Display panel and display device

Abstract

The application provides a display panel and a display device, the display panel comprising a first display area and a second display area, the second display area surrounding at least part of the first display area; the display panel comprising a light-emitting layer and a light filtering layer, the light-emitting layer comprising a plurality of light-emitting units, the light filtering layer comprising a plurality of light filtering structures, the light-emitting units and the light filtering structures being correspondingly arranged; the light filtering structures comprising first light filtering structures located in the first display area and second light filtering structures located in the second display area; the first light filtering structures comprising first color resistance units, and the second light filtering structures comprising second color resistance units; the light filtering colors of the first color resistance units and the second color resistance units being the same; the light transmittance of the first light filtering structures being greater than that of the second light filtering structures. It can be seen that the light transmittance of the first light filtering structures is set to be greater than that of the second light filtering structures, the light transmittance at the first display area is further improved, and the light collection effect at the corresponding area of the first display area is improved.

Description

Technical Field

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

[0002] The rapid development of display technology has opened up endless possibilities for electronic terminals. In particular, the rapid application of display technologies represented by organic light-emitting diodes (OLEDs) has led to the rapid promotion of mobile terminals featuring "full-screen," "notch-screen," "under-display sound," and "under-display fingerprint" as selling points. Major mobile phone and panel manufacturers have launched many products touting "full-screen" displays, but most still use near-full-screen designs such as "notch screens" or "waterdrop screens." This is because mobile terminals have front-facing cameras, necessitating the reservation of a certain area for them, resulting in a relatively low display area ratio for existing display panels. To address this issue, engineers have developed a technology where the display interface is completely covered by the screen, namely, an under-display design for the photosensitive element. However, existing display panels using under-display photosensitive elements suffer from poor light collection performance. Summary of the Invention

[0003] In view of this, the present invention provides a display panel and display device that effectively solves the existing technical problems, ensures high light transmittance of the first display area, and thus improves the light collection effect in the corresponding area of ​​the first display area.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0005] A display panel includes a first display area and a second display area, the second display area surrounding at least a portion of the first display area;

[0006] The display panel includes a light-emitting layer and a filter layer. The light-emitting layer includes multiple light-emitting units, and the filter layer includes multiple filter structures. The light-emitting units are arranged correspondingly to the filter structures.

[0007] The filter structure includes a first filter structure located in the first display area and a second filter structure located in the second display area; the first filter structure includes a first color resist unit, and the second filter structure includes a second color resist unit;

[0008] The first color resist unit and the second color resist unit have the same filter color;

[0009] The light transmittance of the first filter structure is greater than that of the second filter structure.

[0010] Accordingly, the present invention also provides a display device, the display device including the display panel described above.

[0011] Compared with the prior art, the technical solution provided by the present invention has at least the following advantages:

[0012] This invention provides a display panel and a display device. The display panel includes a first display area and a second display area, the second display area surrounding at least a portion of the first display area. The display panel includes a light-emitting layer and a filter layer. The light-emitting layer includes a plurality of light-emitting units, and the filter layer includes a plurality of filter structures. The light-emitting units and filter structures are correspondingly arranged. The filter structures include a first filter structure located in the first display area and a second filter structure located in the second display area. The first filter structure includes a first color resist unit, and the second filter structure includes a second color resist unit. The first color resist unit and the second color resist unit have the same filter color. The light transmittance of the first filter structure is greater than the light transmittance of the second filter structure. Therefore, the technical solution provided by this invention sets the light transmittance of the first filter structure to be greater than the light transmittance of the second filter structure, further improving the light transmittance at the first display area, thereby improving the light collection effect at the corresponding area of ​​the first display area. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0015] Figure 2 This invention provides a schematic diagram of the structure of a first display area and its surrounding area according to an embodiment of the invention;

[0016] Figure 3 for Figure 2 A cross-sectional view along the AA' direction;

[0017] Figure 4 This is a schematic diagram of another first display area and its surrounding structure provided in an embodiment of the present invention;

[0018] Figure 5 for Figure 4 A cross-sectional view along the BB' direction;

[0019] Figure 6This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of a third structure provided in an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the distribution structure of a third structure provided in an embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of the structure of a first display area provided in an embodiment of the present invention;

[0023] Figure 10 This is a schematic diagram of another structure of the first display area provided in an embodiment of the present invention;

[0024] Figure 11 A distribution structure view of a second structure provided in an embodiment of the present invention;

[0025] Figure 12 This is another structural view of the first display area provided in an embodiment of the present invention;

[0026] Figure 13 This is a schematic diagram of another structure of the first display area provided in an embodiment of the present invention;

[0027] Figure 14 This is another structural view of the first display area provided in an embodiment of the present invention;

[0028] Figure 15 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present invention;

[0029] Figure 16 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present invention;

[0030] Figure 17 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present invention;

[0031] Figure 18 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] As described in the background section, to address the issue of low display area occupancy, engineers developed a technology where the display interface is completely covered by the screen, i.e., the photosensitive element is designed under the screen. However, existing display panels using under-screen photosensitive elements suffer from poor light collection performance.

[0034] Based on this, embodiments of the present invention provide a display panel and a display device that effectively solve existing technical problems, ensure high light transmittance in the first display area, and thereby improve the light collection effect in the corresponding area of ​​the first display area.

[0035] To achieve the above objectives, the technical solutions provided by the embodiments of the present invention are as follows, in detail... Figures 1 to 18 The technical solutions provided in the embodiments of the present invention will be described in detail.

[0036] Combination Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 2 This invention provides a schematic diagram of the structure of a first display area and its surrounding area, according to an embodiment of the invention. Figure 3 for Figure 2 A cross-sectional view along the AA' direction. The display panel provided in this embodiment of the invention includes a first display area A1 and a second display area A2, the second display area A2 surrounding at least a portion of the first display area A1.

[0037] The display panel includes a light-emitting layer 10 and a light-filtering layer 20. The light-emitting layer 10 includes a plurality of light-emitting units 11, and the light-filtering layer 20 includes a plurality of light-filtering structures. The light-emitting units 11 are correspondingly arranged with the light-filtering structures. In the embodiments of the present invention, the light-emitting units 11 may correspond one-to-one with the light-filtering structures, or in other embodiments of the present invention, multiple light-emitting units 11 may correspond to one light-filtering structure. The present invention does not impose specific limitations on this.

[0038] The filtering structure includes a first filtering structure 21 located in the first display area A1 and a second filtering structure 22 located in the second display area A2. The first filtering structure 21 includes a first color resist unit 211, and the second filtering structure 22 includes a second color resist unit 221. The first color resist unit 211 and the second color resist unit 221 filter the same color, that is, the first color resist unit 211 and the second color resist unit 221 can transmit light of the same color while filtering out other colors of light. The light transmittance of the first filtering structure 21 is greater than that of the second filtering structure 22.

[0039] It is understood that the technical solution provided by the embodiments of the present invention sets the light transmittance of the first filter structure 21 to be greater than that of the second filter structure 22, thereby further improving the light transmittance at the first display area A1 and thus improving the light collection effect at the corresponding area of ​​the first display area A1.

[0040] like Figure 1 As shown, the display panel provided by the present invention has a display area divided into a first display area A1 and a second display area A2, wherein the first display area A1 can be wholly or partially surrounded by the second display area A2. Figure 1 As shown, the first display area A1 can be located at a corner of the display area. In other embodiments, the first display area A1 can also be located at the center of the display area, or slightly to the right of the center, or in contact with the left or right edge of the display area, etc., and the present invention does not impose specific limitations on this. Furthermore, the first display area A1 provided in the embodiments of the present invention can be a regular shape such as a circle, ellipse, or rectangle; or, in other embodiments of the present invention, the first display area A1 can also be an irregular shape, and the present invention does not impose specific limitations on this.

[0041] like Figure 3 As shown, the display panel provided in this embodiment of the invention includes a substrate 30; a transistor array layer 40 located on the substrate 30, the transistor array layer 40 including multiple transistors and multiple capacitors, wherein the transistors and capacitors are used to form a pixel circuit that provides driving current to the light-emitting unit 11, and a driving circuit that provides driving signals to the pixel circuit, etc.; an anode layer 101 located on the transistor array layer 40, the anode layer 101 including multiple anode blocks; a pixel definition layer 50 located on the anode layer 101, the pixel definition layer 50 including multiple cutouts, the cutouts corresponding to the anode blocks; a light-emitting layer 102 located in the cutouts of the pixel definition layer 50 and located on the anode blocks; and a cathode layer 103 located on the light-emitting layer 102, wherein the anode layer 101, the light-emitting layer 102 and the cathode layer 103 constitute a light-emitting layer 10, and the anode blocks, the light-emitting layer 102 and the cathode layer 103 constitute a light-emitting unit 11.

[0042] The display panel also includes an encapsulation layer 60 on the cathode layer 103; a touch layer 70 on the encapsulation layer 60; and a light filter layer 20 on the touch layer 70. The light filter layer 20 includes a first light filter structure 21, a second light filter structure 22, and other light filter structures. The first light filter structure 21 includes a first color resist unit 211, the second light filter structure 22 includes a second color resist unit 221, and the other light filter structures include other color resist units.

[0043] In one embodiment of the present invention, the light transmittance of the first filter structure 21 provided by the present invention is greater than the light transmittance of the second filter structure 22. This can be addressed by optimizing parameters such as the thickness of the color resist unit in the filter structure. Combined with... Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of another first display area and its surrounding structure provided in an embodiment of the present invention. Figure 5 for Figure 4 A cross-sectional view along the BB' direction. The second filter structure 22 provided in this embodiment further includes a second black matrix 222 surrounding the second color resist unit 221. The second black matrix 222 serves to block light and includes light-transmitting cutouts, which are filled by the second color resist unit 221. In the second display area A2, the remaining filter structures also include black matrices, and the black matrices in the second display area A2 are in contact with each other to prevent light leakage in the second display area A2.

[0044] Furthermore, the first filter structure 21 provided in this embodiment of the invention includes at least one of the following structures:

[0045] The first structure 2101 includes a first color resist unit 211 and a first black matrix 212 surrounding the first color resist unit 211, wherein the thickness h1 of the first color resist unit 211 is less than the thickness h2 of the second color resist unit 221.

[0046] The second structure 2102 includes the first color resist unit 211 and a first black matrix 212 surrounding the first color resist unit 211, wherein the width a1 of the first black matrix 212 is smaller than the width a2 of the second black matrix 212.

[0047] The third structure 2103 includes the first color resist unit 211 and a first black matrix surrounding the first color resist unit 211. The first black matrix includes a first cutout 2121 and a black matrix block 2122. The first cutout 2121 extends through the first black matrix and into the first color resist unit 211 in the direction from the first black matrix to the center of the first color resist unit 211.

[0048] The fourth structure 2104 includes the first color resist unit 211 and the first color resist unit 211 is not surrounded by a first black matrix.

[0049] It is understood that in the display panel provided in the embodiments of the present invention, the first filter structure 21 includes at least one of a first structure 2101, a second structure 2102, a third structure 2103, and a fourth structure 2104; that is, the first filter structure 21 includes a first structure 2101, and / or a second structure 2102, and / or a third structure 2103 and / or a fourth structure 2104. In the first structure 2101, the first black matrix 212 includes a light-transmitting cutout, and the first color resist unit 211 fills the light-transmitting cutout. The thickness h1 of the first color resist unit 211 in the first structure 2101 is less than the thickness h2 of the second color resist unit 221. By reducing the thickness of the first color resist unit 211, the light transmittance of the first color resist unit 211 is increased, thereby increasing the light emission efficiency of the light-emitting unit corresponding to the first color resist unit 211, thereby achieving the purpose of increasing the light transmittance of the first structure 2101. Optionally, in the first structure 2101, the width of the first black matrix 212 can be set to be the same as the width of the second black matrix 222, or the width of the first black matrix 212 can be set to be less than the width of the second black matrix 222.

[0050] In the second structure 2102, the first black matrix 212 includes a light-transmitting perforation, and the first color resist unit 211 fills the light-transmitting perforation. The width of the first black matrix 212 is set to be smaller than the width of the second black matrix 222, thereby relatively reducing the light-blocking area of ​​the first black matrix 212 on the light-emitting unit and improving the light transmittance of the second structure 2102. Optionally, in the second structure 2102, the thickness of the first color resist unit 211 can be set to be the same as the thickness of the second color resist unit 221, or the thickness of the first color resist unit 211 can be set to be smaller than the thickness of the second color resist unit 221.

[0051] In the third structure 2103, the first black matrix includes a light-transmitting perforation, and the first color resist unit 211 fills the light-transmitting perforation; furthermore, the first black matrix includes a first perforation 2121 and a black matrix block 2122. The first perforation 2121 can reduce the light-blocking area of ​​the first black matrix and improve the light transmittance of the third structure 2103. Optionally, in the third structure 2103, the thickness of the first color resist unit 211 can be set to be the same as the thickness of the second color resist unit 221, or the thickness of the first color resist unit 211 can be set to be less than the thickness of the second color resist unit 221; and the width of the first black matrix can be set to be the same as the width of the second black matrix 222, or the width of the first black matrix can be set to be less than the width of the second black matrix 222.

[0052] Furthermore, in the fourth structure 2104, the fourth structure 2104 includes only the first color resist unit 211 and does not include the first black matrix surrounding it, thus avoiding the light blocking problem of the first black matrix and improving the light transmittance of the fourth structure 2104.

[0053] The first filter structure 21 provided in this embodiment of the invention includes one or more of the first structure 2101, the second structure 2102, the third structure 2103 and the fourth structure 2104, which can improve the light transmittance of the first display area A1.

[0054] like Figure 6 The diagram shows another display panel structure provided in an embodiment of the present invention. The first filter structure includes the fourth structure 2104, and in the fourth structure 2104, the thickness of the first color resist unit 211 is less than the thickness of the second color resist unit 221, further improving the light transmittance of the fourth structure 2104. Alternatively, in other embodiments of the present invention, the thickness of the first color resist unit 211 of the fourth structure 2104 can be set to be equal to the thickness of the second color resist unit 221.

[0055] like Figure 7 The diagram shows a schematic representation of a third structure according to an embodiment of the present invention. The first filter structure provided in this embodiment includes the third structure 2103, which comprises multiple first cutouts 2121 and multiple black matrix blocks 2122, with the first cutouts 2121 and the black matrix blocks 2122 alternating. This embodiment alternates the first cutouts 2121 and the black matrix blocks 2122 along the annular edge of the first color filter unit 211, thereby avoiding the situation where multiple first cutouts 2121 contact each other, resulting in excessively large cutouts, and ensuring that the light transmittance of the third structure 2103 at the boundary between the first color filter unit 211 and the first black matrix is ​​relatively uniform.

[0056] It should be noted that, Figure 7 The two third structures 2103 shown are only two of all applicable structures. The embodiments of the present invention do not impose specific restrictions on the position and shape of the first hollow 2121 in the provided third structure 2103, and specific design is required according to actual application.

[0057] like Figure 8The diagram shows a distribution structure of a third structure according to an embodiment of the present invention. In the third structure 2103, the opening area of ​​the first hollow section 2121 is negatively correlated with the distance from the third structure 2103 to the center O of the first display area A1. That is, in the first display area A1, from the edge of the first display area A1 towards the center O of the first display area A1, the closer the third structure 2103 is to the center O of the first display area A1, the larger the opening area of ​​its first hollow section 2121; conversely, the farther the third structure 2103 is from the center O of the first display area A1, the smaller the opening area of ​​its first hollow section 2121.

[0058] Understandably, in the third structure 2103, the larger the opening area of ​​the first cutout 2121, the greater the light transmittance of the third structure 2103. In this embodiment of the invention, the opening area of ​​the first cutout 2121 is negatively correlated with the distance from the third structure 2103 to the center O of the first display area A1, so that the light transmittance of the first display area A1 gradually increases from the edge to its center O. That is, the light transmittance of the first display area A1 gradually increases from the edge to its center O, so that the light transmittance of the second display area A2 increases gradually from the edge to its center O. This improves the problem of excessive brightness difference at the boundary between the second display area A2 and the first display area A1, and improves the display effect of the display panel.

[0059] like Figure 9 The diagram shown is a schematic representation of a first display area provided in an embodiment of the present invention. The display panel provided in this embodiment further includes a third filter structure 23, located in the first display area A1. The third filter structure 23 includes a third color resist unit 231 and a third black matrix 232 surrounding the third color resist unit 231. The third color resist unit 231 has the same filter color as the second color resist unit 222 (or the first color resist unit 221), and the third color resist unit 231 has the same thickness as the second color resist unit 222. The distribution density of the third filter structure 23 gradually decreases in the direction from the second display area A2 to the first display area A1.

[0060] It is understood that the light transmittance of the third filter structure 23 provided in this embodiment of the invention is greater than or equal to the light transmittance of the second filter structure 22, and the light transmittance of the third filter structure 23 is less than the light transmittance of the first filter structure 21. By setting the third filter structure 23 in the first display area A1, the situation where the light transmittance of the first display area A1 differs too much from that of the second display area A2 can be avoided, ensuring that the difference in luminous brightness between the first display area A1 and the second display area A2 is small, thereby improving the display effect of the display panel. Furthermore, in this embodiment of the invention, the distribution density of the third filter structure 23 is set to gradually decrease from the second display area A2 towards the first display area A1. As a result, the luminous brightness of the display panel can smoothly transition from the second display area A2 to the first display area A1, avoiding the appearance of bright lines at the boundary between the first display area A1 and the second display area A2, further improving the display effect of the display panel.

[0061] Furthermore, based on the scheme where the distribution density of the third filter structure gradually decreases from the second display area to the first display area, the distribution density of the first filter structure provided in this embodiment of the invention can gradually increase in the direction from the second display area to the first display area. Thus, by complementing the density of the first filter structure with high light transmittance and the third filter structure with low light transmittance, the brightness consistency of the emitted light in the first display area and the second display area is ensured to be high, thereby improving the display effect of the display panel.

[0062] like Figure 10 The diagram shows another structural schematic of the first display area provided in an embodiment of the present invention. In this embodiment, the first filter structure 21 and the third filter structure 23 are alternately arranged in the direction from the second display area A2 to the first display area A1. Because the light transmittance of the first filter structure 21 and the third filter structure 23 is different, when both the first filter structure 21 and the third filter structure 23 are arranged in a concentrated manner, the difference in light transmittance between the concentrated areas of the first filter structure 21 and the concentrated areas of the third filter structure 23 will be significant. By alternating the arrangement of the first filter structure 21 and the third filter structure 23 in this embodiment, the problem of large differences in light transmittance in different areas of the first display area A1 can be avoided, thus preventing brightness differences in different areas of the first display area A1 and improving the display effect of the display panel. Furthermore, by alternating the arrangement of the first filter structure 21 and the third filter structure 23, the influence of the first filter structure 21 on the color shift of the display panel can be reduced.

[0063] like Figure 11The diagram shows a distribution structure view of a second structure provided in an embodiment of the present invention. The first filter structure includes the second structure 2102, and the width of the first black matrix 212 of the second structure 2102 gradually decreases in the direction from the second display area A2 to the first display area A1. Understandably, among the two second structures 2102 in the direction from the second display area A2 to the first display area A1, the width of the first black matrix 212 of the second structure 2102 closer to the second display area A2 is greater than the width of the first black matrix 212 of the second structure 2102 farther from the second display area A2. That is, among the two second structures 2102 in the direction from the second display area A2 to the first display area A1, the light transmittance of the second structure 2102 closer to the second display area A2 is less than the light transmittance of the second structure 2102 farther from the second display area A2. This causes the light transmittance of the first display area A1 to gradually increase in the direction from the second display area A2 to the first display area A1. Consequently, the luminous brightness of the display panel can smoothly transition from the second display area A2 to the first display area A1, avoiding bright lines at the boundary between the first display area A1 and the second display area A2, and further improving the display effect of the display panel.

[0064] In one embodiment of the present invention, the first filter structure provided by the present invention includes at least two of the first structure, the second structure, the third structure, and the fourth structure. For example... Figure 12 The diagram shows a structural view of another first display area provided in an embodiment of the present invention, wherein the first display area A1 includes a second structure 2102 and a fourth structure 2104. To improve the display effect, adjacent first filter structures in the first display area A1 are not identical; for example... Figure 12 As shown, in two adjacent first filter structures, one is the second structure 2102, and the other is the fourth structure 2104.

[0065] It is understood that the light transmittance of the first, second, third, and fourth structures provided in the embodiments of the present invention can be different. Setting two adjacent first filter structures as different structures can avoid the problem of large differences in light transmittance between the concentrated area and other areas of the first display area caused by the concentrated setting of the same type of first filter structures. In other words, it avoids the problem of large differences in light transmittance in different areas of the first display area, thereby avoiding color shift in different areas of the first display area and improving the display effect of the display panel.

[0066] like Figure 13The diagram shows another structural schematic of a first display area provided by an embodiment of the present invention. The first filter structure provided by the embodiment of the present invention includes the second structure 2102. The first color resist unit 211 includes a first color resist unit 211a and a second color resist unit 211b with different filter colors. The distance difference between the first color resist unit 211a and the second color resist unit 211b to the center O of the first display area A1 is a preset value. The width of the first black matrix 212a surrounding the first color resist unit 211a is d1, and the width of the first black matrix 212b surrounding the second color resist unit 211b is d2, where d1 < d2.

[0067] It should be noted that there is at least a transparent area between the first filter structures in the first display area. The width of the first black matrix can be understood as the size of the first black matrix in the first filter structure, in the direction from the first black matrix to the first color resist unit on the plane parallel to the display panel.

[0068] It is understood that the first color resist unit 211a and the second color resist unit 211b provided in the embodiments of the present invention have different filter colors. Under the same filter structure conditions, the viewing angle brightness decay rate of the light emitted by the first color resist unit 211a is greater than that of the second color resist unit 211b. The technical solution provided in the embodiments of the present invention sets the width d1 of the first black matrix 212a corresponding to the first color resist unit 211a to be smaller than the width d2 of the first black matrix 212b corresponding to the second color resist unit 211b within a range of approximately equal or equal distances from the center O of the first display area A1. This balances the inconsistent viewing angle brightness decay rates of the light emitted by the first color resist unit 211a and the second color resist unit 211b, ensuring a high display effect of the display panel.

[0069] In one embodiment of the present invention, the preset value provided by the present invention can be less than or equal to 20 micrometers. Furthermore, the first color resist unit 211a provided in this embodiment of the present invention is a green color resist unit, emitting green light while filtering out other colors of light; and the second color resist unit 211b can be a red color resist unit or a blue color resist unit, emitting red light from the red color resist unit and blue light from the blue color resist unit.

[0070] like Figure 14The diagram shows a structural view of another first display area provided by an embodiment of the present invention. The first filter structure provided by the present invention includes a first color filter structure 21a with a first color filter and a second color filter structure 21b with a second color filter. The viewing angle brightness attenuation rate of the filter structure corresponding to the first color is greater than the viewing angle brightness attenuation rate of the filter structure corresponding to the second color filter. The light transmittance of the first color filter structure 21a is greater than the light transmittance of the second color filter structure 21b. The distance difference between the first color resist unit 211 of the first color filter structure 21a and the second color filter structure 21b and the center O of the first display area A1 is a preset value.

[0071] Understandably, in the technical solution provided by this embodiment of the invention, the viewing angle brightness decay rate of the filter structure corresponding to the first color is greater than the viewing angle brightness decay rate of the filter structure corresponding to the second color. Therefore, in areas where the distance from the center O of the first display area A1 is approximately equal or equidistant, the light transmittance of the first color filter structure 21a is increased, balancing the inconsistent viewing angle brightness decay rates of the first color filter structure 21a and the second color filter structure 21b, thus ensuring a high display effect for the display panel. In this embodiment, the first color is green, and the second color is red or blue.

[0072] In this embodiment of the invention, the light transmittance of the first color filter structure and the second color filter structure can be adjusted by regulating the opening area of ​​the black matrix in the filter structure. For example... Figure 15 The diagram shows a schematic representation of another display panel provided in an embodiment of the present invention. The first color filter structure includes a first black matrix 212, which includes light-transmitting perforations. The first color resist unit 211 fills the light-transmitting perforations. The opening area S1 of the light-transmitting perforations in the first color filter structure 21a is larger than the opening area S2 of the light-transmitting perforations in the second color filter structure 21b. Furthermore, by increasing the opening area S1 of the light-transmitting perforations in the first color filter structure 21a, the light transmittance of the first color filter structure 21a is adjusted to be greater than that of the second color filter structure 21b. This ultimately balances the inconsistent viewing angle brightness decay rates of the first color filter structure 21a and the second color filter structure 21b, ensuring a high display effect for the display panel.

[0073] Alternatively, embodiments of the present invention can also adjust the thickness of the first color resist unit to achieve the purpose of adjusting the light transmittance of the first color filter structure and the second color filter structure. For example... Figure 16The diagram shows another display panel structure provided by an embodiment of the present invention. In the direction from which the light-emitting unit 11 points to the filter structure, the thickness of the first color resist unit 211 of the first color filter structure 21a is less than the thickness of the first color resist unit 211 of the second color filter structure 21b. Furthermore, by reducing the thickness of the first color resist unit 211 of the first color filter structure 21a, the light transmittance of the first color filter structure 21a is adjusted to be greater than that of the second color filter structure 21b. This ultimately balances the inconsistent viewing angle brightness decay rates of the first color filter structure 21a and the second color filter structure 21b, ensuring a high display effect for the display panel.

[0074] like Figure 17 The diagram shows a structural schematic of another display panel provided in an embodiment of the present invention. The first display area A1 includes a light-transmitting display area A11 and a transition display area A12. The transition display area A12 is located between the light-transmitting display area A11 and the second display area A2. The light transmittance of the transition display area A12 is less than that of the light-transmitting display area A11.

[0075] Understandably, by setting a transition television area A12 between the light-transmitting display area A11 and the second display area A2, the light transmittance can be gradually increased from the second display area A2 to the light-transmitting display area A11, ensuring that the brightness difference of the display panel at the boundary line between the second display area A2, the display transition area A12 and the display light-transmitting area A11 is small, thereby improving the display effect.

[0076] In one embodiment of the present invention, when the first filter structure of the first display area provided by the present invention includes a first structure, the thickness of the first color resist unit of the first structure of the light-transmitting display area is less than the thickness of the first color resist unit of the first structure of the transition display area, thereby achieving the purpose that the light transmittance of the transition display area is less than the light transmittance of the light-transmitting display area.

[0077] When the first filter structure includes the second structure, the width of the first black matrix of the second structure in the light-transmitting display area is smaller than the width of the first black matrix of the second structure in the transition display area, thereby achieving the purpose that the light transmittance of the transition display area is less than the light transmittance of the light-transmitting display area.

[0078] When the first filter structure includes the third structure, the opening area of ​​the first hollow of the third structure in the light-transmitting display area is greater than the opening area of ​​the first hollow of the third structure in the transition display area, thereby achieving the purpose that the light transmittance of the transition display area is less than the light transmittance of the light-transmitting display area.

[0079] Furthermore, when the first filter structure includes the fourth structure, the thickness of the first color resist unit of the fourth structure in the light-transmitting display area is less than the thickness of the first color resist unit of the fourth structure in the transition display area, thereby achieving the purpose that the light transmittance of the transition display area is less than the light transmittance of the light-transmitting display area.

[0080] Accordingly, embodiments of the present invention also provide a display device, the display device including the display panel described above.

[0081] refer to Figure 18 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention, wherein the display device 1000 provided in the embodiment of the present invention can be a mobile terminal device.

[0082] Optionally, the display device provided by the present invention can also be an electronic display device such as a computer or a wearable display device, and the present invention does not impose specific limitations on it.

[0083] In one embodiment of the present invention, the display device provided by the present invention includes a photosensitive element, which is disposed overlapping and corresponding to the first display area, specifically overlapping and corresponding to the light-transmitting display area of ​​the first display area. For example, a camera can be disposed on the back side of the display panel and overlap with the light-transmitting display area of ​​the display panel. Alternatively, the light-transmitting display area provided by the embodiment of the present invention can also be provided with other types of photosensitive elements, which need to be specifically designed according to the type of display device. The overlapping and corresponding arrangement of the photosensitive element with the light-transmitting display area provided by the embodiment of the present invention enables the photosensitive element to collect the light transmitted through the light-transmitting display area for operation; furthermore, no pixel circuit is provided in the light-transmitting display area provided by the embodiment of the present invention, thereby ensuring a high light transmittance of the light-transmitting display area and ensuring better light collection effect of the photosensitive element.

[0084] This invention provides a display panel and a display device. The display panel includes a first display area and a second display area, with the second display area surrounding at least a portion of the first display area. The display panel includes a light-emitting layer and a filter layer. The light-emitting layer includes a plurality of light-emitting units, and the filter layer includes a plurality of filter structures. The light-emitting units and filter structures are correspondingly arranged. The filter structures include a first filter structure located in the first display area and a second filter structure located in the second display area. The first filter structure includes a first color resist unit, and the second filter structure includes a second color resist unit. The first color resist unit and the second color resist unit have the same filter color. The light transmittance of the first filter structure is greater than the light transmittance of the second filter structure. Therefore, the technical solution provided by this invention sets the light transmittance of the first filter structure to be greater than that of the second filter structure, further improving the light transmittance at the first display area, thereby improving the light collection effect at the corresponding area of ​​the first display area.

[0085] In the description of this invention, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0087] In this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0088] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A display panel, characterized in that, The display panel includes a first display area and a second display area, wherein the second display area surrounds at least a portion of the first display area; The display panel includes a light-emitting layer and a filter layer. The light-emitting layer includes multiple light-emitting units, and the filter layer includes multiple filter structures. The light-emitting units are arranged correspondingly to the filter structures. The filter structure includes a first filter structure located in the first display area and a second filter structure located in the second display area; the first filter structure includes a first color resist unit, and the second filter structure includes a second color resist unit; the filter structure further includes a third filter structure located in the first display area, and the third filter structure includes a third color resist unit; The first color filter unit, the second color filter unit, and the third color filter unit have the same filter color; The light transmittance of the first filter structure is greater than that of the second filter structure, the light transmittance of the third filter structure is greater than or equal to that of the second filter structure, and the light transmittance of the third filter structure is less than that of the first filter structure; wherein, in the direction from the second display area to the first display area, the distribution density of the third filter structure gradually decreases, and the distribution density of the first filter structure gradually increases.

2. The display panel according to claim 1, characterized in that, The second filter structure also includes a second black matrix surrounding the second color resist unit; The first filter structure includes at least one of the following structures: A first structure, comprising a first color resist unit and a first black matrix surrounding the first color resist unit, wherein the thickness of the first color resist unit is less than the thickness of the second color resist unit; The second structure includes the first color resist unit and a first black matrix surrounding the first color resist unit, wherein the width of the first black matrix is ​​smaller than the width of the second black matrix. The third structure includes the first color resist unit and a first black matrix surrounding the first color resist unit. The first black matrix includes a first cutout and a black matrix block. In the direction from the first black matrix to the center of the first color resist unit, the first cutout passes through the first black matrix and extends to the first color resist unit. The fourth structure includes the first color resist unit, but the first color resist unit is not surrounded by a first black matrix.

3. The display panel according to claim 2, characterized in that, The first filter structure includes the fourth structure, and in the fourth structure, the thickness of the first color resist unit is less than the thickness of the second color resist unit.

4. The display panel according to claim 2, characterized in that, The first filter structure includes the third structure, and in the third structure, the first cutout and the black matrix block are alternately arranged.

5. The display panel according to claim 4, characterized in that, In the third structure, the opening area of ​​the first hollowed-out section is negatively correlated with the distance from the third structure to the center of the first display area.

6. The display panel according to claim 2, characterized in that, The third filter structure includes a third color blocking unit and a third black matrix surrounding the third color blocking unit; The third color resist unit has the same thickness as the second color resist unit.

7. The display panel according to claim 6, characterized in that, In the direction from the second display area to the first display area, the first filter structure and the third filter structure are alternately arranged.

8. The display panel according to claim 2, characterized in that, The first filter structure includes the second structure, and in the direction from the second display area to the first display area, the width of the first black matrix of the second structure gradually decreases.

9. The display panel according to claim 2, characterized in that, The first filter structure includes at least two of the first structure, the second structure, the third structure, and the fourth structure.

10. The display panel according to claim 9, characterized in that, The first filter structures of two adjacent ones are not the same.

11. The display panel according to claim 9, characterized in that, The first filter structure includes the second structure; The first color resist unit includes a first color resist unit and a second color resist unit with different filter colors. The difference between the distance of the first color resist unit and the second color resist unit to the center of the first display area is a preset value. The width of the first black matrix surrounding the first color resist unit is d1, and the width of the first black matrix surrounding the second color resist unit is d2, where d1 < d2.

12. The display panel according to claim 11, characterized in that, The preset value is less than or equal to 20 micrometers.

13. The display panel according to claim 11, characterized in that, The first color resist unit is a green color resist unit.

14. The display panel according to claim 1, characterized in that, The first filter structure includes a first color filter structure with a first color as the filter color, and a second color filter structure with a second color as the filter color; The viewing angle brightness decay rate of the filter structure corresponding to the first color is greater than the viewing angle brightness decay rate of the filter structure corresponding to the second color, wherein the light transmittance of the filter structure of the first color is greater than the light transmittance of the filter structure of the second color.

15. The display panel according to claim 14, characterized in that, The first filter structure includes a first black matrix, the first black matrix includes light-transmitting cutouts, and the first color resist unit fills the light-transmitting cutouts; The area of ​​the light-transmitting perforation in the first color filter structure is larger than the area of ​​the light-transmitting perforation in the second color filter structure.

16. The display panel according to claim 14, characterized in that, The thickness of the first color resist unit of the first color filter structure is less than the thickness of the first color resist unit of the second color filter structure.

17. The display panel according to claim 1, characterized in that, The first display area includes a light-transmitting display area and a transition display area, wherein the transition display area is located between the light-transmitting display area and the second display area; The light transmittance of the transition display area is less than that of the light transmittance of the light-transmitting display area.

18. A display device, characterized in that, The display device includes the display panel as described in any one of claims 1-17.

Images