Display panel and display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes a substrate, a plurality of light-emitting units, and a color filter layer. The color filter layer includes a black matrix that surrounds the opening region of the light-emitting units and includes a first black matrix and a second black matrix. Along the first direction, the maximum distance from the first black matrix to the light-emitting units is M, and the maximum distance from the second black matrix to the light-emitting units is N, where M < N. By setting M < N, more large-view-angle light can be emitted from the side of the light-emitting unit close to the first black matrix, or a part of the large-view-angle light cannot be emitted from the side of the light-emitting unit close to the second black matrix, thereby reducing the difference in brightness loss of the light-emitting units in the second direction and the third direction and effectively improving the display effect.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly, to a display panel and a display device. Background Art

[0002] Organic light-emitting display panels have the advantages of being thin, light, with a wide viewing angle, self-luminous, low cost, fast response speed, and low energy consumption, and have become a display technology with great development prospects. Organic light-emitting display panels include organic light-emitting diodes, which are organic light-emitting materials arranged between an anode and a cathode, and then a voltage is applied to the organic light-emitting materials through the anode and the cathode to emit light.

[0003] The organic light emitting display panel includes a plurality of sub-pixels arranged in a certain arrangement. Due to the limitation of the sub-pixel structure in the prior art, the viewing angle brightness loss of the organic light emitting display panel varies along different directions, which affects the display effect.

[0004] Therefore, providing a display panel and a display device with improved display effect is an urgent problem to be solved. Summary of the invention

[0005] In view of this, the present invention provides a display panel and a display device to improve the display effect.

[0006] In one aspect, the present invention provides a display panel, comprising:

[0007] substrate substrate;

[0008] A plurality of light emitting units are located on one side of the base substrate;

[0009] A color filter layer is located on a side of the light-emitting unit away from the substrate, the color filter layer includes a black matrix, along a first direction, the black matrix surrounds the opening area of ​​the light-emitting unit, the first direction is a direction perpendicular to the substrate; the black matrix includes a first black matrix and a second black matrix, the first black matrix extends along a second direction, and the second direction intersects with the first direction; the second black matrix extends along a third direction, and the third direction intersects with the first direction and the second direction respectively; the first black matrix is ​​adjacent to and connected to the second black matrix, along the second direction, the length of the first black matrix is ​​P, along the third direction, the length of the second black matrix is ​​Q, P>Q; along the first direction, the maximum distance from the first black matrix to the light-emitting unit is M, the maximum distance from the second black matrix to the light-emitting unit is N, M <N。

[0010] On the other hand, the present invention further provides a display device, comprising the above-mentioned display panel.

[0011] Compared with the prior art, the display panel and the display device provided by the present invention achieve at least the following beneficial effects:

[0012] A substrate; a plurality of light-emitting units located on one side of the substrate; a color filter layer located on the side of the light-emitting units away from the substrate, the color filter layer includes a black matrix, along a first direction, the black matrix surrounds the opening area of the light-emitting unit, the first direction is perpendicular to the substrate, the size of the opening area can define the angle of light emission, the larger the size of the opening area, the more light can be emitted, conversely, the smaller the size of the opening area, the less light can be emitted; the black matrix includes a first black matrix and a second black matrix, the first black matrix extends along a second direction, the second direction intersects with the first direction; the second black matrix extends along a third direction, the third direction intersects with the first direction and the second direction respectively; the first black matrix and the second black matrix are adjacent and connected, along the second direction, the length of the first black matrix is P, along the third direction, the length of the second black matrix is Q, P>Q, the length of the light-emitting unit along the second direction is greater than the width of the light-emitting unit along the third direction, that is, the brightness loss of the light-emitting unit along the third direction is greater than the brightness loss of the light-emitting unit along the second direction; along the first direction, the maximum distance from the first black matrix to the light-emitting unit is M, the maximum distance from the second black matrix to the light-emitting unit is N, M<N, so that more large-angle light can be emitted through the side of the light-emitting unit close to the first black matrix, or a part of the large-angle light cannot be emitted through the side of the light-emitting unit close to the second black matrix, thereby reducing the difference in brightness loss between the second direction and the third direction of the light-emitting unit and effectively improving the display effect.

[0013] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned technical effects simultaneously.

[0014] Other features and advantages of the present invention will become clear from the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0016] Figure 1 is a schematic plan view of a display panel provided by the present invention;

[0017] Figure 2 is Figure 1 a cross-sectional view taken along the line A-A' in;

[0018] Figure 3 is Figure 1 a cross-sectional view taken along the line B-B' in;

[0019] Figure 4 is a schematic diagram of a planar structure of another display panel provided by the present invention;

[0020] Figure 5 yes Figure 1 Another cross-sectional view along the B-B' direction;

[0021] Figure 6 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0022] Figure 7 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0023] Figure 8 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0024] Fig. 9 yes Figure 1 Another cross-section in the B-B' direction;

[0025] Fig.10 yes Figure 1 A cross-section in the C-C' direction;

[0026] Fig.11 It is a schematic diagram of the planar structure of another display device provided by the present invention. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is a schematic diagram of a planar structure of a display panel provided by the present invention; Figure 2 yes Figure 1 A-A' section view; Figure 3 yes Figure 1 Sectional view along the B-B' direction; Figure 4 It is a schematic diagram of the planar structure of another display panel provided by the present invention.

[0033] This embodiment provides a display panel 100, including:

[0034] Substrate substrate 01;

[0035] A plurality of light emitting units 02 are located on one side of the base substrate 01;

[0036] The color filter layer 03 is located on a side of the light-emitting unit 02 away from the base substrate 01. The color filter layer 03 includes a black matrix 031. Along the first direction X, the black matrix 031 surrounds the opening area 04 of the light-emitting unit 02. The first direction X is a direction perpendicular to the base substrate 01. The black matrix 031 includes a first black matrix 031a and a second black matrix 031b. The first black matrix 031a extends along the second direction Y, and the second direction Y intersects with the first direction X. The second black matrix 031b extends along the third direction Z, and the third direction Z intersects with the first direction X and the second direction Y respectively. The first black matrix 031a is adjacent to and connected to the second black matrix 031b. Along the second direction Y, the length of the first black matrix 031a is P, and along the third direction Z, the length of the second black matrix 031b is Q, and P>Q. Along the first direction X, the maximum distance from the first black matrix 031a to the light-emitting unit 02 is M, and the maximum distance from the second black matrix 031b to the light-emitting unit 02 is N, and M <N。

[0037] It should be noted that the display panel 100 provided in this embodiment may be an organic light-emitting display panel 100, which includes a plurality of light-emitting units 02, and the light-emitting unit 02 includes a stacked anode layer 021, a light-emitting layer 022, and a cathode layer 023. Voltage is applied to the light-emitting layer 022 through the anode layer 021 and the cathode layer 023 to emit light. Specifically, electrons and holes as carriers migrate from the cathode layer 023 and the anode layer 021 to the light-emitting layer 022, meet and converge in the light-emitting layer 022 to form excitons, and the excitons are activated to release energy. The released energy causes the light-emitting molecules of the light-emitting layer 022 to emit visible light through radiation relaxation. The anode layer 021 is located on the side of the cathode layer 023 away from the base substrate 01, or the anode layer 021 is located on the side of the cathode layer 023 close to the base substrate 01. Both can be adjusted according to needs, and this embodiment does not make specific limitations. The substrate 01 provided in this embodiment is used as a carrier to carry other structures of the display panel 100. Specifically, the substrate 01 can be a rigid substrate or a flexible substrate. When the substrate 01 is a rigid substrate, the material of the substrate 01 can be glass, transparent resin, etc.; when the substrate 01 is a flexible substrate, the material of the substrate 01 can be polycarbonate, polyimide, etc. The display panel 100 also includes an array layer (not shown in the figure) located between the substrate 01 and the light-emitting unit 02. The array layer includes a gate metal layer, a source and drain metal layer, an active layer, and an insulating layer between each conductive film layer. The array layer is used to control whether the light-emitting unit 02 emits light or not. A planarization layer (not shown in the figure) is also provided on the side of the array layer away from the substrate to planarize the surface of the array layer, so as to facilitate the production of the light-emitting unit 02. A pixel definition layer 05 is provided on the side of the planarization layer away from the array layer. The pixel definition layer 05 includes an opening area 04. The orthographic projection of the light-emitting unit 02 on the substrate substrate 01 overlaps with the orthographic projection of the opening area 04 on the substrate substrate 01. The color filter layer 03 is located on a side of the encapsulation layer 06 away from the light-emitting unit 02 , and includes a black matrix 031 . The black matrix 031 is used to shield the non-luminous area of ​​the display panel 100 to avoid crosstalk between lights of different colors and affect the display effect. Figure 1 and Figure 4 The display panel 100 is only shown as a rectangle. Of course, it can also be a rectangle with rounded corners or a special-shaped structure, etc., and there is no specific limitation on this.

[0038] Understandably, Figure 1 Only one arrangement of the light emitting units 02 is shown. Figure 4 Only another arrangement of the light emitting units 02 is shown. Of course, the structure and arrangement of the light emitting units 02 are not limited thereto. The light emitting units 02 whose lengths along the second direction Y and the lengths along the third direction Z are not equal are all within the protection scope of this embodiment. Figure 1 , Figure 2 and Figure 3 , taking a light-emitting unit 02 as an example, along the first direction X, the black matrix 031 surrounds the opening area 04 of the light-emitting unit 02. The black matrix 031 includes a first black matrix 031a and a second black matrix 031b. The first black matrix 031a extends along the second direction Y, and the second black matrix 031b extends along the third direction Z. The first black matrix 031a is adjacent to and connected to the second black matrix 031b. Along the second direction Y, the length of the first black matrix 031a is P, and along the third direction Z, the length of the second black matrix 031b is Q, where P > Q, that is, the length of the light-emitting unit 02 along the second direction Y is greater than the width of the light-emitting unit 02 along the third direction Z. Along the first direction X, the maximum distance from the first black matrix 031a to the light-emitting unit 02 is M, and the maximum distance from the second black matrix 031b to the light-emitting unit 02 is N, where M < N. In Figure 2 and Figure 3 , only the heights of the first black matrix 031a and the second black matrix 031b along the first direction X are shown to be unequal to achieve M < N. The shape of the first black matrix 031a in Figure 2 is rectangular, and the shape of the second black matrix 031b in Figure 3 is rectangular, but it is not limited thereto. The light emitted from the side of the light-emitting unit 02 close to the first black matrix 031a and whose propagation path passes through the edge of the first black matrix 031a forms an angle with the first direction X, which is denoted as the first angle. When the maximum distances between the first black matrix 031a, the second black matrix 031b and the light-emitting unit 02 along the first direction X are equal, the angle of the first angle is θ1. On this basis, the distance between the side of the first black matrix 031a far from the substrate 01 and the light-emitting unit 02 is reduced. At this time, the angle of the first angle is θ2, where θ1 < θ2, so that more large-view-angle light can be emitted from the side of the light-emitting unit 02 close to the first black matrix 031a, that is, the brightness loss of the light-emitting unit 02 along the third direction is reduced. Further, the difference in brightness loss between the light-emitting unit 02 in the second direction Y and the third direction Z can be reduced, effectively improving the display effect. The difference between M and N is preferably 0 - 3 um.

[0039] Compared with the prior art, the display panel 100 provided in this embodiment achieves at least the following beneficial effects:

[0040] Substrate 01; a plurality of light-emitting units 02 located on one side of the substrate 01; a color filter layer 03 located on the side of the light-emitting units 02 away from the substrate 01. The color filter layer 03 includes a black matrix 031. Along the first direction X (the first direction X is perpendicular to the substrate 01), the black matrix 031 surrounds the opening area 04 of the light-emitting units 02. The size of the opening area 04 can define the angle of light emission. The larger the size of the opening area 04, the more light can be emitted. Conversely, the smaller the size of the opening area 04, the less light can be emitted. The black matrix 031 includes a first black matrix 031a and a second black matrix 031b. The first black matrix 031a extends along the second direction Y (the second direction Y intersects with the first direction X). The second black matrix 031b extends along the third direction Z (the third direction Z intersects with the first direction X and the second direction Y respectively). The first black matrix 031a is adjacent to and connected to the second black matrix 031b. Along the second direction Y, the length of the first black matrix 031a is P. Along the third direction Z, the length of the second black matrix 031b is Q, and P>Q. The length of the light-emitting unit 02 along the second direction Y is greater than the width of the light-emitting unit 02 along the third direction Z, that is, the brightness loss of the light-emitting unit 02 along the third direction Z is greater than the brightness loss of the light-emitting unit 02 along the second direction Y. Along the first direction X, the maximum distance from the first black matrix 031a to the light-emitting unit 02 is M, and the maximum distance from the second black matrix 031b to the light-emitting unit 02 is N, and M<N. This allows more large-angle light to be emitted from the side of the light-emitting unit 02 close to the first black matrix 031a, or prevents some large-angle light from being emitted from the side of the light-emitting unit 02 close to the second black matrix 031b, which can reduce the difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z and effectively improve the display effect.

[0041] In some alternative embodiments, with continued reference to Figure 1 、 Figure 2 and Figure 3 , the display panel 100 further includes a packaging layer 06, and the packaging layer 06 is located between the light-emitting units 02 and the color filter layer 03.

[0042] It can be understood that the packaging layer 06 is used to protect the light-emitting units 02 and other film layers from the influence of external water and oxygen. The packaging layer 06 can be a thin-film packaging layer, and the thin-film packaging layer includes an inorganic layer and an organic layer. Specifically, the inorganic layer and the organic layer are stacked alternately to achieve packaging.

[0043] In some alternative embodiments, with reference to Figure 1 、 Figure 2 and Figure 5 , Figure 5 is Figure 1In another cross-sectional view taken along the BB′ direction, a protrusion 07 is provided on one side of the encapsulation layer 06 close to the color filter layer 03 . Along the first direction X, the protrusion 07 at least partially overlaps with the second black matrix 031 b .

[0044] It is understandable that in Figure 5 The middle encapsulation layer 06 includes a first inorganic layer 061, an organic layer 062, and a second inorganic layer 063 ( Figure 5 The packaging layer 06 is not pattern filled). Figure 5 The number of layers and stacking structure in the middle packaging layer 06 are for illustration only, but are not limited thereto. Figure 5 It is only shown that the second inorganic layer 063 is located between the organic layer 062 and the light-emitting unit 02, the first inorganic layer 061 is located on the side of the organic layer 062 away from the second inorganic layer 063, and the side of the first inorganic layer 061 away from the organic layer 062 is provided with a protrusion 07, but it is not limited thereto. By providing the encapsulation layer 06 with a protrusion 07, the protrusion 07 at least partially overlaps with the second black matrix 031b, which can increase N, that is, along the first direction X, the distance between the side of the second black matrix 031b away from the substrate 01 and the light-emitting unit 02 is increased. Specifically, the heights of the first black matrix 031a and the second black matrix 031b along the first direction X can be equal or unequal, as long as the distance between the side of the second black matrix 031b away from the substrate 01 and the light-emitting unit 02 is greater than the distance between the side of the first black matrix 031a away from the substrate 01 and the light-emitting unit 02. The light emitted from the side of the light-emitting unit 02 close to the second black matrix 031b and whose propagation path passes through the edge of the second black matrix 031b forms an angle with the first direction X, which is recorded as the second angle. When the maximum distances between the first black matrix 031a, the second black matrix 031b and the light-emitting unit 02 are equal along the first direction X, the angle of the second angle is δ1. On this basis, the distance between the side of the second black matrix 031b away from the substrate 01 and the light-emitting unit 02 is increased. At this time, the angle of the second angle is δ2, δ2<δ1, so that a part of the wide-viewing angle light cannot be emitted through the side of the light-emitting unit 02 close to the second black matrix 031b, further increasing the brightness loss of the light-emitting unit 02 along the second direction Y, thereby reducing the difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z, and effectively improving the display effect.

[0045] In some optional embodiments, referring to Figure 1 , Figure 3 and Figure 6 , Figure 6 yes Figure 1 In another cross-sectional view taken along line AA′, a groove 08 is provided on one side of the encapsulation layer 06 close to the color filter layer 03 , and at least a portion of the first black matrix 031 a is located in the groove 08 .

[0046] Understandably, Figure 6 The middle encapsulation layer 06 includes a first inorganic layer 061, an organic layer 062, and a second inorganic layer 063 ( Figure 6 The packaging layer 06 is not pattern filled. Figure 6 The number of layers and stacking structure in the middle packaging layer 06 are for illustration only, but are not limited thereto. Figure 6 It is only shown that the second inorganic layer 063 is located between the organic layer 062 and the light-emitting unit 02, the first inorganic layer 061 is located on the side of the organic layer 062 away from the second inorganic layer 063, and the side of the first inorganic layer 061 away from the organic layer 062 is provided with a groove 08, but it is not limited thereto. The groove 08 is provided by the encapsulation layer 06, and the first black matrix 031a is at least partially located in the groove 08, which reduces the distance between the side of the first black matrix 031a away from the substrate 01 and the light-emitting unit 02, that is, M is reduced. Specifically, the heights of the first black matrix 031a and the second black matrix 031b in the first direction X can be equal or unequal, as long as the distance between the side of the first black matrix 031a away from the substrate 01 and the light-emitting unit 02 is less than the distance between the side of the second black matrix 031b away from the substrate 01 and the light-emitting unit 02. When the maximum distances between the first black matrix 031a, the second black matrix 031b and the light-emitting unit 02 are equal along the first direction X, the angle of the first angle is θ3. On this basis, the distance between the side of the first black matrix 031a away from the substrate 01 and the light-emitting unit 02 is reduced. At this time, the angle of the first angle is θ4, θ3<θ4, so that more wide-viewing angle light can be emitted through the side of the light-emitting unit 02 close to the first black matrix 031a, further reducing the brightness loss of the light-emitting unit 02 along the third direction Z, thereby reducing the difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z, and effectively improving the display effect.

[0047] In some optional embodiments, referring to Figure 1 , Figure 3 and Figure 7 , Figure 7 yes Figure 1 In another cross-sectional view along the AA′ direction, the width of the first black matrix 031a along the third direction Z is positively correlated with the difference between M and N.

[0048] It is understandable that in Figure 7The dotted line structure in the figure only illustrates the structure and position of the first black matrix 031a when M=N, and the first angle is θ5 at this time. There is a difference between M and N, which can reduce the difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z. When the difference between M and N can achieve no difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z, on this basis, the difference between M and N is further increased, so that the brightness loss of the light-emitting unit 02 along the third direction Z is less than the brightness loss along the second direction Y, and the length of the first black matrix 031a along the third direction Z is increased to balance the brightness loss of the light-emitting unit 02 along the second direction Y and the third direction Z. Since the length of the first black matrix 031a along the third direction Z is increased, the reflectivity can also be reduced. The increased length of the first black matrix 031a along the third direction Z is preferably 0-5um.

[0049] In some optional embodiments, referring to Figure 1 , Figure 8 and Fig. 9 , Figure 8 yes Figure 1 Another cross-sectional view along the A-A' direction, Fig. 9 yes Figure 1 In another cross-sectional view taken along the BB' direction, the color filter layer 03 further includes a plurality of color resist units 032, and the color resist units 032 are arranged one-to-one with the light-emitting units 02. Along the first direction X, the color resist units 032 at least partially overlap with the black matrix 031; the first black matrix 031a is located on a side of the color resist unit 032 close to the base substrate 01, and the second black matrix 031b is located on a side of the color resist unit 032 away from the base substrate 01.

[0050] It should be noted that Figure 8 and Fig. 9 It is only shown that the first black matrix 031a and the second black matrix 031b are respectively located on both sides of the color resistance unit 032, which is equivalent to the color resistance unit 032 raising the entire second black matrix 031b, increasing the distance between the side of the second black matrix 031b away from the base substrate 01 and the light-emitting unit 02, so as to increase the difference between M and N. Of course, the color resistance unit 032 can also be set to raise only one end of the second black matrix 031b close to the light-emitting unit 02, but it is not limited thereto. Figure 8 and Fig. 9 The color resist unit 032 and the black matrix 031 are only shown as being arranged in the same layer. Of course, the color resist unit 032 and the black matrix 031 can also be arranged in different layers, which is not specifically limited here. By arranging the color resist unit 032 on the side of the encapsulation layer 06 away from the light-emitting unit 02, the polarizer can be replaced to improve the light-emitting efficiency of the display panel 100.

[0051] It is understandable that in Fig. 9The dotted line structure in the figure only illustrates the structure and position of the second black matrix 031b when M=N. The second angle is δ3. On this basis, the second black matrix 031b is padded by the color resist unit 032, that is, the distance N between the side of the second black matrix 031b away from the base substrate 01 and the light-emitting unit 02 is increased. At this time, the angle of the second angle is δ4, δ4<δ3, so that a part of the wide-viewing angle light cannot be emitted through the side of the light-emitting unit 02 close to the second black matrix 031b, thereby increasing the brightness loss along the second direction Y, thereby reducing the difference in brightness loss of the light-emitting unit 02 in the second direction Y and the third direction Z, and effectively improving the display effect.

[0052] In some optional embodiments, referring to Figure 2 , Figure 5 , Figure 3 , Figure 6 , Figure 8 and Fig. 9 , along the first direction X, the thickness of the first black matrix 031a is equal to the thickness of the second black matrix 031b.

[0053] It is understandable that in Figure 2 and Figure 5 In the first direction X, the thickness of the first black matrix 031a and the second black matrix 031b are equal; Figure 3 and Figure 6 In the first direction X, the thickness of the first black matrix 031a and the second black matrix 031b are equal; Figure 8 and Fig. 9 In the embodiment, the thickness of the first black matrix 031a and the second black matrix 031b are equal along the first direction X. By setting the thickness of the first black matrix 031a and the second black matrix 031b equal along the first direction X, the first black matrix 031a and the second black matrix 031b can be formed simultaneously in the same manufacturing process, which simplifies the process and facilitates manufacturing.

[0054] In some optional embodiments, continue to refer to Figure 1 The light-emitting unit 02 includes a first light-emitting unit 02a, a second light-emitting unit 02b and a third light-emitting unit 02c. The first light-emitting unit 02a and the second light-emitting unit 02b are alternately arranged along the second direction Y to form a first light-emitting unit column 09. The third light-emitting unit 02c is sequentially arranged along the second direction Y to form a second light-emitting unit column 10. The first light-emitting unit column 09 and the second light-emitting unit column 10 are alternately arranged along the third direction Z. The third light-emitting unit 02c corresponds to the first light-emitting unit 02a and the second light-emitting unit 02b one by one.

[0055] Understandably, Figure 1The diagram only illustrates that the projection of the light emitting unit 02 on the base substrate 01 is a rectangle, but it is not limited to this. Since the third light emitting unit 02c corresponds to the first light emitting unit 02a and the second light emitting unit 02b one by one, the area of ​​the third light emitting unit 02c can be set to be larger than the area of ​​the first light emitting unit 02a and the second light emitting unit 02b. The specific arrangement of the first light emitting unit 02a, the second light emitting unit 02b and the third light emitting unit 02c is not specifically limited in this embodiment. Figure 1 It is only shown that the widths of the first light-emitting unit 02a, the second light-emitting unit 02b and the third light-emitting unit 02c along the third direction Z are equal, and the length of the third light-emitting unit 02c along the second direction Y is equal to the maximum distance between the first light-emitting unit 02a and the second light-emitting unit 02b along the second direction Y, which can reduce the black matrix 031 and improve the transmittance of the display panel 100.

[0056] In some optional embodiments, continue to refer to Figure 1 , the light-emitting color of the first light-emitting unit 02a is red, the light-emitting color of the second light-emitting unit 02b is green, and the light-emitting color of the third light-emitting unit 02c is blue; or the light-emitting color of the first light-emitting unit 02a is green, the light-emitting color of the second light-emitting unit 02b is red, and the light-emitting color of the third light-emitting unit 02c is blue; the first black matrix 031a and the second black matrix 031b surround the third light-emitting unit 02c.

[0057] It is understandable that in Figure 1 It is only shown that the area of ​​the third light-emitting unit 02c is larger than the first light-emitting unit 02a and the second light-emitting unit 02b. Since the luminous efficiency of the blue light-emitting unit is lower than that of the red light-emitting unit and the green light-emitting unit, the third light-emitting unit 02c is set as a blue light-emitting unit, that is, the area of ​​the blue light-emitting unit is larger than the area of ​​the red light-emitting unit and the area of ​​the green light-emitting unit 02, so that the luminous brightness of each light-emitting unit 02 can be balanced.

[0058] In some optional embodiments, referring to Figure 1 and Fig.10 , Fig.10 yes Figure 1 A cross-sectional view taken along the C-C' direction, the light-emitting unit 02 comprises an anode layer 021, a light-emitting layer 022 and a cathode layer 023 stacked in sequence along a first direction X, the anode layer 021 is located on a side of the cathode layer 023 close to the base substrate 01; along the first direction X, the maximum distance from the anode layer 021 of the first light-emitting unit 02a to the base substrate 01 is E, the maximum distance from the anode layer 021 of the second light-emitting unit 02b to the base substrate 01 is F, and the maximum distance from the anode layer 021 of the third light-emitting unit 02c to the base substrate 01 is G, E=F <G。

[0059] It can be understood that the black matrix 031 is a light-absorbing structure, which will cause the luminance attenuation of the light-emitting unit 02 to intensify as the viewing angle increases, and the different aspect ratios of the light-emitting unit 02 will also result in different degrees of intensification of the luminance attenuation of the light-emitting unit 02 by the black matrix 031. In Figure 1 only the length of the third light-emitting unit 02c in the second direction Y is shown to be much greater than the lengths of the first light-emitting unit 02a and the second light-emitting unit 02b in the second direction Y. Therefore, the luminance attenuation of the third light-emitting unit 02c in the second direction Y is greater than that of the first light-emitting unit 02a and the second light-emitting unit 02b in the second direction Y. Setting E = F < G can reduce the luminance attenuation of the third light-emitting unit 02c in the second direction Y.

[0060] In some alternative embodiments, continue to refer to Figure 1 and Fig.10 , take a cross-section along the direction perpendicular to the display panel 100, the third direction Z is perpendicular to the cross-section, and the anode layer 021 of the third light-emitting unit 02c is in a shape of a capital "J" or a triangle in the cross-section.

[0061] It can be understood that Fig.10 only shows that the anode layer 021 of the third light-emitting unit 02c is triangular in the cross-section, that is, the side of the anode layer 021 away from the substrate 01 includes two connected inclined planes. When the light-emitting layer 022 and the cathode layer 023 are fabricated by the same process, both the light-emitting layer 022 and the cathode layer 023 have two connected inclined planes on the side away from the substrate 01. This structure can achieve that as the viewing angle in the second direction Y increases, the luminance of the third light-emitting unit 02c first increases and then decreases, thereby alleviating the luminance attenuation of the third light-emitting unit 02c along the second direction Y, and there is no need to change the size of the third light-emitting unit 02c, and the color shift is improved. The anode layer 021 of the third light-emitting unit 02c can also be in a shape of a capital "J" or an isosceles trapezoid, etc. in the cross-section, but it is not limited thereto. Any shape of the anode layer 021 that can improve the color shift is within the protection scope of this embodiment.

[0062] In some alternative embodiments, please refer to Fig.11 , Fig.11 is a schematic plan view of a display device provided by an embodiment of the present invention. The display device 200 provided in this embodiment includes the display panel 100 provided by the above embodiment of the present invention. Fig.11The embodiment only takes a mobile phone as an example to illustrate the display device 200. It can be understood that the display device 200 provided by the embodiments of the present invention can be other display devices 200 with a display function, such as a computer, a television, a vehicle-mounted display device, etc. The present invention does not make specific limitations thereto. The display device 200 provided by the embodiments of the present invention has the beneficial effects of the display panel 100 provided by the embodiments of the present invention. For specific descriptions of the display panel 100, reference can be made to the above embodiments, and details are not repeated herein.

[0063] As can be seen from the above embodiments, the display panel and the display device provided by the present invention achieve at least the following beneficial effects:

[0064] A substrate; a plurality of light-emitting units located on one side of the substrate; a color filter layer located on the side of the light-emitting unit away from the substrate. The color filter layer includes a black matrix. Along a first direction (the first direction is perpendicular to the substrate), the black matrix surrounds the opening area of the light-emitting unit. The size of the opening area can define the angle of light emission. The larger the size of the opening area, the more light can be emitted. Conversely, the smaller the size of the opening area, the less light can be emitted. The black matrix includes a first black matrix and a second black matrix. The first black matrix extends along a second direction, and the second direction intersects the first direction. The second black matrix extends along a third direction, and the third direction intersects the first direction and the second direction respectively. The first black matrix and the second black matrix are adjacent and connected. Along the second direction, the length of the first black matrix is P, and along the third direction, the length of the second black matrix is Q, where P>Q. The length of the light-emitting unit along the second direction is greater than the width of the light-emitting unit along the third direction, that is, the brightness loss of the light-emitting unit along the third direction is greater than the brightness loss of the light-emitting unit along the second direction. Along the first direction, the maximum distance from the first black matrix to the light-emitting unit is M, and the maximum distance from the second black matrix to the light-emitting unit is N, where M<N. This enables more large-angle light to be emitted from the side of the light-emitting unit close to the first black matrix, or enables some large-angle light not to be emitted from the side of the light-emitting unit close to the second black matrix, thereby reducing the difference in brightness loss of the light-emitting unit in the second direction and the third direction and effectively improving the display effect.

[0065] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of light emitting units are located on one side of the base substrate; A color filter layer is located on a side of the light-emitting unit away from the substrate, the color filter layer includes a black matrix, along a first direction, the black matrix surrounds the opening area of ​​the light-emitting unit, the first direction is a direction perpendicular to the substrate; the black matrix includes a first black matrix and a second black matrix, the first black matrix extends along a second direction, and the second direction intersects with the first direction; the second black matrix extends along a third direction, and the third direction intersects with the first direction and the second direction respectively; the first black matrix is ​​adjacent to and connected to the second black matrix, along the second direction, the length of the first black matrix is ​​P, along the third direction, the length of the second black matrix is ​​Q, P>Q; along the first direction, the maximum distance from the first black matrix to the light-emitting unit is M, the maximum distance from the second black matrix to the light-emitting unit is N, M <N。 2. The display panel according to claim 1, characterized in that: It also includes an encapsulation layer, which is located between the light-emitting unit and the color filter layer.

3. The display panel according to claim 2, characterized in that: A protrusion is provided on one side of the encapsulation layer close to the color filter layer, and along the first direction, the protrusion at least partially overlaps with the second black matrix.

4. The display panel according to claim 2, characterized in that: A groove is provided on one side of the encapsulation layer close to the color filter layer, and at least a part of the first black matrix is ​​located in the groove.

5. The display panel according to claim 4, characterized in that: The width of the first black matrix along the third direction is positively correlated with the difference between M and N.

6. The display panel according to claim 1, characterized in that: The color filter layer further includes a plurality of color resist units, the color resist units are arranged in one-to-one correspondence with the light-emitting units, and along the first direction, the color resist units at least partially overlap with the black matrix; The first black matrix is ​​located at a side of the color-resistance unit close to the base substrate, and the second black matrix is ​​located at a side of the color-resistance unit far from the base substrate.

7. The display panel according to claim 3, 4 or 6, characterized in that: Along the first direction, the thickness of the first black matrix is ​​equal to the thickness of the second black matrix.

8. The display panel according to claim 1, characterized in that: The light-emitting unit includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first light-emitting unit and the second light-emitting unit are alternately arranged along the second direction to form a first light-emitting unit column, the third light-emitting unit is sequentially arranged along the second direction to form a second light-emitting unit column, the first light-emitting unit column and the second light-emitting unit column are alternately arranged along the third direction, and the third light-emitting unit corresponds to the first light-emitting unit and the second light-emitting unit one by one.

9. The display panel according to claim 8, characterized in that: The light emitting color of the first light emitting unit is red, the light emitting color of the second light emitting unit is green, and the light emitting color of the third light emitting unit is blue; Or the light emitting color of the first light emitting unit is green, the light emitting color of the second light emitting unit is red, and the light emitting color of the third light emitting unit is blue; The first black matrix and the second black matrix surround the third light emitting unit.

10. The display panel according to claim 9, characterized in that: The light-emitting unit comprises an anode layer, a light-emitting layer and a cathode layer sequentially stacked along the first direction, wherein the anode layer is located on a side of the cathode layer close to the substrate; Along the first direction, the maximum distance from the anode layer of the first light-emitting unit to the substrate is E, the maximum distance from the anode layer of the second light-emitting unit to the substrate is F, and the maximum distance from the anode layer of the third light-emitting unit to the substrate is G, E=F <G。 11. The display panel according to claim 10, characterized in that: A cross section is taken along a direction perpendicular to the display panel, the third direction is perpendicular to the cross section, and the anode layer of the third light emitting unit is in the shape of an X or a triangle in the cross section.

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

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