Display panel and display device

Abstract

The invention provides a display panel and a reality device, the display panel comprises a substrate, a plurality of pixel units are located on one side of the substrate, and each pixel unit comprises a first pixel and i second pixels; i > = 2, and i is an integer; the light-emitting layer is located on one side of the substrate; the light shielding layer is located on the side, away from the substrate, of the light emitting layer and comprises a plurality of light shielding structures, and orthographic projections of the light shielding structures on the light emitting layer at least partially surround the second pixels; the dimming layer is located on the side, away from the substrate, of the light-emitting layer. The dimming layer comprises a first filtering structure, and the orthographic projection of the first filtering structure on the light-emitting layer is located between two adjacent second pixels. The display panel can have a good display effect at the peep-proof angle, and meanwhile the service life of the display panel can be prolonged.

Description

Technical Field

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

[0002] As the application of display panels in mobile phones, watches and other devices continues to mature, the application areas of display panels are also expanding. For example, in recent years, the application of display panels in electronic products such as cars and notebooks has gradually increased. During the use process, consumers' demands are also constantly increasing, such as requirements for the anti-peeping performance of display panels. However, the display panels in the related art are prone to poor display and reduced display life when switched to the anti-peeping state. Summary of the invention

[0003] The present invention provides a display panel and a display device, which can realize that the display panel has a better display effect at an anti-peeping viewing angle and can prolong the service life of the display panel.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0005] substrate substrate;

[0006] A plurality of pixel units are located on one side of the substrate, wherein the pixel unit includes a first pixel and i second pixels; i≥2, i is an integer;

[0007] A light-emitting layer is located on one side of the substrate;

[0008] a light shielding layer, located on a side of the light emitting layer away from the base substrate, comprising a plurality of light shielding structures, wherein the orthographic projection of the light shielding structure on the light emitting layer at least partially surrounds the second pixel;

[0009] The dimming layer is located at a side of the light-emitting layer away from the base substrate; the dimming layer comprises a first filter structure, and the orthographic projection of the first filter structure on the light-emitting layer is located between two adjacent second pixels.

[0010] In a second aspect, an embodiment of the present invention further provides a display device, which includes the display panel provided in the first aspect.

[0011] The display panel provided by the embodiment of the present invention includes a substrate, a plurality of pixel units are located on one side of the substrate, the pixel units include a first pixel and i second pixels; a light emitting layer is located on one side of the substrate; a light shielding layer is located on the side of the light emitting layer away from the substrate, the light shielding layer includes a plurality of light shielding structures, the light shielding structures at least partially surround the second pixels on the positive projection of the light emitting layer; a dimming layer is located on the side of the light emitting layer away from the substrate; the dimming layer includes a first filter structure, the positive projection of the first filter structure on the light emitting layer is located between two adjacent second pixels. By adopting the above technical solution, the first filter structure is set at the partition position between two connected second pixels, so as to increase the light output of the second pixel at the positive viewing angle, reduce the brightness at a large viewing angle, and improve the display effect. In this way, the driving current of the second pixel can be reduced on the basis of the original display brightness, the life of the second pixel can be extended, the display effect of the display panel can be improved, and the ultimate service life of the display panel can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a display panel provided by the prior art;

[0013] Figure 2 yes Figure 1 A schematic cross-sectional view of a display panel along the 00' direction;

[0014] Figure 3 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0015] Figure 4 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0016] Figure 5 yes Figure 3 A schematic cross-sectional view of a display panel along the AA' direction;

[0017] Figure 6 yes Figure 3 A schematic cross-sectional view of another display panel along the AA' direction;

[0018] Figure 7 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 8 yes Figure 7 A schematic cross-sectional view of a display panel along the BB' direction;

[0020] Fig. 9 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0021] Fig.10 yes Fig. 9A schematic cross-sectional view of a display panel along the CC' direction;

[0022] Fig.11 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0023] Fig.12 yes Fig. 9 A schematic cross-sectional view of a display panel along the DD' direction;

[0024] Fig.13 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0025] Fig.14 yes Fig.13 A schematic cross-sectional view of a display panel along the EE' direction;

[0026] Fig.15 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] Figure 1 is a structural schematic diagram of a display panel provided by the prior art. Figure 2 yes Figure 1 A schematic cross-sectional view of a display panel along the 00' direction, see Figure 1 and Figure 2 In the prior art, the display panel 100 can be used in a vehicle. Usually, the vehicle-mounted active anti-peeping solution (left and right anti-peeping) adopts a pixel segmentation method. For example, the red pixel 10R is segmented into two red anti-peeping pixels 10R1 and one red shared pixel 10R2, and the green pixel 10G and the blue pixel 10B are also segmented into two anti-peeping pixels and one shared pixel ( Figure 1(not shown), a black matrix (BM) is set at the adjacent anti-peeping pixel segment position to achieve anti-peeping pixel anti-peeping. With the improvement of the integration of display panels, the TPOT (Touch Panel on Thin Film Transistor) process in which the touch function layer is set above the thin film encapsulation layer in the prior art has been widely used, but the TPOT structure needs to ensure an IJP (inkjet printing material) thickness of 17 microns, and the anti-peeping pixel opening size a0=10 microns, so that the black matrix BM can block the light of a 45° viewing angle to achieve left and right anti-peeping. In this way, it is necessary to limit the opening size a0 of the anti-peeping pixel after segmentation and the segment distance b0 between the anti-peeping pixel and the shared pixel after segmentation, and to increase the life of the anti-peeping pixel, the number of anti-peeping pixels needs to be increased. At the same time, in order to avoid leakage of adjacent pixels, the anti-peeping pixel segment distance b0 also needs to be increased. Many restrictions result in a very small opening rate of the anti-peeping pixel and a large driving current, which greatly reduces the life and affects the display effect and service life of the display panel.

[0029] CVD is the abbreviation of Chemical Vapor Deposition, which refers to a gas phase reaction at high temperature, for example, thermal decomposition of metal halides, organic metals, hydrocarbons, etc., hydrogen reduction, or a method of causing a mixed gas thereof to undergo a chemical reaction at high temperature to precipitate inorganic materials such as metals, oxides, and carbides.

[0030] Based on one or more of the above-mentioned technical problems, an embodiment of the present invention provides a display panel including a substrate, a plurality of pixel units located on one side of the substrate, the pixel units including a first pixel and i second pixels; i≥2, i is an integer; a light-emitting layer located on one side of the substrate; a shading layer located on a side of the light-emitting layer away from the substrate, the shading layer including a plurality of shading structures, the orthographic projection of the shading structure on the light-emitting layer at least partially surrounds the second pixel; a dimming layer located on a side of the light-emitting layer away from the substrate; the dimming layer including a first filter structure, the orthographic projection of the first filter structure on the light-emitting layer being located between two adjacent second pixels.

[0031] By adopting the above technical solution, the embodiment of the present invention sets a first filter structure at the partition position between two connected second pixels, so as to increase the light output of the second pixel at the positive viewing angle while reducing the brightness at a large viewing angle, thereby improving the display effect. In this way, the driving current of the second pixel can be reduced on the basis of the original display brightness, thereby extending the life of the second pixel.

[0032] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Figure 3 is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 4 is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 5 yes Figure 3 A schematic cross-sectional view of a display panel along the AA' direction, Figure 6 yes Figure 3 A schematic cross-sectional view of another display panel along the AA' direction is shown in FIG. Figure 3-Figure 6 The display panel 200 provided in the embodiment of the present invention includes a substrate 20. The display panel 200 may be an organic light emitting display panel (OLED), an active-matrix organic light emitting diode display panel (AMOLED), etc. The embodiment of the present invention does not limit the specific light emitting type of the display panel. The display panel 200 also includes a display area and a non-display area. The display area can display images normally, and the non-display area at least partially surrounds the display area for setting signal routing and protecting the display area.

[0034] refer to Figure 5 and Figure 6 The material of the substrate 20 includes but is not limited to rigid materials such as glass or silicon wafers, and can also be flexible materials such as ultra-thin glass, metal foil or polymer plastic materials. The flexible or rigid substrate 20 can block oxygen and moisture, preventing moisture or impurities from diffusing into the display panel 200 through the substrate 20.

[0035] refer to Figure 3-Figure 6 , the display area of ​​the display panel 200 includes a plurality of pixel units 30 for luminous display. The plurality of pixel units 30 are located on one side of the base substrate 20, and the pixel unit 30 includes a first pixel 31 and i second pixels 32. Wherein, i≥2, i is an integer. In an embodiment of the present invention, the pixel unit 30 may be a red pixel, a blue pixel, a green pixel, etc. In the embodiment of the present invention, the pixel unit 30 is divided into 1 first pixel 31 and 2 second pixels 32 as an example. In other embodiments, the pixel unit 30 may also be divided into 2 first pixels and 4 second pixels 32, etc., which are not listed one by one here.

[0036] It should be noted that the first pixel 31 can be a shared pixel, and the i second pixels 32 together constitute an anti-peeping pixel. The i second pixels 32 can be displayed in tandem (series), or can be displayed separately, and the first pixel 31 and the second pixel 32 are not connected in series. Separate display means that the second pixel 32 can be individually controlled to turn on, off, and display brightness. Figure 3 and Figure 4 The arrangement modes of the first pixel 31 and the i second pixels 32 are different to meet different display requirements.

[0037] Continue to refer Figure 5 and Figure 6 The pixel unit 30 may be an OLED device. The pixel unit 30 includes a light-emitting layer 40 located on one side of the base substrate 20. The material of the light-emitting layer 40 may be a low-molecular or high-molecular organic material.

[0038] The light shielding layer 50 is located on the side of the light emitting layer 40 away from the base substrate 20. The light shielding layer 50 includes a plurality of light shielding structures 51. The orthographic projection of the light shielding structure 51 on the light emitting layer 40 at least partially surrounds the second pixel 32. The material of the light shielding structure 51 can be a light-proof material, such as an ink material. In the embodiment of the present invention, the light shielding structure 51 is set at the wide-angle light emitting position of the second pixel 32, which can block the wide-angle light leakage of the second pixel 32, which is conducive to achieving light shielding in a wide-angle range and realizing a wide-angle anti-peeping display.

[0039] In the embodiment of the present invention, a wide viewing angle refers to that the angle between the light emitted by the pixel and the normal of the light-emitting surface is greater than or equal to 45°. In other embodiments, the wide viewing angle can also be reasonably adjusted according to the anti-peeping effect, which is not limited here. A small viewing angle light refers to that the angle between the light emitted by the pixel and the normal of the light-emitting surface is less than 45°.

[0040] In order to further improve the luminous brightness of the second pixel 32, the embodiment of the present invention sets the dimming layer 60 on the side of the light-emitting layer 40 away from the base substrate 20, and sets the dimming layer 60 to include a first filter structure 61, and the orthographic projection of the first filter structure 61 on the light-emitting layer 40 is located between two adjacent second pixels 32. Specifically, the first filter structure 61 uses a filter material, which has a certain absorption effect on light and a certain transmittance to light. The transmittance of the first filter structure 61 is set to be greater than the transmittance of the shading structure 51 in the embodiment of the present invention. It can be understood that when light passes through the first filter structure 61, the thicker the film thickness, the greater the light absorption and the lower the transmittance. It can also be understood that the greater the optical path of the light in the first filter structure 61, the greater the absorption.

[0041] The optical path refers to the product of the geometric distance traveled by light in a medium and the refractive index of the medium.

[0042] Combination Figure 5 and Figure 6 , for the light beams of different viewing angles emitted from the same second pixel 32, the film thickness of the large viewing angle light beam S+ passing through the first filter structure 61 is greater than the film thickness of the small viewing angle light beam S passing through the first filter structure 61. Thus, it can be known that the transmittance of the first filter structure 61 to the positive viewing angle light beam emitted from the second pixel 32 is the highest, and the transmittance of the large viewing angle light beam S+ decreases as the angle of emission increases. The embodiment of the present invention utilizes the characteristic that the transmittance of the first filter structure 61 to the large angle light beam S+ is lower than the transmittance of the positive viewing angle light beam, and sets the first filter structure 61 in the partition area between two adjacent second pixels 32, which can increase the brightness of the light output at the positive viewing angle and reduce the brightness of the large viewing angle. On the basis of maintaining the existing display brightness, the driving current of the second pixel 32 can be reduced to obtain a consistent display brightness, thereby facilitating the extension of the service life of the second pixel 32.

[0043] In the embodiment of the present invention, the display mode of the display panel 200 includes at least a first mode and a second mode. The first mode may be an anti-peeping state, and the second mode may be a sharing state.

[0044] In the first mode, the second pixel 32 is turned on and the first pixel 31 is turned off. The shading structure 51 can block the wide-angle light leakage of the second pixel 32, thereby improving the anti-peeping performance of the display panel. The first filtering structure 61 can absorb the wide-angle light emitted by two adjacent second pixels 32 and pass the small-angle light to increase the brightness of the positive-angle light emitted by the second pixel 32, thereby ultimately improving the display effect of the display panel and extending the service life of the display panel.

[0045] In the second mode, the first pixel 31 is turned on, and the second pixel 32 is turned on. The first pixel 31 displays light to ensure normal display of the display panel 200.

[0046] It should be noted that the reference Figure 5 and Figure 6The display panel 200 also includes other functional film layers, such as a driving circuit layer 70, a pixel definition layer (Pixel Definition Layer, PDL), a support column PS, an inkjet printing layer IJP, an inorganic layer CVD, a touch layer TP, a touch function layer TPOT, an encapsulation layer 90, etc. The driving circuit layer 70 includes a pixel circuit, and the pixel circuit can be a circuit structure of 2T1C, 4T1C, 7T1C, 7T2C, 8T1C, 8T2C, etc. The pixel circuit includes a plurality of thin film transistors (Thin Film Transistor, TFT), a storage capacitor (not shown in the figure) and a metal wiring and other film layer structures (not shown in the drawings of the embodiments of the present invention). The pixel circuit is electrically connected to the anode RE of the pixel unit 30, and is used to provide a driving voltage to the pixel unit 30 to drive the pixel unit 30 to emit light. Among them, Cathode refers to the cathode of the pixel unit 30, TM1 can refer to the first metal layer in the touch screen, such as the active layer, the scanning line layer, etc., TM2 can refer to the touch electrode source and drain data line layer, and multiple film layers work together to achieve normal display of the display panel, which will not be repeated here.

[0047] In summary, an embodiment of the present invention provides a display panel, in which a first filtering structure is arranged at a partition position between two connected second pixels, and the first filtering structure is used to absorb large-angle light and transmit small-angle light, thereby increasing the positive-angle light output of the second pixel, reducing the large-angle brightness, improving the display effect, further reducing the driving current of the second pixel, and extending the life of the second pixel, thereby ultimately improving the display performance of the display panel, extending the final service life of the display panel, and reducing the use cost of the display panel.

[0048] In some embodiments, the first filter structure 61 is taken as an example using a filter film CF. Figure 5 , Figure 6 As shown in Table 1, the transmittance of the first filter structure 61 to the 0° normal viewing angle light is T 0°％ The transmittance of light at a viewing angle of 45° is T 45°％ , T 45°％ <T 0°％ That is to say, the transmittance of the filter film CF to the light with a large viewing angle is lower than the transmittance of the light with a normal viewing angle.

[0049] Among them, 0° refers to the angle between the light and the normal line of the light-emitting surface of the display panel, and the normal line direction is Figure 5 and Figure 6 Middle Z direction.

[0050] Table 1

[0051]

[0052]

[0053] Continuing to refer to Table 1, in the embodiment of the present invention, a filter film CF is set at the interval position of two second pixels 32, and the opening ratio of the filter film CF between the two second pixels 32 is AR%. The front viewing angle brightness of the position without the filter film CF on the front viewing angle light output surface of the second pixel 32 is L 0° , 45° viewing angle brightness is L 45° , the overall front viewing angle brightness of the second pixel 32 is calculated as:

[0054] The overall normal viewing angle brightness of the second pixel 32 = L 0° +L 0° *AR%*T 0°％ This indicates that the overall front viewing angle brightness of the second pixel 32 is improved.

[0055] Further, for the 45° viewing angle brightness of the second pixel 32, when there is no filter film CF set at the interval position of two adjacent second pixels 32, the viewing angle brightness of the position is 20%. When the filter film CF is set at the interval position of two adjacent second pixels 32, the viewing angle brightness of the interval position of two adjacent second pixels 32 is calculated to be 20%*T 45°％ This indicates that the viewing angle of the interval position of two adjacent second pixels 32 is reduced.

[0056] It can be seen that compared with the design of setting a black shading structure at the segment position of two adjacent second pixels 32 in the prior art, the embodiment of the present invention sets a filter film CF at the segment position of two adjacent second pixels 32, which is beneficial to improving the overall front viewing angle brightness of the second pixel 32, and at the same time can greatly reduce the 45° viewing angle brightness, which is beneficial to improving the anti-peeping display effect.

[0057] Based on the above embodiments, continue to refer to Figure 3-Figure 6 The pixels in the pixel unit 30 of the embodiment of the present invention can be used as follows Figure 3 In the arrangement shown, i second pixels 32 are arranged along the first direction X, and i second pixels 32 and first pixels 31 are arranged along the second direction Y. The first direction X and the second direction Y intersect. The first direction X may be the lateral direction of the display panel 200, and the second direction Y may be the longitudinal direction of the display panel 200. The light shielding structure 51 includes a first sub-portion 51a and a second sub-portion 51b. In the same pixel unit 30, along the first direction X, the second pixels 32 include a first second pixel 321 and an i-th second pixel 32 i The orthographic projection of the first sub-portion 51a on the light emitting layer 40 is located at the first second pixel 321 away from the i-th second pixel 32 i The second sub-portion 51b is located at the i-th second pixel 32 i A side away from the first second pixel 321 .

[0058] For example, continue to refer to Figure 3-Figure 6 , taking i=2 as an example, the first sub-portion 51a is arranged on the side of the first second pixel 321 away from the second second pixel 322, on the optical path of the first second pixel 321 with a large viewing angle; the second sub-portion 51b is arranged on the side of the second second pixel 322 away from the second second pixel 322; i On the side away from the first second pixel 321, on the optical path of the wide viewing angle light of the second second pixel 322, the wide viewing angle light S+ emitted by the first second pixel 321 is blocked by the first subdivision 51a of the shading structure 51, and the wide viewing angle light S+ emitted by the second second pixel 322 is blocked by the second subdivision 51b of the shading structure 51, so that the wide viewing angle light S+ emitted by the first second pixel 321 is blocked by the second subdivision 51b of the shading structure 51, so that the wide viewing angle light S+ emitted by the second second pixel 322 can be realized along the Figure 5 and Figure 6 The first second pixel 321 and the second second pixel 322 emit a small viewing angle light S toward the positive viewing angle ( Figure 5 and Figure 6 The light is emitted in the middle Z direction, and the user can see the displayed image in the normal viewing direction. The embodiment of the present invention realizes the lateral anti-peeping effect of the display panel 200 by reasonably setting the light shielding structure 51 at the light emitting position of the second pixel 32.

[0059] Further research has found that in the above embodiment, the first filter structure 61 is set at the interval position of two adjacent second pixels 32, which can reduce the transmittance of large viewing angle light and increase the light output at the normal viewing angle. However, in some embodiments, the large viewing angle light cannot be completely blocked. For example, after adding the first filter structure 61, the transmittance of 45° viewing angle light can be less than <5%, but sometimes the transmittance of 45° viewing angle light needs to be <0.5%.

[0060] Based on this, the embodiment of the present invention may further add a light shielding structure in the first light filtering structure 61 to further reduce the transmittance of light at a large angle. Figure 7 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, Figure 8 yes Figure 7 A schematic cross-sectional view of a display panel along the BB' direction, Fig. 9 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, Fig.10 yes Fig. 9 A schematic cross-sectional view of a display panel along the CC' direction, Fig.11 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, Fig.12 yes Fig. 9 A schematic cross-sectional view of a display panel along the DD' direction, specifically:

[0061] In some embodiments, reference Figure 7 and Figure 8The light shielding structure 51 includes at least one third sub-section 51c, and at least one third sub-section 51c is disposed in the first light filtering structure 61. With such a design, the third sub-section 51c of the light shielding structure 51 can further block the light of a large viewing angle, so as to further reduce the transmittance of the light of a large angle and improve the anti-peeping effect.

[0062] Specifically, refer to Figure 7 and Figure 8 In the same pixel unit 30, the second pixel 32 includes the adjacent j-th second pixel 32 j and the j+1th second pixel 32 j+1 , 1≤j≤j+1≤i, j is an integer. In the embodiment of the present invention, j=1 is taken as an example.

[0063] In some embodiments, continue to refer to Figure 8 The third subdivision 51c is one, and the positive projection of the third subdivision 51c on the light emitting layer 40 is parallel to the j-th second pixel 32 j The distance L1 between the third sub-portion 51c and the orthographic projection of the light emitting layer 40 and the j+1 second pixel 32 j+1 The distance L2 between them is the same. Specifically, in the embodiment of the present invention, the pixel unit 30 is divided into one first pixel 31 and two second pixels 32, and the third subdivision 51c of the light shielding structure 51 is arranged in the middle of the first filter structure 61, that is, L1=L2. The third subdivision 51c can absorb or block the same large viewing angle light emitted by the first second pixel 321 and the second second pixel 322, and transmit the same small viewing angle light, and the brightness enhancement effect on the first second pixel 321 and the second second pixel 322 is the same.

[0064] In some embodiments, reference Fig. 9 and Fig.10 There are multiple third sub-portions 51c, and the multiple third sub-portions 51c are distributed in the first filter structure 61 at intervals and close to the j-th second pixel 32 j The orthographic projection of the third subdivision 51c on the light emitting layer 40 is aligned with the j-th second pixel 32 j The distance L3 between the second pixel 32 and the j+1th pixel 32 j+1 The orthographic projection of the third sub-portion 51c on the light emitting layer 40 is parallel to the j+1th second pixel 32 j+1 In the embodiment of the present invention, two third sub-sections 51c are distributed in the first filter structure 61 at intervals. It can also be understood that when two third sub-sections 51c are provided in the first filter structure 61, the two third sub-sections 51c are respectively connected to the first second pixel 321 and the second second pixel 322 at Fig.10The distance in the first direction X is the same, that is, L3 = L4. The two third subdivisions 51c can absorb or block the same large viewing angle light emitted by the first second pixel 321 and the second second pixel 322, and transmit the same small viewing angle light, so that the brightness enhancement effect on the first second pixel 321 and the second second pixel 322 is the same.

[0065] Furthermore, three or more third sub-sections 51 c may be provided in the first filter structure 61 , and the plurality of third sub-sections 51 c may be distributed at equal intervals, so as to achieve the purpose of achieving the same brightness enhancement effect on the first second pixel 321 and the second second pixel 322 .

[0066] In some embodiments, reference Fig.11 and Fig.12 , the shading structure 51 includes two fourth sub-parts 51d, and the two fourth sub-parts 51d are respectively located on one side of the first filter structure 61 close to the second pixel 32. It can also be understood that the two fourth sub-parts 51d of the shading structure 51 are respectively arranged at the two ends of the first filter structure 61 close to the second pixel 32, so that the light output angle of the second pixel 32 can be limited, ensuring that the display panel 200 is Fig.11 and Fig.12 The first filter structure 61 can be used to prevent peeping in the first direction X, and at the same time, the first filter structure 61 can be used to absorb light with a large viewing angle and transmit a certain amount of light with a small viewing angle, thereby improving the overall display brightness of the i second pixels 32.

[0067] In some embodiments, continue to refer to Figure 6 , Figure 8 , Fig.10 and Fig.12 The dimming layer 60 further includes a first dimming structure 62 and a second dimming structure 63. The orthographic projection of the second dimming structure 63 on the light emitting layer 40 covers the second pixel 32, and the first dimming structure 62 covers the second dimming structure 63. The refractive index of the second dimming structure 63 is greater than that of the first dimming structure 62.

[0068] Specifically, Figure 6 For example, the first dimming structure 62 and the second dimming structure 63 are made of transparent materials, and the two form a micro lens pattern (Micro Lens Pattern, MLP) structure, which has the effect of deflecting the light emitted by the second pixel 32 toward the normal viewing angle. Specifically, the embodiment of the present invention utilizes the optical refraction principle of light entering a low refractive index material from a high refractive index material, and at the interface of the first dimming structure 62 and the second dimming structure 63, the small viewing angle light S0 emitted by the second pixel 32 is deflected toward the normal viewing angle, thereby further improving the brightness of the light emitted by the second pixel 32 at the normal viewing angle.

[0069] Based on the above embodiments, continue to refer to Figure 6, the surface of the second dimming structure 63 facing the shading structure 51 is an inclined surface or a curved surface, and the bottom angle is an acute angle β. Specifically, the surface of the second dimming structure 63 facing the shading structure 51 is a refractive surface, and the light emitted by the second pixel 32 is deflected toward the normal viewing angle on the surface, further improving the normal viewing angle brightness. In some embodiments, β can range from 30° to 75°.

[0070] It should be noted that the second dimming structure 63 can be prepared by a “patterning” process. The “patterning” herein specifically refers to a non-whole-layer structure, that is, a structure in which a whole layer of material is first formed and then a specific shape is engraved during the manufacturing process.

[0071] Based on the above embodiments, continue to refer to Figure 6 , Figure 8 , Fig.10 and Fig.12 , the light shielding layer 50 is a two-layer light shielding film, and the two layers of light shielding films are respectively located on the side of the first dimming structure 62 close to the light-emitting layer 40 and the side of the first dimming structure 62 away from the light-emitting layer 40. Specifically, considering the existing process design, the light shielding layer 50 can be designed as two layers of light shielding films to reduce the thickness of each layer of light shielding film and reduce the difficulty of the preparation process. The first light shielding film 50a is arranged on the side of the first dimming structure 62 close to the light-emitting layer 40, and the second light shielding film 50b is arranged on the side of the first dimming structure 62 away from the light-emitting layer 40. In this way, the wide-angle light can be absorbed multiple times in the area between the first light shielding film and the second light shielding film, thereby reducing the brightness of the wide-angle light.

[0072] When the display panel is in the anti-peeping state, the second pixel 32 is turned on. If the first pixel 31 is turned on (sneak-lit), it will affect the brightness of the anti-peeping pixel at a large viewing angle. On the basis of the above embodiment, the embodiment of the present invention can also add a pixel opening at the interval between the first pixel 31 and the second pixel 32, and set a filter structure on the pixel opening to absorb the light at a large viewing angle, so as to reduce the influence of the sneak-lit interval between the first pixel 31 and the second pixel 32 on the brightness of the anti-peeping pixel at a large viewing angle. Specifically:

[0073] Fig.13 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, Fig.14 yes Fig.13 A schematic cross-sectional view of a display panel along the EE' direction, referring to Fig.13 and Fig.14 The pixel unit 30 further includes a third pixel 33, and the third pixel 33 is located between the second pixel 32 and the first pixel 31. The working mode of the display panel 200 includes a first mode and a second mode. The first mode may be an anti-peeping state, and the second mode may be a sharing state.

[0074] In the first mode, the first pixel 31 is turned off, the second pixel 32 is turned on, and the third pixel 33 is turned off. Specifically, in the anti-peeping state, only the second pixel 32 is turned on, and the first filter structure 61 is used to absorb the large-angle light emitted by the second pixel 32 to increase the positive-angle light output.

[0075] Furthermore, considering the situation that the interval position between the first pixel 31 and the second pixel 32 is bright, the dimming layer 60 further includes a second filter structure 64, and the positive projection of the second filter structure 64 on the light-emitting layer 40 covers the third pixel 33. When the interval position is bright, the second filter structure 64 is used to absorb the light at the interval position between the first pixel 31 and the second pixel 32, thereby reducing the influence of this part on the brightness of the viewing angle of the anti-peeping pixel.

[0076] In the second mode, the first pixel 31 is turned on, the second pixel 32 is turned off, and the third pixel 33 is turned on. Specifically, when the ambient light is relatively dark, such as at night, the first pixel 31 and the third pixel 33 are turned on at the same time, and the third pixel 33 can play a role in supplementing the brightness of the first pixel 31. At the same time, the second filter structure 64 transmits the positive viewing angle light emitted by the third pixel 33 and absorbs the large viewing angle light, which is beneficial to improve the mixing effect of the third pixel 33 and the first pixel 31, and enhance the display effect of the shared state. This is also beneficial to reduce the driving current of the first pixel 31 and increase the life of the first pixel 31.

[0077] On the basis of the above embodiment, in the second mode, the display brightness of the third pixel 33 is less than the display brightness of the first pixel 31. Specifically, the display brightness of the first pixel 31 is mainly used, and the display of the third pixel 33 is supplemented to ensure the display effect of the display panel in the second mode.

[0078] On the basis of the above embodiment, continue to refer to Figure 6 , Figure 8 , Fig.10 , Fig.12 , Fig.14 , the display panel 200 also includes a driving circuit layer 70, the driving circuit layer 70 is located between the base substrate 20 and the light-emitting layer 40, and the driving circuit layer 70 includes a first pixel circuit, a second pixel circuit and a third pixel circuit (all shown in the figure). The structure of the pixel circuit is not repeated here. The first pixel circuit is electrically connected to the first pixel 31, and a driving voltage is provided to the first pixel 31 alone to control the display brightness of the first pixel 31. The second pixel circuit is electrically connected to the second pixel 32, and a driving voltage is provided to the second pixel 32 alone to control the display brightness of the second pixel 32. The third pixel circuit is electrically connected to the third pixel 33, and a driving voltage is provided to the third pixel 33 alone to control the display brightness of the third pixel 33. Thereby at least the first mode and the second mode are provided in the embodiment of the present invention.

[0079] In other embodiments, the first pixel circuit, the second pixel circuit and the third pixel circuit may also control the first pixel 31, the second pixel 32 and the third pixel 33 to light up at the same time to meet the high brightness display requirement.

[0080] Based on the above embodiments, Figure 3 , Figure 5 , Figure 7 , Fig. 9 , Fig.13 In the same pixel unit 30 , along the first direction X in the figure, the length a of the second pixel 32 is smaller than the distance b between two adjacent second pixels 32 .

[0081] Specifically, Figure 3 and Figure 5 For example, according to the film structure design of the existing display panel, with the IJP thickness of 17 microns, when the opening size of the second pixel 32 is 10 microns, the shading structure 51 has a shielding effect on the light in the viewing angle range of 45° and above. In the embodiment of the present invention, in combination with the opening size a of the second pixel 32, in order to avoid light leakage between two adjacent second pixels 32, Figure 5 In the first direction X, the length a of the second pixel 32 is set to be smaller than the distance b between two adjacent second pixels 32 in the segment position, so as to reduce the light leakage at the segment position with a large viewing angle, thereby facilitating the improvement of the anti-peeping effect of the display panel 200 in the first direction X. For example, when a=10 microns, b≥15 microns.

[0082] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Fig.15 A schematic diagram of the structure of a display device provided by an embodiment of the present invention. Fig.15 As shown, the display device 300 includes any display panel 200 provided in the above embodiments. Therefore, the display device 300 also has the beneficial effects of the display panel 200 in the above embodiments. The similarities can be understood by referring to the above explanation of the display panel 200, which will not be repeated below.

[0083] The display device 300 provided in the embodiment of the present invention can be Fig.15 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0084] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of pixel units, located on one side of the substrate, the pixel unit comprising a first pixel and i second pixels; i≥2, i is an integer; A light-emitting layer is located on one side of the substrate; a light shielding layer, located on a side of the light emitting layer away from the base substrate, comprising a plurality of light shielding structures, wherein the orthographic projection of the light shielding structure on the light emitting layer at least partially surrounds the second pixel; The dimming layer is located at a side of the light-emitting layer away from the base substrate; the dimming layer comprises a first filter structure, and the orthographic projection of the first filter structure on the light-emitting layer is located between two adjacent second pixels.

2. The display panel according to claim 1, characterized in that: The first filter structure includes a filter film or photosynthetic glue.

3. The display panel according to claim 1, characterized in that: The i second pixels are arranged along a first direction, and the i second pixels and the first pixel are arranged along a second direction; the first direction intersects with the second direction; the light shielding structure includes a first subsection and a second subsection; In the same pixel unit, along the first direction, the second pixel includes a first second pixel and an i-th second pixel, the orthographic projection of the first portion on the light-emitting layer is located on the side of the first second pixel away from the i-th second pixel, and the second portion is located on the side of the i-th second pixel away from the first second pixel.

4. The display panel according to claim 1, characterized in that: The light-shielding structure includes at least one third sub-section, and the at least one third sub-section is arranged in the first light-filtering structure.

5. The display panel according to claim 4, characterized in that: In the same pixel unit, the second pixel includes the adjacent j-th second pixel and the j+1-th second pixel, 1≤j≤j+1≤i, and j is an integer; The third subdivision is one, and the distance between the orthogonal projection of the third subdivision on the light-emitting layer and the j-th second pixel is the same as the distance between the orthogonal projection of the third subdivision on the light-emitting layer and the j+1-th second pixel; or There are multiple third divisions, and the multiple third divisions are distributed at intervals in the first filtering structure, and the distance between the orthographic projection of the third division close to the j-th second pixel and the j-th second pixel is the same as the distance between the orthographic projection of the third division close to the j+1-th second pixel and the j+1-th second pixel.

6. The display panel according to claim 1, characterized in that: The light shielding structure includes two fourth sub-parts, and the two fourth sub-parts are respectively located at one side of the first light filtering structure close to the second pixel.

7. The display panel according to claim 1, characterized in that: The dimming layer further includes a first dimming structure and a second dimming structure. The orthographic projection of the second dimming structure on the light-emitting layer covers the second pixel, and the first dimming structure covers the second dimming structure; and the refractive index of the second dimming structure is greater than the refractive index of the first dimming structure.

8. The display panel according to claim 7, characterized in that: The surface of the second dimming structure facing the light shielding structure is an inclined surface or a curved surface, and the bottom angle is an acute angle.

9. The display panel according to claim 7, characterized in that: The light-shielding layer is two layers of light-shielding films, and the two layers of light-shielding films are respectively located on a side of the first dimming structure close to the light-emitting layer and a side of the first dimming structure far from the light-emitting layer.

10. The display panel according to any one of claims 1 to 9, characterized in that: The pixel unit further includes a third pixel, and the third pixel is located between the second pixel and the first pixel; the operation mode of the display panel includes a first mode and a second mode; In the first mode, the first pixel is turned off, the second pixel is turned on, and the third pixel is turned off; in the second mode, the first pixel is turned on, the second pixel is turned off, and the third pixel is turned on.

11. The display panel according to claim 10, characterized in that: The dimming layer further includes a second filter structure, and the second filter structure covers the third pixel in the orthographic projection of the light-emitting layer.

12. The display panel according to claim 10, characterized in that: In the second mode, a display brightness of the third pixel is smaller than a display brightness of the first pixel.

13. The display panel according to claim 10, characterized in that: It also includes a driving circuit layer, the driving circuit layer is located between the base substrate and the light-emitting layer, and the driving circuit layer includes a first pixel circuit, a second pixel circuit and a third pixel circuit; The first pixel circuit is electrically connected to the first pixel, the second pixel circuit is electrically connected to the second pixel, and the third pixel circuit is electrically connected to the third pixel.

14. The display panel according to claim 3, characterized in that: In the same pixel unit, Along the first direction, the length of the second pixel is smaller than the distance between two adjacent second pixels.

15. A display device, characterized in that: A display panel comprising any one of claims 1-14.

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