Display panel and display device

Abstract

This application discloses a display panel and display device, belonging to the field of display technology. Its purpose is to at least improve the problem of poor privacy protection and display effect caused by the single slope design of the pixel definition layer opening. The display panel includes a pixel definition layer, a first privacy pixel, and a second privacy pixel located on a substrate. The first angle between the sidewall and bottom surface of the first opening in the pixel definition layer is smaller than the second angle between the sidewall and bottom surface of the second opening. The first privacy pixel includes a first light-emitting portion and a first privacy portion. A first light-emitting segment of the first light-emitting portion covers the bottom surface of the first opening, and a second light-emitting segment covers at least a portion of the sidewall of the first opening. The second light-emitting portion of the second privacy pixel covers at least a portion of the sidewall of the second opening. The first privacy portion is used to block part of the light emitted by the first light-emitting portion, and the orthographic projection of the first privacy portion on the substrate is located on at least one side of the orthographic projection of the first light-emitting segment on the substrate.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] With the continuous development of display technology, OLED (Organic Light-Emitting Diode) display panels have been widely used in various electronic devices such as smartphones, tablets, and laptops. As people use these electronic devices in public places more and more often, the demand for screen privacy protection has also increased significantly.

[0003] In related technologies, the opening of the pixel definition layer adopts a single slope design, and the light-emitting parts in the privacy pixel and the shared pixel have the same light emission pattern. The opening of the pixel definition layer is not adapted to the different functional requirements of the light-emitting parts, which makes it difficult to accurately control the light propagation direction of the light-emitting parts. Either it cannot effectively block the side viewing light and affect the privacy effect, or it excessively blocks the front viewing light and affects the front display effect. Ultimately, the display panel cannot meet the user's dual needs for privacy protection and display experience. Summary of the Invention

[0004] This application provides a display panel and display device to at least improve the problem in the related art where the pixel definition layer opening adopts a single slope design, which makes it difficult for the display panel to meet the user's dual needs for privacy protection and display experience.

[0005] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, comprising: Substrate; A pixel definition layer is located on the substrate and has multiple openings. Along the direction of the pixel definition layer away from the substrate, the size of each opening gradually increases in a first direction, which is perpendicular to the thickness direction of the substrate. The multiple openings include a first opening and a second opening. The first angle between the sidewall and the bottom surface of the first opening is smaller than the second angle between the sidewall and the bottom surface of the second opening. A first privacy pixel includes a first light-emitting portion and a first privacy portion. The first light-emitting portion is located within the first opening. The first light-emitting portion includes a first light-emitting segment and a second light-emitting segment connected to each other. The first light-emitting segment covers the bottom surface of the first opening, and the second light-emitting segment covers at least a portion of the sidewall of the first opening. The first privacy portion is located on the side of the first light-emitting portion opposite to the substrate and is used to block part of the light emitted by the first light-emitting portion. The orthographic projection of the first privacy portion on the substrate is located on at least one side of the orthographic projection of the first light-emitting segment on the substrate. The shared pixel includes a second light-emitting portion located within the second opening, the second light-emitting portion covering at least a portion of the sidewall of the second opening.

[0006] In some embodiments, the depth of the first opening is greater than the depth of the second opening.

[0007] In some embodiments, the pixel definition layer includes a first sub-pixel definition layer and a second sub-pixel definition layer disposed sequentially along a direction away from the substrate, the first opening penetrating the first sub-pixel definition layer and the second sub-pixel definition layer, and the second opening penetrating the first sub-pixel definition layer.

[0008] In some embodiments, the thickness of the second sub-pixel definition layer is greater than the thickness of the first sub-pixel definition layer.

[0009] In some embodiments, the plurality of openings further includes a third opening, wherein the third included angle between the sidewall and the bottom surface of the third opening is different from the size of the first included angle; the display panel further includes a second privacy pixel, wherein the emission color of the second privacy pixel is different from the emission color of the first privacy pixel, the second privacy pixel includes a third light-emitting part and a second privacy part, the third light-emitting part is located within the third opening, the third light-emitting part includes a third light-emitting segment and a fourth light-emitting segment connected to each other, the third light-emitting segment covers the bottom surface of the third opening, and the fourth light-emitting segment covers at least a portion of the sidewall of the third opening; the second privacy part is located on the side of the third light-emitting part away from the substrate and is used to block part of the light emitted by the third light-emitting part, and the orthographic projection of the second privacy part on the substrate is located on at least one side of the orthographic projection of the third light-emitting segment on the substrate.

[0010] In some embodiments, the second privacy pixel is used to emit green light, and the first privacy pixel is used to emit either red light or blue light; the third included angle is greater than the first included angle.

[0011] In some embodiments, the third included angle is less than or equal to the second included angle.

[0012] In some embodiments, the display panel further includes a black matrix located on the side of the pixel definition layer opposite to the substrate, the black matrix having a first pixel hole exposing the first light-emitting portion and a second pixel hole exposing the third light-emitting portion; the first privacy pixel further includes a first filter portion located within the first pixel hole; the second privacy pixel further includes a second filter portion located within the second pixel hole.

[0013] In some embodiments, the first included angle is greater than 90° and less than or equal to 120°.

[0014] In some embodiments, the second included angle is greater than or equal to 150° and less than or equal to 160°.

[0015] In some embodiments, the display panel further includes a black matrix located on the side of the first light-emitting portion facing away from the substrate, the black matrix having a first pixel hole, the orthographic projection of the first opening on the substrate being located within the orthographic projection of the first pixel hole on the substrate; the first privacy portion having a light-transmitting hole, the orthographic projection of the first pixel hole on the substrate being located within the orthographic projection of the light-transmitting hole on the substrate.

[0016] According to a second aspect of this application, a display device is provided, including a display panel as described in any embodiment of the first aspect.

[0017] In the display panel of this application embodiment, by providing multiple openings in the pixel definition layer, including a first opening and a second opening, and the first angle between the sidewall and the bottom surface of the first opening is smaller than the second angle between the sidewall and the bottom surface of the second opening, the slope of the pixel definition layer at the first opening is steeper than the slope at the second opening. This causes the light emitted by the second light-emitting segment located on the sidewall of the first opening to be emitted in a direction that is more biased towards the side viewing angle and at a larger angle, providing a good structural basis for the blocking effect of the first privacy part. At the same time, the first privacy part is disposed on the side of the first light-emitting segment away from the substrate, and its orthogonal projection on the substrate is located on at least one side of the orthogonal projection of the first light-emitting segment on the substrate. This effectively blocks the light emitted by the second light-emitting segment located on the sidewall of the first opening from the side viewing angle and at a larger angle, while not significantly blocking the light emitted by the first light-emitting segment from the front viewing angle. Thus, while achieving excellent privacy protection, the front display brightness of the display panel in the privacy state is effectively guaranteed. Furthermore, because the slope of the pixel definition layer at the second opening is relatively gentler, the light emitted by the second light-emitting part located on the sidewall of the second opening is more biased towards the front viewing angle, thereby effectively ensuring the front display brightness of the display panel in the shared state. Therefore, the display panel provided in this application embodiment can effectively balance privacy protection and display effect to meet the user's dual needs for privacy protection and display experience.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of a display panel in related technologies; Figure 2 This is a cross-sectional view of a display panel provided in some embodiments of this disclosure; Figure 3 This is a cross-sectional view of a display panel provided in some other embodiments of this disclosure; Figure 4 This is a cross-sectional view of a display panel provided in some embodiments of the present disclosure; Figure 5 This is a cross-sectional view of a display panel provided in some embodiments of this disclosure; Figure 6 This is a top view of a display panel provided in some embodiments of this disclosure; Figure 7 This is a top view of a display device provided in some embodiments of this disclosure. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0022] Based on the problems mentioned in the background art, the background of this application will be further explained first.

[0023] In related technologies, such as Figure 1 As shown, the display panel includes a privacy pixel 11', a shared pixel 12', and a pixel definition layer 13'. The privacy pixel 11' includes a first light-emitting part 111' and a first privacy part 121'. The first privacy part 121' is used to block the side-view light emitted by the first light-emitting part 111'. The shared pixel 12' includes a second light-emitting part 121', but the second light-emitting part 121' does not have a first privacy part. Because the side-view light of the privacy pixel 11' is blocked, the light it emits is concentrated in the front-view direction. When the shared pixel 12' is off and the privacy pixel 11' is on, the display panel is in a privacy state. When at least the shared pixel 12' is on, the display panel is in a shared state.

[0024] The pixel definition layer 13' has multiple openings, and the first light-emitting part 111' of the privacy pixel 11' and the second light-emitting part 121' of the shared pixel 12' are disposed in the corresponding openings. The openings of the pixel definition layer 13' adopt a single slope design. If the slope of the opening is small, the light emitted by the light-emitting segment located on the sidewall 131' of the opening in the first light-emitting part 111' will be concentrated and biased towards the light-transmitting hole defined by the first privacy part 121'. This part of the light, such as... Figure 1 As indicated by the lines with arrows, the privacy screen 11' is difficult to effectively block, thus forming side-view light from the privacy pixel 11' and affecting the privacy effect of the display panel, making it difficult to meet the user's privacy protection needs. Furthermore, with a reduced light-transmitting aperture in the first privacy screen 121', the front-view light from the privacy pixel 11' decreases, affecting the front display brightness of the display panel in privacy mode. Additionally, if the slope of the opening in the pixel definition layer 13' is large, the light emitted by the light-emitting segment located on the opening sidewall 131' in the second light-emitting part 121' will primarily be used to form side-view light from the shared pixel 12', resulting in a weakening of the front-view brightness of the shared pixel 12', thereby affecting the front display brightness of the display panel in shared mode.

[0025] Based on this, some embodiments of this application provide a display panel, such as... Figure 2 As shown, the display panel 100 includes: a substrate 10, a pixel definition layer 20, a light-emitting layer 30, and a first privacy layer 40.

[0026] The pixel definition layer 20 is located on the substrate 10 and has multiple openings K. Along the direction of the pixel definition layer 20 away from the substrate 10, the size of each opening K gradually increases in a first direction X, which is perpendicular to the thickness direction Z of the substrate 10. Because the size of the opening K in the first direction X gradually increases along the direction of the pixel definition layer 20 away from the substrate 10, the openings K have an outwardly expanding structure. In some examples, the top or bottom of the opening K can be circular, elliptical, rectangular, etc. When the bottom of the opening is circular, the size of the bottom surface of the opening K in the first direction X is the diameter of the bottom surface of the opening K.

[0027] The multiple openings K include a first opening K1 and a second opening K2. The first angle α between the sidewall and the bottom surface of the first opening K1 is smaller than the second angle β between the sidewall and the bottom surface of the second opening K2. The angle between the sidewall and the bottom surface of each opening K is complementary to the slope angle (taper angle) of the pixel definition layer 20 at the corresponding opening K. The first angle α of the first opening K1 is relatively small; therefore, the slope angle of the pixel definition layer 20 at the first opening K1 is relatively large, resulting in a relatively steeper slope.

[0028] The light-emitting layer 30 includes a first light-emitting portion 31 and a second light-emitting portion 32. The first light-emitting portion 31 is located within the first opening K1. The first light-emitting portion 31 includes a first light-emitting segment 311 and a second light-emitting segment 312 that are connected to each other. The first light-emitting segment 311 covers the bottom surface of the first opening K1, and the second light-emitting segment 312 covers at least a portion of the sidewall of the first opening K1. As an example, the orthographic projection of the boundary line between the second light-emitting segment 312 and the first light-emitting segment 311 onto the sidewall of the first opening K1 overlaps with the edge of the sidewall of the first opening K1.

[0029] The second light-emitting portion 32 is located within the second opening K2, and the second light-emitting portion 32 covers at least a portion of the sidewall of the second opening K2. As an example, the second light-emitting portion 32 may also cover the bottom surface of the second opening K2. In this case, the second light-emitting portion 32 includes a fifth light-emitting segment 321 and a sixth light-emitting segment 322 connected to each other, wherein the fifth light-emitting segment 321 covers the bottom surface of the second opening K2, and the sixth light-emitting segment 322 covers at least a portion of the sidewall of the second opening K2. Exemplarily, the orthographic projection of the boundary line between the fifth light-emitting segment 321 and the sixth light-emitting segment 322 onto the sidewall of the second opening K2 overlaps with the edge of the sidewall of the second opening K2.

[0030] The first privacy layer 40 includes a first privacy portion 41, which is located on the side of the first light-emitting portion 31 facing away from the substrate 10 and is used to block part of the light emitted by the first light-emitting portion 31. The orthographic projection of the first privacy portion 41 on the substrate 10 is located on at least one side of the orthographic projection of the first light-emitting segment 311 on the substrate 10. In this case, the first privacy portion 41 blocks the side-view light of the first light-emitting portion 31. The first privacy portion 41 and the first light-emitting portion 31 are used to form at least a portion of the first privacy pixel P11. Since the first privacy portion 41 is not provided on the light-emitting side of the second light-emitting portion 32, the second light-emitting portion 32 is used to form at least a portion of the shared pixel P2.

[0031] In this embodiment, because the slope angle of the pixel definition layer 20 at the first opening K1 is relatively large, the light emitted by the second light-emitting segment 312 is more biased towards the side viewing angle and a larger angle direction. This part of the light, such as Figure 2As indicated by the arrow lines, this provides a good structural basis for the shielding effect of the first privacy shield 41. Simultaneously, the first privacy shield 41 is located on the side of the first light-emitting section 31 facing away from the substrate 10, effectively blocking the wide-angle light emitted from the second light-emitting section 312 at a side viewing angle, while not significantly obstructing the light emitted from the first light-emitting section 311 at a frontal viewing angle. Thus, while achieving excellent privacy protection, it effectively ensures the frontal display brightness of the display panel 100 in the privacy state. Furthermore, because the slope angle of the pixel definition layer 20 at the second opening K2 is relatively small, the light emitted by the second light-emitting section 32 located on the sidewall of the second opening K2 is more biased towards the frontal viewing angle, thereby effectively ensuring the frontal display brightness of the display panel 100 in the shared state. Therefore, the display panel 100 provided in this embodiment can effectively balance privacy protection and display effect, meeting the user's dual needs for privacy protection and display experience.

[0032] In some embodiments, the first included angle α is greater than 90° and less than or equal to 120°. That is, the slope angle of the pixel definition layer 20 at the first opening K1 is greater than or equal to 60° and less than 90°.

[0033] In this case, the pixel definition layer 20 has a steeper slope at the first opening K1, which can effectively block the light emitted by the second light-emitting segment 312 through the first privacy part 41, thereby achieving excellent privacy protection while effectively ensuring the front display brightness of the display panel 100 in the privacy state.

[0034] In some examples, the first included angle α can be 100°, 105°, 110°, 115°, or 120°, etc.

[0035] In some embodiments, the second included angle β is greater than or equal to 150° and less than or equal to 160°. That is, the slope angle of the pixel definition layer 20 at the second opening K2 is greater than or equal to 20° and less than or equal to 30°.

[0036] In this case, the slope of the pixel definition layer 20 at the second opening K2 is relatively gentle, which allows more light emitted from the sixth light-emitting segment 322 to be emitted from the front viewing angle, thereby effectively ensuring the front display brightness of the display panel 100 in the shared state.

[0037] In some examples, the second included angle β can be 150°, 152°, 154°, 155°, 156°, 158°, 160°, etc.

[0038] In some embodiments, please continue reading Figure 2 The depth H1 of the first opening K1 is greater than the depth H2 of the second opening K2.

[0039] In some embodiments, such as Figure 3 As shown, the pixel definition layer 20 includes a first sub-pixel definition layer 21 and a second sub-pixel definition layer 22 arranged sequentially along a direction away from the substrate 10. A first opening K1 penetrates the first sub-pixel definition layer 21 and the second sub-pixel definition layer 22, and a second opening K2 penetrates the first sub-pixel definition layer 21.

[0040] In this embodiment, by fabricating the first sub-pixel definition layer 21 and the second sub-pixel definition layer 22 in stages, it is beneficial to realize the fabrication of the pixel definition layer 20, while simultaneously satisfying that the depth of the first opening K1 is greater than the depth of the second opening K2.

[0041] In some examples, the first subpixel definition layer 21 and the second subpixel definition layer 22 can be made of different materials, which is beneficial for controlling the slope of the first opening K1 and the second opening K2 respectively.

[0042] In some examples, the first subpixel definition layer 21 and the second subpixel definition layer 22 can each be made of a transparent photoresist material.

[0043] In some embodiments, please continue reading Figure 3 The first subpixel definition layer 21 has an auxiliary opening AK, and the second subpixel definition layer 22 covers the sidewall of the auxiliary opening AK.

[0044] In the specific implementation process, a first photoresist material corresponding to the first sub-pixel definition layer 21 can be coated first. Then, an auxiliary opening AK and a second opening K2 are formed through photolithography. Next, a second photoresist material corresponding to the second sub-pixel definition layer 22 is coated. The second photoresist material fills the auxiliary opening AK and the second opening K2. Then, a portion of the second photoresist material in the auxiliary opening AK and all of the second photoresist material in the second opening K2 are removed through photolithography, thereby finally forming the pixel definition layer 20. The remaining material in the auxiliary opening AK covers the sidewalls of the auxiliary opening AK, increasing the slope angle of the finally formed first opening K1.

[0045] In some examples, the thickness T2 of the second sub-pixel defining layer 22 is greater than the thickness T1 of the first sub-pixel defining layer 21. Specifically, the thickness T1 of the first sub-pixel defining layer 21 is the same as the thickness of the first photoresist coating, and the thickness T2 of the second sub-pixel defining layer 22 is the same as the thickness of the second photoresist coating.

[0046] This configuration allows the second photoresist material to fully fill the auxiliary opening AK, thereby ensuring that the second sub-pixel definition layer 22 effectively covers the sidewalls of the auxiliary opening AK, and thus guaranteeing the quality of the final formed first opening K1.

[0047] In some examples, the thickness T2 of the second subpixel definition layer 22 is greater than or equal to 2 micrometers and less than or equal to 4 micrometers. As an example, the thickness T2 of the second subpixel definition layer 22 is equal to 3 micrometers, while the thickness T1 of the first subpixel definition layer 21 is equal to 2 micrometers.

[0048] In some embodiments, in the first direction X, the dimension D1 of the bottom surface of the auxiliary opening AK is equal to the dimension D2 of the bottom surface of the second opening K2.

[0049] In related technologies, the pixel definition layer has the same size opening at the corresponding privacy pixel or shared pixel position. However, in this application, since the bottom surface size D1 of the auxiliary opening AK is equal to the bottom surface size D2 of the second opening K2, the first sub-pixel definition layer 21 can be fabricated using the same mask as in the related technologies. This avoids the need to create a new mask to fabricate the first sub-pixel definition layer 21, thereby effectively saving the manufacturing cost of the display panel 100.

[0050] In some embodiments, please continue reading Figure 3 In the first direction X, the dimension D1 of the bottom surface of the first opening K1 is equal to the dimension D2 of the bottom surface of the second opening K2.

[0051] This configuration allows the first light-emitting segment 311 and the fifth light-emitting segment 321 to have the same size in the first direction X, thereby making the first privacy pixel P11 and the shared pixel P2 have approximately the same size. This reduces the problem of decreased display quality of the display panel 100 due to size differences between the first privacy pixel P11 and the shared pixel P2.

[0052] In some examples, in the first direction X, the size of the bottom surface of the auxiliary opening AK is equal to the size D2 of the bottom surface of the second opening K2. In this case, the orthographic projection of the second sub-pixel definition layer 22 on the substrate 10 does not overlap with the orthographic projection of the bottom surface of the auxiliary opening AK on the substrate 10.

[0053] In some embodiments, please continue reading Figure 3 The display panel 100 also includes a black matrix 50 located on the side of the first light-emitting part 31 away from the substrate 10. The black matrix 50 has a first pixel hole PH1. The orthographic projection of the first opening K1 on the substrate 10 is located within the orthographic projection of the first pixel hole PH1 on the substrate 10, which can effectively increase the amount of light emitted by the first light-emitting part 31.

[0054] In some examples, the first pixel hole PH1 exposes the first light-emitting part 31, the first privacy part 41 has a light-transmitting hole TH, and the orthographic projection of the first pixel hole PH1 on the substrate 10 is located within the orthographic projection of the light-transmitting hole TH on the substrate 10.

[0055] This configuration makes the light-transmitting hole TH larger than the first pixel hole PH1 in the first direction X, which can effectively prevent the first privacy part 41 from blocking the positive viewing angle light emitted by the first light-emitting part 31, thereby improving the display brightness of the display panel 100.

[0056] In some examples, both the light-transmitting aperture TH and the first pixel aperture PH1 can be circular openings.

[0057] In some examples, the black matrix 50 also has a third pixel hole PH3. The display panel 100 also includes a first filter CF1 located in the first pixel hole PH1 and a third filter CF3 located in the third pixel hole PH3. The first filter CF1 can convert light emitted from the first light-emitting unit 31 and passing through the first filter CF1 into light of the same color. Similarly, the third filter CF3 can convert light emitted from the second light-emitting unit 32 and passing through the third filter CF3 into light of the same color.

[0058] In some examples, the display panel 100 further includes a pixel circuit layer and a planarization layer on the substrate 10, with the pixel definition layer 20 located on the side of the planarization layer facing away from the substrate 10. A plurality of anodes 71 are disposed on the planarization layer, and the anodes 71 are connected to corresponding pixel circuits in the pixel circuit layer through vias in the planarization layer. Furthermore, a cathode layer 72 is also disposed on the side of the pixel definition layer 20 facing away from the substrate 10, with the first light-emitting portion 31 and the second light-emitting portion 32 located between the corresponding anodes 71 and cathode layers 72, respectively.

[0059] In some examples, the display panel 100 further includes an encapsulation layer 61 and a touch structure layer disposed sequentially on the cathode layer 72 and in a direction away from the substrate 10. A black matrix 50 is disposed on the side of the touch structure layer away from the substrate 10. Furthermore, a first planar structure layer 62 may be disposed on the side of the black matrix 50 away from the substrate 10, which can provide a flat surface for the fabrication of the first privacy screen 41. A second planar structure layer 63 may also be disposed on the side of the first privacy screen 40 where the first privacy screen 41 is located away from the substrate 10. The second planar structure layer 63 and the first planar structure layer 62 may be made of a transparent organic material.

[0060] In some embodiments, such as Figure 4 and Figure 5 As shown, the multiple openings also include a third opening K3, and the third included angle γ between the sidewall and the bottom surface of the third opening K3 is different from the first included angle α. That is, the slope angle of the pixel definition layer 20 at the third opening K3 is different from the slope angle at the first opening K1.

[0061] The display panel 100 also includes a second privacy pixel P12, the emission color of which is different from that of the first privacy pixel P11. The second privacy pixel P12 includes a third light-emitting portion 33 and a second privacy portion 42. The third light-emitting portion 33 is located within the third opening K3 and includes a third light-emitting segment 331 and a fourth light-emitting segment 332 connected to each other. The third light-emitting segment 331 covers the bottom surface of the third opening K3, and the fourth light-emitting segment 332 covers at least a portion of the sidewall of the third opening K3. Exemplarily, the orthographic projection of the boundary line between the third light-emitting segment 331 and the fourth light-emitting segment 332 onto the sidewall of the third opening K3 overlaps with the edge of the sidewall of the third opening K3. The second privacy portion 42 is located on the side of the third light-emitting portion 33 facing away from the substrate 10 and is used to block part of the light emitted by the third light-emitting portion 33. The orthographic projection of the second privacy portion 42 onto the substrate 10 is located on at least one side of the orthographic projection of the third light-emitting segment 331 onto the substrate 10. In this case, the second privacy screen 42 blocks the side-view light of the third light-emitting part 33 so that the light emitted by the second privacy screen pixel P12 is concentrated in the front-view direction.

[0062] In this embodiment, since the slope angle of the pixel definition layer 20 at the third opening K3 is different from that at the first opening K1, the light emission of the second privacy pixel P12 and the first privacy pixel P11 can be differentiated. This allows for the adjustment of the light emission of privacy pixels of certain colors as needed, thereby improving the color shift problem of the display panel 100.

[0063] In some examples, the second privacy screen 42 and the first privacy screen 41 are disposed on the same layer and located in the first privacy layer 40.

[0064] In some examples, the first privacy pixel P11 may further include a third privacy portion 81 located on the side of the first privacy portion 41 facing away from the substrate 10. The third privacy portion 81 and the first privacy portion 41 cooperate to block the large-angle and small-angle side-view light emitted by the first light-emitting portion, thereby ensuring that the first privacy pixel P11 has a good privacy function. Similarly, the second privacy pixel P12 may further include a fourth privacy portion 82 located on the side of the second privacy portion 42 facing away from the substrate 10. The fourth privacy portion 82 and the second privacy portion 42 cooperate to block the large-angle and small-angle side-view light emitted by the third light-emitting portion, thereby ensuring that the second privacy pixel P12 has a good privacy function. As an example, the third privacy portion 81 and the fourth privacy portion 82 may be located in the second privacy layer 80. The second privacy layer 80 and the first privacy layer 40 may be separated by a second planar structure layer 63.

[0065] In some embodiments, please continue reading Figure 4 and Figure 5The first privacy pixel P11 emits green light, and the second privacy pixel P12 emits either red or blue light. The third included angle γ is greater than the first included angle α. The third included angle γ of the third opening K3 is relatively small, so the slope angle of the pixel definition layer 20 at the third opening K3 is relatively small, and the slope is relatively gentler.

[0066] In this embodiment, since the slope angle of the pixel definition layer 20 at the third opening K3 is relatively small, the light emitted by the third light-emitting part 33 located on the side wall of the third opening K3 is more biased towards the positive viewing angle direction, thereby reducing the amount of light leakage of the second privacy pixel P12 at a large viewing angle, and thus effectively improving the problem of the display panel 100 being reddish at a large viewing angle.

[0067] It is understandable that for organic light-emitting diodes (OLEDs), when the slope angle at all openings remains consistent, the green light emitted by the green sub-pixel attenuates the least at wide viewing angles. Therefore, the green light leakage is strongest at wide viewing angles, ultimately leading to a reddish tint at wide viewing angles. This embodiment effectively improves this problem by differentiating the openings corresponding to the first privacy pixel P11 and the second privacy pixel P12.

[0068] In some examples, the third included angle γ is equal to the second included angle β. In this case, the third opening K3 and the second opening K2 can be manufactured using the same process.

[0069] In other examples, the third included angle γ is smaller than the second included angle β. This allows for better control of the light leakage of the second privacy pixel P12 at wide viewing angles, thereby improving the optimization effect on the display panel 100 at wide viewing angles.

[0070] As an example, please refer to Figure 5 The pixel definition layer 20 may include a first sub-pixel definition layer 21, a second sub-pixel definition layer 22, and a third sub-pixel definition layer 23. The second sub-pixel definition layer 22 is used to define the first opening K1, and its specific implementation can be referred to the above description, which will not be repeated here. The third sub-pixel definition layer 23 is used to define the third opening K3, and its specific implementation can be referred to the second sub-pixel definition layer 22, which will not be repeated here.

[0071] In some embodiments, the display panel 100 further includes a black matrix 50 located on the side of the pixel definition layer 20 opposite to the substrate 10. The black matrix 50 has a first pixel hole PH1 exposing the first light-emitting portion 31 and a second pixel hole PH2 exposing the third light-emitting portion 33. The first privacy pixel P11 also includes a first filter portion CF1 located within the first pixel hole PH1, which is one of a red filter portion and a blue filter portion. The second privacy pixel P12 also includes a second filter portion CF2 located within the second pixel hole PH2, which is a green filter portion. Light emitted by the first light-emitting portion or the third light-emitting portion emits light of the same color after passing through the filter portion of the corresponding color. For example, light emitted by the third light-emitting portion emits green light after passing through the green filter portion.

[0072] In some embodiments, such as Figure 6 As shown, Figure 6 The diagram shows three privacy pixels and three shared pixels, with the three privacy pixels located on the left and the three shared pixels on the right. The three privacy pixels (e.g., a first privacy pixel emitting red light, a second privacy pixel emitting green light, and a third privacy pixel emitting blue light) constitute a privacy pixel group, and the three shared pixels constitute a shared pixel group. A shared pixel group and a privacy pixel group together constitute a display unit, and multiple display units are arranged in an array in the display panel 100.

[0073] As an example, in a privacy pixel group, the first privacy pixel corresponding to the first filter CF1 achieves privacy through the first privacy 41, the second privacy pixel corresponding to the second filter CF2 achieves privacy through the second privacy 42, and the third privacy pixel corresponding to the fourth filter CF4 achieves privacy through the third privacy 43.

[0074] In some examples, the filter portion of the shared pixel (e.g., the third filter portion CF3) is fabricated in the same layer as the filter portion of the privacy pixel, which can effectively improve the manufacturing efficiency of the display panel 100 and reduce the manufacturing cost of the display panel 100.

[0075] Some embodiments of this application also provide a display device, such as... Figure 7 As shown, the display device 200 includes the display panel 100 of any of the above embodiments.

[0076] Since it includes the display panel 100, the display device 200 has the technical effects of the display panel 100, which will not be described in detail here.

[0077] In some examples, the display device 200 may be, for example, a laptop computer, a vehicle display, or a mobile phone.

[0078] In the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," and "third" may explicitly or implicitly include one or more features. For example, the presence of a third filter section does not necessarily mean that the corresponding solution includes a first or second filter section. Similarly, the presence of a fourth light-shielding structure does not necessarily mean that the corresponding solution includes a first, second, or third light-shielding structure. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0079] In the description of this application, "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B. The use of "for" implies open and inclusive language, which does not exclude devices that are applicable to or configured to perform additional tasks or steps.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0082] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized by, include: Substrate; A pixel definition layer is located on the substrate and has multiple openings. Along the direction of the pixel definition layer away from the substrate, the size of each opening gradually increases in a first direction, which is perpendicular to the thickness direction of the substrate. The multiple openings include a first opening and a second opening. The first angle between the sidewall and the bottom surface of the first opening is smaller than the second angle between the sidewall and the bottom surface of the second opening. The first privacy pixel includes a first light-emitting part and a first privacy part. The first light-emitting part is located inside the first opening. The first light-emitting part includes a first light-emitting segment and a second light-emitting segment connected to each other. The first light-emitting segment covers the bottom surface of the first opening, and the second light-emitting segment covers at least a portion of the sidewall of the first opening. The first privacy part is located on the side of the first light-emitting part away from the substrate and is used to block part of the light emitted by the first light-emitting part. The orthographic projection of the first privacy part on the substrate is located on at least one side of the orthographic projection of the first light-emitting segment on the substrate. as well as The shared pixel includes a second light-emitting portion located within the second opening, the second light-emitting portion covering at least a portion of the sidewall of the second opening.

2. The display panel according to claim 1, characterized in that, The depth of the first opening is greater than the depth of the second opening.

3. The display panel according to claim 2, characterized in that, The pixel definition layer includes a first sub-pixel definition layer and a second sub-pixel definition layer arranged sequentially along a direction away from the substrate. The first opening penetrates the first sub-pixel definition layer and the second sub-pixel definition layer, and the second opening penetrates the first sub-pixel definition layer.

4. The display panel according to claim 3, characterized in that, The thickness of the second sub-pixel definition layer is greater than the thickness of the first sub-pixel definition layer.

5. The display panel according to any one of claims 1-4, characterized in that, The plurality of openings also includes a third opening, wherein the third included angle between the sidewall and the bottom surface of the third opening is different from the size of the first included angle; The display panel further includes a second privacy pixel, the second privacy pixel emitting a different color than the first privacy pixel emitting a different color. The second privacy pixel includes a third light-emitting portion and a second privacy portion. The third light-emitting portion is located within the third opening. The third light-emitting portion includes a third light-emitting segment and a fourth light-emitting segment connected to each other. The third light-emitting segment covers the bottom surface of the third opening, and the fourth light-emitting segment covers at least a portion of the sidewall of the third opening. The second privacy portion is located on the side of the third light-emitting portion away from the substrate and is used to block part of the light emitted by the third light-emitting portion. The orthographic projection of the second privacy portion on the substrate is located on at least one side of the orthographic projection of the third light-emitting segment on the substrate.

6. The display panel according to claim 5, characterized in that, The second privacy pixel is used to emit green light, and the first privacy pixel is used to emit either red or blue light; the third included angle is greater than the first included angle.

7. The display panel according to claim 6, characterized in that, The third included angle is less than or equal to the second included angle.

8. The display panel according to claim 5, characterized in that, It also includes a black matrix located on the side of the pixel definition layer opposite to the substrate, the black matrix having a first pixel hole exposing the first light-emitting part and a second pixel hole exposing the third light-emitting part; The first privacy pixel also includes a first filter portion located within the first pixel aperture; The second privacy pixel also includes a second filter located within the second pixel hole.

9. The display panel according to any one of claims 1-4, characterized in that, The first included angle is greater than 90° and less than or equal to 120°; and / or The second included angle is greater than or equal to 150° and less than or equal to 160°.

10. The display panel according to any one of claims 1-4, characterized in that, It also includes a black matrix located on the side of the first light-emitting part away from the substrate, the black matrix having a first pixel hole, and the orthographic projection of the first opening on the substrate being located within the orthographic projection of the first pixel hole on the substrate; The first privacy screen has a light-transmitting hole, and the orthographic projection of the first pixel hole on the substrate is located within the orthographic projection of the light-transmitting hole on the substrate.

11. A display device, characterized in that, Includes the display panel described in any one of claims 1-10.

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