Display panel and display device

Abstract

The invention relates to a display panel and a display device.The display panel comprises a substrate, a pixel limiting layer and a plurality of sub-pixels, the pixel limiting layer is arranged on one side of the substrate in the thickness direction, and the pixel limiting layer comprises a plurality of pixel limiting parts and pixel openings defined by the pixel limiting parts; each sub-pixel is arranged in the corresponding pixel opening and comprises a first electrode, a second electrode and a light-emitting functional layer arranged between the first electrode and the second electrode; wherein in the thickness direction, the height size of part of the pixel limiting parts is larger than the height size of the other part of the pixel limiting parts. According to the display panel and the display device provided by the embodiment of the invention, the symmetry of display color cast between the sub-pixels can be improved, so that the color of a display picture is more uniform, and the visual experience of a user is 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] With the continuous development of display technology, the color deviation problem caused by the display panel emitting light has been continuously improved, meeting the user's higher viewing needs and improving the user's visual comfort.

[0003] For each light-emitting sub-pixel, since the array wiring below the anode opening has a certain height, the anode is uneven, the position of the anode protrusion is asymmetric, and the opening pattern of the sub-pixel cannot be completely symmetrical. Therefore, sub-pixels of different colors have different brightness attenuation at different angles. In addition, the obstruction of the pixel limiting part makes color deviation prone to occur at a wide viewing angle, resulting in poor symmetry of color deviation and color differences in different directions, which affects the user's visual experience. Summary of the invention

[0004] Embodiments of the present invention provide a display panel and a display device, which can improve the symmetry of display color deviation between sub-pixels, make the color of the displayed picture more uniform, and improve the visual experience of users.

[0005] On the one hand, according to an embodiment of the present invention, a display panel is proposed, including a substrate, a pixel defining layer and a plurality of sub-pixels, the pixel defining layer being arranged on one side in the thickness direction of the substrate, the pixel defining layer including a plurality of pixel defining portions and a pixel opening formed by the plurality of pixel defining portions; each sub-pixel is arranged in the pixel opening, the sub-pixel including a first electrode, a second electrode and a light-emitting functional layer arranged therebetween; wherein, along the thickness direction, the height dimension of some pixel defining portions is greater than the height dimension of other pixel defining portions.

[0006] According to one aspect of an embodiment of the present invention, the first electrode includes a main body portion and a raised portion, and along the thickness direction, the raised portion is arranged to protrude from the main body portion, and along the direction surrounding the sub-pixel, the height dimension of the pixel defining portion within the illumination range of light emitted from the corresponding area of ​​the raised portion of the sub-pixel is H1, and the height dimension of the pixel defining portion within the illumination range of light emitted from the corresponding area of ​​the main body portion of the sub-pixel is H2, wherein H1>H2.

[0007] According to one aspect of the embodiment of the present invention, along the thickness direction, the protrusion is protruded from the main body and has a height dimension of C1, wherein H1-H2>C1.

[0008] According to one aspect of an embodiment of the present invention, the angle between the light emitted at the position of the protrusion and the top surface of the pixel defining portion through which it passes is θ1, and the angle between the light emitted at the position of the main body and the top surface of the pixel defining portion through which it passes is θ2, wherein θ1=θ2.

[0009] According to one aspect of the embodiment of the present invention, the protrusion is located on one side of the pixel opening in the first direction, and the height of the pixel defining portion on the opposite side of the protrusion in the first direction is greater than the height of the pixel defining portion on the other side;

[0010] Preferably, the protrusion is located on one side of the pixel opening in the second direction, the height of the pixel defining portion on the opposite side of the protrusion in the second direction is greater than the height of the pixel defining portion on the other side, and the first direction intersects the second direction.

[0011] According to one aspect of an embodiment of the present invention, a plurality of sub-pixels include a first sub-pixel, a second sub-pixel and a third sub-pixel, the luminous brightness of the first sub-pixel is greater than the luminous brightness of the second sub-pixel and the third sub-pixel, and the height dimension of at least part of the pixel defining portion around the first sub-pixel is greater than the height dimension of the remaining pixel defining portions.

[0012] According to one aspect of an embodiment of the present invention, the thickness of the first sub-pixel is greater than the thickness of the second sub-pixel, the height dimension of at least a portion of the pixel defining portion enclosed to form the first sub-pixel is a1, and the height dimension of at least a portion of the pixel defining portion enclosed to form the second sub-pixel is a2, wherein a1>a2;

[0013] Preferably, the thickness of the second sub-pixel is greater than the thickness of the third sub-pixel, and the height dimension of at least a portion of the pixel defining portion enclosing the third sub-pixel is a3, wherein a2>a3.

[0014] According to one aspect of the embodiments of the present invention, the height dimensions of the pixel defining parts of the first sub-pixel on both sides of the first direction and the height dimensions of the pixel defining parts on both sides of the second direction are respectively greater than the height dimensions of the remaining pixel defining parts.

[0015] According to one aspect of the embodiments of the present invention, heights of pixel defining portions of the first sub-pixel on both sides of the first direction and the second direction are equal.

[0016] In another aspect, a display device is provided according to an embodiment of the present invention, comprising a display panel as described in any one of the above items.

[0017] The embodiments of the present invention provide a display panel and a display device, which can adjust the light emission of the sub-pixel at the position and the display effect of the sub-pixel at the corresponding position by setting the height dimensions of multiple pixel defining parts in the thickness direction in a pixel defining layer to be different, and further adjust the color deviation effect formed between the adjacent sub-pixels, thereby facilitating the formation of symmetrical color deviation between the adjacent sub-pixels, improving the uniformity of the displayed color, avoiding the different displayed colors caused by the asymmetric color deviation at different positions, and providing a more uniform display effect for the displayed picture, thereby improving the user's visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic plan view of a display panel according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 MM cross-section diagram in;

[0021] Figure 3 is a plan view schematically showing another display panel according to an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 NN profile in ;

[0023] Figure 5 yes Figure 3 Another NN profile in .

[0024] Reference numerals:

[0025] 100-display panel; 10-substrate; 20-pixel defining layer; 21-pixel defining portion; 22-pixel opening; 23-sub-pixel; 23a-first sub-pixel; 23b-second sub-pixel; 23c-third sub-pixel;

[0026] 1-first electrode; 2-second electrode; 3-light-emitting functional layer; 30-driving circuit layer;

[0027] 1a-main body; 1b-raised portion; X-first direction; Y-second direction.

[0028] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0030] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the display panel and display device of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] In order to better understand the present invention, Figures 1 to 5 The display panel and the display device according to the embodiments of the present invention are described in detail.

[0032] See also Figure 1 and Figure 2 According to an embodiment of the present invention, a display panel 100 is proposed, including a substrate 10, a pixel defining layer 20 and a plurality of sub-pixels 23. The pixel defining layer 20 is arranged on one side of the substrate 10 in the thickness direction. The pixel defining layer 20 includes a plurality of pixel defining portions 21 and a pixel opening 22 formed by the plurality of pixel defining portions 21. Each sub-pixel 23 is arranged in the pixel opening 22. The sub-pixel 23 includes a first electrode 1, a second electrode 2 and a light-emitting functional layer 3 arranged therebetween. In the thickness direction, the height dimension of some pixel defining portions 21 is greater than the height dimension of other pixel defining portions 21.

[0033] Optionally, according to the bendability of the display panel 100 , the substrate 10 may be set as a flexible substrate, such as an organic polymer material substrate such as polyimide (PI), or a rigid substrate such as transparent glass, etc., which is not limited in the present application.

[0034] Optionally, the pixel defining layer 20 has a plurality of spaced-apart pixel defining portions 21 , which may be made of an organic insulating material. Adjacent pixel defining portions 21 enclose a pixel opening 22 , which may be obtained by an etching process, and a plurality of sub-pixels 23 are disposed in corresponding pixel openings 22 .

[0035] Optionally, the sub-pixel 23 includes a first electrode 1, a second electrode 2 and a light-emitting functional layer 3 therebetween, the pixel defining portion 21 covers the edge of the first electrode 1 and the light-emitting functional layer 3 is located in the pixel opening 22, so that multiple pixel defining portions 21 enclose multiple pixel openings 22.

[0036] Optionally, the first electrode 1 is an anode, the second electrode 2 is a cathode, and the light-emitting functional layer 3 can use an organic light-emitting material to form different colors of light. The first electrode 1 injects transport holes into the middle light-emitting functional layer 3 and the second electrode 2 injects transport electrons into the light-emitting functional layer 3. After the holes and electrons combine to form excitons in the light-emitting functional layer 3, the organic light-emitting material emits light to obtain different colors of light.

[0037] In the above embodiment, a driving circuit layer 30 is provided on the substrate 10, and the driving circuit layer 30 includes a driving circuit. The driving circuit includes a driving device and a signal line, etc. The driving device includes a plurality of thin film transistors (TFTs), capacitors, etc., and the present application does not make any special limitation on this. The plurality of thin film transistors are respectively connected to the plurality of sub-pixels 23, thereby providing a driving signal for the light emission of the sub-pixels 23 to meet different light emission color requirements.

[0038] Specifically, the first electrode 1 of each sub-pixel 23 is arranged on the driving circuit layer 30, the light-emitting functional layer 3 is arranged on the side of the first electrode 1 away from the driving circuit layer 30, and the second electrode 2 is arranged on the side of the light-emitting functional layer 3 away from the first electrode 1. The first electrode 1 is specifically formed on the side of the driving circuit layer 30 away from the substrate 10, and is electrically connected to the driving circuit in the driving circuit layer 30.

[0039] It is understandable that the sub-pixels 23 may be arranged in an array in the display panel 100 , and the multiple sub-pixels 23 may be red sub-pixels, green sub-pixels and blue sub-pixels, which form a color display after emitting red, green and blue (RGB) three-color light mixed.

[0040] Taking into account that color shift will occur between adjacent colored lights after mixing, and if the color shift at different positions or angles is asymmetrical, it will cause one part of the display to be red and the other part to be bluish, which will have an adverse effect on the user's viewing experience. Therefore, in this embodiment, the color shift phenomenon is adjusted by adjusting the height size of the pixel limiting portion 21 at different positions.

[0041] Specifically, when the display at a certain position is red, the height of the pixel defining portion 21 around the corresponding sub-pixel 23 can be increased to block the red light to a certain extent, thereby reducing the red light output rate, which helps to alleviate the color cast phenomenon.

[0042] Alternatively, when the same sub-pixel 23 has different light emitting angles, the color deviation angles between the sub-pixel 23 and the adjacent sub-pixel 23 will be different, affecting the viewing effect of the user at different angles, making the colors viewed by the user at different positions different. Therefore, the height of the pixel limiting portion 21 around the corresponding sub-pixel 23 can be adjusted to make the light emitting angles at various positions of the sub-pixel 23 consistent, so that the angles of the positions where the color deviation occurs are also consistent, the viewing effect of the user at different positions is consistent, and the symmetry and uniformity of the color deviation are improved.

[0043] It should be noted that the specific height dimension value of the pixel defining portion 21 needs to be determined according to the actual color deviation adjustment requirements. The pixel defining portion 21 at the corresponding position and the required specific height dimension are adjusted according to the actual requirements to meet the symmetry and uniformity of the displayed color deviation.

[0044] An embodiment of the present invention provides a display panel 100, which sets different height dimensions of multiple pixel defining portions 21 in the pixel defining layer 20 in the thickness direction, and uses the pixel defining portions 21 with larger height dimensions to partially block the light emission of sub-pixels 23 in the enclosed pixel openings 22, thereby adjusting the light emission of the sub-pixels 23 at the position, adjusting the display effect of the sub-pixels 23 at the corresponding position, and further adjusting the color deviation effect formed between adjacent sub-pixels 23, so as to facilitate the formation of symmetrical color deviation between adjacent sub-pixels 23, improve the uniformity of displayed colors, avoid the different displayed colors caused by asymmetric color deviation at different positions, and display the picture with a more uniform display effect, thereby improving the user's visual experience.

[0045] As an alternative embodiment, see Figure 2 The first electrode 1 includes a main body portion 1a and a raised portion 1b. Along the thickness direction, the raised portion 1b is arranged to protrude from the main body portion 1a. Along the direction surrounding the sub-pixel 23, the height dimension of the pixel defining portion 21 within the irradiation range of the light emitted from the corresponding area of ​​the raised portion 1b of the sub-pixel 23 is H1, and the height dimension of the pixel defining portion 21 within the irradiation range of the light emitted from the corresponding area of ​​the main body portion 1a of the sub-pixel 23 is H2, wherein H1>H2.

[0046] In this embodiment, the first electrode 1 itself is not completely flat. For example, affected by the M3 metal in the bottom array layer, the first electrode 1 forms a main body 1a and a raised portion 1b after molding. The raised portion 1b is set to protrude a certain height compared to the main body 1a.

[0047] Due to the existence of the raised portion 1b, the height of the raised portion 1b is different from that of the main body portion 1a, so that the emission angle of the light generated at the raised portion 1b is different from the angle of the light at the main body portion 1a. In other words, the raised portion 1b has a higher light emission starting point than the main body portion 1a, which makes the angle between the light and the corresponding pixel defining portion 21 smaller, and ultimately leads to inconsistent light emission angles at different positions of the first electrode 1, and further makes the color deviation between the sub-pixel 23 and the adjacent sub-pixel 23 not at the same angle position, resulting in asymmetric color deviation.

[0048] Therefore, in this embodiment, the height dimension of the pixel defining portion 21 through which the light generated at the position of the protrusion 1b passes is increased, so that the angle between the light generated at the protrusion 1b and the pixel defining portion 21 is increased, and the pixel defining portion 21 limits the light at the position of the protrusion 1b, so that it gradually coincides with the angle of the light generated by the main body 1a, thereby improving the above-mentioned problem of asymmetric display color deviation. (In the figure, light A represents the outgoing light of the main body 1a, light B represents the outgoing light of the improved protrusion 1b, and light C represents the outgoing light of the protrusion 1b before the improvement)

[0049] It can be seen from this that in this embodiment, the height dimension of the pixel limiting portion 21 formed by the raised portion 1b within the range of light irradiation needs to be set to H1, and the height dimension of the pixel limiting portion 21 formed by the main body portion 1a within the range of light irradiation needs to be set to H2, so that a certain height difference is formed between the two, thereby improving the color asymmetry caused by the raised portion 1b.

[0050] The present application does not impose any special restrictions on the height of the pixel defining portion 21 at different positions and the difference between the above H1 and H2, which need to be determined according to actual light control requirements to meet the symmetric uniformity of the luminous color deviation of the sub-pixel 23.

[0051] An embodiment of the present invention provides a display panel 100, in which a height-differentiated design of the pixel defining portion 21 is achieved by making the height dimension of the pixel defining portion 21 within the illumination range of the light emitted from the protruding portion 1b of the first electrode 1 greater than the height dimension of the pixel defining portion 21 within the illumination range of the light emitted from the main body portion 1a. The pixel defining portion 21 is used to specifically adjust the angle of the light at the protruding portion 1b, thereby alleviating the reduction in the light emitting angle caused by the protruding portion 1b, improving the color deviation symmetry at different angles of the same sub-pixel 23, and improving the overall display effect.

[0052] As an optional embodiment, along the thickness direction, the protruding portion 1b is protruded from the main body portion 1a and has a protruding height dimension of C1, wherein H1-H2>C1.

[0053] When the raised portion 1b is protruding from the main body 1a and the height dimension of the protrusion is C1, it is also necessary to increase the height dimension of the corresponding pixel limiting portion 21 through which the light can pass, so that it can form a certain shielding for the light generated at the raised portion 1b, and appropriately increase the light emission angle, which can gradually approach the light emission angle of the main body 1a, and adjust the symmetry of the color deviation.

[0054] An embodiment of the present invention provides a display panel 100, which can more effectively block the light emitted by the protruding portion 1b by setting the height dimension value of the pixel limiting portion 21 to be greater than the protruding dimension of the protruding portion 1b, thereby fully improving the problem of asymmetric color deviation caused by the protruding portion 1b and having a better adjustment effect.

[0055] As an alternative embodiment, see Figure 2 The angle between the light emitted from the position of the protrusion 1b and the top surface of the pixel defining portion 21 is θ1, and the angle between the light emitted from the position of the main body 1a and the top surface of the pixel defining portion 21 is θ2, where θ1=θ2.

[0056] When the protrusion 1b of the first electrode 1 exists, due to the increase in the light emission starting point, the angle between the light at the protrusion 1b and the top surface of the pixel defining portion 21 is smaller than the angle between the light at the main body 1a and the top surface of the pixel defining portion 21.

[0057] When the height dimension of the pixel defining portion 21 through which the light at the raised portion 1b passes is increased to H1 in this embodiment, the angle between the light and the top surface of the corresponding pixel defining portion 21 will gradually increase to θ1, thereby maintaining the same level as the original light output angle θ2 of the main body 1a. As a result, the position angles of the color deviation produced by the light emitted by the raised portion 1b and the main body 1a are consistent, so that the color deviation around the sub-pixel 23 remains symmetrical, the color display is uniform, and the user has the same visual experience at different positions.

[0058] An embodiment of the present invention provides a display panel 100, which makes the light emission angles of the protrusion 1b and the main body 1a consistent by adjusting the height of the pixel limiting portion 21 at different positions. On the basis of adjusting the color deviation position, the symmetry of the color deviation position is further improved, thereby meeting the user's higher visual color uniformity requirements and further improving the user's visual experience.

[0059] As an alternative embodiment, see Figure 1 and Figure 2 The protrusion 1b is located on one side of the pixel opening 22 in the first direction X, and the height of the pixel defining portion 21 on the opposite side of the protrusion 1b in the first direction X is greater than the height of the pixel defining portion 21 on the other side.

[0060] For the same sub-pixel 23, when the protrusion 1b of the first electrode 1 is located on one side of the pixel opening 22 in the first direction X, the light emitted along the first direction X will pass through the pixel defining portion 21 on the opposite side of the protrusion 1b. Therefore, the height dimension of the pixel defining portion 21 at this position needs to be increased so that its height dimension is greater than the height dimension of the pixel defining portion 21 at other positions, thereby adjusting the light emission angle at the position of the protrusion 1b.

[0061] Optionally, the protrusion 1b can be simultaneously located on one side of the pixel opening 22 in the second direction Y, the height of the pixel defining portion 21 on the opposite side of the protrusion 1b in the second direction Y is greater than the height of the pixel defining portion 21 on the other side, the first direction X and the second direction Y intersect, wherein the first direction X can be the length direction, and the second direction Y can be the width direction.

[0062] When the protruding portion 1b of the first electrode 1 is simultaneously located on one side of the pixel opening 22 in the second direction Y, the light emitted along the second direction Y will pass through the pixel limiting portion 21 on the opposite side of the protruding portion 1b. Therefore, the height dimension of the pixel limiting portion 21 at this position needs to be increased so that its height dimension is greater than the height dimension of the pixel limiting portion 21 at the remaining positions, thereby adjusting the light emission angle at the position of the protruding portion 1b.

[0063] An embodiment of the present invention provides a display panel 100, which adjusts the height dimension of the pixel limiting portion 21 at the corresponding position according to the specific position of the protrusion 1b in the pixel opening 22 and the actual light emission direction, and more specifically completes the adjustment of the light emission angle at the position of the protrusion 1b, so that the angle adjustment of the color deviation is more accurate, and the reliability of the symmetrical adjustment of the color deviation is improved, providing a guarantee for the user's uniform visual experience.

[0064] As an alternative embodiment, see Figure 3 and Figure 4 , the multiple sub-pixels 23 include a first sub-pixel 23a, a second sub-pixel 23b and a third sub-pixel 23c, the luminous brightness of the first sub-pixel 23a is greater than the luminous brightness of the second sub-pixel 23b and the third sub-pixel 23c, and the height dimension of at least part of the pixel defining portion 21 around the first sub-pixel 23a is greater than the height dimension of the remaining pixel defining portions 21.

[0065] Optionally, the first sub-pixel 23a can be a red pixel, the second sub-pixel 23b can be a green pixel, and the third sub-pixel 23c can be a blue pixel. When the luminous brightness of the first sub-pixel 23a is greater than the luminous brightness of the second sub-pixel 23b and the third sub-pixel 23c, the screen display is red at this time. In order to improve the problem of color deviation, in this embodiment, the height dimension of the pixel defining portion 21 around the first sub-pixel 23a is increased so that its height dimension is greater than the height dimension of the pixel defining portion 21 around the second sub-pixel 23b and the third sub-pixel 23c.

[0066] Increasing the height of the pixel defining portion 21 around the first sub-pixel 23a can block the light output of the first sub-pixel 23a to a certain extent, thereby reducing the light output of the first sub-pixel 23a, achieving light output balance with the second sub-pixel 23b and the third sub-pixel 23c, and improving the color deviation problem.

[0067] Of course, when the luminous brightness of the second sub-pixel 23b or the third sub-pixel 23c is high, the screen display is bluish at this time. Similarly, the light output can be partially blocked by increasing the height of the pixel limiting portion 21 around it, thereby reducing the corresponding light output and restoring the overall normal display effect.

[0068] The present application does not impose any special limitation on the height difference between the pixel defining portion 21 around the first sub-pixel 23a and the remaining pixel defining portions 21. The height needs to be adjusted according to the actual degree of color deviation, so as to ultimately improve the symmetry of color deviation at different positions.

[0069] An embodiment of the present invention provides a display panel 100, which performs differentiated design on the height dimensions of the pixel defining portions 21 around different sub-pixels 23 according to the different luminous brightnesses thereof, thereby specifically overcoming the color deviation problem caused by different brightnesses, and utilizing the higher pixel defining portions 21 to block part of the emitted light, thereby improving the symmetry of the color deviation at different positions.

[0070] As an alternative embodiment, see Figure 3 and Figure 5 The thickness of the first sub-pixel 23a is greater than that of the second sub-pixel 23b, the height dimension of at least a portion of the pixel defining portion 21 enclosed to form the first sub-pixel 23a is a1, and the height dimension of at least a portion of the pixel defining portion 21 enclosed to form the second sub-pixel 23b is a2, wherein a1>a2.

[0071] When the thicknesses of different sub-pixels 23 are different, the light-emitting starting points of the sub-pixels 23 will also be different. If the thickness of the first sub-pixel 23a is greater than the thickness of the second sub-pixel 23b, the light-emitting starting point of the first sub-pixel 23a will be higher, making its light-emitting angle smaller. Therefore, in this embodiment, the light-emitting angle of the first sub-pixel 23a is increased by increasing the pixel limiting portion 21 around the first sub-pixel 23a, thereby forming a certain compensation for the light-emitting angle, making it consistent with the light-emitting angles of other sub-pixels 23, and improving the symmetry problem of color deviation.

[0072] Optionally, the thickness of the second sub-pixel 23b is greater than the thickness of the third sub-pixel 23c, and the height dimension of at least a portion of the pixel defining portion 21 enclosing the third sub-pixel 23c is a3, wherein a2>a3.

[0073] Similarly, when the thickness of any sub-pixel 23 is large, its light-emitting starting point will be increased, resulting in a decrease in the light output angle. At this time, the height dimension of the surrounding pixel limiting portion 21 needs to be increased accordingly to compensate for the above-mentioned angle, so that the color deviation at the same angle position around the sub-pixel 23 is the same, meeting the requirements of color deviation uniformity.

[0074] An embodiment of the present invention provides a display panel 100. In view of the different thicknesses of different sub-pixels 23, the height dimension of the pixel defining portion 21 around the corresponding sub-pixel 23 is adjusted to overcome the problem of different color deviation angles caused by the difference in thickness of the sub-pixels 23, adapt to the color deviation symmetry between sub-pixels 23 of different thicknesses, and meet more application conditions.

[0075] As an optional embodiment, the height dimensions of the pixel defining portions 21 of the first sub-pixel 23a on both sides of the first direction X and the height dimensions of the pixel defining portions 21 on both sides of the second direction Y are respectively greater than the height dimensions of the remaining pixel defining portions 21 .

[0076] Optionally, when the luminous brightness or overall thickness of the first sub-pixel 23a is greater than those of the second sub-pixel 23b and the third sub-pixel 23c, it is necessary to increase the height of the pixel defining portion 21 around the first sub-pixel 23a, so as to partially block the light generated by the first sub-pixel 23a, balance the color deviation problem with the adjacent sub-pixel 23, and improve the display effect.

[0077] In the present embodiment, the heights of the pixel defining portions 21 on both sides of the first sub-pixel 23a in the first direction X and the second direction Y are respectively increased so that their height dimensions are greater than the height dimensions of the remaining pixel defining portions 21, so that the height dimensions of the pixel defining portions 21 around the first sub-pixel 23a in all directions are increased, thereby blocking the light emitted from the first sub-pixel 23a in all directions and adjusting the color deviation problem in all directions.

[0078] Of course, the height of the pixel defining portion 21 in any direction can be adjusted in a targeted manner according to actual color deviation requirements, thereby adjusting the color deviation problem in that direction. The present application does not specifically limit the specific position of the adjusted pixel defining portion 21.

[0079] An embodiment of the present invention provides a display panel 100, which blocks the light output of the first sub-pixel 23a in all directions by adjusting the height of the pixel defining portion 21 of the first sub-pixel 23a in the first direction X and the second direction Y, thereby more fully adjusting the color deviation at multiple angles, meeting the color deviation display requirements at multiple angles, and fully improving the display effect.

[0080] As an optional embodiment, the heights of the pixel defining portions 21 of the first sub-pixel 23 a on both sides of the first direction X and the second direction Y are equal.

[0081] Taking into account that the height dimension of the pixel defining portion 21 will affect the light emitting angle of the sub-pixel 23, in order to ensure that the light emitting angles of the first sub-pixel 23a in all directions are consistent and meet the requirements of better color deviation symmetry, in this embodiment, the height dimensions of the pixel defining portion 21 in the first direction X and the second direction Y are set to be equal, so that the light emitting angles in all directions are consistent. Optionally, the present application does not impose any special limitation on the specific height dimension value.

[0082] An embodiment of the present invention provides a display panel 100, which sets the height dimensions of the pixel defining portion 21 around the first sub-pixel 23a to be equal, and adjusts the symmetry of the color deviation at each angle, so that the light emitted in each direction of the first sub-pixel 23a has better uniformity, thereby having a better display effect.

[0083] According to an embodiment of the present invention, a display device is provided, comprising a display panel 100 as described in any one of the above items. Optionally, the display device can be any product related to display, such as lighting, car lights, mobile phones, televisions, tablets, car displays, etc. This application does not specifically limit the specific type of the display device.

[0084] The embodiments of the present invention provide a display panel and a display device, which can adjust the light emission of the sub-pixel at the position and the display effect of the sub-pixel at the corresponding position by setting the height dimensions of multiple pixel defining parts in the thickness direction in a pixel defining layer to be different, and further adjust the color deviation effect formed between the adjacent sub-pixels, thereby facilitating the formation of symmetrical color deviation between the adjacent sub-pixels, improving the uniformity of the displayed color, avoiding the different displayed colors caused by the asymmetric color deviation at different positions, and providing a more uniform display effect for the displayed picture, thereby improving the user's visual experience.

[0085] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; A pixel defining layer, disposed on one side of the substrate in the thickness direction, the pixel defining layer comprising a plurality of pixel defining portions and a pixel opening formed by the pixel defining portions; A plurality of sub-pixels, each of which is disposed at the pixel opening, and each of which comprises a first electrode, a second electrode, and a light-emitting functional layer disposed therebetween; Wherein, along the thickness direction, the height dimension of some pixel defining parts is greater than the height dimension of another part of the pixel defining parts.

2. The display panel according to claim 1, characterized in that: The first electrode includes a main body portion and a protruding portion. Along the thickness direction, the protruding portion is arranged to protrude from the main body portion. Along the direction surrounding the sub-pixel, the height dimension of the pixel defining portion within the illumination range of light emitted from the corresponding area of ​​the protruding portion of the sub-pixel is H1, and the height dimension of the pixel defining portion within the illumination range of light emitted from the corresponding area of ​​the main body portion of the sub-pixel is H2, wherein H1>H2.

3. The display panel according to claim 2, characterized in that: Along the thickness direction, the protrusion is protruded from the main body and has a protruding height dimension of C1, wherein H1-H2>C1.

4. The display panel according to claim 2, characterized in that: The angle between the light emitted from the position of the protrusion and the top surface of the pixel defining portion is θ1, and the angle between the light emitted from the position of the main body and the top surface of the pixel defining portion is θ2, wherein θ1=θ2.

5. The display panel according to claim 2, characterized in that: The protrusion is located at one side of the pixel opening in the first direction, and the height of the pixel defining portion on one side of the protrusion opposite to the first direction is greater than the height of the pixel defining portion on the other side; Preferably, the protrusion is located on one side of the pixel opening in the second direction, the height of the pixel defining portion on the opposite side of the protrusion in the second direction is greater than the height of the pixel defining portion on the other side, and the first direction and the second direction intersect.

6. The display panel according to claim 1, characterized in that: The multiple sub-pixels include a first sub-pixel, a second sub-pixel and a third sub-pixel, the luminous brightness of the first sub-pixel is greater than the luminous brightness of the second sub-pixel and the third sub-pixel, and the height dimension of at least part of the pixel defining portion around the first sub-pixel is greater than the height dimension of the remaining pixel defining portions.

7. The display panel according to claim 6, characterized in that: The thickness of the first sub-pixel is greater than the thickness of the second sub-pixel, the height dimension of at least a portion of the pixel defining portion enclosed to form the first sub-pixel is a1, and the height dimension of at least a portion of the pixel defining portion enclosed to form the second sub-pixel is a2, wherein a1>a2; Preferably, the thickness of the second sub-pixel is greater than the thickness of the third sub-pixel, and the height dimension of at least a portion of the pixel defining portion enclosing the third sub-pixel is a3, wherein a2>a3.

8. The display panel according to claim 6, characterized in that: The height dimensions of the pixel defining parts on both sides of the first sub-pixel in the first direction and the height dimensions of the pixel defining parts on both sides of the second direction are respectively greater than the height dimensions of the remaining pixel defining parts.

9. The display panel according to claim 8, characterized in that: The heights of the pixel defining parts of the first sub-pixel on both sides of the first direction and the second direction are equal.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

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