Display panel and display device

Abstract

The application provides a display panel and a display device. At a first pixel unit region, the setting of the orthographic projection of the first light shielding part on the substrate covering the orthographic projection of at least one via hole on the substrate can not only shield the light emitted by the adjacent light emitting element and reflected by the via hole through the first light shielding part, but also shield the light emitted by the light emitting element at the first pixel unit region to the via hole through the first light shielding part, so as to avoid the light reflected by the via hole at the first pixel unit region to the adjacent pixel unit region, thereby achieving the purpose of improving the light crosstalk between the adjacent light emitting elements and ensuring the high display effect of the display device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, more particularly, to a display panel and a display device. BACKGROUND

[0002] Micro-LED display panel has been paid more and more attention due to its higher display brightness, better light emitting efficiency and lower power consumption. However, in the existing display panel, the light rays of adjacent micro-LEDs appear mutual crosstalk, which affects the display effect of the display device. SUMMARY

[0003] Therefore, the present application provides a display panel and a display device, which effectively solve the technical problems in the prior art, improve the light crosstalk between adjacent light emitting elements, and ensure the high display effect of the display device.

[0004] To achieve the above object, the technical scheme provided by the present application is as follows:

[0005] A display panel, comprising a first substrate and a second substrate arranged oppositely, and the display panel comprises a plurality of pixel unit regions;

[0006] At the pixel unit region, the second substrate comprises a substrate, a light emitting element located on the side of the substrate facing the first substrate, and a driving circuit layer located between the light emitting element and the substrate; wherein the light emitting element is used to generate first color light, and the pixel unit region comprises a first pixel unit region for generating the first color light, and the driving circuit layer comprises a plurality of vias;

[0007] At the first pixel unit region, the display panel comprises at least one first light shielding portion located on the side of the via away from the substrate, and the first light shielding portion has a first light shielding orthographic projection on the substrate, covering the via orthographic projection of at least one via on the substrate.

[0008] Correspondingly, the present application also provides a display device comprising the above-mentioned display panel.

[0009] Compared with the prior art, the technical scheme provided by the present application has at least the following advantages:

[0010] The present invention provides a display panel and a display device, comprising a first substrate and a second substrate disposed opposite to each other, wherein the display panel includes a plurality of pixel unit regions; at the pixel unit regions, the second substrate includes a substrate, a light-emitting element located on the side of the substrate facing the first substrate, and a driving circuit layer located between the light-emitting element and the substrate; wherein the light-emitting element is used to generate a first color light, and the pixel unit regions include a first pixel unit region for generating the first color light, and the driving circuit layer includes a plurality of vias; at the first pixel unit regions, the display panel includes at least one first light-shielding portion located on the side of the vias facing away from the substrate, and a first light-shielding orthographic projection of the first light-shielding portion on the substrate covers the orthographic projection of at least one of the vias on the substrate.

[0011] As can be seen from the above, the technical solution provided by the present invention, in the first pixel unit area, covers the orthogonal projection of at least one via on the substrate by the orthogonal projection of the first light-shielding part on the substrate. This not only blocks the light emitted from the adjacent light-emitting element reflected by the via through the first light-shielding part, but also blocks the light emitted from the light-emitting element in the first pixel unit area to the via through the first light-shielding part, so as to avoid the light reflected by the via in the first pixel unit area to the adjacent pixel unit area. This achieves the purpose of improving the problem of light crosstalk between adjacent light-emitting elements and ensuring high display effect of the display device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0014] Figure 2 for Figure 1 Cross-sectional view along the AA' direction;

[0015] Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0016] Figure 4 for Figure 3 Cross-sectional view along the BB' direction;

[0017] Figure 5 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present invention;

[0018] Figure 6 For Figure 3 sectional view in the direction of CC';

[0019] Figure 7 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0020] Figure 8 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0021] Figure 9 For Figure 8 sectional view in the direction of DD';

[0022] Figure 10 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0023] Figure 11 For Figure 10 sectional view in the direction of EE';

[0024] Figure 12 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0025] Figure 13 For Figure 12 sectional view in the direction of FF';

[0026] Figure 14 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0027] Figure 15 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0028] Figure 16 For Figure 15 sectional view in the direction of GG';

[0029] Figure 17 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0030] Figure 18 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0031] Figure 19 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0032] Figure 20 For another structure schematic view of the display panel provided by the embodiment of the present application;

[0033] Figure 21A structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 1.

[0034] Figure 22 A structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 1.

[0035] Figure 23 For Figure 22 A sectional view in the HH' direction.

[0036] Figure 24 A structure schematic diagram of a display device provided by an embodiment of the present application is shown in FIG. 1. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] As described in the background, the micro light emitting diode display panel includes a plurality of micro light emitting diodes fixed on a substrate, wherein the substrate includes a driving circuit layer for the micro light emitting diodes to pass through driving signals, and the driving circuit layer includes a plurality of vias. In order to prevent the light beams of adjacent micro light emitting diodes from crosstalk, a barrier wall layer is usually arranged around the micro light emitting diodes. However, the inventors find that, since the vias can reflect light, the light emitted by any one of the micro light emitting diodes can be reflected to the region where the other micro light emitting diode is located through the via, so that the light beams between adjacent pixel units crosstalk with each other, affecting the display effect of the display device.

[0039] Based on this, the embodiments of the present application provide a display panel and a display device, which effectively solve the technical problems existing in the prior art, improve the problem of light crosstalk between adjacent light emitting elements, and ensure the high display effect of the display device.

[0040] To achieve the above object, the technical solutions provided by the embodiments of the present application are as follows, which are specifically combined with Figures 1 to 24 The technical solutions provided by the embodiments of the present application are described in detail.

[0041] Combined with Figure 1 And Figure 2 As shown in FIG. 1, Figure 1 A structure schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 1, Figure 2 For Figure 1FIG. 6 is a sectional view along the direction of AA' of the display panel. In the embodiment, the display panel comprises a first substrate 100 and a second substrate 200 arranged oppositely, and the display panel comprises a plurality of pixel unit regions Pi.

[0042] At the pixel unit region Pi, the second substrate 200 comprises a base 210, a light emitting element 300 located on a side of the base 210 facing the first substrate 100, and a driving circuit layer 220 located between the light emitting element 300 and the base 210; the light emitting element 300 is configured to generate light of a first color, and the pixel unit region Pi comprises a first pixel unit region Pi1 configured to generate light of the first color, and the driving circuit layer 220 comprises a plurality of vias 221.

[0043] At the first pixel unit region Pi1, the display panel comprises at least one first light shielding portion 410 located on a side of the via 221 facing away from the base 210, and a first light shielding orthographic projection 410' of the first light shielding portion 410 on the base 210 covers a via orthographic projection 221' of at least one of the vias 221 on the base 210.

[0044] It can be understood that the via 221 is a structure for connecting different circuit layers by punching and metallizing the isolation structure between the circuit layers, which can reflect the light emitted by the light emitting element 300, thereby causing light crosstalk between adjacent pixel unit regions Pi. For example, when the display device displays a picture, and the first pixel unit region Pi1 does not emit light, while other pixel unit regions Pi emit light, the light emitted by the light emitting element 300 in the other pixel unit regions Pi can irradiate the via 221 in the first pixel unit region Pi1, and the via 221 reflects the light to the first pixel unit region Pi1, causing a bright spot of light of the first color in the first pixel unit region Pi1, which degrades the display effect of the display device.

[0045] The technical scheme provided by the embodiment of the present application, by arranging the first light shielding part 410 to cover the projection of the at least one via hole 221 on the substrate 210, the light emitted by the adjacent light emitting element 300 reflected by the via hole 221 can be blocked by the first light shielding part 410, and the light emitted by the light emitting element 300 in the first pixel unit region Pi1 can also be blocked by the first light shielding part 410 to avoid the light reflected by the via hole 221 in the first pixel unit region Pi1 to the adjacent pixel unit region Pi, avoid the light emitted by the adjacent light emitting element 300 to affect the light emitted in the first pixel unit region Pi1, and avoid the light emitted by the light emitting element 300 in the first pixel unit region Pi1 to affect the light emitted in the adjacent pixel unit region Pi, thereby achieving the purpose of improving the light crosstalk between the adjacent light emitting elements, and ensuring the display effect of the display device.

[0046] As shown in Figure 2 , the dashed arrow shown in Figure 2 represents the light emitted by the light emitting element 300. On the one hand, in the first pixel unit region Pi1, the light emitted by the light emitting element 300 can be blocked by the first light shielding part 410, avoiding the light emitted by the light emitting element 300 to be emitted to the via hole 221 and then reflected to the adjacent pixel unit region Pi, thereby affecting the light emitted in the adjacent pixel unit region Pi. On the other hand, in the pixel unit region Pi adjacent to the first pixel unit region Pi1, the light emitted by the light emitting element 300 can enter the via hole 221 in the first pixel unit region Pi1, but since the first light shielding part 410 can block the reflected light of the via hole 221, the light reflected by the via hole 221 in the first pixel unit region Pi1 cannot affect the light emitted in the first pixel unit region Pi1, thereby improving the light crosstalk between the adjacent light emitting elements.

[0047] In an embodiment of the present application, the display panel provided by the present application includes a pixel unit region for generating light of other colors, such as a second pixel unit region for generating light of a second color, wherein the light of the second color is obtained by converting the light of a first color generated by a light emitting element. The via hole of the second pixel unit region can also be blocked by the light shielding structure to avoid affecting the light emitted in this region. Specifically, as shown in Figure 3 and Figure 4 , as shown in Figure 3 , which is another structure schematic view of the display panel provided by the embodiment of the present application, Figure 4 is Figure 3 a sectional view in the direction of BB'. The pixel unit region Pi includes a second pixel unit region Pi2 for generating light of a second color.

[0048] At the second pixel unit region Pi2, the display panel comprises at least one second light shielding part 420 located on the side of the via hole 221 away from the substrate 210, and the second light shielding part 420 has a second light shielding orthographic projection 420' on the substrate 210, covering the via hole orthographic projection 221' of at least one via hole 221 on the substrate 210.

[0049] The technical scheme provided by the embodiment of the present application, at the first pixel unit region Pi1, the orthographic projection of the first light shielding part 410 on the substrate 210 covers the orthographic projection of at least one via hole 221 on the substrate 210, and then the first light shielding part 410 can shield the light emitted by the adjacent light emitting element 300 reflected by the via hole 221, avoiding the light emitted by the adjacent light emitting element 300 affecting the light emission at the first pixel unit region Pi1.

[0050] And, at the second pixel unit region Pi2, the orthographic projection of the second light shielding part 420 on the substrate 210 covers the orthographic projection of at least one via hole 221 on the substrate 210, and then the second light shielding part 420 can shield the light emitted by the adjacent light emitting element 300 reflected by the via hole 221, avoiding the light emitted by the adjacent light emitting element 300 affecting the light emission at the second pixel unit region Pi2, thereby achieving the purpose of improving the problem of light crosstalk between adjacent light emitting elements, and ensuring the display effect of the display device.

[0051] In an embodiment of the present application, the second color light generated by the second pixel unit region provided by the embodiment of the present application is converted from the first color light, so that at the second pixel unit region, the first color light reflected by the via hole needs to be converted into the second color light before being emitted. Therefore, compared with the case that the first color light does not need to be converted at the first pixel unit region, the number of second light shielding parts for shielding the via hole at the second pixel unit region can be relatively small, and / or the number of second light shielding parts for shielding the same via hole can be relatively small. Figure 5 And Figure 6 As shown in the following Figure 5 is another structure diagram of a display panel provided by the embodiment of the present application, Figure 6 is Figure 5A sectional view in the direction of CC' is shown. The number of via hole orthographic projections 221' covered by the first light-shielding orthographic projection 410' at the first pixel unit region Pi1 is greater than the number of via hole orthographic projections 221' covered by the second light-shielding orthographic projection 420' at the second pixel unit region Pi2. That is, in the case where the number of first pixel unit regions Pi1 and the number of second pixel unit regions Pi2 are the same and the number of all via holes 221 is the same, the number of via holes 221 at all second pixel unit regions Pi2 that are shielded by the second light-shielding portion 420 is less than the number of via holes 221 at all first pixel unit regions Pi1 that are shielded by the first light-shielding portion 410. The present embodiment does not specifically limit the position and specific number of via holes 221 that are shielded at each first pixel unit region Pi1 and each second pixel unit region Pi2.

[0052] and / or, as shown in Figure 7 Fig. 6 is a structural schematic diagram of another display panel provided by the present embodiment, wherein the number of first light-shielding orthographic projections 410' covering the same via hole orthographic projection 221' at the first pixel unit region Pi1 is greater than the number of second light-shielding orthographic projections 420' covering the same via hole orthographic projection 221' at the second pixel unit region Pi2. That is, the same via hole 221 at a first pixel unit region Pi1 can be covered by multiple first light-shielding portions 410, and the same via hole 221 at the second pixel unit region Pi2 can be covered by one or fewer second light-shielding portions 420 compared to the first pixel unit region Pi1, thereby being able to improve the light-shielding effect at the first pixel unit region Pi1 and ensure that the display effect of the display panel is high.

[0053] In combination with Figure 8 and Figure 9 shown, Figure 8 Fig. 6 is a structural schematic diagram of another display panel provided by the present embodiment, Figure 9 Fig. 6 is a structural schematic diagram of another display panel provided by the present embodiment, Figure 8 A sectional view in the direction of DD' is shown. At least one of the first light-shielding portion 410 and the second light-shielding portion 420 is the same first multiplexed light-shielding portion 401. The orthographic projection 401' of the first multiplexed light-shielding portion 401 on the substrate 210 covers a greater number of via hole orthographic projections 221' at the first pixel unit region Pi1 than at the second pixel unit region Pi2. Since the second pixel unit region Pi2 needs to convert first color light into second color light before outputting, the requirement for light-shielding of the via hole 221 is lower than that of the first pixel unit region Pi1 that directly outputs first color light, and thus the present embodiment designs the first multiplexed light-shielding portion 401 to preferentially cover the via hole 221 at the first pixel unit region Pi1, thereby being able to ensure that the display effect of the display device is high.

[0054] In an embodiment of the present application, the display panel provided by the present application includes a pixel unit region for generating light of other colors, such as a pixel unit region including a second pixel unit region for generating light of a second color, wherein the light of the second color is obtained by converting light of a first color generated by a light emitting element; and the pixel unit region further includes a third pixel unit region for generating light of a third color, wherein the light of the third color is obtained by converting light of the first color generated by the light emitting element. The via hole of the third pixel unit region can also be shielded by the light shielding structure to avoid affecting the light emission of the region. Details are shown in Figure 10 and Figure 11 Figure 10 is a structural schematic diagram of another display panel provided by an embodiment of the present application, Figure 11 is Figure 10 a cross-sectional view in the EE' direction. The pixel unit region Pi includes a third pixel unit region Pi3 for generating light of a third color.

[0055] At the third pixel unit region Pi3, the display panel includes at least one third light shielding portion 430 located on a side of the via hole 221 away from the substrate 210, and a third light shielding orthographic projection 430' of the third light shielding portion 430 on the substrate 210 covers a via hole orthographic projection 221' of at least one via hole 221 on the substrate 210.

[0056] The technical solution provided by the embodiment of the present application can cover the orthographic projection of at least one via hole 221 on the substrate 210 by the orthographic projection of the first light shielding portion 410 on the substrate 210 in the first pixel unit region Pi1, and then the first light shielding portion 410 can shield the light emitted by the adjacent light emitting element 300 reflected by the via hole 221, thereby avoiding the influence of the light emission of the adjacent light emitting element 300 on the light emission at the first pixel unit region Pi1.

[0057] In addition, the orthographic projection of at least one via hole 221 on the substrate 210 can be covered by the orthographic projection of the second light shielding portion 420 on the substrate 210 in the second pixel unit region Pi2, and then the second light shielding portion 420 can shield the light emitted by the adjacent light emitting element 300 reflected by the via hole 221, thereby avoiding the influence of the light emission of the adjacent light emitting element 300 on the light emission at the second pixel unit region Pi2.

[0058] ​In addition, in the third pixel unit region Pi3, the third light shielding part 430 is arranged to cover the projection of at least one via hole 221 on the substrate 210, so that the light emitted by the adjacent light emitting element 300 reflected by the via hole 221 can be shielded by the third light shielding part 430, and the light emitted by the adjacent light emitting element 300 will not affect the light emitted by the third pixel unit region Pi3. Thus, the problem of light crosstalk between adjacent light emitting elements is solved, and the display effect of the display device is improved.

[0059] In an embodiment of the present application, the third color light generated by the third pixel unit region is converted from the first color light, so that the first color light reflected by the via hole needs to be converted into the third color light before being emitted. Therefore, compared with the case that the first color light does not need to be converted in the first pixel unit region, the number of third light shielding parts for shielding the via hole in the third pixel unit region can be relatively small, and / or the number of third light shielding parts for shielding the same via hole can be relatively small. In combination with the above-mentioned Figure 12 and Figure 13 , Figure 12 is another structure diagram of the display panel provided by the embodiment of the present application, Figure 13 is Figure 12 is a cross-sectional view in the direction of FF’ in FIG. 6. In the first pixel unit region Pi1, the number of via hole projections 221’ covered by the first light shielding projection 410’ is greater than the number of via hole projections 221’ covered by the third light shielding projection 430’ in the third pixel unit region Pi3. That is, in the case that the number of first pixel unit regions Pi1 and the number of third pixel unit regions Pi3 are the same, and the number of via holes 221 is the same, the number of via holes 221 in the third pixel unit region Pi3 shielded by the third light shielding part 430 is less than the number of via holes 221 in the first pixel unit region Pi1 shielded by the first light shielding part 410. The position and the specific number of the via holes 221 shielded by the first light shielding part 410 and the third light shielding part 430 in each first pixel unit region Pi1 and each third pixel unit region Pi3 are not limited in the embodiment of the present application.

[0060] and / or, as Figure 14As shown in FIG. 6, the number of the first light-shielding positive projections 410' covering the same via positive projection 221' at the first pixel unit region Pi is greater than the number of the third light-shielding positive projections 430' covering the same via positive projection 221' at the third pixel unit region Pi3. That is, the same via 221 at a first pixel unit region Pi1 can be covered by a plurality of first light-shielding portions 410, and the same via 221 at the third pixel unit region Pi3 can be covered by one or fewer third light-shielding portions 430 compared with the first pixel unit region Pi1, thereby being capable of improving the light-shielding effect at the first pixel unit region Pi1 and ensuring the display effect of the display panel.

[0061] In an embodiment of the present application, the light-emitting element 300 at the second pixel unit region Pi2 has a light-emitting conversion efficiency less than the light-emitting element 300 at the third pixel unit region Pi3. That is, the conversion efficiency of the first color light at the second pixel unit region Pi2 is less than the conversion efficiency of the first color light at the third pixel unit region Pi3. Since the conversion efficiency of the first color light at the third pixel unit region Pi3 is higher than that at the second pixel unit region Pi2, the third pixel unit region Pi3 has a greater light-shielding requirement for the via 221. In combination with the above-mentioned embodiment, the third light-shielding portion 430 at the third pixel unit region Pi3 can be arranged to cover the via 221 at the third pixel unit region Pi3. Figure 12 and Figure 13 As shown in FIG. 6, the number of the third light-shielding positive projections 430' covering the same via positive projection 221' at the third pixel unit region Pi3 is greater than the number of the second light-shielding positive projections 420' covering the same via positive projection 221' at the second pixel unit region Pi2. That is, in the case that the number of the second pixel unit region Pi2 and the third pixel unit region Pi3 is the same and the number of all the vias 221 is the same, the number of the vias 221 at all the second pixel unit regions Pi2 covered by the second light-shielding portions 420 is less than the number of the vias 221 at all the third pixel unit regions Pi3 covered by the third light-shielding portions 430. The embodiment of the present application does not make specific limitations on the positions and specific numbers of the vias 221 covered at each third pixel unit region Pi3 and each second pixel unit region Pi2.

[0062] and / or, as Figure 14As shown, the number of third light-shielding projections 430' of the third pixel unit region Pi3 covering the same via hole orthographic projection 221' is greater than the number of second light-shielding projections 420' of the second pixel unit region Pi2 covering the same via hole orthographic projection 221'. That is, the same via hole 221 at a third pixel unit region Pi3 can be covered by multiple third light-shielding portions 430, and the same via hole 221 at the second pixel unit region Pi2 can be covered by one or fewer second light-shielding portions 420 compared to the third pixel unit region Pi3, thereby being capable of improving the light-shielding effect at the third pixel unit region Pi3 and ensuring a high display effect of the display panel.

[0063] In combination Figure 15 And Figure 16 As shown, Figure 15 A structure schematic diagram of another display panel provided by an embodiment of the present application is shown in FIG. 6. Figure 16 As Figure 15 A cross-sectional view in the GG' direction is shown in FIG. 6. Among them, at least one first light-shielding portion 410 and the third light-shielding portion 430 are the same second multiplexed light-shielding portion 402, and the orthographic projection 402' of the second multiplexed light-shielding portion 402 on the substrate 210 covers a number of via hole orthographic projections 221' of the first pixel unit region Pi1, which is greater than a number of via hole orthographic projections 221' of the third pixel unit region Pi3. Since the third pixel unit region Pi3 needs to convert the first color light into the third color light and then output, the requirement for light-shielding of the via hole 221 of the third pixel unit region Pi3 is lower than that of the first pixel unit region Pi1 which directly outputs the first color light, and therefore, the second multiplexed light-shielding portion 402 is designed to preferentially cover the via hole 221 at the first pixel unit region Pi1, thereby being capable of ensuring a high display effect of the display device.

[0064] And / or, as Figure 15 And Figure 16 As shown, at least one second light-shielding portion 420 and the third light-shielding portion 430 are the same third multiplexed light-shielding portion 403, and the orthographic projection 403' of the third multiplexed light-shielding portion 403 on the substrate 210 covers a number of via hole orthographic projections 221' of the second pixel unit region Pi2, which is less than a number of via hole orthographic projections 221' of the third pixel unit region Pi3. Since the conversion efficiency of the second pixel unit region Pi2 for converting the first color light into the second color light is lower than the conversion efficiency of the third pixel unit region Pi3 for converting the first color light into the third color light, the requirement for light-shielding of the via hole 221 of the second pixel unit region Pi2 is lower, and therefore, the third multiplexed light-shielding portion 403 is designed to preferentially cover the via hole 221 at the third pixel unit region Pi3, thereby being capable of ensuring a high display effect of the display device.

[0065] In an embodiment of the present application, the first color light can be blue light, the second color light can be red light, and the third color light can be green light. That is, all the light emitting elements of the display panel generate blue light, the first pixel unit region can directly output the blue light generated by the light emitting elements, the second pixel unit region outputs the blue light after converting the blue light into red light, and the third pixel unit region outputs the blue light after converting the blue light into green light. The embodiment of the present application can convert the blue light through the quantum dot conversion layer, and can also filter the light through the color resistance layer to improve the color purity of the light.

[0066] It can be understood that, when the existing display device displays a picture, and the first pixel unit region and the second pixel unit region do not emit light, and the third pixel unit region emits light, that is, the display device simply displays a green light picture, the light emitted by the light emitting element at the third pixel unit region can irradiate the via holes at the adjacent first pixel unit region and second pixel unit region, and the via holes will reflect the light to the first light emitting unit region and the second light emitting unit region, so that the first light emitting unit region will appear a blue light bright spot, and the second light emitting unit region will appear a red light bright spot, so that the display effect of the display device is poor. Similarly, when the display device displays a blue light picture, a red light picture or other mixed light picture, the light crosstalk phenomenon will occur. Further, the technical solution provided by the embodiment of the present application can block the light emission channel of the light emitting element to the via hole, and can also block the emission light of the adjacent light emitting element reflected by the via hole, so as to improve the light crosstalk condition of the pixel unit region.

[0067] As shown in FIG. 1, it is a structure schematic diagram of another display panel provided by the embodiment of the present application. In the first pixel unit region Pi1, the first substrate 100 includes a first color resistance layer 121. The first color resistance layer 121 can transmit the first color light and filter the remaining color light. Figure 17 In the second pixel unit region Pi2, the first substrate 100 includes a second quantum dot conversion layer 112 and a second color resistance layer 122 located on the side of the second quantum dot conversion layer 112 away from the light emitting element 300. The second color resistance layer 122 can transmit the second color light and filter the remaining color light.

[0068] In the third pixel unit region Pi3, the first substrate 100 includes a third quantum dot conversion layer 113 and a third color resistance layer 123 located on the side of the third quantum dot conversion layer 113 away from the light emitting element 300. The third color resistance layer 123 can transmit the third color light and filter the remaining color light.

[0069] As shown in FIG. 1, it is a structure schematic diagram of another display panel provided by the embodiment of the present application. In the first pixel unit region Pi1, the first substrate 100 includes a first color resistance layer 121. The first color resistance layer 121 can transmit the first color light and filter the remaining color light.

[0070] Figure 18 ​The diagram shows a schematic representation of another display panel provided in an embodiment of the present invention. In the pixel unit region Pi, the first substrate 100 includes a black matrix layer 130, which includes a light-transmitting area corresponding to the light-emitting element 300. A quantum dot conversion layer and a color resist are respectively disposed in the light-transmitting area of ​​the black matrix layer 130. The display panel includes a barrier 500 located between the first substrate 100 and the second substrate 200 and surrounding the light-emitting element 300. The second substrate 200 includes a first insulating layer 600 located between the driving circuit layer 220 and the light-emitting element 300, and a connecting electrode 310 located between the first insulating layer 600 and the light-emitting element 300. The light-shielding portion covering the orthographic projection 221' of the via on the substrate 210 is the black matrix layer 130, the barrier 500, the connecting electrode 310, or the light-emitting element 300.

[0071] It is understood that the black matrix layer 130, the barrier 500, the connecting electrode 310 and the light-emitting element 300 provided in the embodiments of the present invention can all be used as shielding structures to shield the reflection of the via at the pixel unit area where they are located.

[0072] In one embodiment of the present invention, the barrier 500 provided by the present invention is disposed in the first substrate 100 and located on the side of the black matrix layer 130 facing the second substrate 200. Furthermore, by forming the barrier during the fabrication of the first substrate 100, the fabrication process of the second substrate 200 can be simplified.

[0073] like Figure 19 The diagram shows a schematic representation of another display panel provided in an embodiment of the present invention. In this embodiment, at at least one pixel unit region Pi, the light-shielding portion includes the connecting electrode 310 and the barrier 500. The orthographic projection of the connecting electrode 310 onto the substrate 210 and the orthographic projection of the barrier 500 onto the substrate 210 have a first overlapping region S1. At least one via projection 221' is located within the first overlapping region S1. This embodiment of the present invention uses the overlapping of the connecting electrode 310 and the barrier 500 to block the reflection from the via 221, improving the light-blocking effect of the light-shielding portion and enhancing the display effect of the display device.

[0074] like Figure 20The diagram shows a schematic representation of another display panel provided in an embodiment of the present invention. In this embodiment, at at least one pixel unit region Pi, the light-shielding portion includes the connecting electrode 310 and the black matrix layer 130. The orthographic projection of the connecting electrode 310 onto the substrate 210 has a second overlapping region S2 with the orthographic projection of the black matrix layer 130 onto the substrate 210. At least one via orthographic projection 221' is located in the second overlapping region S2. Alternatively, as shown... Figure 20 As shown, at at least one pixel unit region Pi, the light-shielding portion includes the connecting electrode 310, the black matrix layer 130, and the barrier 500. The orthographic projection of the connecting electrode 310 on the substrate 210, the orthographic projection of the black matrix layer 130 on the substrate 210, and the orthographic projection of the barrier 500 on the substrate 210 have a third overlapping region S3; wherein at least one orthographic projection 221' of the via is located in the third overlapping region S3. In this embodiment of the invention, the connecting electrode 310 and the black matrix layer 130 can overlap to block the reflection of the via 221, or the connecting electrode 310, the black matrix layer 130, and the barrier 500 can overlap to block the reflection of the via 221, further improving the light-blocking effect of the light-shielding portion and improving the display effect of the display device.

[0075] like Figure 21 The diagram shows a schematic representation of another display panel according to an embodiment of the present invention. The connecting electrode 310 includes a first sub-connecting electrode 311 and a second sub-connecting electrode 312. The light-emitting element 300 includes a first electrode terminal (not shown) connected to the first sub-connecting electrode 311 and a second electrode terminal (not shown) connected to the second sub-connecting electrode 312. At the pixel unit region Pi, the first sub-connecting electrode 311 surrounds the second sub-connecting electrode 312, and the outer contour line 300' of the orthographic projection of the light-emitting element 300 on the substrate 210 is located within the outer contour line 311' of the orthographic projection of the first sub-connecting electrode 311 on the substrate 210. Furthermore, by increasing the area of ​​the first sub-connecting electrode 311, the ability of the first sub-connecting electrode 311 to block reflections from the via 221 can be improved. Additionally, light generated by the light-emitting element 300 can be blocked from passing through the first sub-connecting electrode 311 into the via 221, further improving the display effect of the display device.

[0076] like Figure 21As shown, the present embodiment provides a gap between the barrier wall 500 and the second substrate 200, wherein the first sub-connection electrode 311 extends to the gap. Further, the first sub-connection electrode 311 can also block the light of the adjacent light emitting element 300 from entering the other pixel unit region Pi through the gap between the barrier wall 500 and the second substrate 200, thereby improving the light crosstalk.

[0077] In an embodiment of the present application, the via provided by the present application can be a via of a transistor. That is, the driving circuit layer provided by the present embodiment includes at least one transistor, and the transistor includes the via. The via includes a via in which the source and the drain of the transistor are respectively in contact with the active region of the transistor. In combination with the above description, the via provided by the present embodiment can be a via in which the source and the drain of the transistor are respectively in contact with the active region of the transistor. Figure 22 and Figure 23 As shown, Figure 22 is a structural schematic diagram of another display panel provided by the present embodiment, Figure 23 is Figure 22 is a sectional view along the direction of HH'. The driving circuit layer includes an active layer 231 on the substrate 210, and the active layer 231 includes an active region of a transistor. A gate insulating layer 232 between the active layer 231 and the light emitting element 300. A gate layer 233 between the gate insulating layer 232 and the light emitting element 300, and the gate layer 233 includes a gate of a transistor. An interlayer insulating layer 234 between the gate layer 233 and the light emitting element 300. A first via 2351 and a second via 2352 on the stack of the interlayer insulating layer 234 and the gate insulating layer 232. A source-drain layer 236 between the interlayer insulating layer 234 and the light emitting element 300, and the source-drain layer 236 includes a source and a drain. And a first insulating layer 600 between the source-drain layer 236 and the light emitting element 300. Wherein the source is in contact with the active layer 231 through the first via 2351, the drain is in contact with the active layer through the second via 2352, and the via includes the first via 2351 and / or the second via 2352.

[0078] It can be understood that the via hole 221 provided by the embodiment of the present application is a structure of punching and metallizing the isolation structure between the circuit layers in order to connect the different circuit layers, which can reflect the light of the light emitting element 300, so that the light crosstalk phenomenon between the adjacent pixel unit regions Pi occurs. In the transistor provided by the embodiment of the present application, since the source and the drain need to be in contact with the active region, and the insulation isolation structure is included between the source and the drain and the active region, the first via hole 2351 and the second via hole 2352 need to be arranged to contact and communicate between the electrode and the active region. The via hole 221 provided by the embodiment of the present application can include at least one of the first via hole 2351 and the second via hole 2352, and then the first via hole 2351 and / or the second via hole 2352 are shielded by the light shielding part, so as to improve the phenomenon of light crosstalk between adjacent pixel unit regions Pi.

[0079] The transistor of the driving circuit layer 220 is connected with the light emitting element 300, and is used to provide a driving signal for the light emitting element 300. The light emitting element provided by the embodiment of the present application can be a micro light emitting diode (Micro-LED).

[0080] It should be noted that the light emitting element 300, the transistor and the like structure shown in the embodiment of the present application only shows the related effect structure, and other wiring structures are also included. In addition, the position of the specific light emitting element 300 in the pixel unit region Pi, the distribution of the transistor and the light emitting element 300 and the like need to be subject to the actual application. Figure 22 And Figure 23 The light emitting element 300, the transistor and the like structure shown in the embodiment of the present application only shows the related effect structure, and other wiring structures are also included. In addition, the position of the specific light emitting element 300 in the pixel unit region Pi, the distribution of the transistor and the light emitting element 300 and the like need to be subject to the actual application.

[0081] Correspondingly, the embodiment of the present application also provides a display device, which comprises the display panel provided by any one of the above embodiments.

[0082] Referring to Figure 24 The display device 1000 provided by the embodiment of the present application can be a mobile terminal device.

[0083] In other embodiments of the present application, the display device provided by the present application can also be a computer, a vehicle-mounted terminal and other electronic display devices, which are not limited by the present application.

[0084] The embodiment of the present application provides a display panel and a display device, which comprise a first substrate and a second substrate arranged oppositely, and the display panel comprises a plurality of pixel unit regions; at the pixel unit region, the second substrate comprises a substrate, a light emitting element located on a side of the substrate facing the first substrate, and a driving circuit layer located between the light emitting element and the substrate; wherein the light emitting element is used for generating first color light, and the pixel unit region comprises a first pixel unit region used for generating the first color light, and the driving circuit layer comprises a plurality of vias; at the first pixel unit region, the display panel comprises at least one first light shielding part located on a side of the via facing away from the substrate, and a first light shielding orthographic projection of the first light shielding part on the substrate covers a via orthographic projection of at least one via on the substrate.

[0085] From the above, the technical scheme provided by the embodiment of the present application can cover the orthographic projection of at least one via on the substrate by the orthographic projection of the first light shielding part on the substrate at the first pixel unit region, not only can the first light shielding part shield the light emitted by the adjacent light emitting element reflected by the via, but also can the first light shielding part shield the light emitted by the light emitting element at the first pixel unit region to the via, so as to avoid the light reflected by the via at the first pixel unit region to the adjacent pixel unit region, thereby achieving the purpose of improving the problem of light crosstalk between the adjacent light emitting elements, and ensuring the display effect of the display device.

[0086] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized by, The display panel comprises a first substrate and a second substrate arranged oppositely, and the display panel comprises a plurality of pixel unit regions; At the pixel unit region, the second substrate comprises a substrate, a light emitting element located on a side of the substrate facing the first substrate, and a driving circuit layer located between the light emitting element and the substrate; wherein the light emitting element is used to generate light of a first color, and the pixel unit region comprises a first pixel unit region used to generate light of the first color, and the driving circuit layer comprises a plurality of vias; At the first pixel unit region, the display panel comprises at least one first light shielding part located on a side of the via facing away from the substrate, and a first light shielding orthographic projection of the first light shielding part on the substrate covers a via orthographic projection of at least one of the vias on the substrate; The pixel unit region comprises a second pixel unit region used to generate light of a second color; At the second pixel unit region, the display panel comprises at least one second light shielding part located on a side of the via facing away from the substrate, and a second light shielding orthographic projection of the second light shielding part on the substrate covers a via orthographic projection of at least one of the vias on the substrate; The number of via orthographic projections covered by the first light shielding orthographic projection at the first pixel unit region is greater than the number of via orthographic projections covered by the second light shielding orthographic projection at the second pixel unit region; And / or, the number of first light shielding orthographic projections covering the same via orthographic projection at the first pixel unit region is greater than the number of second light shielding orthographic projections covering the same via orthographic projection at the second pixel unit region.

2. The display panel of claim 1, wherein, At least one of the first light shielding part and the second light shielding part is a same first multiplexed light shielding part, and an orthographic projection of the first multiplexed light shielding part on the substrate covers a number of via orthographic projections at the first pixel unit region, which is greater than a number of via orthographic projections at the second pixel unit region.

3. The display panel of claim 1, wherein, The pixel unit region comprises a third pixel unit region used to generate light of a third color; At the third pixel unit region, the display panel comprises at least one third light shielding part located on a side of the via facing away from the substrate, and a third light shielding orthographic projection of the third light shielding part on the substrate covers a via orthographic projection of at least one of the vias on the substrate.

4. The display panel of claim 3, wherein, The number of via orthographic projections covered by the first light shielding orthographic projection at the first pixel unit region is greater than the number of via orthographic projections covered by the third light shielding orthographic projection at the third pixel unit region; And / or, the number of first light shielding orthographic projections covering the same via orthographic projection at the first pixel unit region is greater than the number of third light shielding orthographic projections covering the same via orthographic projection at the third pixel unit region.

5. The display panel of claim 3, wherein, The light emitting element at the second pixel unit region has a light emission conversion efficiency less than that of the light emitting element at the third pixel unit region; Wherein, the number of via orthographic projections covered by the third light shielding orthographic projection at the third pixel unit region is greater than the number of via orthographic projections covered by the second light shielding orthographic projection at the second pixel unit region; And / or, the number of third light-shielding projections covering the same via projection orthographic projection at the third pixel unit region is greater than the number of second light-shielding projections covering the same via projection orthographic projection at the second pixel unit region.

6. The display panel of claim 3, wherein, At least one of the first light-shielding portion and the third light-shielding portion is a same second multiplexed light-shielding portion, and an orthographic projection of the second multiplexed light-shielding portion on the substrate covers a number of via projection orthographic projections of the first pixel unit region, which is greater than a number of via projection orthographic projections of the third pixel unit region. And / or, at least one of the second light-shielding portion and the third light-shielding portion is a same third multiplexed light-shielding portion, and an orthographic projection of the third multiplexed light-shielding portion on the substrate covers a number of via projection orthographic projections of the second pixel unit region, which is greater than a number of via projection orthographic projections of the third pixel unit region.

7. The display panel of claim 3, wherein, The first color light is blue light, the second color light is red light, and the third color light is green light. The first substrate includes a first color resistance layer at the first pixel unit region. The first substrate includes a second quantum dot conversion layer at the second pixel unit region, and a second color resistance located on a side of the second quantum dot conversion layer away from the light emitting element. The first substrate includes a third quantum dot conversion layer at the third pixel unit region, and a third color resistance located on a side of the third quantum dot conversion layer away from the light emitting element.

8. The display panel according to any one of claims 1-7, characterized in that, The first substrate includes a black matrix layer at the pixel unit region, the black matrix layer includes a light transmission area corresponding to the light emitting element, the display panel includes a barrier wall disposed between the first substrate and the second substrate and surrounding the light emitting element, and the second substrate includes a first insulating layer between a driving circuit layer and the light emitting element, and a connection electrode between the first insulating layer and the light emitting element. The light-shielding portion covering the via projection orthographic projection on the substrate is the black matrix layer, the barrier wall, the connection electrode, or the light emitting element.

9. The display panel of claim 8, wherein, The barrier wall is disposed in the first substrate and located on a side of the black matrix layer facing the second substrate.

10. The display panel of claim 8, wherein, The light-shielding portion includes the connection electrode and the barrier wall at at least one of the pixel unit regions, and an orthographic projection of the connection electrode on the substrate has a first overlapping area with an orthographic projection of the barrier wall on the substrate. At least one of the via projection orthographic projections is located in the first overlapping area.

11. The display panel of claim 8, wherein, The light-shielding portion includes the connection electrode and the black matrix layer at at least one of the pixel unit regions, and an orthographic projection of the connection electrode on the substrate has a second overlapping area with an orthographic projection of the black matrix layer on the substrate. At least one of the via projection orthographic projections is located in the second overlapping area.

12. The display panel of claim 8, wherein, The light-shielding portion includes the connection electrode, the black matrix layer, and the barrier wall at at least one of the pixel unit regions, and an orthographic projection of the connection electrode on the substrate, an orthographic projection of the black matrix layer on the substrate, and an orthographic projection of the barrier wall on the substrate have a third overlapping area. At least one of the via holes is located in the third overlapping area.

13. The display panel of claim 8, wherein, The connecting electrode includes a first sub-connecting electrode and a second sub-connecting electrode, and the light emitting element includes a first electrode end connected to the first sub-connecting electrode and a second electrode end connected to the second sub-connecting electrode. In the pixel unit area, the first sub-connecting electrode surrounds the second sub-connecting electrode, and an outer contour line of the light emitting element on the substrate is located within an outer contour line of the first sub-connecting electrode on the substrate.

14. The display panel of claim 13, wherein, The barrier wall has a gap with the second substrate, and the first sub-connecting electrode extends to the gap.

15. The display panel of claim 1, wherein, The driving circuit layer includes at least one transistor, and the transistor includes the via hole.

16. The display panel of claim 15, wherein, The driving circuit layer includes an active layer; a gate insulating layer between the active layer and the light emitting element; A gate layer between the gate insulating layer and the light emitting element, the gate layer including a gate; an interlayer insulating layer between the gate layer and the light emitting element; A first via hole and a second via hole on a stack of the interlayer insulating layer and the gate insulating layer; and a source-drain layer between the interlayer insulating layer and the light emitting element, the source-drain layer including a source and a drain, wherein the source is in contact with the active layer through the first via hole, the drain is in contact with the active layer through the second via hole, and the via hole includes the first via hole and / or the second via hole.

17. A display device comprising: The display device includes the display panel of any one of claims 1-16.

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