third person referring to the singular form "comprise" and the present word "comprising" are to be construed as open, inclusive meaning, i.e. as "comprising, but not limited to. In the description of the present specification, the terms "one embodiment", "some embodiments", "example embodiment", "example", "specific example", or "some examples" and the like are intended to indicate that a specific feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present invention. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In describing some embodiments, the expression "electrically connected" and its derivatives may be used. For example, the term "electrically connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other.
"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.
The use of "configured to" herein is meant to be open and inclusive and does not exclude devices adapted or configured to perform additional tasks or steps.
As used herein, "approximately" includes the stated values as well as average values within an acceptable deviation range of the particular values as determined by one of ordinary skill in the art in view of the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system).
The term "same layer" as used herein refers to a layer structure formed by forming a film layer for forming a specific pattern by the same film forming process and then forming the film layer by one patterning process using the same mask plate. Depending on the particular pattern, a patterning process may include multiple exposure, development, or etching processes, and the particular patterns in the formed layer structure may be continuous or discontinuous, and may be at different heights or have different thicknesses. In contrast, the "different layer" means a layer structure formed by forming a film layer for forming a specific pattern by using a corresponding film forming process, respectively, and then patterning the film layer by using a corresponding mask, for example, the "two-layer structure different layer arrangement" means that two layer structures are formed under corresponding process steps (film forming process and patterning process), respectively.
Exemplary embodiments are described herein with reference to cross-sectional and/or plan views as idealized exemplary figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.
In a first aspect, an embodiment of the present invention provides a display module, and fig. 1 shows a schematic structural diagram of the display module provided in the embodiment of the present invention, as shown in fig. 1, where the display module includes: a color resist layer 1 and a flat layer 2 covering the color resist layer 1.
The color resistance layer 1 at least comprises two color resistance units with different colors, wherein the slopes of the first surfaces of the color resistance units are different, the first surfaces are surfaces of the color resistance layer 1 for emitting light, and the slopes are included angles between the first surfaces and the plane where the flat layer 2 is located.
As can be seen from the foregoing embodiments, in the embodiment of the present invention, since the color resist layer 1 includes at least two color resist units of different colors, the slopes of the first surfaces of the color resist units are different, the first surfaces are the surfaces of the color resist layer 1 that emit light, and the slopes are the included angles between the first surfaces and the plane where the flat layer 2 is located, so that the slopes of the surfaces of the light emitted by each color resist unit are different, the lengths of the paths of the light passing through each color resist unit are different, and the refractive indexes of the light emitted by the color resist unit and the flat layer 2 are also different, so that the lengths of the paths of the light passing through the color resist unit and the flat layer 2 of different colors are different, and the intensity of the light emitted by the color resist unit is further enhanced. Therefore, the intensity of the emergent light rays with different colors is positively correlated with the light ray path, so that the lengths of the paths of the emergent light rays passing through the color resistance units with different colors and the flat layer 2 are different by changing the slope of the color resistance units with different colors on the first surface, the emergent light rays with different colors are respectively increased, and the display effect of the display module is improved.
Note that, the specific material of the planarization layer 2 in the above embodiment is not limited. For example, the above-mentioned flat layer 2 may be made of an organic light-transmitting material, and specifically, the organic light-transmitting material may be any one of polystyrene, polycarbonate, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, acryl and acrylic; alternatively, the planarization layer 2 may be made of an inorganic light-transmitting material, and the inorganic light-transmitting material may be an optical glass. Thus, in a specific embodiment, the planarization layer 2 covers the color surface of the color resist element from which light is emitted, or the planarization layer 2 is filled between every two adjacent color resist elements.
In addition, the color blocking layer 1 is a layer of colors forming the CIE color gamut with three primary colors of light, and the color blocking layer 1 may include at least two of the patterned red pixel color blocking units 11, green pixel color blocking units 12 and blue pixel color blocking units 13, which are determined according to practical requirements. The backlight forms red light, green light and blue light respectively through the red pixel color resistance unit 11, the green pixel color resistance unit 12 and the blue pixel color resistance unit 13, so that the display effect required by the display module can be displayed.
Further described, the display module further comprises a reflective electrode layer 3, an organic light-emitting layer 4 and a common electrode layer 5; the organic light emitting layer 4 is located between the reflective electrode layer 3 and the planarization layer 2, and the common electrode layer 5 is covered on the planarization layer 2.
Specifically, in this embodiment, the common electrode layer 5 is disposed on the first side of the flat layer 2, the organic light emitting layer 4 is disposed on the other side of the flat layer 2, and the reflective electrode layer 3 is disposed on the side of the organic light emitting layer 4 away from the flat layer 2, for reflecting light emitted from the organic light emitting layer 4 and light refracted or reflected back to the reflective electrode layer 3. The thickness of the reflective electrode layer 3 may be 15 nm, and the material of the common electrode layer 5 may be aluminum, magnesium, silver, or an alloy of these metals. The thickness of the reflective electrode layer 3 may be 200 nm, and the material of the reflective electrode layer 3 may be aluminum, silver, or an alloy of these metals. In the embodiment of the present invention, the common electrode layer 5 may be a cathode of the organic light emitting layer 4, and the reflective electrode layer 3 may be an anode of the organic light emitting layer 4, or the common electrode layer 5 may be an anode of the organic light emitting layer 4, and the reflective electrode layer 3 may be a cathode of the organic light emitting layer 4.
In addition, microcavity effect (i.e., microcavity effect) means that the photon density of different energy states is redistributed so that only light of a specific wavelength can be emitted at a specific angle after conforming to the resonance mode. Based on the principle of microcavity effect, the more resonant modes can exist in the microcavity when the microcavity is long enough, so that more photons with different wavelengths can be allowed to exit the cavity at a specific angle, and the display module can realize white light display. In the embodiment of the invention, the cavity length (microcavity length) of the display module is the distance between the reflective electrode layer 3 and the common electrode layer 5, wherein the cavity length required by red light is maximum, the cavity length required by green light is secondary, and the cavity length required by blue light is minimum because the wavelengths of different colors are different (red light is 700 nanometers, green light is 546.1 nanometers, and blue light is 435.8 nanometers). In addition, the reflection electrode layer 3 and the common electrode layer 5 are of the same physical distance, so that in the embodiment of the invention, the slopes of the first surfaces of the different color resistance units are different, so that the slopes of the surfaces of the emergent rays of each color resistance unit are different, the lengths of the paths of the rays passing through each color resistance unit are different, the color resistance units and the flat layer 2 are of two different materials, the refractive indexes of the emergent rays on the color resistance units and the flat layer 2 are also different, the lengths of the paths of the rays passing through the color resistance units and the flat layer 2 are different, the paths of the emergent rays after the lengths of the cavities of different colors pass through the refraction of the color resistance units are further different, the lengths of the cavities of the rays of different colors are further different, and the intensity of the emergent rays can be further enhanced respectively.
The following details of the specific structure of the color resist layer 1 according to the embodiment of the present invention will be described, including but not limited to the following forms:
in some embodiments, as shown in fig. 3, the color resist layer 1 includes a red pixel color resist unit 11 and a green pixel color resist unit 12, and the slope of the first surface of the red pixel color resist unit 11 is greater than the slope of the first surface of the green pixel color resist unit 12.
In this embodiment, since the wavelength of red light and the wavelength of green light are different and the wavelength of red light is greater than the wavelength of green light, the cavity length required for red light is greater than the cavity length required for green light.
Based on this, the slope of the first surface of the red pixel color resistance unit 11 is made larger than the slope of the first surface of the green pixel color resistance unit 12, so that the path of the red light passing through the red pixel color resistance unit 11 and the flat layer 2 is made larger than the path of the green light passing through the red pixel color resistance unit 11 and the flat layer 2, and the cavity length of the red light is made larger than the cavity length of the green light, so that the cavity length of the red light can meet the intensity requirement of the red light, the cavity length of the green light can also meet the intensity requirement of the green light, and finally, the intensity of the emergent light of the red light and the intensity of the emergent light of the green light can be respectively enhanced.
In some embodiments, as shown in fig. 4, the color resist layer 1 includes a red pixel color resist unit 11 and a blue pixel color resist unit 13; the slope of the first surface of the red pixel color resist unit 11 is greater than the slope of the first surface of the blue pixel color resist unit 13.
In this embodiment, since the wavelength of red light and the wavelength of blue light are different and the wavelength of red light is greater than the wavelength of blue light, the cavity length required for red light is greater than the cavity length required for blue light.
Based on this, the slope of the first surface of the red pixel color resistance unit 11 is made to be greater than the slope of the first surface of the green pixel color resistance unit 12, so that the path of the red light passing through the red pixel color resistance unit 11 and the flat layer 2 is made to be greater than the path of the blue light passing through the red pixel color resistance unit 11 and the flat layer 2, and further the cavity length of the red light is made to be greater than the cavity length of the blue light, so that the cavity length of the red light can meet the intensity requirement of the red light, the cavity length of the blue light can also meet the intensity requirement of the blue light, and finally the intensity of the emergent light of the red light and the intensity of the emergent light of the blue light can be respectively enhanced.
In other embodiments, as shown in fig. 5, the color resist layer 1 includes a green pixel color resist unit 12 and a blue pixel color resist unit 13; the slope of the first surface of the green pixel color resist unit 12 is larger than the slope of the first surface of the blue pixel color resist unit 13.
In this embodiment, since the wavelength of green light and the wavelength of blue light are different and the wavelength of green light is greater than the wavelength of blue light, the cavity length required for green light is greater than the cavity length required for blue light.
Based on this, the slope of the first surface of the green pixel color resistance unit 12 is made larger than the slope of the first surface of the blue pixel color resistance unit 13, so that the path of green light passing through the green pixel color resistance unit 11 and the flat layer 2 is made larger than the path of blue light passing through the blue pixel color resistance unit 13 and the flat layer 2, and the cavity length of green light is made larger than the cavity length of blue light, so that the cavity length of green light can meet the intensity requirement of green light, the cavity length of blue light can also meet the intensity requirement of blue light, and finally the intensity of emergent light of green light and the intensity of emergent light of blue light can be respectively enhanced.
In one possible implementation, the color resist layer 1 includes a red pixel color resist unit 11, a green pixel color resist unit 12, and a blue pixel color resist unit 13; the slope of the first surface of the red pixel color resist unit 11 is greater than the slope of the first surface of the green pixel color resist unit 12, and the slope of the first surface of the green pixel color resist unit 12 is greater than the slope of the first surface of the blue pixel color resist unit 13.
In this embodiment, since the wavelength of red light is greater than the wavelength of green light, which is greater than the wavelength of blue light, the cavity length required for red light is greatest, the cavity length required for green light is less than the cavity length required for blue light.
Based on this, the slope of the first surface of the red pixel color resistance unit 11 is made larger than the slope of the first surface of the green pixel color resistance unit 12, and the slope of the first surface of the green pixel color resistance unit 12 is made larger than the slope of the first surface of the blue pixel color resistance unit 13, and since the physical distances between the reflective electrode layer 3 and the common electrode layer 5 are equal, in the embodiment of the present invention, the path length of the light passing through each color resistance unit is different.
The color resistance unit and the flat layer 2 are made of two different materials, and the refractive indexes of the emergent light on the color resistance unit and the flat layer 2 with different slopes on the first surface are also different. Specifically, since the slope of the first surface of the red pixel color resist unit 11 is the largest, and the slope of the first surface of the blue pixel color resist unit 13 is the smallest, the path of the red light passing through each red pixel color resist unit 11 is the largest, the generated cavity length is the largest, the path of the blue light passing through each blue pixel color resist unit 13 is the smallest, and the generated cavity length is the smallest, so that the intensity of the red outgoing light, the intensity of the green outgoing light, and the intensity of the blue outgoing light can be respectively enhanced.
It should be noted that, to make the slope of the first surface of the red pixel color resistance unit 11 greater than the slope of the first surface of the green pixel color resistance unit 12, and the slope of the first surface of the green pixel color resistance unit 12 greater than the slope of the first surface of the blue pixel color resistance unit 13, the shapes of the red pixel color resistance unit 11, the green pixel color resistance unit 12, and the blue pixel color resistance unit 13 need to be different, that is, the red pixel color resistance unit 11, the green pixel color resistance unit 12, and the blue pixel color resistance unit 13 with different shapes are formed by exposure etching. In general, for convenience of processing and manufacturing, the red pixel color resist unit 11, the green pixel color resist unit 12, and the blue pixel color resist unit 13 are set to the same or similar shapes. By way of example, the cross-sectional shape of the red pixel color resist unit 11, the cross-sectional shape of the green pixel color resist unit 12, and the cross-sectional shape of the blue pixel color resist unit 13 may be one or more of triangular, trapezoidal, pentagonal, and the like having a hypotenuse, which is not limited in the embodiment of the present invention.
Further, in one possible implementation manner, the cross-sectional shape of the red pixel color resistance unit 11 on the first plane is a right triangle, the cross-sectional shape of the green pixel color resistance unit 12 on the first plane is a first right trapezoid, and the cross-sectional shape of the blue pixel color resistance unit 13 on the first plane is a second right trapezoid; wherein the hypotenuse of the right triangle is located on the first surface of the red pixel color resistance unit 11, the sloping waist of the first right trapezoid is located on the first surface of the green pixel color resistance unit 12, the sloping waist of the second right trapezoid is located on the first surface of the blue pixel color resistance unit 13, and the first plane is perpendicular to the flat layer 2
In the plane of the plane.
In this embodiment, since the cross-sectional shape of the red pixel color resist unit 11 on the first plane is a right triangle, the cross-sectional shape of the green pixel color resist unit 12 on the first plane is a first right trapezoid, and the cross-sectional shape of the blue pixel color resist unit 13 on the first plane is a second right trapezoid, the shapes of the red pixel color resist unit 11, the green pixel color resist unit 12 and the blue pixel color resist unit 13 are all regular, and thus the processing of the red pixel color resist unit 11, the green pixel color resist unit 12 and the blue pixel color resist unit 13 is facilitated, and the cost is saved. Also, since the hypotenuse of the right triangle is located on the first surface of the red pixel color resist unit 11, the sloping waist of the first right trapezoid is located on the first surface of the green pixel color resist unit 12, and the sloping waist of the second right trapezoid is located on the first surface of the blue pixel color resist unit 13, it is convenient to change the slope of the first surface of the red pixel color resist unit 11 by controlling the slope of the hypotenuse of the right triangle during processing, it is convenient to change the slope of the first surface of the green pixel color resist unit 12 by controlling the slope of the sloping waist of the first right trapezoid, and it is convenient to change the slope of the first surface of the blue pixel color resist unit 13 by controlling the slope of the sloping waist of the second right trapezoid.
Optionally, the length of the right-angle side of the right-angle triangle in the first direction, the length of the long right-angle side of the first right-angle trapezoid in the first direction, and the length of the long right-angle side of the second right-angle trapezoid in the first direction are all equal, the length of the right-angle side of the right-angle triangle in the second direction, the length of the right-angle side of the first right-angle trapezoid in the second direction, and the length of the right-angle side of the second right-angle trapezoid in the second direction are all equal, where the first direction is a direction perpendicular to the plane where the flat layer 2 is located, and the second direction is perpendicular to the first direction.
Based on this, only the cross-sectional shape of the red pixel color resistance unit 11 on the first plane is a right triangle, the cross-sectional shape of the green pixel color resistance unit 12 on the first plane is a first right trapezoid, and the cross-sectional shape of the blue pixel color resistance unit 13 on the first plane is a second right trapezoid, so that the slope of the first surface of the red pixel color resistance unit 11 is ensured to be larger than the slope of the first surface of the green pixel color resistance unit 12, and the slope of the first surface of the red pixel color resistance unit 11 is larger than the slope of the first surface of the blue pixel color resistance unit 13. When the slope of the first surface of the green pixel color resistance unit 12 is made larger than the slope of the first surface of the blue pixel color resistance unit 13, the slope of the first surface of the green pixel color resistance unit 12 is ensured to be larger than the slope of the first surface of the blue pixel color resistance unit 13 only by making the length of the short right angle side of the first right angle trapezoid in the second direction smaller than the length of the long right angle side of the second right angle trapezoid in the second direction. The right angle side of the right triangle in the first direction is shown as a side in fig. 1, the right angle side of the right triangle in the second direction is shown as b side in fig. 1, the long right angle side of the first right angle trapezoid in the first direction is shown as c side in the figure, the short right angle side of the first right angle trapezoid in the second direction is shown as d side in the figure, the long right angle side of the second right angle trapezoid in the first direction is shown as e side in the figure, the short right angle side of the first right angle trapezoid in the second direction is shown as f side in the figure, the first direction is shown as Y side in the figure, and the second direction is shown as X side in the figure.
In another possible implementation, as shown in fig. 2, the cross-sectional shape of the red pixel color resistance unit 11 on the first plane is a first right triangle, the cross-sectional shape of the green pixel color resistance unit 12 on the first plane is a second right triangle, and the cross-sectional shape of the blue pixel color resistance unit 13 on the first plane is a third right triangle; the hypotenuse of the first right triangle is located on the first surface of the red pixel color resistance unit 11, the hypotenuse of the second right triangle is located on the first surface of the green pixel color resistance unit 12, the hypotenuse of the third right triangle is located on the first surface of the blue pixel color resistance unit 13, and the first plane is a plane perpendicular to the plane of the flat layer 2.
In this embodiment, since the cross-sectional shape of the red pixel color resist unit 11 on the first plane is a first right triangle, the cross-sectional shape of the green pixel color resist unit 12 on the first plane is a second right triangle, and the cross-sectional shape of the blue pixel color resist unit 13 on the first plane is a third right triangle, the shape of the red pixel color resist unit 11, the shape of the green pixel color resist unit 12, and the shape of the blue pixel color resist unit 13 are all regular shapes, thereby facilitating the processing of the red pixel color resist unit 11, the green pixel color resist unit 12, and the blue pixel color resist unit 13, and saving costs. Also, since the hypotenuse of the first right triangle is located on the first surface of the red pixel color resist unit 11, the hypotenuse of the second right triangle is located on the first surface of the green pixel color resist unit 12, and the hypotenuse of the third right triangle is located on the first surface of the blue pixel color resist unit 13, it is convenient to change the slope of the first surface of the red pixel color resist unit 11 by controlling the slope of the hypotenuse of the first right triangle during processing, it is convenient to change the slope of the first surface of the green pixel color resist unit 12 by controlling the slope of the sloping waist of the second right triangle, and it is convenient to change the slope of the first surface of the blue pixel color resist unit 13 by controlling the slope of the sloping waist of the third right triangle.
Further, the length of the right angle side of the first right angle triangle in the first direction, the length of the right angle side of the second right angle triangle in the first direction and the length of the right angle side of the third right angle triangle in the first direction are equal; the length of the right angle side of the first right angle triangle in the second direction is smaller than that of the right angle side of the second right angle triangle in the second direction, the length of the right angle side of the second right angle triangle in the second direction is smaller than that of the right angle side of the third right angle triangle in the second direction, wherein the first direction is perpendicular to the plane of the flat layer 2, and the second direction is perpendicular to the first direction.
Based on this, only the length of the right angle side of the first right angle triangle in the first direction, the length of the right angle side of the second right angle triangle in the first direction, and the length of the right angle side of the third right angle triangle in the first direction are required to be equal, the length of the right angle side of the first right angle triangle in the second direction is smaller than the length of the right angle side of the second right angle triangle in the first direction, the length of the right angle side of the second right angle triangle in the first direction is smaller than the length of the right angle side of the third right angle triangle in the first direction, and the slope of the first surface of the red pixel color resist unit 11 is ensured to be larger than the slope of the first surface of the green pixel color resist unit 12, and the slope of the first surface of the green pixel color resist unit 12 is larger than the slope of the first surface of the blue pixel color resist unit 13. Wherein, as shown in fig. 2, the right angle side of the first right angle triangle in the first direction is shown as h side in fig. 2, the right angle side of the first right angle triangle in the second direction is shown as i side in fig. 2, the right angle side of the second right angle triangle in the first direction is shown as j side in fig. 2, the right angle side of the second right angle triangle in the second direction is shown as k side in fig. 2, the right angle side of the third right angle triangle in the first direction is shown as m side in fig. 2, the right angle side of the third right angle triangle in the second direction is shown as n side in fig. 2, the first direction is shown as Y side in fig. 2, and the second direction is shown as X side in fig. 2.
As can be seen from the foregoing embodiments, in the embodiment of the present invention, since the color resist layer 1 includes at least two color resist units of different colors, the slopes of the first surfaces of the color resist units are different, the first surfaces are the surfaces of the color resist layer 1 that emit light, and the slopes are the included angles between the first surfaces and the plane where the flat layer 2 is located, so that the slopes of the surfaces of the light emitted by each color resist unit are different, the lengths of the paths of the light passing through each color resist unit are different, and the refractive indexes of the light emitted by the color resist unit and the flat layer 2 are also different, so that the lengths of the paths of the light passing through the color resist unit and the flat layer 2 of different colors are different, and the intensity of the light emitted by the color resist unit is further enhanced. Therefore, the intensity of the emergent light rays with different colors is positively correlated with the light ray path, so that the lengths of the paths of the emergent light rays passing through the color resistance units with different colors and the flat layer 2 are different by changing the slope of the color resistance units with different colors on the first surface, the emergent light rays with different colors are respectively increased, and the display effect of the display module is improved.
In a second aspect, an embodiment of the present invention further provides a display device, where the display device includes the display module set according to any one of the embodiments in the first direction.
It should be noted that the display device may be a mobile display device such as a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted display device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), and the non-mobile display device may be a personal computer (personal computer, PC), a Television (TV), a teller machine or a self-service machine, and the embodiments of the present disclosure are not limited specifically. The beneficial effects of the display device are consistent with those of the display module, and the embodiments of the present disclosure will not be described in detail.
In a third aspect, an embodiment of the present invention further provides a method for preparing a display module according to any one of the embodiments of the first aspect, where the preparation method includes:
step S101: a color resist layer 1, an organic light-emitting layer 4, and a reflective electrode layer 3 are formed in a stacked arrangement.
Step S102: and carrying out exposure etching on the color resistance layer 1 to form at least two color resistance units with different colors, wherein the slopes of the first surfaces of the color resistance units are different, the first surfaces are surfaces of emergent rays of the color resistance layer 1, and the slopes are included angles between the first surfaces and the plane of the flat layer 2.
Step S103: the planarization layer 2 is filled between the color resist layer 1 and the organic light emitting layer 4, and the planarization layer 2 is made planar away from the organic light emitting layer 4.
Step S104: the common electrode layer 5 is covered on the flat layer 2.
As can be seen from the foregoing embodiments, in the foregoing method, since the color resist layer 1 is subjected to exposure etching, at least two color resist units of different colors are formed, and the slopes of the first surfaces of the color resist units are different, so that the slopes of the surfaces of the light rays emitted from each color resist unit are different, the lengths of paths of the light rays passing through each color resist unit are different, and the color resist units and the flat layer 2 are made of two different materials, and the refractive indexes of the light rays emitted from the color resist units and the flat layer 2 are also different, so that the lengths of the paths of the light rays passing through the color resist units of different colors and the flat layer 2 are different, and the intensity of the light rays emitted from the light rays is further enhanced. Therefore, the intensity of the emergent light rays with different colors is positively correlated with the light ray path, so that the lengths of the paths of the emergent light rays passing through the color resistance units with different colors and the flat layer 2 are different by changing the slope of the color resistance units with different colors on the first surface, the emergent light rays with different colors are respectively increased, and the display effect of the display module is improved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A display module, characterized in that the display module comprises:
a color resist layer and a planarization layer overlying the color resist layer;
the color resistance layer at least comprises two color resistance units with different colors, and the slopes of the first surfaces of the color resistance units are different, wherein the first surfaces are surfaces of the color resistance layer for emitting light, and the slopes are included angles between the first surfaces and the plane where the flat layer is located.
2. The display module of claim 1, wherein the color barrier layer comprises any two of a red pixel color barrier cell, a green pixel color barrier cell, and a blue pixel color barrier cell;
the slope of the first surface of the red pixel color resistance unit is larger than that of the first surface of the green pixel color resistance unit, and the slope of the first surface of the green pixel color resistance unit is larger than that of the first surface of the blue pixel color resistance unit.
3. The display module of claim 1, wherein the color resist layer comprises a red pixel color resist unit, a green pixel color resist unit, and a blue pixel color resist unit;
the slope of the first surface of the red pixel color resistance unit is larger than that of the first surface of the green pixel color resistance unit, and the slope of the first surface of the green pixel color resistance unit is larger than that of the first surface of the blue pixel color resistance unit.
4. A display module according to claim 3, wherein the red pixel color resistance unit has a right triangle shape in cross section on a first plane, the green pixel color resistance unit has a first right trapezoid shape in cross section on the first plane, and the blue pixel color resistance unit has a second right trapezoid shape in cross section on the first plane;
the right triangle is provided with a right triangle, a first right trapezoid and a second right trapezoid, wherein the hypotenuse of the right triangle is positioned on the first surface of the red pixel color resistance unit, the hypotenuse of the first right trapezoid is positioned on the first surface of the green pixel color resistance unit, the hypotenuse of the second right trapezoid is positioned on the first surface of the blue pixel color resistance unit, and the first plane is a plane perpendicular to the plane where the flat layer is positioned.
5. The display module of claim 4, wherein the length of the right angle triangle in the first direction, the length of the long right angle side of the first right angle trapezoid in the first direction, and the length of the long right angle side of the second right angle trapezoid in the first direction are all equal, the length of the right angle side of the right angle triangle in the second direction, the length of the right angle side of the first right angle trapezoid in the second direction, and the length of the right angle side of the second right angle trapezoid in the second direction are all equal, wherein the first direction is a direction perpendicular to the plane of the flat layer, and the second direction is perpendicular to the first direction.
6. A display module according to claim 3, wherein the red pixel color resistance unit has a first right triangle in cross-section, the green pixel color resistance unit has a second right triangle in cross-section, and the blue pixel color resistance unit has a third right triangle in cross-section;
the hypotenuse of the first right triangle is located on the first surface of the red pixel color resistance unit, the hypotenuse of the second right triangle is located on the first surface of the green pixel color resistance unit, the hypotenuse of the third right triangle is located on the first surface of the blue pixel color resistance unit, and the first plane is a plane perpendicular to the plane where the flat layer is located.
7. The display module of claim 6, wherein the length of the right side of the first right triangle in the first direction, the length of the right side of the second right triangle in the first direction, and the length of the right side of the third right triangle in the first direction are equal;
the length of the right angle side of the first right angle triangle in the second direction is smaller than that of the right angle side of the second right angle triangle in the second direction, the length of the right angle side of the second right angle triangle in the second direction is smaller than that of the right angle side of the third right angle triangle in the second direction, wherein the first direction is perpendicular to the plane where the flat layer is located, and the second direction is perpendicular to the first direction.
8. The display module of claim 1, further comprising a reflective electrode layer, an organic light emitting layer, and a common electrode layer;
the organic light emitting layer is located between the reflective electrode layer and the planarization layer, and the common electrode layer covers the planarization layer.
9. A display device comprising a display module according to any one of claims 1-8.
10. A method for manufacturing the display module according to any one of claims 1 to 8, comprising:
forming a color resistance layer, an organic light-emitting layer and a reflecting electrode layer which are stacked;
performing exposure etching on the color resistance layer to form at least two color resistance units with different colors, wherein the slopes of the first surfaces of the color resistance units are different, the first surfaces are surfaces for emitting light rays of the color resistance layer, and the slopes are included angles between the first surfaces and a plane where the flat layer is located;
filling a flat layer between the color resistance layer and the organic light-emitting layer, and enabling the flat layer to be away from the organic light-emitting layer to be a plane;
and covering the common electrode layer on the flat layer.
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