Light-emitting panel, display device and method for determining missing part

Abstract

The invention discloses a light-emitting panel, a display device and a determination method of a missing part. The light-emitting panel provided by the embodiment of the invention comprises a substrate; the organic light-emitting structure is positioned on one side of the substrate and comprises a first electrode positioned on the surface of the substrate; the light convergence layer is located on one side, deviating from the substrate, of the organic light-emitting structure and comprises lenses in one-to-one correspondence with the organic light-emitting structures; the center of the lens deviates towards a first direction relative to a prefabricated center of a first electrode in the corresponding organic light-emitting structure, the first electrode is provided with a missing part, the missing part is located in a second direction of the prefabricated center, and the second direction is opposite to the first direction. In this way, CRA reverse brightness is greatly reduced, and reverse light leakage of the screen is greatly weakened.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a light-emitting panel, a display device and a method for determining a missing portion. Background Art

[0002] In recent years, AR (Augmented Reality) / VR (Virtual Reality) technology has become more mature and has received more and more attention from the consumer market and manufacturing industry. Micro OLED microdisplay is a miniature organic light-emitting diode display that uses a mono-silicon integrated circuit as a backplane and a top-emitting OLED (Organic Light Emitted Transistor) device as a light source. It has the advantages of small size, light weight, high contrast, fast response speed and low power consumption, and is expected to become the next generation of mobile display terminals.

[0003] In the related technology, Micro OELD microdisplay uses a white light EL (Emitting Light) plus a CF (Color Filter) structure to achieve color display. Angle customization under the weak microcavity architecture is based on the size of the required customized angle. The Lens corresponding to the RGB pixel is offset relative to the anode at different image height positions by a certain offset to achieve the angle customization requirements and effects. With the increase of the CRA (chief ray angle) angle and image height, the required CF and Lens offsets become larger. When the Lens is offset to a certain extent, the light-emitting surfaces of two adjacent pixels will be covered at the same time, that is, one Lens gathers the light emitted by two pixels, causing the CRA reverse brightness to increase and the screen to leak light in the opposite direction.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0005] The purpose of the present application is to provide a light-emitting panel, a display device, and a method for determining a missing portion. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0006] According to one aspect of an embodiment of the present application, there is provided a light emitting panel, comprising:

[0007] substrate substrate;

[0008] An organic light emitting structure located on one side of the base substrate, the organic light emitting structure comprising a first electrode located on a surface of the base substrate;

[0009] A light converging layer located on a side of the organic light emitting structure away from the base substrate, the light converging layer comprising lenses corresponding to the organic light emitting structures one by one;

[0010] The center of the lens is offset toward a first direction relative to a prefabricated center of a first electrode in the corresponding organic light-emitting structure, and the first electrode has a missing portion, and the missing portion is located in a second direction of the prefabricated center, and the second direction is opposite to the first direction.

[0011] In some embodiments of the present application, the light-emitting panel includes a first organic light-emitting structure and a second organic light-emitting structure, the distance between the prefabricated center of the first electrode in the first organic light-emitting structure and the center of the light-emitting panel is a first distance, the distance between the prefabricated center of the first electrode in the second organic light-emitting structure and the center of the light-emitting panel is a second distance, the first distance is not equal to the second distance, and the area of ​​the missing portion of the first electrode in the first organic light-emitting structure is different from the area of ​​the missing portion of the first electrode in the second organic light-emitting structure.

[0012] In some embodiments of the present application, the area of ​​the missing portion is positively correlated with the configuration distance, and the configuration distance is the distance between the prefabricated center of the first electrode in the organic light-emitting structure and the center of the light-emitting panel.

[0013] In some embodiments of the present application, the area of ​​the missing portion is less than or equal to half of the prefabricated area of ​​the first electrode.

[0014] In some embodiments of the present application, the orthographic projection of the first electrode on the base substrate does not overlap with the orthographic projection of the lens adjacent in the second direction on the base substrate, and the orthographic projection of the missing portion on the base substrate is located within the orthographic projection of the lens adjacent in the second direction on the base substrate.

[0015] In some embodiments of the present application, the plurality of organic light emitting diodes are arranged in a circle relative to the center of the light emitting panel, and the first direction is a direction from the center of the light emitting panel to the prefabricated center of the first electrode.

[0016] In some embodiments of the present application, the missing portions of the plurality of first electrodes located on the same circumference have the same area, and the missing portions of the plurality of first electrodes located on the same circumference are symmetrical with respect to the center of the light-emitting panel.

[0017] In some embodiments of the present application, the missing portion is located on the inner side of a circle formed by prefabricated centers of a plurality of the first electrodes.

[0018] In some embodiments of the present application, the light-emitting panel also includes a color filter layer located between the organic light-emitting structure and the light convergence layer, the color filter layer includes a plurality of filter units, the filter units correspond one-to-one to the lenses, and the orthographic projection of the lens on the base substrate is located within the orthographic projection of the corresponding filter unit on the base substrate.

[0019] In some embodiments of the present application, the light-emitting panel further includes a planarization layer located between the light-converging layer and the color filter layer, and a cover plate located on the light-converging layer.

[0020] In some embodiments of the present application, the prefabricated shape of the first electrode includes a circle, an ellipse, a square or a regular hexagon.

[0021] According to another aspect of the embodiments of the present application, a display device is provided, comprising the light-emitting panel described in any embodiment of the present application.

[0022] According to another aspect of an embodiment of the present application, a method for determining a missing portion is provided, which is applied to the light-emitting panel described in any embodiment of the present application, and the method includes:

[0023] Acquire a first direction in which the center of the lens is offset from a prefabricated center of the first electrode;

[0024] The position of the missing portion on the first electrode is determined according to the first direction, and the position of the missing portion is located in a second direction of the prefabrication center, and the second direction is opposite to the first direction.

[0025] In some embodiments of the present application, before obtaining the first direction in which the center of the lens is offset from the prefabricated center of the first electrode, the method further includes:

[0026] Determine whether there is an overlapping portion between an orthographic projection of a lens adjacent to the lens in the second direction on the surface of the substrate and a prefabricated area of ​​the first electrode;

[0027] In the case where there is an overlapping portion, it is determined that the missing portion includes the overlapping portion.

[0028] In some embodiments of the present application, the method further includes:

[0029] Acquire a third distance by which the center of the lens is offset in the first direction relative to a prefabricated center of the first electrode, and a fourth distance between the prefabricated center and the center of the light-emitting panel;

[0030] The area and shape of the missing portion are determined according to the third distance and the fourth distance.

[0031] In some embodiments of the present application, before determining the position of the missing portion on the first electrode, the method further includes:

[0032] The position of the first electrode is reset so that the reset position is offset along the second direction compared with the original position.

[0033] The technical solution provided by one aspect of the embodiments of the present application may have the following beneficial effects:

[0034] The light-emitting panel provided in the embodiment of the present application includes a base substrate, an organic light-emitting structure and a light-converging layer, wherein the organic light-emitting structure is located on one side of the base substrate and includes a first electrode located on the surface of the base substrate, the light-converging layer is located on the side of the organic light-emitting structure away from the base substrate, and includes lenses corresponding to the organic light-emitting structures one by one, wherein the center of the lens is offset toward a first direction relative to a prefabricated center of the first electrode in the corresponding organic light-emitting structure, and the first electrode has a missing portion, wherein the missing portion is located in a second direction of the prefabricated center, and the second direction is opposite to the first direction, thereby greatly reducing the CRA reverse brightness and greatly reducing the reverse light leakage of the screen.

[0035] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of an OLED in the related art is shown.

[0038] Figure 2 A schematic diagram showing CRA of an OLED in the related art is shown.

[0039] Figure 3 A schematic diagram showing the CRA angle setting of OLED and lens focusing in the related art is shown.

[0040] Figure 4 A schematic diagram of light brightness attenuation of CRA of OLED in the related art is shown.

[0041] Figure 5 A schematic structural diagram of a light emitting panel according to an embodiment of the present application is shown.

[0042] Figure 6 The first electrode of one embodiment of the present application is shown along Figure 5 The view in the direction indicated by arrow F.

[0043] Figure 7 A light emitting panel according to an embodiment of the present application is shown along Figure 5 The view in the direction indicated by arrow F.

[0044] Figure 8 A schematic diagram of CRA brightness attenuation of the first electrode according to an embodiment of the present application is shown.

[0045] FIG9( a ) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is circular according to an embodiment of the present application.

[0046] FIG9( b ) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is an ellipse according to an embodiment of the present application.

[0047] FIG9( c ) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is a square according to an embodiment of the present application.

[0048] FIG9( d ) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is a regular hexagon according to an embodiment of the present application.

[0049] Fig.10 A flow chart of a method for determining a missing portion according to an embodiment of the present application is shown.

[0050] Fig.11 A flow chart of a method for determining a missing portion according to another embodiment of the present application is shown.

[0051] Fig.12 A schematic diagram showing the offset of the lens and the first electrode according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0053] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0054] In related technologies, such as Figure 1 As shown, the Micro OELD microdisplay uses a structure of white light EL (Emitting Light) plus a color filter (CF) to achieve color display. The microdisplay includes a light-emitting device 1, a thin film package 2, a color filter 3, a flattening layer 4, a lens 5, an optically transparent adhesive 6, and a glass cover plate 7. Light-emitting device EL. Color filter 3 Red, green, and blue color filters. Glass cover plate is cover glass, referred to as CG. CF (Color Filter) absorbs light of a specific wavelength to allow monochromatic red (blue / green) light to pass. TFE (Thin Film Encapsulation) protects OLED devices. Because OLED materials and cathodes (cathode, generally Mg / Ag) are sensitive to H2O and O2 (easily oxidized), thin film packaging technology is required to isolate water and oxygen to protect OLED devices. Optically transparent adhesive is Optical Clear Resin, referred to as OCR. The lens in Micro OLED mainly focuses light and improves the brightness at the normal viewing angle. By shifting the lens relative to the anode, the brightest angle can be changed to achieve angle customization. The distance from the center to the edge of the screen is defined as the image height, such as 1mm outward from the center of the screen is defined as 1mm image height. When the lens is shifted, the color filter CF can be shifted together with the lens.

[0055] refer to Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a Micro OLED device of another embodiment of the related technology. The CF and Lens corresponding to the light-emitting surface of the RGB pixel are not offset. Through the convergence effect of the Lens, light from a large angle is converged to a small angle to achieve the brightness enhancement function.

[0056] Figure 3 It is an angle customization design solution in the related technology. By offsetting the CF and Lens relative to the anode light emitting center, the maximum brightness angle is changed to achieve angle customization. Figure 3The light-emitting surfaces of the anode in the middle bottom layer are the light-emitting surfaces corresponding to the RGB pixels from left to right, and the RGB colored glue and lens are located upwards. Taking the G pixel as an example, after the CF and lens corresponding to the G pixel are offset, the lens of the G pixel itself converges the light emitted from the right side at a large angle to the CRA direction, achieving the CRA design purpose. However, the light emitted from the left side of the G pixel at a large angle will pass through the lens corresponding to the R pixel and converge to the non-CRA direction (CRA reverse direction), causing the CRA reverse brightness to increase, causing problems such as CRA reverse light leakage. Figure 4 The measured CRA brightness attenuation curve under the customized design of this angle is shown. It can be seen that the CRA reverse brightness attenuation is warped and the reverse light leakage is serious. It can be seen that the brightness focused on the reverse side of CRA mainly comes from the bottom anode light-emitting surface away from the CRA side. Reducing or eliminating the light from this side can reduce the brightness in the CRA direction. CRA (Chief Ray Angle) refers to the maximum angle at which light is focused on the pixel.

[0057] Problems existing in the related technology include: as the CRA (chief ray angle) angle and image height increase, the required CF and Lens offset become larger, and when the Lens offset reaches a certain extent, the light-emitting surfaces of two adjacent pixels will be covered at the same time, that is, one Lens gathers the light emitted by two pixels, causing the CRA reverse brightness to increase and the screen reverse light leakage problem.

[0058] A light-emitting panel proposed according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0059] An embodiment of the present application provides a light-emitting panel, which may include:

[0060] Substrate substrate; the material of the substrate substrate includes but is not limited to single crystal silicon;

[0061] An organic light emitting structure located on one side of the base substrate, the organic light emitting structure comprising a first electrode located on a surface of the base substrate;

[0062] A light converging layer located on a side of the organic light emitting structure away from the base substrate, the light converging layer comprising lenses corresponding to the organic light emitting structures one by one;

[0063] The center of the lens is offset toward a first direction relative to a prefabricated center of a first electrode in a corresponding organic light-emitting structure. The first electrode has a missing portion located in a second direction of the prefabricated center. The second direction is opposite to the first direction.

[0064] The light-emitting panel includes but is not limited to an OLED (Organic Light-Emitting Diode) display screen. The first electrode may be, for example, an anode. The prefabricated center of the first electrode may be the geometric center of the shape of the surface of the first electrode on the side facing away from the substrate. For example, if the surface of the first electrode on the side facing away from the substrate is circular, the prefabricated center of the first electrode is the center of the circle. The surface of the first electrode on the side facing away from the substrate is a light-emitting surface, and the shape of the light-emitting surface is a prefabricated shape.

[0065] refer to Figure 5 As shown, Figure 5 The light emitting panel shown includes a substrate, a plurality of light emitting devices, a thin film package 2 , a color filter 3 , a planarization layer 4 , a plurality of lenses, an optically transparent adhesive 6 and a glass cover 7 . Figure 5 , three first electrodes are shown, namely, a first electrode 11, a first electrode 12 and a first electrode 13, and the width of each first electrode is EL_1; Figure 5 Three lenses are shown, namely lens 21, lens 22 and lens 23, lens 21 corresponds to the first electrode 11, lens 22 corresponds to the first electrode 12, lens 23 corresponds to the first electrode 13, and the center of lens 21 is oriented toward the first direction (the first direction is Figure 1 The center of the lens 22 is offset by a distance of Shift_0 relative to the prefabricated center of the corresponding first electrode 12 toward the first direction, and the center of the lens 23 is offset by a distance of Shift_0 relative to the prefabricated center of the corresponding first electrode 13 toward the first direction. The first direction is parallel to the surface of the first electrode 12 that is away from the substrate.

[0066] By reducing the size of the light-emitting surface at a specific position of the first electrode, a missing portion is formed on the first electrode, thereby achieving a reduction in CRA reverse brightness, and the position where the light-emitting surface size is reduced is opposite to the offset direction of the color filter CF and Lens (including but not limited to the case where the color filter CF and Lens are offset at the same time and the CF and Lens are offset differentially).

[0067] refer to Figure 6 As shown, Figure 6 A view of a first electrode 24 along the direction indicated by arrow F is shown. The prefabricated shape of the first electrode 24 is circular. The direction indicated by arrow F is perpendicular to the light-emitting surface of the first electrode 24 . The first electrode 24 has a missing portion 241 .

[0068] refer to Figure 7 As shown, Figure 7 shows a light emitting panel along Figure 5The view in the direction indicated by arrow F, Figure 7 9 first electrodes are shown in the figure, among which the orthographic projection of the center of the first electrode 15 on one side surface of the light-emitting panel coincides with the geometric center point E of the side surface of the light-emitting panel, and the geometric center point E coincides with the projection of the screen center of the light-emitting panel on the side surface. The other 8 first electrodes are divided into two groups, namely the first group and the second group, with four first electrodes in each group; the orthographic projection of the center of each first electrode in the first group on the side surface of the light-emitting panel is located on the circle S1, and the orthographic projection of the center of each first electrode in the second group on the side surface of the light-emitting panel is located on the circle S2, and both circles S1 and S2 have the geometric center point E as their centers, and the radius of circle S1 is smaller than the radius of circle S2.

[0069] If the color filter CF and Lens are offset upward / downward / leftward / rightward relative to the prefabricated center of the corresponding first electrode, the specific position where the light-emitting surface size of the first electrode is reduced is located in the area below / upper / rightward / leftward of the first electrode, that is, in whichever direction the color filter CF and Lens are offset relative to the first electrode, the first electrode is cut in the area in the opposite direction of the offset. Figure 7 As shown, from the center to the edge of the OLED screen, CF and Lens are offset outward relative to the corresponding first electrode, so the first electrode is cut on the side opposite to the offset on the light-emitting surface corresponding to the first electrode.

[0070] For example, if the color filter CF and Lens are offset to the right relative to the prefabricated center of the corresponding first electrode, the left size of the light-emitting surface at the corresponding position of the first electrode is reduced; if the color filter CF and Lens are offset upward relative to the prefabricated center of the corresponding first electrode, the lower size of the light-emitting surface at the corresponding position of the first electrode is reduced. At the same time, the amount of reduction in the size of the light-emitting surface of the first electrode is different on different CRA image height circles. Generally speaking, a larger image height matches a larger CRA angle, so the larger the image height, the larger the area of ​​the light-emitting surface of the first electrode that is cropped, and the cropped area is usually not greater than 50% of the original area, that is, EL_1≥0.5*EL_0, where EL_0 is the width of the first electrode in the first direction before being cropped, and EL_1 is the length of the remaining part of the first electrode in the first direction after being cropped.

[0071] In one example, the following relationship is satisfied among the size reduction amount Δs of the light emitting surface area, the brightness reduction amount ΔL, the light emitting surface area ψ, and the gain η of the first electrode:

[0072] △L=k*△s, k is the proportionality coefficient, △s≤0.5*luminous surface area, that is, the more the size is reduced, the more the brightness is reduced;

[0073] △L=k*1 / ψ*△s, that is, under the same size reduction, the larger the light-emitting surface area, the less the brightness decreases, and the smaller the light-emitting surface area, the more the brightness decreases;

[0074] △L=k*η*△s, that is, under the same reduced size, the higher the gain, the more the brightness decreases, and the lower the gain of the first electrode, the less the brightness decreases.

[0075] Figure 8 The CRA brightness attenuation diagram of the first electrode after the missing part is cut out is shown. Figure 8 It can be determined that after eliminating the light emission of the light-emitting surface of the first electrode away from the CRA side, the CRA reverse brightness can be significantly reduced while achieving the CRA customized angle, and the reverse light leakage can be reduced.

[0076] In some embodiments, the light-emitting panel may include a first organic light-emitting structure and a second organic light-emitting structure, the distance between a prefabricated center of a first electrode in the first organic light-emitting structure and the center of the light-emitting panel is a first distance, the distance between a prefabricated center of the first electrode in the second organic light-emitting structure and the center of the light-emitting panel is a second distance, the first distance is not equal to the second distance, and the area of ​​a missing portion of the first electrode in the first organic light-emitting structure is different from the area of ​​a missing portion of the first electrode in the second organic light-emitting structure.

[0077] refer to Figure 7 As shown, the first distance corresponding to each first electrode in the first group is not equal to the second distance corresponding to each first electrode in the second group, and the area of ​​the missing portion of each first electrode in the first group is different from the area of ​​the missing portion of each first electrode in the second group.

[0078] In some embodiments, the area of ​​the missing portion is positively correlated with the configuration distance, and the configuration distance is the distance between the prefabricated center of the first electrode in the organic light-emitting structure and the center of the light-emitting panel.

[0079] The surface of the first electrode facing away from the substrate is a light-emitting surface, the shape of the light-emitting surface is a prefabricated shape, and the prefabricated area is the area of ​​the prefabricated shape. In some embodiments, the area of ​​the missing portion is less than or equal to half of the prefabricated area of ​​the first electrode.

[0080] In some embodiments, the orthographic projection of the first electrode on the base substrate does not overlap with the orthographic projection of the lens adjacent in the second direction on the base substrate, and the orthographic projection of the missing portion on the base substrate is located within the orthographic projection of the lens adjacent in the second direction on the base substrate.

[0081] In some embodiments, the plurality of organic light emitting diodes are arranged in a circle relative to the center of the light emitting panel, and the first direction is a direction from the center of the light emitting panel to the prefabricated center of the first electrode.

[0082] In some embodiments, the missing portions of the plurality of first electrodes located on the same circumference have the same area, and the missing portions of the plurality of first electrodes located on the same circumference are symmetrical with respect to the center of the light emitting panel.

[0083] In some embodiments, the missing portion is located inside a circle formed by prefabricated centers of the plurality of first electrodes.

[0084] In some embodiments, the light-emitting panel also includes a color filter layer located between the organic light-emitting structure and the light convergence layer, the color filter layer includes a plurality of filter units, the filter units correspond to the lenses one by one, and the orthographic projection of the lens on the substrate is located within the orthographic projection of the corresponding filter unit on the substrate.

[0085] In some embodiments, the light emitting panel further includes a planarization layer located between the light converging layer and the color filter layer, and a cover plate located on the light converging layer.

[0086] In some embodiments, the prefabricated shape of the first electrode includes a circle, an ellipse, a square or a regular hexagon. Different cutting methods can be used for first electrodes of different prefabricated shapes, but the cutting position must ensure that it is opposite to the offset direction of the CF and Lens relative to the corresponding first electrode. Figure 9(a)-Figure 9(d) The cropping shapes at different positions on the annular CRA image height are shown respectively, including but not limited to annular CRA and circular cropping. Different cropping methods can be selected according to the actual light output conditions.

[0087] The cutting method is mainly related to the shape (projection) of the lens. For example, if the lens is hemispherical, its orthographic projection on the substrate is circular. When the micro lens is offset relative to the corresponding first electrode, the projected circular surface will overlap with the surface of the corresponding first electrode. The cut part is the overlapping area. Therefore, the cutting method of the first electrode is mainly determined by the shape of the lens. Generally speaking, the micro lens is hemispherical or hemispherical. When it is matched with first electrodes of different prefabricated shapes, the corresponding overlapping surface shapes will be different. Therefore, the cutting method of first electrodes of different prefabricated shapes is different.

[0088] Figure 9(a) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is a circle. Figure 9(a) shows five first electrodes, the first electrode located at the center retains the circular prefabricated shape, and the other four first electrodes are prepared with missing parts on the basis of the prefabricated shape; Figure 9(b) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is an elliptical shape, the first electrode located at the center retains the elliptical prefabricated shape, and the other four first electrodes are prepared with missing parts on the basis of the prefabricated shape; Figure 9(c) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is a square, the first electrode located at the center retains the square prefabricated shape, and the other four first electrodes are prepared with missing parts on the basis of the prefabricated shape; Figure 9(d) shows a schematic diagram of a light-emitting panel in which the prefabricated shape of the first electrode is a regular hexagon, the first electrode located at the center retains the regular hexagonal prefabricated shape, and the other four first electrodes are prepared with missing parts on the basis of the prefabricated shape.

[0089] The light-emitting panel of the embodiment of the present application can significantly reduce the CRA reverse brightness and significantly reduce the reverse light leakage of the screen, and to a large extent solves the problems existing in the related art such as excessive lens offset resulting in too low CRA angle brightness, too high CRA reverse brightness, and reverse light leakage.

[0090] Another embodiment of the present application provides a display device, including a light-emitting panel of any embodiment of the present application. The display device can achieve the beneficial technical effects that can be achieved by the light-emitting panel of any embodiment of the present application, can significantly reduce the CRA reverse brightness, and significantly reduce the reverse light leakage of the screen, and to a large extent solves the problems existing in the related art such as too large lens offset leading to too low CRA angle brightness, too high CRA reverse brightness, and reverse light leakage.

[0091] refer to Fig.10 As shown, another embodiment of the present application provides a method for determining a missing portion, which is applied to a light-emitting panel of any embodiment of the present application. The method may include:

[0092] S30, obtaining a first direction in which the center of the lens is offset relative to a prefabricated center of the first electrode;

[0093] S40. Determine the position of the missing portion on the first electrode according to the first direction, wherein the position of the missing portion is located in a second direction of the prefabrication center, and the second direction is opposite to the first direction.

[0094] By determining the missing portion using the missing portion determining method of the embodiment of the present application, it is possible to reduce the reverse brightness of the CRA by reducing the size of the light emitting surface of the first electrode.

[0095] refer to Fig.11As shown, in some embodiments, before obtaining the first direction in which the center of the lens is offset relative to the prefabricated center of the first electrode, the method may further include:

[0096] S10, determining whether there is an overlapping portion between an orthographic projection of a lens adjacent to the lens in the second direction on the surface of the substrate and a prefabricated area of ​​the first electrode;

[0097] Wherein, the prefabricated area is the area where the prefabricated shape of the first electrode is located;

[0098] S20. When there is an overlapping portion, determine that the missing portion includes the overlapping portion.

[0099] In some embodiments, the method may further include:

[0100] S50, acquiring a third distance in the first direction by which the center of the lens is offset from the prefabricated center of the first electrode, and a fourth distance between the prefabricated center and the center of the light-emitting panel;

[0101] S60: Determine the area and shape of the missing portion according to the third distance and the fourth distance.

[0102] The third distance is the distance that the center of the lens is offset in the first direction relative to the prefabricated center of the first electrode, and the fourth distance between the prefabricated center and the center of the light-emitting panel is the image height of the first electrode. Since the offset distance of the lens and the image height of the first electrode are both factors that affect the missing portion, the area and shape of the missing portion can be determined according to the third distance and the fourth distance. For example, the area and shape of the missing portion corresponding to the third distance and the fourth distance can be determined according to the predetermined association relationship of the third distance-fourth distance-missing portion area-missing portion shape. The association relationship of the third distance-fourth distance-missing portion area-missing portion shape can be determined based on empirical data. By determining the area and shape of the missing portion based on the third distance and the fourth distance, taking into account the influence of both factors, image height and lens offset, the size reduction of the light-emitting surface of the first electrode can be more accurately determined, effectively reducing the reverse brightness of the CRA.

[0103] In some embodiments, before determining the position of the missing portion on the first electrode, the method may further include: resetting the position of the first electrode so that the re-set position is offset along the second direction compared to the original position.

[0104] For example, the following two methods can be used to achieve CRA reverse brightness reduction:

[0105] The first method: the center position of the first electrode can be kept unchanged, and the light-emitting surface of the first electrode can be cropped according to the image height, that is, the position of the first electrode remains unchanged, and the light-emitting surface of the first electrode is differentially reduced according to the image height to achieve CRA reverse brightness reduction;

[0106] The second method: Reference Fig.12 As shown, the center position of the first electrode can be offset along the second direction, and the light-emitting surface of the first electrode can be cropped. That is, the first electrode at different image heights is offset in the opposite direction while changing the size of the light-emitting surface of the first electrode, and the offset distance is Shift_EL. In this way, when the offset distances of CF and Lens are the same, the relative offset of the second method (the relative offset is the sum of the offset distance of the Lens and the offset distance of the first electrode) is greater than the relative offset of the first method (the relative offset is the offset distance of the Lens), that is, Shift_1>Shift_0. The second method can be applied to situations where a larger CRA angle is required, and to the CRA design of the four corners of the screen when the CRA is required to cover the entire screen.

[0107] The method for determining the missing part in the embodiment of the present application can significantly reduce the CRA reverse brightness and significantly reduce the reverse light leakage of the screen, and to a large extent solves the problems existing in the related art such as excessive lens offset resulting in too low CRA angle brightness, too high CRA reverse brightness, and reverse light leakage.

[0108] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0109] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0110] The above embodiments only express the implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A light-emitting panel, characterized in that: include: substrate substrate; An organic light emitting structure located on one side of the base substrate, the organic light emitting structure comprising a first electrode located on a surface of the base substrate; A light converging layer located on a side of the organic light emitting structure away from the base substrate, the light converging layer comprising lenses corresponding to the organic light emitting structures one by one; The center of the lens is offset toward a first direction relative to a prefabricated center of a first electrode in the corresponding organic light-emitting structure, and the first electrode has a missing portion, and the missing portion is located in a second direction of the prefabricated center, and the second direction is opposite to the first direction.

2. The light emitting panel according to claim 1, characterized in that: The light-emitting panel includes a first organic light-emitting structure and a second organic light-emitting structure, the distance between a prefabricated center of a first electrode in the first organic light-emitting structure and the center of the light-emitting panel is a first distance, the distance between a prefabricated center of a first electrode in the second organic light-emitting structure and the center of the light-emitting panel is a second distance, the first distance is not equal to the second distance, and the area of ​​a missing portion of the first electrode in the first organic light-emitting structure is different from the area of ​​a missing portion of the first electrode in the second organic light-emitting structure.

3. The light emitting panel according to claim 1, characterized in that: The area of ​​the missing portion is positively correlated with the configuration distance, and the configuration distance is the distance between the prefabricated center of the first electrode in the organic light-emitting structure and the center of the light-emitting panel.

4. The light emitting panel according to claim 1, characterized in that: The area of ​​the missing portion is less than or equal to half of the prefabricated area of ​​the first electrode.

5. The light emitting panel according to claim 1, characterized in that: The orthographic projection of the first electrode on the base substrate does not overlap with the orthographic projection of the lens adjacent in the second direction on the base substrate, and the orthographic projection of the missing portion on the base substrate is located within the orthographic projection of the lens adjacent in the second direction on the base substrate.

6. The light emitting panel according to claim 1, characterized in that: The plurality of organic light emitting diodes are arranged in a circle relative to the center of the light emitting panel, and the first direction is a direction pointing from the center of the light emitting panel to the prefabricated center of the first electrode.

7. The light emitting panel according to claim 6, characterized in that: The missing portions of the plurality of first electrodes located on the same circumference have the same area, and the missing portions of the plurality of first electrodes located on the same circumference are symmetrical with respect to the center of the light emitting panel.

8. The light emitting panel according to claim 6, characterized in that: The missing portion is located inside a circle formed by prefabricated centers of the plurality of first electrodes.

9. The light emitting panel according to claim 1, characterized in that: The light-emitting panel also includes a color filter layer located between the organic light-emitting structure and the light convergence layer, the color filter layer includes a plurality of filter units, the filter units correspond one-to-one to the lenses, and the orthographic projection of the lens on the base substrate is located within the orthographic projection of the corresponding filter unit on the base substrate.

10. The light emitting panel according to claim 9, characterized in that: The light emitting panel further comprises a planarization layer located between the light converging layer and the color filter layer, and a cover plate located on the light converging layer.

11. The light emitting panel according to any one of claims 1 to 10, characterized in that: The prefabricated shape of the first electrode includes a circle, an ellipse, a square or a regular hexagon.

12. A display device, characterized in that: A light emitting panel comprising the light emitting panel according to any one of claims 1 to 11.

13. A method for determining a missing portion, characterized in that: Applied to the light emitting panel according to any one of claims 1 to 11, the method comprising: Acquire a first direction in which the center of the lens is offset from a prefabricated center of the first electrode; The position of the missing portion on the first electrode is determined according to the first direction, and the position of the missing portion is located in a second direction of the prefabrication center, and the second direction is opposite to the first direction.

14. The method according to claim 13, characterized in that Before obtaining the first direction in which the center of the lens is offset from the prefabricated center of the first electrode, the method further includes: Determine whether there is an overlapping portion between an orthographic projection of a lens adjacent to the lens in the second direction on the surface of the substrate and a prefabricated area of ​​the first electrode; In the case where there is an overlapping portion, it is determined that the missing portion includes the overlapping portion.

15. The method according to claim 13 or 14, characterized in that The method further comprises: Acquire a third distance by which the center of the lens is offset in the first direction relative to a prefabricated center of the first electrode, and a fourth distance between the prefabricated center and the center of the light-emitting panel; The area and shape of the missing portion are determined according to the third distance and the fourth distance.

16. The method according to claim 13 or 14, characterized in that Before determining the position of the missing portion on the first electrode, the method further includes: The position of the first electrode is reset so that the reset position is offset along the second direction compared with the original position.

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