Display panel and display device

Abstract

This disclosure provides a display panel and a display device. One embodiment of the display panel includes: a substrate; a light-emitting unit layer, including a first electrode, a pixel defining layer, and a light-emitting layer defined by the pixel defining layer, stacked sequentially; and a color filter, including a black matrix layer and a plurality of color filter layers. The black matrix layer includes a plurality of black matrix openings, and the plurality of color filter layers are correspondingly disposed in the black matrix openings. The plurality of color filter layers include a first color filter layer of a first color, a second color filter layer of a second color, and a third color filter layer of a third color. The ratio of the aperture of the black matrix opening corresponding to at least two of the first, second, and third color filter layers to the wavelength of the emitted light wave below the color filter layer is approximately equal. The embodiments of this disclosure improve the light splitting phenomenon in the screen-off state by setting the relationship between the black matrix openings and the wavelength of the emitted light wave from the light-emitting layer.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) displays, with their self-emissive characteristics, exhibit low driving voltage, high luminous efficiency, fast response time, excellent clarity and contrast, a wide viewing angle of nearly 180°, a wide operating temperature range, and unique transparent fabrication capabilities.

[0003] Currently, the COE (CF on EL) solution, used to replace polarizers, has advantages such as low power consumption and high color gamut. However, when the screen is off and illuminated by a point light source, the reflected light diffracts due to the presence of the anode and the opening in the black matrix where the color filter layer is located, resulting in color separation. Figure 1 As shown. Utility Model Content

[0004] To address at least one of the aforementioned problems, a first aspect of this disclosure provides a display panel, comprising:

[0005] Substrate;

[0006] The light-emitting unit layer includes a first electrode, a pixel defining layer, and a light-emitting layer defined by the pixel defining layer, which are stacked sequentially.

[0007] A color filter includes a black matrix layer and multiple color filter layers. The black matrix layer includes multiple black matrix openings, and the multiple color filter layers are correspondingly arranged in the black matrix openings.

[0008] The multiple color filter layers include a first color filter layer of a first color, a second color filter layer of a second color, and a third color filter layer of a third color. The colors of the multiple color filter layers are the same as the emitted color of the underlying light-emitting layer.

[0009] The ratio of the aperture of the black matrix corresponding to at least two of the first, second, and third color filters to the wavelength of the emitted light wave below the color filter layer is approximately equal.

[0010] Optionally, at least two color filter layers include a first color filter layer and a second color filter layer, the first color is red, the second color is green, and the aperture of the black matrix opening satisfies:

[0011] 0.77 <d G / d R <0.90

[0012] Where, d Rd represents the aperture of the black matrix corresponding to the first color filter layer. G This indicates the aperture of the black matrix corresponding to the second color filter layer.

[0013] Optionally, the third color is blue, the black matrix opening corresponding to the first color filter layer is the first opening, the black matrix opening corresponding to the second color filter layer is the second opening, and the black matrix opening corresponding to the third color filter layer is the third opening; the ratio of the aperture of the black matrix opening corresponding to each of the first, second, and third color filter layers to the wavelength of the emitted light wave of the light-emitting layer below that color filter layer is approximately equal.

[0014] Optionally, the third color is blue, and the aperture of the black matrix opening satisfies:

[0015] 0.68 <d B / d R <0.80

[0016] Where, d B This indicates the aperture of the black matrix corresponding to the third color filter layer.

[0017] Optionally, the aperture of the black matrix opening satisfies:

[0018] 1 <d B / d R <2

[0019] Where, d B This indicates the aperture of the black matrix corresponding to the third color filter layer.

[0020] Optionally, the light-emitting layer includes multiple light-emitting units arranged in an array, each light-emitting unit including a first sub-unit of a first color, a second sub-unit of a second color, and two third sub-units of a third color.

[0021] Optionally, the orthographic projection of the black matrix opening on the substrate is a circle, and the diameter of the black matrix opening is the diameter of the circle; or the orthographic projection of the black matrix opening on the substrate is an ellipse or a polygon, and the diameter of the opening is the length of the major axis of the ellipse or polygon.

[0022] Optionally, the pixel defining layer includes multiple defining layer openings, the orthographic projection of the defining layer openings on the substrate is circular; the emission color of the light-emitting layer defined by the defining layer opening is the same as the color filter layer in the corresponding black matrix opening, and the diameter of each defining layer opening is approximately equal.

[0023] Optionally, the plurality of defining layer openings include a first defining opening defining a light-emitting layer of a first color, a second defining opening defining a light-emitting layer of a second color, and a third defining opening defining a light-emitting layer of a third color.

[0024] The plurality of defining layer openings and the plurality of black matrix openings satisfy:

[0025] c R >c G >c B ≥0

[0026] Among them, c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer on the substrate and the orthographic projection boundary of the corresponding first defining opening on the substrate. G c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer on the substrate and the orthographic projection boundary of the corresponding second defining opening on the substrate. B This represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the third color filter layer on the substrate and the orthographic projection boundary of the corresponding third defining opening on the substrate.

[0027] Optionally, the pixel defining layer includes multiple defining layer openings, and the emission color of the light-emitting layer defined by the defining layer opening is the same as the color of the color filter layer in the corresponding black matrix opening;

[0028] The plurality of defining layer openings include a first defining opening defining a light-emitting layer of a first color, a second defining opening defining a light-emitting layer of a second color, and a third defining opening defining a light-emitting layer of a third color;

[0029] The diameter of the opening in the defining layer satisfies:

[0030] b R =b G B ,and

[0031] 1 B / b R <2

[0032] Among them, b R b represents the diameter of the first defined opening. G b indicates the diameter of the second defining opening. B This indicates the diameter of the third defined opening.

[0033] Optionally, the plurality of defining layer openings and the plurality of black matrix openings satisfy:

[0034] c R >c G ≥0

[0035] Among them, c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer on the substrate 100 and the orthographic projection boundary of the corresponding first defining opening on the substrate. G ​​This represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer on the substrate and the orthographic projection boundary of the corresponding second defining opening on the substrate.

[0036] Optionally, the pixel defining layer includes multiple defining layer openings, and the emission color of the light-emitting layer defined by the defining layer opening is the same as the color of the color filter layer in the corresponding black matrix opening;

[0037] The multiple defining layer openings include: a first defining opening defining a light-emitting layer of a first color, a second defining opening defining a light-emitting layer of a second color, and a third defining opening defining a light-emitting layer of a third color, wherein the first color is red, the second color is green, and the third color is blue;

[0038] The slope of the pixel boundary layer forming the first boundary opening is a first angle, the slope of the pixel boundary layer forming the second boundary opening is a second angle, and the slope of the pixel boundary layer forming the third boundary opening is a third angle. The first angle, the second angle, and the third angle satisfy the following:

[0039] θ R >θ G >θ B

[0040] 0.985 <sin(2·θ G ) / sin(2·θ R <0.995

[0041] 0.970 <sin(2·θ B ) / sin(2·θ R <0.990

[0042] Where, θ R Let θ represent the first angle. G θ represents the second angle. B Indicates the third angle.

[0043] A second aspect of this disclosure provides a display device including a display panel as described above.

[0044] The beneficial effects of this disclosure are as follows:

[0045] This disclosure addresses existing problems by providing a display panel and display device. By setting the relationship between the wavelength of the light emitted from the black matrix opening and the light-emitting layer, the diffraction angle difference between different colors of light can be reduced, thereby improving the light splitting phenomenon in the screen-off state, enhancing the user experience of the display product, and showing broad application prospects. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This illustrates a typical light-splitting phenomenon in display products of the related technology when the screen is off;

[0048] Figure 2 This illustrates another typical light-splitting phenomenon in display products of the related technology when the screen is off;

[0049] Figure 3 Shown in Figure 2 In the other type of spectral splitting phenomenon, the slope angle of the pixel-defining layer affects the light path of the emitted light.

[0050] Figure 4 A schematic cross-sectional view of a display panel according to an embodiment of the present disclosure is shown;

[0051] Figure 5 The reflected light spectrum of a color filter according to an embodiment of the present disclosure is shown;

[0052] Figure 6 An exemplary top view of a color filter for a display panel according to an embodiment of the present disclosure is shown;

[0053] Figure 7 A top view illustrating a schematic definition of a layer opening according to an embodiment of the present disclosure is shown;

[0054] Figure 8 An exemplary top view of a color filter for a display panel according to another embodiment of the present disclosure is shown;

[0055] Figure 9 An exemplary top view of a color filter for a display panel according to another embodiment of the present disclosure is shown;

[0056] Figure 10 A simulation diagram of the diffraction aperture of a display panel according to embodiments of the present disclosure and related technologies is shown.

[0057] Figure 11 This diagram illustrates the physical relationship between the light source and the display panel when the screen is off.

[0058] Figure 12 A partial top view of a display panel according to an embodiment of the present disclosure is shown;

[0059] Figure 13 A partial top view of a display panel according to another embodiment of the present disclosure is shown;

[0060] Figure 14 A schematic diagram illustrating the effect of the slope angle of the pixel defining layer on the direction of diffracted light according to an embodiment of the present disclosure. Detailed Implementation

[0061] To more clearly illustrate this disclosure, the preferred embodiments and accompanying drawings will be used for further description. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.

[0062] It should be noted that, unless otherwise defined, the technical or scientific terms used in this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," or "including," etc., mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0063] Furthermore, this disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views as idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0064] The inventors discovered that the COE scheme structure includes a black matrix layer and color filter layers of various colors disposed in the openings of the black matrix layer. The formula for the diffraction angle is: Where λ is the wavelength of light and d is the aperture of the pinhole. When the screen is off, the opening in the black matrix layer forms the pinhole structure when the point light source illuminates the display panel, and diffraction will occur based on the formula of the diffraction angle. Different color filter layers emit red, green and blue wavelengths of different wavelengths, resulting in different diffraction angles for different colors of light. As a result, the red, green and blue stripes cannot overlap, thus causing color separation, or spectral separation.

[0065] The inventors further discovered that another color separation phenomenon may occur when the screen is off, referring to... Figure 2 As shown, the aperture size of this color separation is significantly larger than... Figure 1 The diffraction fringes shown are also known as the "large aperture phenomenon." Analysis revealed that this phenomenon originates from the blazed grating effect caused by the cathode layer on the slope of the pixel-defining layer. Figure 3 The diagram shows a comparison of the light paths formed by the blazed gratings constructed from cathode layers on the slopes of the pixel-defining layer at different slope angles, where slope angle θ1 < θ2. The opening of the pixel-defining layer is a single slot. When incident light is incident at a 0-degree angle, the principal pole direction of the single-slot diffraction is aligned with the direction of the reflected light, meaning the angle of the principal pole direction of the diffracted light is twice the slope angle. This portion of energy is assigned to and reinforces the k-th order principal fringe of the inter-slot interference, where k is a positive integer. When this portion of light can exit from the top layer of the display panel, a large aperture can be observed. Since different colors of diffracted light exit at different angles after entering the air, the large aperture will be split, appearing as… Figure 3 The sense of color shown.

[0066] Continue to refer to Figure 3 As shown, if we consider increasing the slope angle of the pixel boundary layer to θ2, at this slope angle, total internal reflection occurs at the interface between the display panel and air along the principal pole direction of the single-slot diffraction, thus preventing the observation of a large aperture and the occurrence of color separation. However, increasing the slope angle of the pixel boundary layer deteriorates the leveling properties of the organic encapsulation layer, requiring an increase in its thickness. This increase in thickness, in turn, leads to a series of adverse consequences, such as a deteriorated viewing angle and protrusions in the surrounding organic encapsulation layer.

[0067] Based on the above research, embodiments of this disclosure provide a display panel, including:

[0068] Substrate;

[0069] The light-emitting unit layer includes a first electrode, a pixel defining layer, and a light-emitting layer defined by the pixel defining layer, which are stacked sequentially.

[0070] A color filter includes a black matrix layer and multiple color filter layers. The black matrix layer includes multiple black matrix openings, and the multiple color filter layers are arranged one-to-one in the black matrix openings.

[0071] The multiple color filter layers include a first color filter layer of a first color, a second color filter layer of a second color, and a third color filter layer of a third color. The colors of the multiple color filter layers are the same as the emitted light color of the light-emitting layer below them. The ratio of the aperture of the black matrix corresponding to at least two of the first, second, and third color filter layers to the wavelength of the emitted light wave below the color filter layer is approximately equal.

[0072] In this embodiment, by setting the relationship between the black matrix opening and the wavelength of the emitted light wave from the light-emitting layer, the difference in diffraction angle between different colors of light can be reduced, thereby improving the light splitting phenomenon in the screen-off state and enhancing the user experience of the display product.

[0073] To illustrate the structure and function of this disclosure, a detailed description will be provided below with specific examples.

[0074] In a specific example, refer to Figure 4 As shown, the display panel includes: a substrate 100, a light-emitting unit layer, and a color filter.

[0075] The light-emitting unit layer includes a first electrode 201, a pixel defining layer 202, and a light-emitting layer 203 defined by the pixel defining layer 202, which are stacked sequentially. The light-emitting layer 203 includes multiple light-emitting layers of multiple colors, for example, a first light-emitting layer 203-1 of a first color, a second light-emitting layer 203-2 of a second color, and a third light-emitting layer 203-3 of a third color. The first light-emitting layer 203-1, the second light-emitting layer 203-2, and the third light-emitting layer 203-3 are disposed one-to-one in the pixel opening defined by the pixel defining layer 202. In this document, when no distinction is needed, the light-emitting layer is collectively referred to as "light-emitting layer 203". The first color, the second color, and the third color are different; for example, the first color is red, the second color is green, and the third color is blue. The pixel defining layer 202 may be made of an opaque material, such as black resin; however, this disclosure is not intended to limit its application.

[0076] The color filter includes a black matrix layer 301 and multiple color filter layers 302. The black matrix layer 301 can be an opaque film layer, such as black resin, but this disclosure is not intended to limit it. The black matrix layer 301 includes multiple black matrix openings, and multiple color filter layers 302 are correspondingly disposed in the black matrix openings. The multiple color filter layers 302 include a first color filter layer 302-1 of a first color, a second color filter layer 302-2 of a second color, and a third color filter layer 302-3 of a third color. In this document, when no distinction is needed, the light-emitting layers are collectively referred to as "light-emitting layer 302".

[0077] The colors of multiple color filter layers 302 are the same as the colors of the underlying light-emitting layer 203. For example, see reference... Figure 4 As shown, the red light-emitting layer 203-1 is set to correspond with the red color filter layer 302-1, the green light-emitting layer 203-2 is set to correspond with the green color filter layer 302-2, and the blue light-emitting layer 203-2 is set to correspond with the blue color filter layer 302-3.

[0078] Reference Figure 4As shown, the light-emitting unit layer may further include a second electrode layer 204 covering at least the light-emitting layer, and the second electrode layer 204 may include a cathode. Furthermore, the display panel may also include an encapsulation layer disposed on the light-emitting unit layer, the encapsulation layer may include a first inorganic encapsulation layer 401, an organic encapsulation layer 402, and a second inorganic encapsulation layer 403. The display panel may also include touch functionality; in this case, the display panel may include a touch layer, which may include a first conductive layer 501, a second conductive layer 503, and an isolation layer 502 disposed between the second conductive layer 501 and the second conductive layer 503. A dielectric layer 601 may be included between the touch layer and the color filter, and a protective layer 602 may be included on the side of the color filter away from the substrate 100. It should be understood that the above film layers are merely illustrative, and this disclosure is not intended to be limiting.

[0079] Specifically, the ratio of the aperture of the black matrix opening corresponding to at least two of the first color filter layers 302-1, the second color filter layer 302-2, and the third color filter layer 302-3 to the wavelength of the emitted light wave of that color filter layer is approximately equal. In the embodiments of this disclosure, "approximately" means that the absolute value of the difference between the ratio of the aperture of the black matrix opening corresponding to the compared color filter layer to the wavelength of the emitted light wave of that color filter layer is less than or equal to 10%, that is, the difference between the ratio of the aperture of the black matrix opening corresponding to the compared color filter layer to the wavelength of the emitted light wave of that color filter layer is greater than or equal to -10% and less than or equal to 10%.

[0080] Specifically, considering that the emitted light from any color filter layer follows the diffraction formula: sinθ=1.22λ / d, where θ represents the diffraction angle, when the diffraction angles of the emitted light from at least two color filter layers are approximately the same, the diffracted light of at least two colors can be made to roughly overlap, thereby improving the red, green and blue light separation phenomenon caused by the diffraction light separation of the COE structure under screen-off conditions.

[0081] As can be seen from the diffraction formula, when the diffraction angles of the emitted light from at least two color filters are approximately the same, the ratio of the aperture d of the black matrix corresponding to each color filter to the wavelength λ of the emitted light wave of that color filter is approximately the same (d / λ).

[0082] In other words, by setting the ratio of the aperture of the black matrix corresponding to at least two of the first, second, and third color filters to the wavelength of the emitted light wave of that color filter layer to be approximately equal, the red-green-blue light separation phenomenon caused by the diffraction light separation of the COE structure under screen-off conditions can be improved.

[0083] Optionally, at least two color filter layers include a first color filter layer and a second color filter layer, wherein the first color is red and the second color is green.

[0084] Specifically, refer to Figure 5As shown, based on the reflection spectrum of the emitted light waves of the color filter layer, the common wavelength range of red light is 590nm to 630nm, with a peak wavelength at approximately 610nm, and the common wavelength range of green light is 490nm to 530nm, with a peak wavelength at approximately 510nm.

[0085] When d R / λ R =d G / λ G When, we derive: d G / d R =λ G / λ R , where d R d represents the aperture of the black matrix corresponding to the first color filter layer. G λ represents the aperture of the black matrix corresponding to the second color filter layer. R λ represents the wavelength of the light emitted from the first color filter layer. G This indicates the wavelength of the light emitted from the second color filter layer.

[0086] according to Figure 5 The reflected spectrum shown typically has a peak wavelength of 610 nm for red light and 510 nm for green light. When both the peak wavelengths of red and green light are these two values, d... G / d R =510 / 610=0.84. It should be understood that the peak wavelength is the wavelength position where the energy distribution in a light wave is most concentrated, and therefore it can be used to represent the overall physical parameters of a light wave and to calculate the diffraction parameters of a light wave.

[0087] Considering that the peak wavelength has a certain fluctuation range, the common wavelength range for green light peak wavelength is 490–530 nm, and the common wavelength range for red light peak wavelength is 590–630 nm. Therefore, when the peak wavelength of green light reaches its minimum and the peak wavelength of red light reaches its maximum, d G / d R The minimum value is d. G / d R The minimum value is 490 / 630 = 0.777; similarly, when the peak wavelength of green light reaches its maximum value and the peak wavelength of red light reaches its minimum value, d G / d R The maximum value is d. G / d R The maximum value is 530 / 590 = 0.898, therefore d G / d R The value range can be 0.77. <d G / d R <0.90.

[0088] With the above settings, the aperture d of the black matrix opening corresponding to the second color filter layer 302-2 is... G The aperture d of the black matrix corresponding to the first color filter layer 302-1 R Within this range, the diffraction angle of the first color filter layer 302-1 is equal to that of the second color filter layer 302-2. As a result, the bright and dark fringes of the red and green diffracted light can overlap to the maximum extent, thereby minimizing the separation of red and green colors in the diffraction aperture. The red and green light are combined into yellow light, which can eliminate the red stripes that the human eye is most sensitive to, so that users will not feel obvious redness when the screen is off.

[0089] On the other hand, considering that the lifespan of the light-emitting layer that emits blue light is usually the worst, the aperture ratio of the blue pixel aperture can be increased by increasing the aperture of the black matrix aperture in which the third color filter layer 302-3 is set in the black matrix aperture, thereby balancing the lifespan of blue, red and green pixels.

[0090] Optionally, the aperture of the black matrix opening satisfies:

[0091] 1 <d B / d R <2

[0092] Where, d B This indicates the aperture of the black matrix corresponding to the third color filter layer 302-3. Figure 6 A top view of an exemplary color filter is shown when the above-mentioned value range is met. For ease of illustration, the color of the black matrix layer is presented as white. It can be seen that the area of ​​the orthogonal projection of the third color filter layer 302-3 disposed in the black matrix opening on the substrate is greater than the area of ​​the orthogonal projection of the first color filter layer 302-1 disposed in the black matrix opening on the substrate.

[0093] With this setting, the opening area of ​​the black matrix corresponding to the blue third color filter layer 302-3 can be 1 to 4 times the opening area of ​​the red first color filter layer 302-1, which is equivalent to the opening area of ​​the blue pixel being 1 to 4 times the opening area of ​​the red pixel.

[0094] This setting can balance the lifespan of red, green, and blue (RGB) colors while eliminating red diffraction stripes that are visually sensitive to users, thus giving the display product excellent lifespan performance.

[0095] Optionally, refer to Figure 7 As shown, the orthographic projection of the black matrix openings onto the substrate 100 is circular (see...). Figure 7 (Left view), the aperture of the black matrix opening is the diameter of a circle. Alternatively, the orthographic projection of the black matrix opening onto the substrate 100 is elliptical (see...). Figure 6 (Right view in the middle), the diameter of the opening is the length of the major axis of the ellipse.

[0096] It should be noted that this disclosure is not intended to limit the specific shape of the opening of the black matrix. When the shape of the opening of the black matrix is ​​elliptical, it can be as follows: Figure 7 The irregular ellipse shown, which is a portion cut off relative to the circle, can also be a regular ellipse that is symmetrical about the axis. Regardless of the shape of the ellipse, its diameter represents the length of the major axis of the ellipse. The major axis of an irregular ellipse can refer to the longest distance between two points on the figure. In addition, the opening of the black matrix can also be a polygon, including rectangles, squares, or other polygons. When the shape of the opening of the black matrix is ​​a polygon, its diameter is the major axis of the polygon, and in this case, the major axis refers to the longest distance between two points on the figure.

[0097] Alternatively, the orthographic projection shape of the opening of the pixel defining layer 202 on the substrate 100 is the same as the orthographic projection shape of the black matrix opening on the substrate 100. Furthermore, the orthographic projection of the black matrix opening on the substrate 100 should cover the orthographic projection of the opening of the pixel defining layer 202 on the substrate 100.

[0098] In some alternative embodiments, the black matrix opening corresponding to the first color filter layer is a first opening, the black matrix opening corresponding to the second color filter layer is a second opening, and the black matrix opening corresponding to the third color filter layer is a third opening. The ratio of the aperture of the black matrix opening corresponding to each of the first, second, and third color filter layers to the wavelength of the emitted light wave from the light-emitting layer below that color filter layer is approximately equal. Of course, in the embodiments of this disclosure, "approximately" means that the absolute value of the difference between the ratio of the aperture of the black matrix opening corresponding to the compared color filter layer to the wavelength of the emitted light wave of that color filter layer is less than or equal to 10%, that is, the difference between the ratio of the aperture of the black matrix opening corresponding to the compared color filter layer to the wavelength of the emitted light wave of that color filter layer is greater than or equal to -10% and less than or equal to 10%.

[0099] Since the emitted light from the color filter layer follows the diffraction formula: sinθ=1.22λ / d, the above settings can ensure that the diffracted light of the three colors roughly overlaps and merges into white light, thereby improving the color separation effect as optimally as possible.

[0100] Specifically, continue to refer to Figure 5 As shown, based on the reflection spectrum of the emitted light waves of the color filter layer, the common wavelength range of red light is 590nm to 630nm, with a peak wavelength at approximately 610nm; the common wavelength range of green light is 490nm to 530nm, with a peak wavelength at approximately 510nm; and the common wavelength range of blue light is 430nm to 470nm, with a peak wavelength at approximately 450nm.

[0101] From the above description, it can be seen that when d R / λR =d G / λ G At that time, within the fluctuation range of the peak wavelength, d G / d R The value range can be 0.77. <d G / d R The value is less than 0.90, which will not be discussed further here.

[0102] On the other hand, when d R / λ R =d B / λ B When, we derive: d B / d R =λ B / λ R , where d R d represents the aperture of the black matrix corresponding to the first color filter layer. B λ represents the aperture of the black matrix corresponding to the third color filter layer. R λ represents the wavelength of the light emitted from the first color filter layer. B This indicates the wavelength of the light emitted from the third color filter layer, which is blue.

[0103] according to Figure 5 The reflected spectrum shown typically has a peak wavelength of 610 nm for red light and 450 nm for green light. When both red and blue light have peak wavelengths of these values, d... G / d R =450 / 610=0.74.

[0104] Continue to refer to Figure 5 As shown, considering that the peak wavelength has a certain fluctuation range, the common wavelength range for blue light peak wavelength is 430–470 nm, and the common wavelength range for red light peak wavelength is 590–630 nm. Therefore, when the peak wavelength of blue light reaches its minimum and the peak wavelength of red light reaches its maximum, d B / d R The minimum value is d. B / d R The minimum value is 430 / 630 = 0.682; similarly, when the peak wavelength of blue light reaches its maximum value and the peak wavelength of red light reaches its minimum value, d B / d R The maximum value is d. B / d R The maximum value is 470 / 590 = 0.797, therefore d B / d R The value range can be 0.68 <d B / d R <0.80. Figure 8 A top view of an exemplary color filter is shown when the above-mentioned value range is met. For ease of illustration, the black matrix layer in this figure is presented as white.

[0105] With the above settings, the aperture d of the black matrix opening corresponding to the second color filter layer 302-2 is... G The aperture d of the black matrix corresponding to the first color filter layer 302-1 R This value range, and the aperture d of the black matrix corresponding to the third color filter layer 302-3. B The aperture d of the black matrix corresponding to the first color filter layer 302-1 R Within this range, the diffraction angle of the first color filter layer 302-1 is equal to that of the second color filter layer 302-2, and the diffraction angle of the third color filter layer 302-3 is equal to that of the first color filter layer 302-1. As a result, the bright and dark fringes of red, green, and blue diffracted light can overlap to the maximum extent and synthesize white light. This minimizes the separation of red, green, and blue colors in the diffraction aperture, thereby eliminating visible color separation fringes to the greatest extent. This ensures that users do not experience color separation when the screen is off, achieving the highest level of visual acceptance for the human eye.

[0106] It should be noted that, although Figure 8 The diagram shows that the orthographic projection of the black matrix opening on the substrate 100 is circular, but the embodiments of this disclosure are not limited to this. The orthographic projection of the black matrix opening on the substrate 100 can also be elliptical or other shapes. For example, when the orthographic projection of the black matrix opening on the substrate 100 is circular, the diameter of the black matrix opening is the diameter of the circle; when the orthographic projection of the black matrix opening on the substrate 100 is elliptical, the diameter of the opening is the length of the major axis of the ellipse. It should be understood that the major axis of an irregular ellipse can refer to the longest distance between two points on the pattern. Additionally, the black matrix opening can also be a polygon, including rectangles, squares, or other polygons. When the shape of the black matrix opening is a polygon, its diameter is the major axis of the polygon, where the major axis refers to the longest distance between two points on the pattern.

[0107] Alternatively, the orthographic projection shape of the opening of the pixel defining layer 202 on the substrate 100 is the same as the orthographic projection shape of the black matrix opening on the substrate 100. Furthermore, the orthographic projection of the black matrix opening on the substrate 100 should cover the orthographic projection of the opening of the pixel defining layer 202 on the substrate 100.

[0108] On the other hand, considering the lifespan of the light-emitting layer that emits blue light, in order to balance the lifespan of blue, red and green pixels, the light-emitting layer may optionally include multiple light-emitting units arranged in an array, each light-emitting unit including a first sub-unit of a first color, a second sub-unit of a second color, and two third sub-units of a third color.

[0109] Reference Figure 9 As shown, since the setting method of each color filter layer corresponds to the color of the light-emitting unit in the light-emitting layer, by limiting the color of the light-emitting unit in the light-emitting layer, the setting method of the color filter layer in the color filter is also limited.

[0110] Reference Figure 9 As shown in this example, the ratio of the aperture of each of the first opening of the first color filter layer 302-1, the second opening of the second color filter layer 302-2, and the third opening of the third color filter layer 302-3 in the black matrix opening to the wavelength of the light emitted by its color filter layer is approximately equal.

[0111] In other words, by setting the relationship between the apertures of each black matrix opening and increasing the number of blue light-emitting units to increase the area of ​​the blue light-emitting units, it is possible to balance the lifespan of blue pixels with that of red and green pixels, and also to make the diffracted light waves emitted from the color filter layer of each black matrix opening overlap as much as possible.

[0112] It should also be noted that, although Figure 9 The diagram shows that the orthographic projection of the black matrix opening onto the substrate is circular, but the embodiments of this disclosure are not limited to this; elliptical and polygonal patterns are also protected by this disclosure. Polygons include rectangles, squares, or other polygons.

[0113] It should also be understood that the orthographic projection shape of the opening of the pixel defining layer 202 on the substrate 100 is the same as the orthographic projection shape of the black matrix opening on the substrate 100. Furthermore, the orthographic projection of the black matrix opening on the substrate 100 should cover the orthographic projection of the opening of the pixel defining layer 202 on the substrate 100.

[0114] Figure 10The diagram shows a simulation comparison of the diffraction apertures of each color filter layer in the display panel of the above embodiment and the diffraction apertures of each color filter layer in related technologies. In the diagram, "BM diameter ratio" represents the aperture ratio of the black matrix opening, "R" in the horizontal direction represents the aperture of the black matrix opening corresponding to the red color filter layer, "G" represents the aperture of the black matrix opening corresponding to the green color filter layer, "B" represents the aperture of the black matrix opening corresponding to the blue color filter layer, "R" in the vertical direction represents the simulation effect of the diffraction aperture of the emitted light from the red color filter layer, "G" represents the simulation effect of the diffraction aperture of the emitted light from the green color filter layer, "B" represents the simulation effect of the diffraction aperture of the emitted light from the blue color filter layer, and "W" represents the simulation effect of the diffraction combined aperture of the emitted light from the red, green and blue color filter layers.

[0115] Reference Figure 10 As can be seen, in the COE structure design of related technologies, since the black matrix openings corresponding to each color filter layer do not meet the limitations of the above embodiments, the diffraction diaphragms of red light, green light, and blue light are significantly different, and the combined diffraction diaphragm of red, green, and blue light forms obvious red-green-blue color fringes; in the second row, d G / d R The value is 0.84, d B / d R The value is 0.74. The fringe sizes of the diffraction halos for red, green, and blue light are all the same, and the combined diffraction halos are distinctly white, which is the most visually acceptable. In the third row, d G / d R The value is 0.84, d B / d R The value is 1.18. The diffraction diaphragms of the red and green light are the same, but the fringe size of the blue light diffraction diaphragm is smaller. Although it does not ultimately combine to form a white diaphragm, no visible red fringes appear. Simultaneously, by increasing the size of the black matrix opening corresponding to the blue color filter layer, the lifetime of the blue pixels can be improved. Furthermore, it can be understood that although the structure of each emitting unit including two blue emitting sub-units is not shown in the figure, the actual effect of forming and synthesizing the diaphragm should be consistent with the simulation effect in the second row, which will not be elaborated upon here.

[0116] It should also be noted that, although Figure 6 , Figure 7 and Figure 8 The diagram shows that the sub-pixel layout corresponding to the black matrix opening is in RGB arrangement, but this disclosure is not limited to this. While satisfying the aperture range of the black matrix opening, the sub-pixel layout corresponding to the black matrix opening can also be in other layout methods such as pentile or delta, which will not be elaborated here.

[0117] Further research by the inventors revealed that if the light source in the screen-off state is a standard point light source or at least the distance from the black matrix opening is large enough, the diffraction pattern is determined solely by the black matrix opening itself. However, in actual observation, scenarios where the light source is close to the display panel cannot be excluded, and in such cases, the influence of the size of the pixel delimiting layer opening needs to be considered.

[0118] Therefore, when considering the influence of the size of the defining layer opening, the angular dimension b / (2×L) of the light source must be equal to λ / d in the diffraction angle equation to ensure that the blurring effect of the light source does not disrupt the overlapping effect of the diffraction fringes. (Refer to...) Figure 11 As shown, the sun pattern above the display panel represents the light source, and the sun pattern below represents the equivalent light source. Here, L represents the distance between the black matrix opening and the equivalent light source, and b represents the diameter of the defining layer opening.

[0119] Optionally, for Figure 8 and Figure 9 In terms of architecture, since the ratio of the aperture of the black matrix opening corresponding to each of the first color filter layer 302-1, the second color filter layer 302-2, and the third color filter layer 302-3 to the wavelength of the emitted light wave of that color filter layer is approximately equal, the angular size of the light source is also equal for each of the first color filter layer 302-1, the second color filter layer 302-2, and the third color filter layer 302-3. Because the distance L from the light source to each black matrix opening is also the same, the dimensional relationship that satisfies the equality of the light source angular size for each defining layer opening is as follows: the orthographic projection of the defining layer opening onto the substrate 100 is circular, and the diameter of each defining layer opening is approximately equal.

[0120] With this setting, for Figure 8 and Figure 9 The architecture corresponding to the black matrix opening size relationship ensures that, when considering the influence of the screen-off light source on the black matrix opening, the angular size of red, green and blue light is still exactly the same, thereby ensuring that the stripes of the diffraction light of each color filter layer completely overlap and are combined into white light, improving the acceptance of the human eye and the user experience.

[0121] It should also be noted that, because the opening diameters of the boundary layers for each color are equal at this point, while the opening diameters of the black matrix are related as follows: d R >d G >d B To ensure that the black matrix layer does not absorb the light emitted by the light-emitting layer in the pixel delimiting layer opening, the opening boundary of the black matrix layer opening needs to be outside the boundary of the delimiting layer opening or flush with the boundary of the delimiting layer opening.

[0122] Optionally, the opening of the black matrix and the opening of the defining layer satisfy: c R >c G >c B≥0, where c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer 302-1 on the substrate 100 and the orthographic projection boundary of the corresponding first defining opening on the substrate 100. G c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer 302-2 on the substrate 100 and the orthographic projection boundary of the corresponding second defining opening on the substrate 100. B The distance between the orthographic projection boundary of the black matrix opening corresponding to the third color filter layer 302-3 on the substrate 100 and the orthographic projection boundary of the corresponding third defining opening on the substrate 100, wherein the first defining opening represents the defining layer opening corresponding to the first color filter layer 302-1, the second defining opening represents the defining layer opening corresponding to the second color filter layer 302-2, and the third defining opening represents the defining layer opening corresponding to the third color filter layer 302-3. Figure 12 Example shows c R c G and c B exist Figure 8 The physical meaning of the architecture.

[0123] The inventors discovered that when the distance between the orthographic projection boundary of the black matrix opening on the substrate and the orthographic projection boundary of the defining layer opening on the substrate 100 is greater than 6 μm, the black matrix layer has almost no effect on the viewing angle light, and further increasing this value has no significant beneficial effect. Therefore, optionally, c R <7um.

[0124] When the distance between the orthographic projection boundary of the black matrix opening on the substrate and the orthographic projection boundary of the defining layer opening on the substrate 100 is less than 3µm, the black matrix layer has a significant impact on the viewing angle light. Therefore, c can be set. R >3um. c G and c B You can choose the maximum value to set if the space allows.

[0125] Optionally, for Figure 6 In terms of architecture, the aperture of the black matrix opening of the third color filter layer 302-3 is larger due to the consideration of the lifespan of the blue light pixels. To match this, in this example, it is also possible to require that the size of the opening of the defining layer corresponding to the first color filter layer 302-1 and the second color filter layer 302-2 be equal, while the size of the opening of the defining layer corresponding to the third color filter layer 302-3 is increased to match the black matrix opening.

[0126] Specifically, the diameter of the opening in the defining layer satisfies:

[0127] b R =b G <bB ,and

[0128] 1 B / b R <2

[0129] Among them, b R b represents the diameter of the first defined opening. G b indicates the diameter of the second defining opening. B The third defining opening is the diameter of the third defining opening. The first defining opening is the defining layer opening corresponding to the first color filter layer, the second defining opening is the opening corresponding to the second color filter layer, and the third defining opening is the defining layer opening corresponding to the third color filter layer.

[0130] With this setting, for those who meet the requirements Figure 6 The architecture corresponding to the black matrix aperture size relationship ensures that the angular size of red and green light is exactly the same when considering the influence of the screen-off light source on the black matrix aperture. This ensures that the diffracted light of the two color film layers is combined into yellow light, which has low sensitivity to the human eye, while increasing the lifespan of blue pixels. This improves the acceptance of the human eye and the user experience, while also increasing the overall lifespan of the display product.

[0131] Optionally, to ensure that the black matrix layer does not absorb the light emitted by the light-emitting layer in the pixel defining layer opening, and in accordance with the dimensional relationship between the defining layer opening and the black matrix opening, the plurality of defining layer openings and the plurality of black matrix openings satisfy the following:

[0132] c R >c G ≥0

[0133] Among them, c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer 302-1 on the substrate 100 and the orthographic projection boundary of the corresponding first defining opening on the substrate. G This represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer 302-2 on the substrate 100 and the orthographic projection boundary of the corresponding second defining opening on the substrate 100. The distance c between the orthographic projection boundary of the black matrix opening corresponding to the third color filter layer 302-3 on the substrate 100 and the orthographic projection boundary of the third defining opening on the substrate 100. B It can be greater than c R Or somewhere in c R and c G Between, at this time c R and c B It can be between 3 and 7 μm, c G You can choose the maximum value to set if the space allows. Figure 13 Example shows c​R c G and c B exist Figure 6 The physical meaning of the architecture.

[0134] The inventors further considered that other film layers in the medium of the emitted light wave of the light-emitting layer have a higher refractive index for short-wavelength light than for long-wavelength light. In other words, if the slope angle of the pixel-defining layer 202 of each color light-emitting layer is the same, the diffraction angles of red, green and blue light after entering the air will also be different, resulting in large-aperture spectral dispersion and presenting a color perception that is unacceptable to the human eye.

[0135] Optionally, combined Figure 11 and Figure 14 As shown, the slope of the pixel boundary layer forming the first boundary opening is the first angle, the slope of the pixel boundary layer forming the second boundary opening is the second angle, and the slope of the pixel boundary layer forming the third boundary opening is the third angle. The first angle, the second angle, and the third angle satisfy the following:

[0136] θ R >θ G >θ B

[0137] 0.985 <sin(2·θ G ) / sin(2·θ R <0.995

[0138] 0.970 <sin(2·θ B ) / sin(2·θ R <0.990

[0139] Where, θ R Let θ represent the first angle. G θ represents the second angle. B This refers to the third angle.

[0140] Specifically, in combination Figure 14 As shown, the refractive index of the surface layer of a display panel in contact with air at the air interface is typically 1.5–1.6 for the blue light band. Generally, the refractive index of the dielectric material for blue light is greater than that for red light, and the refractive index for different colors of light satisfies n… B >n G >n R and 0.01≤n G -n R ≤0.02, 0.01≤n B -n G ≤0.02, where n Bn represents the refractive index of blue light for the surface layer (the film layer in contact with air) of the display panel furthest from the substrate. G n represents the refractive index of green light for the surface layer (the film layer in contact with air) of the display panel furthest from the substrate. R This indicates the refractive index of red light for the surface layer (the film layer in contact with air) of the display panel furthest from the substrate.

[0141] To ensure that the sinα of all colors of light is the same, the angle α represents the diffraction angle of the light entering the air. In the diagram, the diffraction angles of red, green, and blue light entering the air are labeled as α. B α G and α B Then n must satisfy B ×sin(2·θ B ) = n G ×sin(2·θ G ) = n R ×sin(2·θ R ), that is: θ R >θ G >θ B Specifically, for sin(2·θ) G ) / sin(2·θ R Its minimum value appears in n. B =1.5 and n G -n R =0.02, n B -n G When n = 0.02, then n R / n G =1.46 / 1.48 = 0.986, and its maximum value appears in n. B =1.6 and n G -n R =0.01, n B -n G When n = 0.01, then n R / n G =1.58 / 1.59 = 0.994, therefore, sin(2·θ) G ) / sin(2·θ R The value of ) can be in the range of 0.985. <sin(2·θ G ) / sin(2·θ R <0.995.

[0142] Similarly, for sin(2*θ) B ) / sin(2*θ R Its minimum value appears in n. B =1.5 and n G -nR =0.02, n B -n G When n = 0.02, then n R / n G =1.46 / 1.5 = 0.973, its maximum value appears in n B =1.6 and n G -n R =0.01, n B -n G When n = 0.01, then n R / n B =1.58 / 1.6 = 0.988, therefore, sin(2·θ) B ) / sin(2·θ R The value range of ) can be 0.970. <sin(2·θ B ) / sin(2·θ R )<0.990.

[0143] Based on the above settings, refer to Figure 14 As shown, in the large aperture phenomenon caused by the slope angle of the pixel defining layer 202 that defines different color light-emitting layers, the diffracted light exit angle α of red, green and blue light is... R α G and α B Similarly, red, green, and blue light are combined to form white light, and a large aperture produces white light, which is most acceptable to the human eye. It should be noted that this embodiment can be used with any of the above-described architectures; that is, embodiments that satisfy the black matrix opening relationship and the defining layer opening relationship of the above embodiments are all applicable to this embodiment.

[0144] Based on the same inventive concept, embodiments of this disclosure also provide a display device, including the display panel described in the above embodiments. Since the display panel included in the display device provided in this disclosure corresponds to the display panel provided in the above embodiments, the preceding embodiments are also applicable to the display device provided in this embodiment, and will not be described in detail here.

[0145] In this embodiment, the display device can be any product or component with display functionality, such as an in-vehicle display device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. When the aforementioned display panel is loaded into a real device, the human eye will not perceive a noticeable colored halo when the display device is in the off state, significantly improving the user experience.

[0146] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.

Claims

1. A display panel, characterized in that, include: Substrate; The light-emitting unit layer includes a first electrode, a pixel defining layer, and a light-emitting layer defined by the pixel defining layer, which are stacked sequentially. A color filter includes a black matrix layer and multiple color filter layers. The black matrix layer includes multiple black matrix openings, and the multiple color filter layers are correspondingly disposed in the black matrix openings. The plurality of color filter layers includes a first color filter layer of a first color, a second color filter layer of a second color, and a third color filter layer of a third color. The colors of the plurality of color filter layers are the same as the light emitted by the light-emitting layer below them. The ratio of the aperture of the black matrix corresponding to at least two of the first, second, and third color filters to the wavelength of the emitted light wave of that color filter layer is approximately equal.

2. The display panel according to claim 1, characterized in that, The at least two color filter layers include a first color filter layer and a second color filter layer, wherein the first color is red and the second color is green. The aperture of the black matrix opening satisfies: 0.77<d G / d R <0.90 Where, d R d represents the aperture of the black matrix corresponding to the first color filter layer. G This indicates the aperture of the black matrix corresponding to the second color filter layer.

3. The display panel according to claim 2, characterized in that, The third color is blue. The black matrix opening corresponding to the first color filter layer is the first opening, the black matrix opening corresponding to the second color filter layer is the second opening, and the black matrix opening corresponding to the third color filter layer is the third opening. The ratio of the aperture of each of the first opening, the second opening, and the third opening to the wavelength of the light emitted from the color filter layer therein is approximately equal.

4. The display panel according to claim 3, characterized in that, The third color is blue. The aperture of the black matrix opening satisfies: 0.68<d B / d R <0.80 Where, d B This indicates the aperture of the black matrix corresponding to the third color filter layer.

5. The display panel according to claim 2, characterized in that, The aperture of the black matrix opening satisfies: 1<d B / d R <2 Where, d B This indicates the aperture of the black matrix corresponding to the third color filter layer.

6. The display panel according to claim 3, characterized in that, The light-emitting layer includes multiple light-emitting units arranged in an array. Each light-emitting unit includes a first sub-unit of the first color, a second sub-unit of the second color, and two third sub-units of the third color.

7. The display panel according to any one of claims 1-6, characterized in that, The orthographic projection of the black matrix opening onto the substrate is circular, and the diameter of the black matrix opening is the diameter of the circle, or... The orthographic projection of the black matrix opening onto the substrate is an ellipse or a polygon, and the diameter of the opening is the length of the major axis of the ellipse or the polygon.

8. The display panel according to claim 3 or 6, characterized in that, The pixel defining layer includes multiple defining layer openings. The orthographic projection of the opening in the defining layer onto the substrate is circular. The emission color of the light-emitting layer defined by the opening of the defining layer is the same as the color of the color filter layer in the corresponding black matrix opening, and the diameter of each opening of the defining layer is approximately equal.

9. The display panel according to claim 8, characterized in that, The plurality of defining layer openings include a first defining opening defining a light-emitting layer of the first color, a second defining opening defining a light-emitting layer of the second color, and a third defining opening defining a light-emitting layer of the third color. The plurality of defining layer openings and the plurality of black matrix openings satisfy: c R >c G >c B ≥0 Among them, c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer on the substrate and the orthographic projection boundary of the corresponding first defining opening on the substrate. G c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer on the substrate and the orthographic projection boundary of the corresponding second defining opening on the substrate. B This represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the third color filter layer on the substrate and the orthographic projection boundary of the corresponding third defining opening on the substrate.

10. The display panel according to claim 4 or 5, characterized in that, The pixel defining layer includes multiple defining layer openings, and the emission color of the light-emitting layer defined by the defining layer openings is the same as the color filter layer color in the corresponding black matrix opening. The plurality of defining layer openings include a first defining opening defining a light-emitting layer of the first color, a second defining opening defining a light-emitting layer of the second color, and a third defining opening defining a light-emitting layer of the third color. The diameter of the opening in the defining layer satisfies: b R =b G B ,and​ 1<b B / b R <2 Among them, b R b represents the diameter of the first defined opening. G b represents the diameter of the second defining opening. B This indicates the diameter of the third defined opening.

11. The display panel according to claim 10, characterized in that, The plurality of defining layer openings and the plurality of black matrix openings satisfy: c R >c G ≥0 Among them, c R c represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the first color filter layer on the substrate and the orthographic projection boundary of the corresponding first defining opening on the substrate. G This represents the distance between the orthographic projection boundary of the black matrix opening corresponding to the second color filter layer on the substrate and the orthographic projection boundary of the corresponding second defining opening on the substrate.

12. The display panel according to claim 1, characterized in that, The pixel defining layer includes multiple defining layer openings, and the emission color of the light-emitting layer defined by the defining layer openings is the same as the color filter layer color in the corresponding black matrix opening. The plurality of defining layer openings include: a first defining opening defining a light-emitting layer of a first color, a second defining opening defining a light-emitting layer of a second color, and a third defining opening defining a light-emitting layer of a third color, wherein the first color is red, the second color is green, and the third color is blue. The slope of the pixel defining layer forming the first defining opening is a first angle, the slope of the pixel defining layer forming the second defining opening is a second angle, and the slope of the pixel defining layer forming the third defining opening is a third angle. The first angle, the second angle, and the third angle satisfy the following: i R >θ G >θ B 0.985 <sin(2·θ G ) / sin(2·θ R )<0.995 0.970 <sin(2·θ B ) / sin(2·θ R )<0.990 Where, θ R Let θ represent the first angle. G θ represents the second angle. B This refers to the third angle.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1-12.

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