A display panel, a driving circuit thereof and a display device

Abstract

The application discloses a display panel, a driving circuit thereof and a display device. The display panel has a special-shaped light-transmitting area and a display area. The display panel comprises a plurality of transition pixel units arranged in a special-shaped edge area adjacent to the display area and the special-shaped light-transmitting area. Each transition pixel unit comprises a gray-scale display sub-pixel and a gray-scale compensation sub-pixel. The gray-scale display sub-pixel is configured to emit light to display a target set gray scale, and the gray-scale compensation sub-pixel is configured to emit light to compensate the display of the gray-scale display sub-pixel. In the above manner, the display panel of the application divides the transition pixel unit into two independently controlled sub-pixels, which are separately displayed or combined to display, so as to relieve display attenuation and compensate after display attenuation, thereby improving the utilization rate of the light-emitting material of each sub-pixel, reducing the display difference between the special-shaped edge area and other main display areas, reducing the special-shaped display sawtooth, and improving the display uniformity.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and in particular to a display panel, its driving circuit, and a display device. Background Technology

[0002] Nowadays, with the development of display technology, displays with special shapes or irregular display areas have emerged to meet special display needs and broaden the application range of displays.

[0003] However, since the pixel units in a display screen are square in shape and arranged in an array, if a complete pixel unit is retained at the irregular edge of the display area, a jagged, undesirable display will generally appear. Furthermore, the light-emitting material in the pixel unit is typically a material whose brightness gradually decreases over time, and the jagged edges in the irregular display area will gradually worsen with accumulated use. Summary of the Invention

[0004] The main technical problem addressed by this application is to provide a display panel and its driving circuit and display device, which can solve the problem in the prior art that the jagged edges of the display screen in its irregular display area gradually worsen with the accumulation of usage time.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a display panel, wherein the display panel has an irregularly shaped light-transmitting area and a display area, and the display panel includes a plurality of transition pixel units distributed in an irregularly shaped edge region adjacent to the display area and the irregularly shaped light-transmitting area; wherein the transition pixel unit includes: a grayscale display sub-pixel and a grayscale compensation sub-pixel; the grayscale display sub-pixel is configured to emit light to display a target set grayscale, and the grayscale compensation sub-pixel is configured to emit light to compensate for the grayscale display sub-pixel.

[0006] The transition pixel unit includes a main anode layer, a main light-emitting layer disposed on the main anode layer, a compensation anode layer, and a compensation light-emitting layer disposed on the compensation anode layer. The main light-emitting layer and the compensation light-emitting layer correspond to the grayscale display sub-pixel and the grayscale compensation sub-pixel, respectively. The first included angle between the outer wall of the main light-emitting layer and the main anode layer is greater than the second included angle between the outer wall of the compensation light-emitting layer and the compensation anode layer.

[0007] The display panel includes multiple line arrangement units distributed in an array of irregularly shaped light-transmitting areas. The transition pixel unit also includes a main line sub-unit. The main anode layer is connected to the main line sub-unit, and the compensation anode layer is connected to the adjacent line arrangement unit.

[0008] The transition pixel unit also includes a compensation line subunit disposed between the grayscale display subpixel and the grayscale compensation subpixel. The compensation anode layer is connected to the compensation line subunit and is connected to the adjacent line arrangement unit via the compensation line subunit.

[0009] The multiple transition pixel units further include: a first type of transition pixel unit and a second type of transition pixel unit, divided according to the difference in target aperture ratio corresponding to the target set gray level; the first type of transition pixel unit includes: a first gray level display sub-pixel, a first compensation sub-line, and a first gray level compensation sub-pixel; wherein, the light-emitting area of ​​the first gray level display sub-pixel is greater than the light-emitting area of ​​the first gray level compensation sub-pixel; the second type of transition pixel unit includes: a second gray level display sub-pixel, a second sub-line, and a second gray level compensation sub-pixel; wherein, the light-emitting area of ​​the second gray level display sub-pixel is equal to the light-emitting area of ​​the second gray level compensation sub-pixel.

[0010] The display area surrounds the irregularly shaped light-transmitting area; the display panel also includes multiple main pixel units in the display area; along the direction from the display area to the irregularly shaped light-transmitting area, the total light-emitting area of ​​the transition pixel units gradually decreases; the total light-emitting area of ​​the first type of transition pixel units is greater than half of the light-emitting area of ​​the main pixel units, and the total light-emitting area of ​​the second type of transition pixel units is less than half of the light-emitting area of ​​the main pixel units.

[0011] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a driving circuit for driving the display panel as described in any of the above, wherein the control grayscale display sub-pixels emit light to display a target set grayscale; acquire the luminous intensity signal of the grayscale display sub-pixels; and, in response to the luminous intensity signal being lower than a set threshold, control the grayscale compensation sub-pixels to emit light to compensate the grayscale display sub-pixels for display.

[0012] The driving circuit is used to drive the display panel as described above, and specifically includes the following driving steps: controlling the first grayscale display sub-pixel to emit light to display the target set grayscale; acquiring the first luminous intensity signal of the first grayscale display sub-pixel; in response to the first luminous intensity signal being lower than a first threshold and higher than a second threshold, controlling the first grayscale compensation sub-pixel to emit light to compensate the first grayscale display sub-pixel; in response to the first luminous intensity signal being lower than the second threshold, controlling the first grayscale compensation sub-pixel and any one or more of the adjacent second grayscale display sub-pixels and second grayscale compensation sub-pixels to emit light to compensate the first grayscale display sub-pixel.

[0013] The driving circuit is used to drive the display panel as described above, and specifically includes the following driving steps: controlling the second grayscale display sub-pixel to emit light to display a target set grayscale; acquiring a second emitting intensity signal of the second grayscale display sub-pixel; in response to the second emitting intensity signal being lower than a third threshold, controlling the second grayscale compensation sub-pixel to emit light to display the target set grayscale; or, controlling the second grayscale display sub-pixel and the second grayscale compensation sub-pixel to emit light alternately to display the target set grayscale; acquiring a third emitting intensity signal of the second grayscale display sub-pixel and a fourth emitting intensity signal of the second grayscale compensation sub-pixel; in response to both the third and fourth emitting intensity signals being lower than the third threshold, controlling the second grayscale display sub-pixel and the second grayscale compensation sub-pixel to emit light simultaneously to display the target set grayscale; in response to the third or fourth emitting intensity signal being lower than the fourth threshold range but higher than the third threshold, controlling the first grayscale compensation sub-pixel to emit light to compensate for the adjacent second grayscale display sub-pixel or second grayscale compensation sub-pixel; in response to the sum of the third and fourth emitting intensity signals being lower than the third threshold, controlling the first grayscale compensation sub-pixel to emit light to compensate for the adjacent second type transition pixel unit.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a display device, wherein the display device includes a display panel and a driving circuit connected to the display panel; wherein the display panel is the display panel as described in any of the above claims; or, the display panel is the display panel as described in any of the above claims, and the driving circuit is the driving circuit as described in any of the above claims.

[0015] The beneficial effects of this application are as follows: Unlike the prior art, the display panel provided by this application divides the transition pixel units distributed in the irregular edge area adjacent to the display area and the irregular light-transmitting area into two independently controlled parts, namely grayscale display sub-pixels and grayscale compensation sub-pixels. This allows the grayscale display sub-pixels and grayscale compensation sub-pixels to be displayed individually or in combination, thereby mitigating the display attenuation of each sub-pixel and compensating for the display attenuation. Furthermore, the compensation display of different grayscale compensation sub-pixels to their corresponding grayscale display sub-pixels can be flexibly changed to suit different compensation scenarios and meet the differentiated attenuation rate of each sub-pixel. This allows for full utilization of the compensation display of each grayscale compensation sub-pixel to improve the utilization rate of the light-emitting material of each sub-pixel, thereby reducing overall power consumption and reducing the display difference between the irregular edge area and other main display areas, thus reducing the jaggedness of the irregular display and improving display uniformity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of each feature area of ​​the display panel according to one embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the simulation calculation of the target grayscale setting of each pixel unit in the P region in one embodiment. Figure 3 yes Figure 1 A schematic diagram of the structure of each pixel unit in the P region according to one embodiment; Figure 4 yes Figure 3 A detailed structural diagram of the central pixel unit; Figure 5 yes Figure 3 A schematic diagram of the structure of each feature region of the intermediate transition pixel unit in one embodiment; Figure 6 This is a schematic diagram of the structure of one embodiment of the display panel of this application; Figure 7 yes Figure 2 A schematic diagram of the structure of one embodiment of the driving traces of each pixel unit; Figure 8 This is a schematic diagram of one embodiment of the display device of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the structure of one embodiment of the display panel of this application. Figure 2 yes Figure 1 A schematic diagram illustrating the simulation calculation of the target grayscale setting for each pixel unit within the P region, representing one implementation method. Figure 3 yes Figure 1 A schematic diagram of the structure of each pixel unit in the P region according to one embodiment. Figure 4 yes Figure 3 A detailed structural schematic diagram of a portion of the pixel unit. In this embodiment, the display panel 1 has an irregularly shaped light-transmitting area a2 and a display area a1.

[0022] It is worth noting that in the field of display technology, in order to hide components such as front-facing cameras, rear-facing cameras, and sensors, irregularly shaped light-transmitting areas a2 (such as circular, elliptical, or any other reasonably shaped openings) are usually provided on the display panel 1. This is especially true for mobile phone back screens, where the display area is relatively small and there are multiple irregularly shaped openings or curved areas, i.e., irregularly shaped light-transmitting areas a2. The display area a1 will inevitably have jagged edges in the irregularly shaped edge area a3 adjacent to this light-transmitting area a2. Of course, in other embodiments, the display panel 1 can also be a punch-hole screen, a notch screen, or any other reasonably shaped display screen with irregularly shaped display areas, and the irregularly shaped light-transmitting area a2 can also correspond to an opaque irregularly shaped non-display area. This embodiment does not limit this.

[0023] Among them, the irregular edge area a3 of the display area a1 is usually simulated with grayscale transition effect by software, such as Figure 2 As shown, the grayscale levels of 0~255 are divided into 100 to 10 steps for transition. The more steps there are, the more uniform the grayscale transition will be, and the less jagged the display will be. Different grayscale levels are determined by the size of the opening area, which is usually adjusted by adjusting the size of the black matrix, that is, the size of the opening area. The luminescent material of the irregular light-transmitting area a2 will be wasted.

[0024] Due to the current shunting characteristics of the pixel driving current, the IR drop (voltage drop) varies in different areas. Mitigating IR drop involves adjusting the current in different areas to uniformly distribute the luminous intensity and compensate for brightness differences. This results in inconsistent luminous efficiency decay over time in different areas. When an irregularly shaped light-transmitting area a2 exists, this difference is further amplified, leading to increased jaggedness in the irregularly shaped edge area a3 of the display area a1. Simultaneously, areas that are not intended for display also emit light, increasing display power consumption. Therefore, the pixels in the irregularly shaped edge area a3 need special design to fully utilize the area, improve the utilization rate of the luminescent material, and reduce the display difference between the irregularly shaped edge area a3 and other main display areas a1.

[0025] Specifically, the display panel 1 includes a plurality of transition pixel units 10 distributed in the irregular edge region a3.

[0026] Specifically, the irregular edge region a3 is the boundary between the display area a1 and the irregular light-transmitting area a2, and it is distributed in a ring or strip shape. The coverage radius can be any reasonable number of pixels, such as 2, 3 or 4, and is determined according to the human eye resolution and the number of pixels per inch of the panel. This application does not limit this.

[0027] The transition pixel unit 10 specifically includes a grayscale display sub-pixel 101 and a grayscale compensation sub-pixel 102. The grayscale display sub-pixel 101 is used to drive light emission according to the target grayscale setting to undertake the normal image content display; the grayscale compensation sub-pixel 102 is used to perform brightness / color compensation on the grayscale display sub-pixel 101 to emit light additionally and compensate for edge light loss; or when the light emission intensity of the grayscale display sub-pixel 101 decreases below a set threshold, it alternately emits light to perform compensation display.

[0028] In the above scheme, the display panel 1 divides the transition pixel units 10 distributed in the irregular edge region a3 adjacent to the display area a1 and the irregular light-transmitting area a2 into two independently controlled parts: grayscale display sub-pixels 101 and grayscale compensation sub-pixels 102. This allows the grayscale display sub-pixels 101 and grayscale compensation sub-pixels 102 to be displayed individually or in combination, thereby mitigating the display attenuation of each sub-pixel and compensating for the attenuation. A smooth visual transition is achieved at the junction of the display area a1 and the irregular light-transmitting area a2, effectively mitigating the visual attenuation caused by the transition at the edge region a3. Problems such as sudden brightness changes, color shifts, and darkened edges caused by structural obstruction or optical design; and the compensation display of different gray-level compensation sub-pixels 102 to their corresponding gray-level display sub-pixels 101 can be flexibly changed to suit different compensation scenarios and meet the differentiated decay rate of each sub-pixel. In this way, the compensation display of each gray-level compensation sub-pixel 102 can be fully utilized to improve the utilization rate of the light-emitting material of each sub-pixel, thereby reducing the overall power consumption and reducing the display difference between the irregular edge area a3 and other main display areas a1, thereby reducing the jaggedness of the irregular display and improving the display uniformity.

[0029] In some embodiments, the grayscale display sub-pixel 101 specifically includes an R (red) grayscale sub-pixel 1011, a G (green) grayscale sub-pixel 1012, and a B (blue) grayscale sub-pixel 1013. The grayscale compensation sub-pixel 102 includes an R grayscale compensation sub-pixel 1021, a G grayscale compensation sub-pixel 1022, and a B grayscale compensation sub-pixel 1023. The R grayscale compensation sub-pixel 1021, G grayscale compensation sub-pixel 1022, and B grayscale compensation sub-pixel 1023 are respectively used to compensate for the R grayscale sub-pixel 1011, G grayscale sub-pixel 1012, and B grayscale sub-pixel 1023 of the same color. Compensation can be achieved using 013, or complementary colors can be used. For example, R grayscale compensation sub-pixel 1021 + B grayscale compensation sub-pixel 1023 can be used to compensate G grayscale sub-pixel 1012. The specific method depends on the arrangement of each RGB sub-pixel on the panel. Alternatively, in response to the higher usage rate of B grayscale sub-pixel 1013, B grayscale compensation sub-pixel 1023 and R grayscale compensation sub-pixel 1021 + G grayscale compensation sub-pixel 1022 can be used in combination to compensate B grayscale sub-pixel 1013, so as to adapt to the differentiated attenuation rate of B grayscale sub-pixel 1013. This application does not limit this.

[0030] Please continue to refer to the following: Figure 5 and Figure 6 ,in, Figure 5 yes Figure 3 A schematic diagram of the structure of each feature region of the intermediate transition pixel unit in one embodiment. Figure 6 This is a schematic diagram of the structure of one embodiment of the display panel of this application.

[0031] Specifically, the transition pixel unit 10 has a grayscale main display area b1 and a grayscale compensation display area b3 spaced apart, and the grayscale display sub-pixel 101 and the grayscale compensation sub-pixel 102 are respectively spaced apart in the grayscale main display area b1 and the grayscale compensation display area b3.

[0032] In some embodiments, the transition pixel unit 10 specifically includes a main anode layer 31, a main light-emitting layer 41, a compensation anode layer 32, and a compensation light-emitting layer 42. The main light-emitting layer 41 is disposed on the main anode layer 31, and the angle between the outer wall of the main light-emitting layer 41 and the upper surface of the main anode layer 31 is a first angle α. The compensation light-emitting layer 42 is disposed on the compensation anode layer 32, and the angle between the outer wall of the compensation light-emitting layer 42 and the upper surface of the compensation anode layer 32 is a second angle β, and the second angle β is smaller than the first angle α. This allows the emitted light from the compensation light-emitting layer 42 to enter the grayscale main display area b1 corresponding to the main light-emitting layer 41 as much as possible to supplement the brightness of the grayscale main display area b1. It also increases the overall light-emitting area of ​​the transition pixel unit 10 to avoid jagged edges caused by concentrated light-emitting areas when the light intensity decreases, thereby optimizing the transition effect.

[0033] A pixel definition layer 52, which can also be understood as an isolation column, is provided between the grayscale display sub-pixel 101 and the grayscale compensation sub-pixel 102. The first included angle α actually corresponds to the angle between the side of the pixel definition layer 52 facing the main light-emitting layer 41 and the upper surface of the main anode layer 31. The second included angle β corresponds to the angle between the other side of the pixel definition layer 52 facing the compensation light-emitting layer 42 and the upper surface of the compensation anode layer 32. This allows the emitted light from the compensation light-emitting layer 42 to enter the grayscale main display area b1 corresponding to the main light-emitting layer 41 along the other side of the pixel definition layer 52 facing the compensation light-emitting layer 42.

[0034] Optionally, the first included angle α is 60-75 degrees, and this application does not limit it.

[0035] Optionally, the second included angle β is 45-60 degrees, and this application does not limit it.

[0036] It is worth noting that the display panel 1 specifically includes an array substrate layer 51, a cathode layer 53, and a cover plate layer 54. The main anode layer 31, the compensation anode layer 32, and the pixel definition layer 52 are specifically disposed on the array substrate layer 51. The main light-emitting layer 41 and the compensation light-emitting layer 42 are respectively disposed on the main anode layer 31 and the compensation anode layer 32. The cathode layer 53 is disposed on the main light-emitting layer 41, the compensation light-emitting layer 42, and the pixel definition layer 52. The cover plate layer 54 is disposed on the cathode layer 53.

[0037] Please continue reading. Figure 7 , Figure 7 yes Figure 2 A schematic diagram of the structure of one embodiment of the driving traces for each pixel unit.

[0038] The array substrate layer 51 is provided with scan lines 61 and data lines 62 arranged in rows and columns to connect the main anode layer 31, the compensation anode layer 32 and the cathode layer 53 respectively, and to connect the main light-emitting layer 41 and the compensation light-emitting layer 42 via the main anode layer 31, the compensation anode layer 32 and the cathode layer 53, so as to realize the light-emitting drive of the main light-emitting layer 41 and the compensation light-emitting layer 42.

[0039] Understandably, since there is no need for light emission display in the irregularly shaped light-transmitting area a2, there is no need to set up a light-emitting layer. However, in order to facilitate the routing of the data line 62 and the scan line 61 and to meet the independent routing requirements of the grayscale compensation sub-pixel 102 in the adjacent transition pixel unit 10, the data line 62 and the scan line 61 are specifically extended to the irregularly shaped light-transmitting area a2.

[0040] In some embodiments, the display panel 1 further includes a plurality of line arrangement units 22 arrayed in the irregular light-transmitting area a2. The line arrangement unit 22 can be understood as a blank pixel unit without a light-emitting layer. The line arrangement unit 22 is each sub-line unit obtained by dividing the scan line 61 and data line 62 distributed in the irregular light-transmitting area a2 by each blank pixel unit.

[0041] Specifically, the transition pixel unit 10 further includes a main line sub-unit 103, which is a sub-line unit obtained by dividing the scan lines 61 and data lines 62 distributed in the irregular edge region a3 into units corresponding to each transition pixel unit 10. The main anode layer 31 is connected to the main line sub-unit 103 so that the grayscale display sub-pixel 101 is connected to the main line sub-unit 103 via the main anode layer 31; the compensation anode layer 32 is connected to the adjacent line arrangement unit 22 so that the grayscale compensation sub-pixel 102 is connected to the adjacent line arrangement unit 22 via the compensation anode layer 32; the main line sub-unit 103 and the line arrangement unit 22 correspond to different data lines 62, so that the grayscale display sub-pixel 101 and the grayscale compensation sub-pixel 102 can obtain different data signals at different times via different data lines 62 to achieve independent driving display.

[0042] Understandably, when there are grayscale display sub-pixels 101 and grayscale compensation sub-pixels 102 in the transition pixel unit 10, there will be two independent light-emitting areas. At this time, two independent driving circuits are needed to drive the grayscale display sub-pixels 101 and grayscale compensation sub-pixels 102 respectively. However, increasing the number of data lines by 62 will increase the driving channels of the corresponding driving circuit (not shown in the figure). Therefore, as... Figure 7 As shown, since there are blank pixel units in the irregular light-transmitting area a2, that is, the unit division area without a light-emitting layer, the data line 62 corresponding to the blank pixel unit, that is, the line arrangement unit 22, does not need to write the corresponding data signal in the blank row. Therefore, its corresponding data writing time period is blank. When there is only a regular main pixel unit 21, the conventional single data line 62 is sufficient to drive the display. When there is a transition pixel unit 10, the grayscale display sub-pixel 101 needs to be written with data according to the original single data line 62. The grayscale compensation sub-pixel 102 can be connected to another data line 62 corresponding to the blank pixel unit. That is, the data signal of the grayscale compensation sub-pixel 102 is written separately in the data writing time period corresponding to the blank pixel unit. The data writing of the grayscale compensation sub-pixel 102 is achieved without increasing the driving circuit driving channel and data writing time.

[0043] When the above-mentioned grayscale display sub-pixels 101 and grayscale compensation sub-pixels 102 division scheme and corresponding driving channel settings are adopted, the transition pixel units 10 at different positions can be matched with different compensation schemes according to the actual situation, so as to achieve flexibility and adaptability to the actual compensation situation of different transition pixel units 10. Even the compensation methods of different RGB sub-pixels in the same transition pixel unit 10 can be flexibly changed, thereby satisfying the differentiated decay rate of the B grayscale sub-pixels 1013, so as to make full use of the irregular edge area a3 to improve the utilization rate of luminescent materials.

[0044] Furthermore, in some embodiments, the transition pixel unit 10 specifically includes a compensation line sub-unit 104 disposed between the grayscale display sub-pixel 101 and the grayscale compensation sub-pixel 102. The compensation anode layer 32 is connected to the compensation line sub-unit 104 and connected to the adjacent line arrangement unit 22 via the compensation line sub-unit 104 to achieve independent driving display.

[0045] Specifically, the compensation line sub-unit 104 is located in the compensation line area b2 to separate the grayscale main display area b1 and the grayscale compensation display area b3.

[0046] For ease of explanation, taking a display panel 1 including a second scan line G2, a fourth data line D4, a fifth data line D5, a sixth data line D6, a seventh data line D7, an eighth data line D8, and a ninth data line D9, and a transition pixel unit 10 including a grayscale display sub-pixel 101, a grayscale compensation sub-pixel 102, and a compensation line sub-unit 104, the grayscale display sub-pixel 101 including an R grayscale sub-pixel 1011, a G grayscale sub-pixel 1012, and a B grayscale sub-pixel 1013, the grayscale compensation sub-pixel 102 including an R grayscale compensation sub-pixel 1021, a G grayscale compensation sub-pixel 1022, and a B grayscale compensation sub-pixel 1023, and the compensation line sub-unit 104 including a first compensation line sub-unit 1041, a second compensation line sub-unit 1042, and a third compensation line sub-unit 1043 as an example, it can be seen that the R grayscale sub-pixel 1011, G grayscale sub-pixel 1012, and B grayscale sub-pixel 1013... The R grayscale compensation sub-pixel 1021, G grayscale compensation sub-pixel 1022, and B grayscale compensation sub-pixel 1023 are all connected to the second scan line G2; the R grayscale sub-pixel 1011 is connected to the fourth data line D4, the R grayscale compensation sub-pixel 1021 is connected to the first compensation line sub-unit 1041, and is connected to the seventh data line D7 via the first compensation line sub-unit 1041; the G grayscale sub-pixel 1012 is connected to the fifth data line D5, the G grayscale compensation sub-pixel 1022 is connected to the second compensation line sub-unit 1042, and is connected to the eighth data line D8 via the second compensation line sub-unit 1042; the B grayscale sub-pixel 1013 is connected to the sixth data line D6, the B grayscale compensation sub-pixel 1023 is connected to the third compensation line sub-unit 1043, and is connected to the ninth data line D9 via the third compensation line sub-unit 1043; the other transition pixel units 10 are similar and will not be described in detail here.

[0047] This application also provides a driving circuit (not shown) for driving the display panel 1 as described in any of the above claims. In this embodiment, the driving circuit is used to control the grayscale display sub-pixel 101 to emit light to display the target set grayscale, that is, according to the target set grayscale in the image data, a corresponding driving current / voltage is applied to the grayscale display sub-pixel 101 so that the grayscale display sub-pixel 101 emits light at the expected brightness and presents the correct image content.

[0048] Furthermore, the current luminous intensity signal of the grayscale display sub-pixel 101 can be detected and acquired, for example, by embedding a micro photodiode near the grayscale display sub-pixel 101 to detect the local light intensity in real time; or, by using the threshold voltage drift of the driving TFT (Thin Film Transistor) to infer the luminous state; or, by indirectly estimating the actual luminous efficiency by monitoring the driving current (calibration required); or, by providing regional brightness feedback from the under-display camera or the bezel sensor array, which is not limited in this application.

[0049] Furthermore, when the current luminous intensity signal of the grayscale display sub-pixel 101 is detected to be lower than a set threshold, the driving circuit controls the grayscale compensation sub-pixel 102 to emit light to compensate the grayscale display sub-pixel 101, thereby dynamically adjusting the overall luminous brightness of the transition pixel unit 10. This achieves the effect of mitigating the display attenuation of each sub-pixel and compensating for the display attenuation, making full use of the compensation display of each grayscale compensation sub-pixel 102 to improve the utilization rate of the luminous material of each sub-pixel, and reducing the display difference between the irregular edge area a3 and other display areas a1, reducing the jaggedness of the irregular display, and improving the display uniformity.

[0050] It is worth noting that the threshold value can be a fixed calibration value obtained by fitting relevant data to ensure good light emission effect in the actual driving display scenario, or it can be a dynamic value that is adaptively adjusted according to the target gray level, temperature, and aging state. This application does not limit it in this regard.

[0051] In some embodiments, the plurality of transition pixel units 10 further includes: a first type of transition pixel unit 11 and a second type of transition pixel unit 12 divided according to the target aperture ratio difference corresponding to the target set gray level.

[0052] It is worth noting that, in order to minimize display jagged edges, the irregular edge area a3 in the display area a1 is simulated with software to create a grayscale transition effect. The grayscale levels 0-255 are divided into 100-10 steps for transition. That is, each transition pixel unit 10 corresponds to a target grayscale level simulated by the software. Different target grayscale levels are determined by the size of the opening area of ​​the transition pixel unit 10, i.e., the aperture ratio. The target grayscale levels simulated by the transition pixel units 10 at different positions are different, and their corresponding target aperture ratios will also be different.

[0053] To adapt different compensation schemes to the transition pixel units 10 with different target aperture ratios, the first type of transition pixel unit 11 and the second type of transition pixel unit 12 can be divided according to the difference in target aperture ratio, such as whether the target aperture ratio is greater than a set threshold as the distinguishing condition.

[0054] The first type of transition pixel unit 11 includes: a first grayscale display sub-pixel 111, a first compensation sub-line 113, and a first grayscale compensation sub-pixel 112. The light-emitting area of ​​the first grayscale display sub-pixel 111 is greater than the light-emitting area of ​​the first grayscale compensation sub-pixel 112, that is, the projected area of ​​the first grayscale display sub-pixel 111 in the display area a1 is greater than the projected area of ​​the first grayscale compensation sub-pixel 112 in the display area a1.

[0055] The second type of transition pixel unit 12 includes: a second grayscale display sub-pixel 121, a second sub-line 123, and a second grayscale compensation sub-pixel 122, and the light-emitting area of ​​the second grayscale display sub-pixel 121 is equal to the light-emitting area of ​​the second grayscale compensation sub-pixel 122.

[0056] It is worth noting that the light-emitting area corresponds to the projected area of ​​the corresponding sub-pixel in the display area a1, and different light-emitting areas will also correspond to different aperture area sizes, i.e., different target aperture ratios. When the first type of transition pixel unit 11 and the second type of transition pixel unit 12 are divided into sub-pixels with different light-emitting areas, the corresponding driving display and compensation schemes can be flexibly set to further meet the differentiated attenuation rate of each sub-pixel, make full use of the compensation display of each gray-level compensation sub-pixel 102 to improve the utilization rate of the light-emitting material of each sub-pixel, and reduce the display difference between the irregular edge area a3 and other main display areas a1, thereby reducing the jaggedness of the irregular display and improving the display uniformity.

[0057] In some embodiments, the display area a1 surrounds the irregularly shaped light-transmitting area a2, and the display panel 1 further includes a plurality of main pixel units 21 in the display area a1, namely, main pixel units 21 that realize conventional driving display.

[0058] In particular, along the direction from the display area a1 to the irregular light-transmitting area a2, the total light-emitting area of ​​the transition pixel unit 10, that is, the projected area of ​​the multiple transition pixel units 10 in the display area a1, gradually decreases, and the total light-emitting area of ​​the first type of transition pixel unit 11 is greater than half of the light-emitting area of ​​the main pixel unit 21, while the total light-emitting area of ​​the second type of transition pixel unit 12 is less than half of the light-emitting area of ​​the main pixel unit 21.

[0059] This application also provides a driving circuit for driving the display panel 1 as described in any of the above claims. In this embodiment, the driving circuit is further configured to control the first grayscale display sub-pixel 111 to emit light to display a target set grayscale, and to detect and acquire a first luminous intensity signal of the first grayscale display sub-pixel 111, so that when the first luminous intensity signal is lower than a first threshold and higher than a second threshold, the first grayscale compensation sub-pixel 112 is controlled to emit light to compensate for the first grayscale display sub-pixel 111.

[0060] In some embodiments, when the first type of transition pixel unit 11 and the second type of transition pixel unit 12 are arranged adjacent to each other, the driving circuit can, upon determining that the first light intensity signal is lower than the second threshold, specifically control one or more of the first gray level compensation sub-pixel 112 and the adjacent second gray level display sub-pixel 121 and second gray level compensation sub-pixel 122 to emit light to compensate the first gray level display sub-pixel 111. That is, when the compensation capability of the first gray level compensation sub-pixel 112 is limited, the adjacent second gray level display sub-pixel 121 and / or second gray level compensation sub-pixel 122 can be used as compensation pixels to provide additional compensation.

[0061] In some embodiments, the driving circuit is further configured to control the second grayscale display sub-pixel 121 to emit light to display the target set grayscale, and to detect and acquire the second emitting intensity signal of the second grayscale display sub-pixel 121, so as to control the second grayscale compensation sub-pixel 122 to emit light to display the target set grayscale when it is determined that the second emitting intensity signal is lower than a third threshold.

[0062] In other embodiments, the driving circuit is also used to control the second grayscale display sub-pixel 121 and the second grayscale compensation sub-pixel 122 to emit light alternately to display the target set grayscale. That is, the second grayscale display sub-pixel 121 and the second grayscale compensation sub-pixel 122 are used alternately as grayscale transition pixels to ensure that the attenuation degree of each sub-pixel is relatively uniform, thereby improving the utilization rate of the light-emitting material of each sub-pixel, reducing the display difference between the irregular edge area a3 and other display areas a1, and improving display uniformity.

[0063] In other embodiments, the driving circuit is also used to acquire the third luminous intensity signal of the second grayscale display sub-pixel 121 and the fourth luminous intensity signal of the second grayscale compensation sub-pixel 122, so that when it is determined that both the third luminous intensity signal and the fourth luminous intensity signal are lower than the third threshold, the second grayscale display sub-pixel 121 and the second grayscale compensation sub-pixel 122 emit light simultaneously to display the target set grayscale and compensate for its attenuation.

[0064] In some embodiments, when the first type of transition pixel unit 11 and the second type of transition pixel unit 12 are arranged adjacent to each other, when the driving circuit determines that the third light intensity signal or the fourth light intensity signal is lower than the fourth threshold range and higher than the third threshold, that is, the compensation required for the second grayscale display sub-pixel 121 or the second grayscale compensation sub-pixel 122 is relatively minor, the driving circuit may further control the first grayscale compensation sub-pixel 112 with a smaller light-emitting area to emit light to compensate the adjacent second grayscale display sub-pixel 121 or the second grayscale compensation sub-pixel 122, so as to improve the utilization rate of the light-emitting material of each sub-pixel and reduce the overall power consumption.

[0065] In other embodiments, the driving circuit may further control the first grayscale compensation sub-pixel 112 to emit light to compensate the adjacent second type of transition pixel unit 12 when the sum of the third luminous intensity signal and the fourth luminous intensity signal is lower than a third threshold.

[0066] This application also provides a display device; please refer to [link / reference]. Figure 8 , Figure 8 This is a schematic diagram of one embodiment of the display device of this application. In this embodiment, the display device 70 includes a display panel 71 and a driving circuit 72 connected to the display panel 71.

[0067] It should be noted that the display panel 71 described in this embodiment is the display panel 1 described in any of the above embodiments. Please refer to the following for details. Figures 1-7 The relevant textual content will not be elaborated upon here.

[0068] In other embodiments, the display panel 71 described in this embodiment is the display panel 1 described in any of the above embodiments, and the driving circuit 72 is the driving circuit described in any of the above embodiments. Please refer to the following for details. Figures 1-7 The relevant textual content will not be elaborated upon here.

[0069] The beneficial effects of this application are as follows: Unlike the prior art, the display panel provided by this application divides the transition pixel units distributed in the irregular edge area adjacent to the display area and the irregular light-transmitting area into two independently controlled parts, namely grayscale display sub-pixels and grayscale compensation sub-pixels. This allows the grayscale display sub-pixels and grayscale compensation sub-pixels to be displayed individually or in combination, thereby mitigating the display attenuation of each sub-pixel and compensating for the display attenuation. Furthermore, the compensation display of different grayscale compensation sub-pixels to their corresponding grayscale display sub-pixels can be flexibly changed to suit different compensation scenarios and meet the differentiated attenuation rate of each sub-pixel. This allows for full utilization of the compensation display of each grayscale compensation sub-pixel to improve the utilization rate of the light-emitting material of each sub-pixel, thereby reducing overall power consumption and reducing the display difference between the irregular edge area and other main display areas, thus reducing the jaggedness of the irregular display and improving display uniformity.

[0070] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel has an irregularly shaped light-transmitting area and a display area, and the display panel includes a plurality of transition pixel units distributed in an irregularly shaped edge region adjacent to the display area and the irregularly shaped light-transmitting area; The transition pixel unit includes a grayscale display sub-pixel and a grayscale compensation sub-pixel; the grayscale display sub-pixel is configured to emit light to display a target set grayscale, and the grayscale compensation sub-pixel is configured to emit light to compensate for the grayscale display sub-pixel. The transition pixel unit includes a main anode layer, a main light-emitting layer disposed on the main anode layer, a compensation anode layer, and a compensation light-emitting layer disposed on the compensation anode layer. The main light-emitting layer and the compensation light-emitting layer correspond to the grayscale display sub-pixel and the grayscale compensation sub-pixel, respectively. The first angle between the outer wall of the main light-emitting layer and the main anode layer is greater than the second angle between the outer wall of the compensation light-emitting layer and the compensation anode layer.

2. The display panel according to claim 1, characterized in that, The display panel includes multiple line arrangement units distributed in the array of the irregular light-transmitting area. The transition pixel unit also includes a main line sub-unit. The main anode layer is connected to the main line sub-unit, and the compensation anode layer is connected to the adjacent line arrangement unit.

3. The display panel according to claim 2, characterized in that, The transition pixel unit further includes a compensation line subunit disposed between the grayscale display subpixel and the grayscale compensation subpixel. The compensation anode layer is connected to the compensation line subunit and is connected to the adjacent line arrangement unit via the compensation line subunit.

4. A display panel, characterized in that, The display panel has an irregularly shaped light-transmitting area and a display area, and the display panel includes a plurality of transition pixel units distributed in an irregularly shaped edge region adjacent to the display area and the irregularly shaped light-transmitting area; The plurality of transition pixel units further include: a first type of transition pixel unit and a second type of transition pixel unit divided according to the difference in target aperture ratio corresponding to the target set gray level; The first type of transition pixel unit includes: a first grayscale display sub-pixel, a first compensation sub-line, and a first grayscale compensation sub-pixel; wherein, the light-emitting area of ​​the first grayscale display sub-pixel is greater than the light-emitting area of ​​the first grayscale compensation sub-pixel. The second type of transition pixel unit includes: a second grayscale display sub-pixel, a second sub-line, and a second grayscale compensation sub-pixel; wherein the light-emitting area of ​​the second grayscale display sub-pixel is equal to the light-emitting area of ​​the second grayscale compensation sub-pixel.

5. The display panel according to claim 4, characterized in that, The display area surrounds the irregularly shaped light-transmitting area; the display panel also includes a plurality of main pixel units in the display area; along the direction from the display area to the irregularly shaped light-transmitting area, the total light-emitting area of ​​the transition pixel units gradually decreases; the total light-emitting area of ​​the first type of transition pixel units is greater than half of the light-emitting area of ​​the main pixel units, and the total light-emitting area of ​​the second type of transition pixel units is less than half of the light-emitting area of ​​the main pixel units.

6. A driving circuit for driving the display panel according to any one of claims 1-3, characterized in that, The driving circuit is used for: Control the grayscale display sub-pixels to emit light in order to display the target set grayscale; Obtain the luminous intensity signal of the grayscale display sub-pixel; In response to the light intensity signal being lower than a set threshold, the grayscale compensation sub-pixel is controlled to emit light to compensate the grayscale display sub-pixel for display.

7. A driving circuit, characterized in that, The driving circuit is used to drive the display panel according to claim 4 or 5, and specifically includes the following driving steps: Control the first grayscale display sub-pixel to emit light in order to display the target set grayscale; Obtain the first luminous intensity signal of the first grayscale display sub-pixel; In response to the first luminous intensity signal being lower than a first threshold and higher than a second threshold, the first grayscale compensation sub-pixel is controlled to emit light to compensate the first grayscale display sub-pixel for display. In response to the first luminous intensity signal being lower than the second threshold, control the first grayscale compensation sub-pixel and any one or more of the adjacent second grayscale display sub-pixels and second grayscale compensation sub-pixels to emit light to compensate the first grayscale display sub-pixel for display.

8. A driving circuit, characterized in that, The driving circuit is used to drive the display panel according to claim 4 or 5, and specifically includes the following driving steps: Control the second grayscale display sub-pixel to emit light in order to display the target set grayscale; Obtain the second luminous intensity signal of the second grayscale display sub-pixel; In response to the second luminous intensity signal being lower than the third threshold, the second grayscale compensation sub-pixel is controlled to emit light to display the target set grayscale; Alternatively, the second grayscale display sub-pixel and the second grayscale compensation sub-pixel can be controlled to emit light alternately to display the target grayscale setting; Acquire the third luminous intensity signal of the second grayscale display sub-pixel and the fourth luminous intensity signal of the second grayscale compensation sub-pixel; In response to the fact that both the third luminous intensity signal and the fourth luminous intensity signal are lower than the third threshold, the second grayscale display sub-pixel and the second grayscale compensation sub-pixel are controlled to emit light simultaneously to display the target set grayscale; In response to the third luminous intensity signal or the fourth luminous intensity signal being below the fourth threshold range and above the third threshold, the first grayscale compensation sub-pixel is controlled to emit light to compensate the adjacent second grayscale display sub-pixel or the second grayscale compensation sub-pixel. In response to the sum of the third luminous intensity signal and the fourth luminous intensity signal being lower than the third threshold, the first grayscale compensation sub-pixel is controlled to emit light to compensate the display of the adjacent second type of transition pixel unit.

9. A display device, characterized in that, The display device includes a display panel and a driving circuit connected to the display panel; The display panel is the display panel as described in any one of claims 1-5.

10. The display panel according to claim 9, characterized in that, When the display panel is the display panel as described in any one of claims 1-3, the driving circuit is the driving circuit as described in claim 6.

11. The display panel according to claim 9, characterized in that, When the display panel is the display panel as described in any one of claims 4-5, the driving circuit is the driving circuit as described in any one of claims 7-8.

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