Display device and manufacturing method thereof

Abstract

To provide a display device and a method of manufacturing the same.SOLUTION: The display device includes first pixels and second pixels. The first pixels are used to emit light of a first color. The second pixels are used to emit light of a second color different from the first color. Profiles of the first and second pixels meet the conditions that: (1) the ratio of the length of the long axis to the length of the short axis should be greater than or equal to 1 and less than 1.25; or (2) the ratio of the length of the longest side to the length of the shortest side should be greater than or equal to 1 and less than 1.25.SELECTED DRAWING: Figure 1A

Description

[Technical Field]

[0001] The present disclosure relates to display devices, and more particularly to display devices that include pixels with specific contours. [Background technology]

[0002] Display devices including optical component layers are widely used in many electronic devices, and in recent years, there has been a demand for larger display devices. However, there are steps in the manufacturing method of display devices that result in poor luminous efficiency. In fact, one of the challenges recognized in this field is to improve the luminous efficiency of display devices. Therefore, the display device industry is seeking ways to solve this challenge. Summary of the Invention [Means for solving the problem]

[0003] A display device includes a first pixel and a second pixel. The first pixel is used to emit light of a first color. The second pixel is used to emit light of a second color different from the first color. The outline of the first pixel and the outline of the second pixel satisfy the following conditions: (1) the ratio of the length of the major axis to the length of the minor axis is equal to or greater than 1 and less than 1.25; or (2) the ratio of the length of the longest side to the length of the shortest side is equal to or greater than 1 and less than 1.25.

[0004] A method for manufacturing a display device includes forming a first pixel and forming a second pixel. The first pixel is used to emit light of a first color. The second pixel is used to emit light of a second color different from the first color. The outline of the first pixel and the outline of the second pixel satisfy either (1) the ratio of the length of the major axis to the length of the minor axis is equal to or greater than 1 and less than 1.25, or (2) the ratio of the length of the longest side to the length of the shortest side is equal to or greater than 1 and less than 1.25. [Brief explanation of the drawings]

[0005] [Figure 1A] 1 is a top view of a display device according to a specific embodiment; [Figure 1B]1B is a cross-sectional view of the display device shown in FIG. 1A taken along line AA' according to a specific embodiment. [Figure 2A] 1 is a top view of a display device according to a specific embodiment; [Figure 2B] 2B is a cross-sectional view of the display device shown in FIG. 2A taken along line BB' according to a specific embodiment. [Figure 3] 1 is a top view of a display device according to a specific embodiment; [Figure 4A] 1A-1C illustrate a display device at different stages of manufacture according to a method in accordance with certain embodiments of the present disclosure. [Figure 4B] 1A-1C illustrate a display device at different stages of manufacture according to a method in accordance with certain embodiments of the present disclosure. [Figure 4C] 1A-1C illustrate a display device at different stages of manufacture according to a method in accordance with certain embodiments of the present disclosure. [Figure 4D] 1A-1C illustrate a display device at different stages of manufacture according to a method in accordance with certain embodiments of the present disclosure. [Figure 4E] 1A-1C illustrate a display device at different stages of manufacture according to a method in accordance with certain embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0006] The following disclosure provides many different embodiments or examples for implementing different features of the present application. To simplify the disclosure of the present application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to be limitations on the present application. For example, a description below of a first feature being formed on or above a second feature may include an embodiment in which the first feature and the second feature are in direct contact with each other, and may also include an embodiment in which another feature is formed between the first feature and the second feature, such that the first feature and the second feature are not in direct contact with each other. Also, the present application may repeat the numerals and / or letters of elements in the drawings in various examples. This repetition is intended for simplicity and clarity and does not represent a relationship between the different embodiments and / or configurations discussed.

[0007] Additionally, spatially relative terms such as "below," "lower," "relatively lower," "higher," "relatively higher," etc. are used in this application to facilitate the description of the relationship of one element or feature to another element or feature shown in the drawings. Spatially relative terms are intended to encompass other orientations of the device during use or operation in addition to the orientation depicted in the drawings. The device may be otherwise oriented (rotated 90 degrees or at other orientations), in which case the spatially relative terms used in this application should be interpreted accordingly.

[0008] While the numerical ranges and parameters setting forth the broad scope of the present disclosure are approximations, the relevant numerical values ​​in the specific examples are presented as precisely as possible. However, some numerical values ​​may contain errors necessarily resulting from the standard deviation found in their respective testing measurements. Also, as used herein, the term "about" generally means within ±10%, ±5%, ±1%, or ±0.5% of a given value or range. Alternatively, as commonly understood by those of ordinary skill in the art, the term "about" means within an acceptable standard error of the mean. Except in the operational / operational examples, or unless otherwise specified, numerical ranges, amounts, values, and percentages (e.g., quantities of materials disclosed herein, durations, temperatures, operating conditions, ratios of amounts, and the like) are understood in all instances to be modified by the term "about." Accordingly, unless indicated to the contrary, the numerical parameters set forth in the present disclosure and claims are approximations that may vary. At the very least, each numerical parameter should be construed in light of the number of reported significant digits and by using ordinary rounding techniques. Ranges can be expressed herein as from one endpoint to the other endpoint, or between two endpoints. Ranges given herein include the endpoints unless expressly stated otherwise.

[0009] FIG. 1A is a top view of a display device 100a according to a specific embodiment.

[0010] In some embodiments, display device 100a may include pixels 121a, 122a, and 123a. Pixels 121a, 122a, and 123a may be arranged in an alternating row direction (e.g., X direction). In some embodiments, pixels 121a, 122a, and 123a in the first row may be offset in the X direction from pixels 121a, 122a, and / or 123a in the second row, respectively. Pixels 121a, 122a, and 123a in the first row are aligned in the Y direction with pixels 121a, 122a, and 123a in the third row, respectively. In some embodiments, pixel 121a is configured to emit a first color, pixel 122a is configured to emit a second color, and pixel 123a is configured to emit a third color. In some embodiments, the first color comprises green light (e.g., light with a wavelength between 500 nm and 580 nm), the second color comprises red light (e.g., light with a wavelength between 620 nm and 780 nm), and the third color comprises blue light (e.g., light with a wavelength between 400 nm and 500 nm).

[0011] In some embodiments, the profile of pixel 121a may include a circle. In some embodiments, the profile of pixel 122a may include a circle. In some embodiments, the profile of pixel 123a may include a circle.

[0012] In some embodiments, pixel 121a may include pixel units 1211, 1212, and 1213 located in the first, third, and second rows. In some embodiments, the distance between any two adjacent pixel units is substantially equal. In some embodiments, any two adjacent pixel units may be located in adjacent rows. For example, pixel unit 1211 and pixel unit 1212 are separated by a distance D1. Pixel unit 1212 and pixel unit 1213 are separated by a distance D1. Pixel unit 1211 and pixel unit 1213 are separated by a distance D1. In some embodiments, the distance between any two adjacent pixel units (not shown) of pixel 122a is substantially equal. In some embodiments, the distance between any two adjacent pixel units (not shown) of pixel 123a is substantially equal.

[0013] FIG. 1B is a cross-sectional view of the display device 100a shown in FIG. 1A along line AA' according to a specific embodiment.

[0014] In some embodiments, the display device 100a further comprises a substrate 110, a pixel definition layer 130, a planarization layer 140, a filler layer 150, optical component layers 160a, 160b, 160c, filter layers 170a, 170b, 170c, and a cover plate 180.

[0015] In some embodiments, the substrate 110 comprises a substrate (not shown), a dielectric layer (not shown), and one or more circuits (not shown) disposed on or within the substrate. In some embodiments, the substrate is a transparent substrate or is at least partially transparent. In some embodiments, the substrate is a non-flexible substrate, and the substrate material may include glass, quartz, low temperature poly-silicon (LTPS), or other suitable materials. In some embodiments, the substrate is a flexible substrate, and the substrate material may include transparent epoxy resin, polyimide, polyvinyl chloride, methyl methacrylate, or other suitable materials. A dielectric layer may be disposed on the substrate as needed. In some embodiments, the dielectric layer may include silicon oxide, silicon nitride, silicon oxynitride, or other suitable materials.

[0016] In some embodiments, the circuit may include a complementary metal-oxide-semiconductor (CMOS) circuit, or may include a plurality of transistors and a plurality of capacitors proximate the transistors, the transistors and capacitors being formed on a dielectric layer. In some embodiments, the transistors are thin-film transistors (TFTs). Each transistor includes source / drain regions (including at least one source region and drain region), a channel region interposed between the source / drain regions, a gate electrode disposed over the channel region, and a gate insulator interposed between the channel region and the gate electrode. The channel region of the transistor may be made of a semiconductor material, such as silicon or other elements selected from Groups IV, III, and V.

[0017] In some embodiments, the substrate 110 includes components such as an interlayer dielectric structure and a first metal layer. The interlayer dielectric structure is disposed over the circuitry or transistors. A trace layer, such as the first metal layer, can be used to electrically connect to the pixels 121a, 122a, and / or 120c.

[0018] Pixels 121a, 122a, and 123a are provided on substrate 110. In some embodiments, pixels 121a, 122a, and 123a may each be an organic light-emitting diode, a micro light-emitting diode (micro LED or mini LED), a quantum dot light-emitting diode (QLED), or other suitable pixel.

[0019] In some embodiments, the pixels 121 a , 122 a , and 123 a may each include an electrode 1201 , a carrier injection layer 1202 , a carrier transport layer 1203 , an emissive layer 1204 , a carrier transport layer 1205 , and an electrode 1206 .

[0020] Electrodes 1201 are provided on the surface of the substrate 110. Each electrode 1201 is configured to have one side connected to a circuit embedded in or electrically connected to the substrate 110 and the other side connected to the carrier injection layer 1202. The electrodes 1201 include a metal material such as Ag, Mg, etc. In some embodiments, the electrodes 1201 include indium tin oxide (ITO), indium zinc oxide (IZO), or other suitable materials.

[0021] A carrier injection layer 1202 is provided on the electrode 1201. In some embodiments, the carrier injection layer 1202 is used for hole injection. In some embodiments, the carrier injection layer 1202 is used for electron injection. In some embodiments, the carrier injection layer 1202 is in contact with the pixel defining layer 130. In some embodiments, the carrier injection layer 1202 comprises an organic compound. In some embodiments, the carrier injection layer 1202 is a composite structure.

[0022] The carrier transport layer 1203 is disposed on the carrier injection layer 1202. In some embodiments, the carrier transport layer 1203 is a hole transportation layer (HTL). In some embodiments, the carrier transport layer 1203 is an electron transportation layer (ETL). In some embodiments, the carrier transport layer 1203 is in contact with the pixel defining layer 130. In some embodiments, the carrier transport layer 1203 includes an organic compound. In some embodiments, the carrier transport layer 1203 has the property of transporting electrons or holes in one direction (e.g., from electrode 1201 to electrode 1206). In some embodiments, the carrier transport layer 1203 has a composite structure.

[0023] An emissive layer 1204 (EML) is disposed on the carrier transport layer 1203. The emissive layer 1204 may completely cover the carrier transport layer 1203. In some embodiments, the emissive layers 1204 of the pixels 121a, 122a, and 123a comprise different materials to emit wavelengths of light in different wavelength bands. For example, the emissive layer 1204 of the pixel 122a is configured to emit a first color, the emissive layer 1204 of the pixel 121a is configured to emit a second color, and the emissive layer 1204 of the pixel 123a is configured to emit a third color.

[0024] Carrier transport layer 1205 is disposed on light-emitting layer 1204. In some embodiments, carrier transport layer 1205 is an electron transport layer. In some embodiments, carrier transport layer 1205 is a hole transport layer. In some embodiments, carrier transport layer 1205 and carrier transport layer 1203 are configured in opposite valence states. In some embodiments, carrier transport layer 1205 is a composite structure.

[0025] An electrode 1206 is provided on the carrier transport layer 1205. The electrode 1206 includes a metal material such as Ag, Mg, etc. In some embodiments, the electrode 1206 includes indium tin oxide (ITO), indium zinc oxide (IZO), or other suitable material.

[0026] The pixel defining layer 130 is disposed between two pixels (e.g., pixels 121a, 122a, and 123a). The openings in the pixel defining layer 130 can be used to define the light-emitting areas and / or contours of the pixels. In some embodiments, the pixel defining layer 130 includes a light-absorbing material that can have a light absorption of 85% or more, e.g., 85%, 88%, 90%, 93%, 95%, 97%, 98%, or 99%. In some embodiments, the pixel defining layer 130 includes a light-transmitting material that can have a light transmittance of 85% or more, e.g., 85%, 88%, 90%, 93%, 95%, 97%, 98%, or 99%. The pixel defining layer 130 can include a dielectric material.

[0027] In some embodiments, the outline of the opening in pixel defining layer 130 comprises a circle. In some embodiments, the opening in pixel defining layer 130 can be used to accommodate electrode 1201, carrier injection layer 1202, carrier transport layer 1203, light emitting layer 1204, carrier transport layer 1205, and / or electrode 1206.

[0028] In some embodiments, the outline of electrode 1201, carrier injection layer 1202, carrier transport layer 1203, light emitting layer 1204, carrier transport layer 1205, and / or electrode 1206 may comprise a circular shape.

[0029] A planarization layer 140 is provided on the substrate 110. The planarization layer 140 covers the pixels 121a, 122a, 123a, and the pixel defining layer 130 and provides a flat upper surface. The planarization layer 140 may include an oxide, a nitride, or other dielectric material.

[0030] The filler layer 150 is disposed on the planarization layer 140. The filler layer 150 comprises a substantially transparent material, such as a resin or other suitable material, and may include an optional filler. The light transmittance of the filler layer 150 may be 85% or greater, such as 85%, 88%, 90%, 93%, 95%, 97%, 98%, or 99%.

[0031] In some embodiments, optical component layers 160a, 160b, and 160c are disposed within filler layer 150. Optical component layer 160a is disposed over pixel 121a and is vertically aligned with pixel 121a. Optical component layer 160b is disposed over pixel 122a and is vertically aligned with pixel 122a. Optical component layer 160c is disposed over pixel 123a and is vertically aligned with pixel 123a. In some embodiments, optical component layers 160a, 160b, and 160c are configured to modify the light path of light emitted from the pixel. In some embodiments, optical component layers 160a, 160b, and 160c comprise lenses or other suitable components. In some embodiments, optical component layers 160a, 160b, and 160c have contours that protrude toward substrate 110. In some embodiments, in top view, optical component layer 160a, optical component layer 160b, and / or optical component layer 160c can have substantially the same outline as pixels 121a, 122a, and / or 123a, respectively. In some embodiments, in top view, the outline of optical component layer 160a, optical component layer 160b, and / or optical component layer 160c can include a circular shape.

[0032] As shown in FIG. 1B , filter layer 170a is disposed on optical component layer 160a and vertically aligned with optical component layer 160a. Filter layer 170b is disposed on optical component layer 160b and vertically aligned with optical component layer 160b. Filter layer 170c is disposed on optical component layer 160c and vertically aligned with optical component layer 160c. Filter layers 170a, 170b, and 170c each allow light of a different wavelength band to pass through. For example, filter layer 170a allows green light (e.g., light with a wavelength of 500 nm to 580 nm) to pass through, filter layer 170b allows red light (e.g., light with a wavelength of 620 nm to 780 nm) to pass through, and filter layer 170c allows blue light (e.g., light with a wavelength of 400 nm to 500 nm) to pass through. In some embodiments, filter layers 170a, 170b, and / or 170c can have substantially the same contours as pixels 121a, 122a, and / or 123a, respectively, in a top view. In some embodiments, filter layers 170a, 170b, and 170c can be eliminated.

[0033] A cover plate 180 is disposed over filter layers 170a, 170b, and 170c. In some embodiments, cover plate 180 comprises a substantially transparent component, such as glass or other suitable component.

[0034] In an embodiment of the present disclosure, the contour of the opening in pixel definition layer 130 and the contours of pixels 121a, 122a, and 123a may be circular. When defining the opening in pixel definition layer 130, if the contour of the opening in pixel definition layer 130 satisfies either (1) the ratio of the length of the major axis to the length of the minor axis being equal to or greater than 1 and less than 1.25, or (2) the ratio of the length of the longest side to the length of the shortest side being equal to or greater than 1 and less than 1.25, the tension of pixel definition layer 130 can be maintained within a relatively appropriate range, and differences in size of pixels 121a, 122a, and 123a caused by differences between the contour formed in pixel definition layer 130 and the desired contour due to errors in the photolithography process can be reduced.

[0035] 2A is a top view of a display device 100b according to a specific embodiment. The display device 100b can be similar to the display device 100a, with the following differences.

[0036] In some embodiments, display device 100b may include pixels 121b, 122b, and 123b. In some embodiments, pixels 121b, 122b, and 123b may have different contours. In some embodiments, pixels 121b, 122b, and 123b may have different sizes. In some embodiments, pixels 121b, 122b, and 123b may have different surface areas.

[0037] In some embodiments, pixel 121b may have an elliptical outline. In some embodiments, the ratio of the length of the major axis L1 to the minor axis L2 of pixel 121b is greater than or equal to 1 and less than 1.25, such as 1, 1.05, 1.1, 1.5, 1.2, 1.21, 1.22, 1.23, 1.24, or 1.245. Pixel 121b may include pixel unit 1214, pixel unit 1215, and pixel unit 1216. Pixel unit 1214 may be located in the first row. Pixel unit 1215 may be located in the second row. Pixel unit 1216 may be located in the third row. In some embodiments, the outline of pixel unit 1214 may be different from the outline of pixel unit 1215. In some embodiments, the outline of pixel unit 1214 may be the same as the outline of pixel unit 1216. In some embodiments, the contours of pixel unit 1214 and pixel unit 1215 may be substantially mirror images of each other. For example, the contour of pixel unit 1214 may be rotated 180 degrees around the Y axis to obtain the contour of pixel unit 1215. Pixel 122b may include pixel 1221 and pixel 1222. Pixel 1221 may be located in the first row. Pixel 1222 may be located in the second row. In some embodiments, the contour of pixel 1221 may be the same as the contour of pixel 1222.

[0038] There may be a distance D2 between pixel unit 1214 and pixel unit 1216. Two adjacent pixels 122b may have a distance D3. Two adjacent pixels 123b may have a distance D4. There may be a distance D5 between pixel unit 1214 and pixel unit 1215. In some embodiments, distance D2 may not be equal to distance D3. In some embodiments, distance D3 may not be equal to distance D4. In some embodiments, distance D2 may not be equal to distance D4. In some embodiments, distance D2 may be equal to distance D5.

[0039] FIG. 2B is a cross-sectional view of the display device shown in FIG. 2A along line BB' according to a specific embodiment.

[0040] In some embodiments, in top view, the openings in pixel definition layer 130 may define elliptical and / or circular contours, and the ratio of the length of the major axis to the minor axis of the openings in pixel definition layer 130 may be greater than or equal to 1 and less than 1.25, such as 1, 1.05, 1.1, 1.5, 1.2, 1.21, 1.22, 1.23, 1.24, or 1.245.

[0041] Optical component layers 160a, 160b, and 160c can have the same contours as pixels 121b, 122b, and 123b, respectively. Optical component layers 160a, 160b, and 160c can have the same sizes as pixels 121b, 122b, and 123b, respectively. In some embodiments, optical component layers 160a, 160b, and 160c can have different contours. In some embodiments, optical component layers 160a, 160b, and 160c can have different sizes. In some embodiments, the ratio of the length of the major axis to the minor axis of optical component layer 160a in a top view is greater than or equal to 1 and less than 1.25, for example, 1, 1.05, 1.1, 1.5, 1.2, 1.21, 1.22, 1.23, 1.24, or 1.245.

[0042] Filter layers 170a, 170b, and 170c may have the same contours as pixels 121b, 122b, and 123b, respectively. Filter layers 170a, 170b, and 170c may have the same sizes as pixels 121b, 122b, and 123b, respectively. In some embodiments, filter layers 170a, 170b, and 170c may have different contours. In some embodiments, filter layers 170a, 170b, and 170c may have different sizes. In some embodiments, the ratio of the length of the major axis to the minor axis of filter layer 170a in a top view is greater than or equal to 1 and less than 1.25, for example, 1, 1.05, 1.1, 1.5, 1.2, 1.21, 1.22, 1.23, 1.24, or 1.245.

[0043] In this embodiment, the pixel 121a may have an elliptical outline, and when the ratio of the length of the major axis to the minor axis is greater than or equal to 1 and less than 1.25, the tension of the pixel defining layer 130 can be maintained within a relatively appropriate range, and the difference between the outline formed by the pixel defining layer 130 and the desired outline due to errors in the photolithography process can be reduced.

[0044] 3 is a top view of a display device 100c according to a specific embodiment. The display device 100c can be similar to the display device 100a, with the following differences.

[0045] In some embodiments, display device 100c may include pixels 121c, 122c, and 123c. In some embodiments, the outlines of pixels 121c, 122c, and 123c may be polygonal. In some embodiments, the outlines of pixels 121c, 122c, and 123c may be regular hexagonal. In other embodiments, the outlines of pixels 121c, 122c, and 123c may include pentagons, octagons, decagons, and dodecagons. In some embodiments, pixels 121c, 122c, and 123c may have sides 122e1 and 122e2. In some embodiments, the lengths of sides 122e1 and 122e2 may be the same. In some embodiments, the lengths of sides 122e1 and 122e2 may be different. In some embodiments, side 122e1 may be the long side (or the longest side), side 122e2 may be the short side (or the shortest side), and the ratio of the lengths of sides 122e1 and 122e2 may be greater than or equal to 1 and less than 1.25, for example, 1, 1.05, 1.1, 1.5, 1.2, 1.21, 1.22, 1.23, 1.24, or 1.245.

[0046] In this embodiment, pixels 121c, 122c, and 123c may have polygonal contours, and when the ratio of the length of the long side to the short side is greater than or equal to 1 and less than 1.25, the tension of pixel defining layer 130 can be maintained within a relatively appropriate range, and the difference between the contour formed by pixel defining layer 130 and the desired contour due to errors in the photolithography process can be reduced.

[0047] 4A, 4B, 4C, 4D and 4E show a display device at different stages of fabrication in a method according to certain embodiments of the present disclosure.

[0048] As shown in FIG. 4A, a substrate 110 is provided.

[0049] 4B, a plurality of electrodes 1201 are formed on the substrate 110. The electrodes 1201 can be formed on the substrate 110 by vapor deposition, sputtering, atomic layer deposition (ALD), thermal evaporation, coating, or jetting, and can be patterned by photolithography and etching techniques.

[0050] As shown in FIG. 4C, a dielectric layer 131 is formed to cover the electrode 1201 and the substrate 110.

[0051] 4D , a patterning process P1 including a photolithography process and an etching process is performed to pattern the dielectric layer 131. The photolithography process includes forming a photoresist (not shown) on the dielectric layer 131, exposing the dielectric layer 131 through a reticle, and developing the pattern that defines the photoresist, and then performing an etching process to remove a portion of the dielectric layer 131 to form the pixel defining layer 130. In some embodiments, the outline of the opening in the pixel defining layer 130 satisfies the following: (1) the ratio of the length of the major axis to the length of the minor axis is equal to or greater than 1 and less than 1.25, or (2) the ratio of the length of the longest side to the length of the shortest side is equal to or greater than 1 and less than 1.25.

[0052] Referring to FIG. 4E, the display device 100a shown in FIG. 1B can be obtained by forming a carrier injection layer 1202, a carrier transport layer 1203, an emitting layer 1204, a carrier transport layer 1205, an electrode 1206, a planarization layer 140, a filling layer 150, optical component layers 160a, 160b, 160c, filter layers 170a, 170b, 170c, and a cover plate 180.

[0053] In a comparative example, the ratio of the longest side length to the shortest side length (or the ratio of the major axis length to the minor axis length) of the contour of the opening in the pixel definition layer is 1.25 or more (e.g., rectangular), and if there is a large process error when exposing the dielectric layer, the tension in the dielectric layer is relatively high, which may cause deformation of the contour of the pixel definition layer. In an embodiment of the present disclosure, if the contour of the opening in the pixel definition layer 130 satisfies the following conditions: (1) the ratio of the major axis length to the minor axis length is 1 or more and less than 1.25, or (2) the ratio of the longest side length to the shortest side length is 1 or more and less than 1.25, deformation of the contour of the dielectric layer 131 due to errors caused by the process of exposing the dielectric layer 131 can be reduced.

[0054] The above outlines the features of several embodiments so that those skilled in the art can better understand each aspect of the present disclosure. It will be apparent to those skilled in the art that, based on this disclosure, they can easily design or adapt other manufacturing processes and structures to achieve the same purpose and / or achieve the same advantages as the embodiments described in this application. Those skilled in the art should also understand that such equivalent structures do not depart from the spirit and scope of the present disclosure, and that numerous changes, substitutions, and alterations can be made thereto, but still fall within the spirit and scope of the present disclosure.

[0055] Next, the scope of this application is not limited to the specific embodiments of the processes, machines, manufactures, compositions of matter, components, methods, and steps described herein. From the disclosure of this disclosure, it will be readily apparent to those skilled in the art that existing or future-developed processes, machines, manufactures, compositions of matter, components, methods, or steps that perform substantially the same function or achieve substantially the same results as the corresponding embodiments described herein in accordance with this disclosure can be used. Therefore, such processes, machines, manufactures, compositions of matter, components, methods, and steps are within the patentable scope of this application. [Explanation of symbols]

[0056] 100a display device 100b display device 100c display device 110 Substrate 121a, 121b, 121c pixels 1211, 1212, 1213, 1214, 1215, 1216 pixel units 121e1, 121e2 sides 122a, 122b, 122c pixels 1221, 1222 pixel units 123a, 123b, 123c pixels 1201 Electrode 1202 Carrier injection layer 1203 Carrier transport layer 1204 Light-emitting layer 1205 Carrier transport layer 1206 Electrode 130 Pixel Definition Layer 131 Dielectric layer 140 Planarization layer 150 Filled bed 160a Optical component layer 160b Optical component layer 160c optical layer 170a filter layer 170b filter layer 170c filter layer 180 cover plate D1, D2, D3, D4, D5 distance L1 long axis L2 short axis

Claims

1. a plurality of first pixels for emitting light of a first color, each of the plurality of first pixels having an elliptical outline; a plurality of second pixels for emitting light of a second color different from the first color, each of the plurality of second pixels having a circular outline; A display device comprising: Each of the contours of the plurality of first pixels is a ratio of a length of a major axis to a length of a minor axis is greater than 1 and less than 1.25, and a first pixel of the plurality of first pixels is aligned with a second pixel of the plurality of first pixels along a first direction and is not aligned with a third pixel of the plurality of first pixels along a second direction perpendicular to the first direction and the first direction; an extension direction of the major axes of the first pixels of the plurality of first pixels is non-parallel to the first direction and the second direction, the extension direction of the major axes of the first pixels of the plurality of first pixels is non-parallel to an extension direction of the major axes of the third pixels of the plurality of first pixels and is parallel to an extension direction of the major axes of the second pixels of the plurality of first pixels; Fulfilling that, Display device.

2. The display device according to claim 1 , wherein the contour of each of the plurality of first pixels is different from the contour of each of the plurality of second pixels.

3. The display device of claim 1 , wherein an outline of the first pixel of the plurality of first pixels is different from an outline of the third pixel of the plurality of first pixels.

4. 4. The display device according to claim 3, wherein the first pixel of the plurality of first pixels is located in a first row, the third pixel of the plurality of first pixels is located in a second row adjacent to the first row, and the extension direction of the first row and the extension direction of the second row are the second direction.

5. 5. The display device of claim 4, wherein a second pixel of the plurality of first pixels is located in a third row adjacent to the second row, a first distance between the first pixel of the plurality of first pixels and a second pixel of the plurality of first pixels is equal to a second distance between the first pixel of the first pixels and a third pixel of the first pixels, and an extension direction of the third row is the second direction.

6. The display device according to claim 5 , wherein an outline of a second pixel of the plurality of first pixels is the same as the outline of the first pixel of the plurality of first pixels.

7. a first pixel of the plurality of second pixels located in the first row; a second pixel of the plurality of second pixels is located in the second row; The display device according to claim 4 , wherein an outline of the first pixel of the plurality of second pixels is the same as an outline of the second pixel of the plurality of second pixels.

8. The display device according to claim 1 , wherein a size of each of the plurality of first pixels is different from a size of each of the plurality of second pixels.

9. a first filter layer disposed on the plurality of first pixels; The outline of the first filter layer is an ellipse, and the ratio of the length of the major axis to the length of the minor axis is greater than 1 and less than 1.

25. The display device according to claim 1 .

10. The display device of claim 9 , further comprising a second filter layer disposed over the plurality of second pixels, the second filter layer having a contour different from the contour of the first filter layer.

11. a pixel definition layer for defining the contours of the first plurality of pixels; the outline of the opening in the pixel definition layer is elliptical; The ratio of the length of the major axis to the length of the minor axis is greater than 1 and less than 1.

25. The display device according to claim 1 .

12. The display device according to claim 1 , wherein the distance between any two adjacent pixels of the plurality of first pixels is equal.

13. forming a plurality of first pixels for emitting light of a first color, each of the plurality of first pixels having an elliptical outline; forming a plurality of second pixels for emitting light of a second color different from the first color, each of the plurality of second pixels having a circular outline; A method for manufacturing a display device comprising: Each of the contours of the plurality of first pixels is a ratio of a length of a major axis to a length of a minor axis is greater than 1 and less than 1.25, and a first pixel of the plurality of first pixels is aligned with a second pixel of the plurality of first pixels along a first direction and is not aligned with a third pixel of the plurality of first pixels along a second direction perpendicular to the first direction and the first direction; an extension direction of the major axes of the first pixels of the plurality of first pixels is non-parallel to the first direction and the second direction, the extension direction of the major axes of the first pixels of the plurality of first pixels is non-parallel to an extension direction of the major axes of the third pixels of the plurality of first pixels and is parallel to an extension direction of the major axes of the second pixels of the plurality of first pixels; Fulfilling that, A method for manufacturing a display device.

14. The steps to prepare the board, forming a dielectric layer on the substrate; patterning the dielectric layer to form a first pixel defining layer for defining the outlines of the plurality of first pixels and a second pixel defining layer for defining the outlines of the plurality of second pixels; the outline of the opening of the first pixel definition layer is elliptical; the ratio of the length of the major axis of the opening to the length of the minor axis of the opening is greater than 1 and less than 1.25; the outline of the opening in the second pixel definition layer is circular; fulfill, The method of claim 13.

15. forming a first filter layer on the plurality of first pixels; The first filter layer has an elliptical outline, a ratio of the length of the major axis of the first filter layer to the length of the minor axis of the first filter layer is greater than 1 and less than 1.25; The method of claim 13.

16. The method of claim 15 , further comprising forming a second filter layer over the plurality of second pixels, the second filter layer having a contour different from the contour of the first filter layer.

17. The method of claim 13 , wherein the contour of each of the plurality of first pixels is different from the contour of each of the plurality of second pixels.

18. The method of claim 13 , wherein an outline of the first pixel of the plurality of first pixels is different from an outline of the third pixel of the plurality of first pixels.

19. 19. The method of claim 18, wherein the first pixel of the plurality of first pixels is located in a first row, the third pixel of the plurality of first pixels is located in a second row adjacent to the first row, and the extension direction of the first row and the extension direction of the second row are the second direction.

20. The method of claim 13 , wherein a size of the first plurality of pixels is different from a size of the second plurality of pixels.

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