Display panel and display device

Abstract

The invention provides a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving substrate, a first electrode and a second electrode, the pixel units are located on the driving substrate and arranged in an array mode, each pixel unit comprises a plurality of sub-pixels of different colors, and each sub-pixel comprises a pixel defining layer, a light-emitting unit, a black matrix and a color resistance unit in the direction away from the driving substrate; in the plurality of pixel units, the opening sizes of the sub-pixels with the same color in at least two pixel units are not completely the same, and the opening sizes comprise at least one of the following items: the opening size of the pixel defining layer, the size of the color resistance unit and the opening size of the black matrix. The display effect of the display panel can be improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices have been listed as the next generation display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency and flexible display.

[0003] With the continuous development of display technology, the low power consumption requirements of display screens are also increasing. The use of COE (CF onEL, forming a color film layer on a thin film encapsulated organic electroluminescent device) can achieve the low power consumption requirements of display screens. However, the current OLED using COE is prone to light diffraction, which causes color deviation, uneven brightness or moiré fringes in OLED display products, affecting the display effect of OLED display products. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a display panel and a display device, which can improve the display effect of the display panel.

[0005] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0006] In one aspect, a display panel is provided, comprising:

[0007] Driver substrate;

[0008] A plurality of pixel units arranged in an array on the driving substrate, each of the pixel units comprising a plurality of sub-pixels of different colors, and in a direction away from the driving substrate, the sub-pixels comprising a pixel defining layer, a light-emitting unit, a black matrix and a color resistance unit;

[0009] Among the multiple pixel units, the opening sizes of sub-pixels of the same color in at least two pixel units are not completely the same, and the opening size includes at least one of the following: the opening size of the pixel defining layer, the size of the color resist unit, and the opening size of the black matrix.

[0010] In some embodiments, the opening sizes of the sub-pixels in each pixel unit and the sub-pixels of the same color in adjacent pixel units are not completely the same.

[0011] In some embodiments, the opening sizes of the sub-pixels in each of the pixel units are different from the opening sizes of the sub-pixels of the same color in the adjacent pixel units.

[0012] In some embodiments, the display panel includes a plurality of pixel repeating units, each of the pixel repeating units includes a plurality of the pixel units, and in each of the pixel repeating units, the opening sizes of sub-pixels in each pixel unit and sub-pixels of the same color in other pixel units are different.

[0013] In some embodiments, the pixel repetition unit includes 4-16 pixel units.

[0014] In some embodiments, the sub-pixel is circular, and the opening size includes at least one of the following:

[0015] The first opening size is the diameter of the color-resistance unit corresponding to the sub-pixel;

[0016] The second opening size is the diameter of the black matrix opening corresponding to the sub-pixel;

[0017] The third opening size is the diameter of the opening of the pixel defining layer corresponding to the sub-pixel.

[0018] In some embodiments, in each of the sub-pixels,

[0019] The first opening size is larger than the second opening size, and the second opening size is larger than the third opening size.

[0020] In some embodiments, the difference in opening size between a sub-pixel in each pixel unit and a sub-pixel of the same color in an adjacent pixel unit is 0-6 microns.

[0021] In some embodiments, the pixel unit includes a red sub-pixel, a blue sub-pixel and a green sub-pixel; or

[0022] The pixel unit includes a white sub-pixel, a red sub-pixel, a blue sub-pixel and a green sub-pixel.

[0023] An embodiment of the present invention further provides a display device, comprising the display panel as described above.

[0024] The embodiments of the present invention have the following beneficial effects:

[0025] In the above scheme, among multiple pixel units, the opening sizes of sub-pixels of the same color in at least two pixel units are not exactly the same, so that the diffraction lights formed by openings of different sizes can interfere and influence each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color cast, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A schematic diagram of light diffraction phenomenon occurring in a display panel in the related art;

[0027] Figure 2 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention;

[0028] Figure 3 is a cross-sectional schematic diagram of a display panel according to another embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a pixel repeating unit in an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of a pixel unit in an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of light diffraction phenomenon occurring on a display panel according to an embodiment of the present invention.

[0032] Reference numerals

[0033] 10. Driver board

[0034] 11 Pixel Defining Layers

[0035] 12 Encapsulation layer

[0036] 13 Black Matrix

[0037] 14 blue color resistance unit

[0038] 15 Green color resistance unit

[0039] 16 Red color resistance units

[0040] 17 Flat layer DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0042] In the related art, an OLED display panel using COE technology includes a color resist unit and a black matrix arranged on the light-emitting side of the display panel. Since the pixel array or the color resist unit of the OLED display panel usually has the characteristic of periodic arrangement, this periodicity will cause light diffraction phenomenon, such as Figure 1 As shown, diffraction causes color cast, uneven brightness or moiré fringes on the display panel, affecting the display effect of the OLED display panel.

[0043] Embodiments of the present invention provide a display panel and a display device, which can improve the display effect of the display panel.

[0044] An embodiment of the present invention provides a display panel, comprising:

[0045] Driver substrate;

[0046] A plurality of pixel units arranged in an array on the driving substrate, each of the pixel units comprising a plurality of sub-pixels of different colors, and in a direction away from the driving substrate, the sub-pixels comprising a pixel defining layer, a light-emitting unit, a black matrix and a color resistance unit;

[0047] Among the multiple pixel units, the opening sizes of sub-pixels of the same color in at least two pixel units are not completely the same, and the opening size includes at least one of the following: the opening size of the pixel defining layer, the size of the color resist unit, and the opening size of the black matrix.

[0048] In the present embodiment, among the multiple pixel units, the opening sizes of the sub-pixels of the same color in at least two pixel units are not exactly the same, so that the diffraction lights formed by the openings of different sizes can interfere with and influence each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color cast, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel.

[0049] In this embodiment, the pixel unit may include a red sub-pixel, a blue sub-pixel and a green sub-pixel; or, the pixel unit may include a white sub-pixel, a red sub-pixel, a blue sub-pixel and a green sub-pixel.

[0050] In some embodiments, each pixel unit may include one red sub-pixel, one blue sub-pixel and one green sub-pixel; or, each pixel unit may include one red sub-pixel, one blue sub-pixel and two green sub-pixels; or, each pixel unit may include one white sub-pixel, one red sub-pixel, one blue sub-pixel and one green sub-pixel.

[0051] In some embodiments, the opening size of the sub-pixel in each pixel unit is not completely the same as the opening size of the sub-pixel of the same color in the adjacent pixel unit. Taking each pixel unit including a red sub-pixel, a blue sub-pixel and a green sub-pixel as an example, the opening size of the red sub-pixel in pixel unit A is not completely the same as the opening size of the red sub-pixel in the adjacent pixel unit B, and / or the opening size of the green sub-pixel in pixel unit A is not completely the same as the opening size of the green sub-pixel in the adjacent pixel unit B, and / or the opening size of the blue sub-pixel in pixel unit A is not completely the same as the opening size of the blue sub-pixel in the adjacent pixel unit B. Wherein, the opening size is not completely the same can be any one of the opening size of the pixel defining layer, the size of the color resist unit and the opening size of the black matrix is ​​different, or any multiple sizes of the opening size of the pixel defining layer, the size of the color resist unit and the opening size of the black matrix are different. For example, the opening size of the pixel defining layer of the red sub-pixel in pixel unit A is different from that of the red sub-pixel in the adjacent pixel unit B, the opening size of the black matrix of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is the same, and the size of the color resist unit of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is the same; or, the opening size of the pixel defining layer of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is different, the opening size of the black matrix of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is different, and the size of the color resist unit of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is the same; or, the opening size of the pixel defining layer of the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit B is the same, and the red sub-pixel in pixel unit A and that of the red sub-pixel in the adjacent pixel unit The black matrix of the red sub-pixel in pixel unit B has different opening sizes, and the color resistance unit of the red sub-pixel in pixel unit A and the adjacent red sub-pixel in pixel unit B has different sizes; or, the pixel definition layer of the green sub-pixel in pixel unit A and the adjacent green sub-pixel in pixel unit B has different opening sizes, the black matrix of the green sub-pixel in pixel unit A and the adjacent green sub-pixel in pixel unit B has different opening sizes, and the color resistance unit of the green sub-pixel in pixel unit A and the adjacent green sub-pixel in pixel unit B has the same size; or, the pixel definition layer of the blue sub-pixel in pixel unit A and the adjacent blue sub-pixel in pixel unit B has different opening sizes, the black matrix of the blue sub-pixel in pixel unit A and the adjacent blue sub-pixel in pixel unit B has the same opening size, and the color resistance unit of the blue sub-pixel in pixel unit A and the adjacent blue sub-pixel in pixel unit B has the same size. In this way, the diffracted light formed by openings of different sizes can interfere and affect each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color deviation, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel.

[0052] In some embodiments, the opening sizes of the sub-pixels in each of the pixel units are different from the sub-pixels of the same color in the adjacent pixel units. For example, each pixel unit includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel. The opening sizes of the red sub-pixels in pixel unit A and the red sub-pixels in the adjacent pixel unit B are different, and the opening sizes of the green sub-pixels in pixel unit A and the green sub-pixels in the adjacent pixel unit B are different, and the opening sizes of the blue sub-pixels in pixel unit A and the blue sub-pixels in the adjacent pixel unit B are different. The different opening sizes refer to that the opening sizes of the pixel definition layers of the sub-pixels, the size of the color resist units, and the opening sizes of the black matrix are different. For example, the opening size of the pixel defining layer of the red sub-pixel in pixel unit A and the red sub-pixel in the adjacent pixel unit B is different, the opening size of the black matrix of the red sub-pixel in pixel unit A and the red sub-pixel in the adjacent pixel unit B is different, and the size of the color resist unit of the red sub-pixel in pixel unit A and the red sub-pixel in the adjacent pixel unit B is different; the opening size of the pixel defining layer of the blue sub-pixel in pixel unit A and the blue sub-pixel in the adjacent pixel unit B is different, the opening size of the black matrix of the blue sub-pixel in pixel unit A and the blue sub-pixel in the adjacent pixel unit B is different, and the size of the color resist unit of the blue sub-pixel in pixel unit A and the blue sub-pixel in the adjacent pixel unit B is different; the opening size of the pixel defining layer of the green sub-pixel in pixel unit A and the green sub-pixel in the adjacent pixel unit B is different, the opening size of the black matrix of the green sub-pixel in pixel unit A and the green sub-pixel in the adjacent pixel unit B is different, and the size of the color resist unit of the green sub-pixel in pixel unit A and the green sub-pixel in the adjacent pixel unit B is different. In this way, the diffracted light formed by openings of different sizes can interfere with and influence each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color cast, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel.

[0053] like Figure 2 and Figure 3 As shown, the display panel includes a driving substrate 10, a pixel defining layer 11, an encapsulation layer 12, a black matrix 13, a color resist unit and a flat layer 17 which are arranged in sequence, wherein the driving substrate 10 includes a driving circuit layer and a light-emitting element arranged on a base substrate, the driving circuit layer includes film layers such as a gate metal layer, a gate insulating layer, an active layer, a source-drain metal layer, and an interlayer insulating layer, and the color resist unit may include a red color resist unit 16, a blue color resist unit 14 and a green color resist unit 15.

[0054] exist Figure 2 In the structure shown in FIG. 1 , the pixel defining layer 11, the black matrix 13 and the color resist unit have a relatively large influence on light diffraction. Figure 2In the display panel of the structure shown, the opening size of the sub-pixel in each pixel unit is different from the sub-pixel of the same color in the adjacent pixel unit, that is, the opening size of the black matrix of the sub-pixel in each pixel unit and the sub-pixel of the same color in the adjacent pixel unit is different, the size of the color resist unit is different, and the opening size of the pixel defining layer is different.

[0055] exist Figure 3 In the structure shown in FIG. 1 , the pixel defining layer 11 and the color resist unit have a relatively large influence on light diffraction. Therefore, the pixel defining layer 11 and the color resist unit 10 have a relatively large influence on light diffraction. Figure 3 In the display panel of the structure shown, the size of the color resist unit of the sub-pixel in each pixel unit and the sub-pixel of the same color in the adjacent pixel unit can be different, and the opening size of the pixel defining layer can be different, and the opening size of the black matrix of the sub-pixel in each pixel unit and the sub-pixel of the same color in the adjacent pixel unit can be the same.

[0056] In this embodiment, the display panel may include a plurality of pixel repeating units arranged in an array, each of the pixel repeating units includes a plurality of the pixel units, for example, may include 4-16 pixel units. In a specific embodiment, Figure 4 As shown, the pixel repeating unit may include four pixel units: pixel unit P1, pixel unit P2, pixel unit P3 and pixel unit P4.

[0057] In some embodiments, in each of the pixel repetition units, the opening sizes of the sub-pixels in each pixel unit and the sub-pixels of the same color in other pixel units are different. This allows the diffracted light formed by openings of different sizes to interfere with and influence each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color cast, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel.

[0058] In this embodiment, the shape of the sub-pixel can be a rectangle, a circle, a hexagon, etc. In some embodiments, such as Figure 4 and Figure 5 As shown, the sub-pixel may be circular. When the sub-pixel is circular, the opening size of the sub-pixel is related to the diameter of the black matrix opening, the color resist unit, and the pixel definition layer opening; when the sub-pixel is rectangular, the opening size of the sub-pixel is related to the side length of the black matrix opening, the color resist unit, and the pixel definition layer opening; when the sub-pixel is hexagonal, the opening size of the sub-pixel is related to the distance between two opposite sides of the black matrix opening, the color resist unit, and the pixel definition layer opening.

[0059] In a specific example, Figure 4 and Figure 5As shown, each pixel repeating unit includes 4 pixel units, each pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the sub-pixels are all circular. For each sub-pixel, the following opening sizes are included: the first opening size is the diameter of the color resistance unit corresponding to the sub-pixel; the second opening size is the diameter of the black matrix opening corresponding to the sub-pixel; the third opening size is the diameter of the pixel definition layer opening corresponding to the sub-pixel. In each of the sub-pixels, in order to ensure light extraction efficiency, the first opening size is larger than the second opening size, and the second opening size is larger than the third opening size.

[0060] In a specific embodiment, Figure 5 As shown, in the pixel unit P1, the first opening size of the red sub-pixel is R1, the second opening size is R2, and the third opening size is R3. The first opening size of the green sub-pixel is G1, the second opening size is G2, and the third opening size is G3. The first opening size of the blue sub-pixel is B1, the second opening size is B2, and the third opening size is B3.

[0061] In the pixel unit P2, the first opening size of the red sub-pixel is R1-1 micron, the second opening size is R2-2 micron, and the third opening size is R3-3 micron. The first opening size of the green sub-pixel is G1-1 micron, the second opening size is G2-2 micron, and the third opening size is G3-3 micron. The first opening size of the blue sub-pixel is B1-1 micron, the second opening size is B2-2 micron, and the third opening size is B3-3 micron.

[0062] In the pixel unit P3, the first opening size of the red sub-pixel is R1+1 micron, the second opening size is R2+2 micron, and the third opening size is R3+3 micron. The first opening size of the green sub-pixel is G1+1 micron, the second opening size is G2+2 micron, and the third opening size is G3+3 micron. The first opening size of the blue sub-pixel is B1+1 micron, the second opening size is B2+2 micron, and the third opening size is B3+3 micron.

[0063] In pixel unit P4, the first opening size of the red sub-pixel is R1+0.5 microns, the second opening size is R2+1.5 microns, and the third opening size is R3+2.5 microns. The first opening size of the green sub-pixel is G1+0.5 microns, the second opening size is G2+1.5 microns, and the third opening size is G3+2.5 microns. The first opening size of the blue sub-pixel is B1+0.5 microns, the second opening size is B2+1.5 microns, and the third opening size is B3+2.5 microns.

[0064] In this embodiment, in each of the pixel repeating units, the opening sizes of the sub-pixels in each pixel unit and the sub-pixels of the same color in other pixel units are different, so that the diffracted lights formed by openings of different sizes can interfere with and affect each other, thereby improving the color separation phenomenon of the display panel diffraction, avoiding color cast, uneven brightness or moiré fringes on the display panel, and ensuring the display effect of the display panel. Figure 6 The diffraction effect diagram of the display panel of this embodiment is shown. It can be seen that compared with Figure 1 , which can greatly improve the diffraction effect of the display panel.

[0065] In order to better improve the diffraction effect, each pixel repeating unit may include more pixel units, for example, 8 pixel units, and the opening sizes of the sub-pixels in each of the 8 pixel units are different from the sub-pixels of the same color in other pixel units; or, each pixel repeating unit may include 16 pixel units, and the opening sizes of the sub-pixels in each of the 16 pixel units are different from the sub-pixels of the same color in other pixel units.

[0066] The opening size of the sub-pixel is related to the life of the display panel. If the difference in the opening size of the sub-pixel is too large, it will affect the life of the display panel. In order to ensure the life of the display panel, the difference in the opening size between the sub-pixel in each pixel unit and the sub-pixel of the same color in the adjacent pixel unit does not exceed 6 microns, that is, the difference in the opening size between the sub-pixel in each pixel unit and the sub-pixel of the same color in the adjacent pixel unit is 0-6 microns.

[0067] An embodiment of the present invention further provides a display device, comprising the display panel as described above.

[0068] The display device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will appreciate that the structure of the above-mentioned display device does not constitute a limitation on the display device, and the display device may include more or less of the above-mentioned components, or a combination of certain components, or different component arrangements. In an embodiment of the present invention, the display device includes but is not limited to a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.

[0069] The display device may be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

[0070] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiments.

[0071] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0072] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0073] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0074] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: Driver substrate; A plurality of pixel units arranged in an array on the driving substrate, each of the pixel units comprising a plurality of sub-pixels of different colors, and in a direction away from the driving substrate, the sub-pixels comprising a pixel defining layer, a light-emitting unit, a black matrix and a color resistance unit; Among the multiple pixel units, the opening sizes of sub-pixels of the same color in at least two pixel units are not completely the same, and the opening size includes at least one of the following: the opening size of the pixel defining layer, the size of the color resist unit, and the opening size of the black matrix.

2. The display panel according to claim 1, characterized in that: The opening sizes of the sub-pixels in each pixel unit and the sub-pixels of the same color in the adjacent pixel units are not completely the same.

3. The display panel according to claim 1, characterized in that: The opening sizes of the sub-pixels in each pixel unit and the sub-pixels of the same color in the adjacent pixel units are different.

4. The display panel according to claim 1, characterized in that: The display panel includes a plurality of pixel repeating units, each of which includes a plurality of pixel units. In each of the pixel repeating units, the opening sizes of sub-pixels in each pixel unit and sub-pixels of the same color in other pixel units are different.

5. The display panel according to claim 4, characterized in that: The pixel repeating unit includes 4-16 pixel units.

6. The display panel according to any one of claims 1 to 5, characterized in that: The sub-pixel is circular, and the opening size includes at least one of the following: The first opening size is the diameter of the color-resistance unit corresponding to the sub-pixel; The second opening size is the diameter of the black matrix opening corresponding to the sub-pixel; The third opening size is the diameter of the opening of the pixel defining layer corresponding to the sub-pixel.

7. The display panel according to claim 6, characterized in that: In each of the sub-pixels, The first opening size is larger than the second opening size, and the second opening size is larger than the third opening size.

8. The display panel according to any one of claims 1 to 5, characterized in that: The difference in opening size between a sub-pixel in each pixel unit and a sub-pixel of the same color in an adjacent pixel unit is 0-6 microns.

9. The display panel according to claim 1, characterized in that: The pixel unit includes a red sub-pixel, a blue sub-pixel and a green sub-pixel; or The pixel unit includes a white sub-pixel, a red sub-pixel, a blue sub-pixel and a green sub-pixel.

10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 9.

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