Display modules and display devices

Abstract

This invention discloses a display module and a display device. The display module includes multiple sub-pixels, at least one brightness detection module, and at least one signal conversion module. The multiple sub-pixels are arranged in an array. The brightness detection module is located along the row and / or column direction of the sub-pixels and is positioned on one side of each sub-pixel. The brightness detection module is used to detect the actual brightness sensing signal of at least one sub-pixel. The signal conversion module is electrically connected to the brightness detection module and is used to obtain a voltage signal corresponding to the actual brightness sensing signal. This invention can improve the accuracy of brightness detection and simplify the brightness detection method while reducing reliance on external devices.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display module and a display device. Background Technology

[0002] Typically, OLED screens suffer from uneven brightness (Mura). To eliminate Mura, existing methods use the Demura algorithm, which involves taking pictures with a camera, processing the brightness data of each pixel, and then sending it to the driver chip. The driver chip then uses an algorithm to compensate for the differences in brightness among the pixels, bringing the brightness of each pixel to the same level. However, the method of taking pictures with a camera is highly dependent on the external devices of the display device.

[0003] Furthermore, during the use of OLED screens, the usage of each pixel varies. Some pixels display the same high-brightness static image for extended periods, causing the organic materials in these pixels to age faster than other areas, resulting in burn-in. Current methods use a de-burn-in (DBI) algorithm to record brightness decay data from a small number of sample screens, process the data, and store it in the driver chip. Brightness compensation is then performed over time. However, this method is not precise enough, resulting in low accuracy in brightness compensation and poor display performance. Utility Model Content

[0004] This invention provides a display module and display device that improves the brightness compensation accuracy of the display panel, simplifies the brightness detection method, and enhances the display effect of the display panel while reducing reliance on external devices.

[0005] According to one aspect of the present invention, a display module is provided, comprising:

[0006] Multiple sub-pixels, and an array of the multiple sub-pixels arranged;

[0007] At least one brightness detection module is provided, along the row direction and / or column direction of the sub-pixel arrangement, the brightness detection module is disposed on one side of the sub-pixel, and the brightness detection module is used to detect the actual brightness sensing signal of at least one of the sub-pixels;

[0008] At least one signal conversion module is provided, which is electrically connected to the brightness detection module and is used to obtain a voltage signal corresponding to the actual brightness sensing signal based on the actual brightness sensing signal.

[0009] Optionally, the brightness detection module includes a photoelectric sensing unit;

[0010] The photoelectric sensing unit includes a first electrode, a first hole-functional layer, a photosensitive layer, a first electron-functional layer, and a second electrode stacked together.

[0011] The sub-pixel includes a third electrode, a second hole-functional layer, a light-emitting material layer, a second electronic functional layer, and a fourth electrode stacked together;

[0012] Wherein, the second hole functional layer and the first hole functional layer are in the same layer, and / or, the second electron functional layer and the first electron functional layer are in the same layer.

[0013] Optionally, the material of the second hole functional layer is the same as the material of the first hole functional layer, and / or the material of the second electron functional layer is the same as the material of the first electron functional layer.

[0014] Optionally, the first electrode and the third electrode are in the same layer and insulated from each other, and the second electrode and the fourth electrode are in the same layer and insulated from each other.

[0015] Optionally, the display module includes a display panel;

[0016] The display panel includes multiple display areas, and each display area is provided with at least one of the brightness detection modules.

[0017] Optionally, a brightness detection module is provided on one side of each of the sub-pixels.

[0018] Optionally, the signal conversion module includes a first signal conversion unit and a second signal conversion unit;

[0019] The first terminal of the first signal conversion unit is connected to the brightness detection module, and the first signal conversion unit is used to convert the actual brightness sensing signal output by the brightness detection module into an analog voltage signal corresponding to the actual brightness sensing signal; the second terminal of the first signal conversion unit is connected to the second signal conversion unit, and the second signal conversion unit is used to convert the analog voltage signal into a digital voltage signal.

[0020] Optionally, the display module includes a display panel;

[0021] The display panel includes an array substrate, which is located on one side of the sub-pixels and the brightness detection module;

[0022] The display panel also includes a display area and a non-display area, with the brightness detection module located in the display area and the signal conversion module located in the non-display area.

[0023] According to another aspect of the present invention, a display device is provided, including the display module provided in any embodiment of the present invention;

[0024] The display device also includes a driver module;

[0025] The driving module is connected to the signal conversion module and the sub-pixel respectively. The driving module is used to receive the voltage signal transmitted by the signal conversion module, calculate the compensation data of the sub-pixel according to the difference between the target voltage corresponding to the preset brightness of the sub-pixel and the voltage signal, and perform brightness compensation on the sub-pixel according to the compensation data.

[0026] Optionally, the signal conversion module is integrated into the driver module.

[0027] The technical solution of this utility model embodiment includes a display module comprising multiple sub-pixels, at least one brightness detection module, and at least one signal conversion module. The brightness detection module is positioned on one side of each sub-pixel, and the signal conversion module is connected to it. The brightness detection module detects the actual brightness of the sub-pixel, converts it into a corresponding actual brightness sensing signal, and transmits it to the signal conversion module. The signal conversion module converts the actual brightness sensing signal into a corresponding usable voltage signal. In other words, the brightness detection module can directly detect the actual brightness of the sub-pixel, reducing reliance on external devices and avoiding errors introduced by external device imaging, thus improving the accuracy of brightness detection and simplifying the brightness detection method. Furthermore, during subsequent brightness compensation, the compensation can be based on the voltage signal corresponding to the actual brightness sensing signal. This avoids the compensation errors caused by the mismatch between the basic data and the display panel in existing methods that rely on sample screen brightness attenuation data. The basic data for brightness compensation corresponds to the display panel, allowing for targeted and accurate brightness compensation of the display panel. This improves the compensation accuracy and display uniformity of the sub-pixel, ultimately enhancing the display panel's overall display effect.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a display module provided in an embodiment of the present utility model;

[0031] Figure 2This is a schematic diagram of another display module provided in an embodiment of the present utility model;

[0032] Figure 3 A schematic diagram illustrating the connection relationship between a first signal conversion unit and a photoelectric sensing unit provided in an embodiment of this utility model;

[0033] Figure 4 A cross-sectional view of a display panel provided for an embodiment of this utility model;

[0034] Figure 5 A schematic diagram of the film layer structure connection between a photoelectric sensing unit and a sub-pixel provided for an embodiment of this utility model;

[0035] Figure 6 This is a schematic diagram of another display module provided in an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present utility model. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and their variations, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] This utility model embodiment provides a display module. Figure 1 This is a schematic diagram of the structure of a display module provided in an embodiment of the present utility model. See also: Figure 1 The display module 600 includes multiple sub-pixels 400, at least one brightness detection module 10, and at least one signal conversion module 20.

[0040] The display panel 500 is composed of multiple sub-pixels 400 arranged in an array. At least one brightness detection module 10 is positioned along the row and / or column directions of the sub-pixels 400, ensuring that the brightness detection module 10 does not affect the display effect of the sub-pixels 400. The brightness detection module 10 is positioned on one side of each sub-pixel 400, allowing it to utilize the space between adjacent sub-pixels 400 without increasing the area of ​​the display panel 500, thus achieving miniaturization of the display panel 500. The brightness detection module 10 is used to detect the actual brightness sensing signal of at least one sub-pixel 400. A signal conversion module 20 is electrically connected to the brightness detection module 10 and is used to obtain a voltage signal corresponding to the actual brightness sensing signal.

[0041] The signal conversion module 20 and the brightness detection module 10 are connected one-to-one. The display module 600 includes a display panel 500, sub-pixels 400 and the brightness detection module 10 disposed on the display panel 500.

[0042] Figure 1 An exemplary arrangement of multiple brightness detection modules 10 along the row direction of sub-pixels 400 is provided, but this is not intended to limit the present invention. In other embodiments, the brightness detection modules 10 may also be arranged along the column direction of sub-pixels 400. The display panel 500 may include sub-pixels 400 of at least one emitting color. In some embodiments, the display panel 500 may also include sub-pixels 400 of at least two emitting colors, for example, at least two of red light sub-pixels 400, green light sub-pixels 400, and blue light sub-pixels 400.

[0043] Specifically, the brightness detection module 10 is disposed on one side of the sub-pixel 400, enabling the brightness detection module 10 to detect the actual brightness of the sub-pixel 400 in real time and transmit the actual brightness sensing signal corresponding to the actual brightness to the signal conversion module 20. This actual brightness sensing signal can be a micro-current signal. Furthermore, the signal conversion module 20 amplifies the actual brightness sensing signal and converts it into a corresponding voltage signal to improve the accuracy of brightness detection.

[0044] It is understandable that the actual brightness sensing signal can be positively correlated with the actual brightness. For example, when the actual brightness of sub-pixel 400 is brighter, the amplitude of the corresponding actual brightness sensing signal increases synchronously.

[0045] In existing technologies, image acquisition devices, such as cameras, are typically required outside the display panel to capture image data. Therefore, existing display panels are highly dependent on external devices for data compensation. In this embodiment, however, the actual brightness of sub-pixels can be directly detected by the brightness detection module, eliminating the need for external devices. This avoids errors introduced by external devices and ensures accurate brightness detection. Furthermore, existing technologies typically use the DBI algorithm to predict the compensation value of the current frame based on historical attenuation data (sample data), thereby adjusting the pixel's driving voltage or grayscale value to compensate the display panel. However, due to differences in manufacturing processes, the precision of display panels varies, resulting in lower accuracy for brightness compensation in existing technologies. The display panel provided in this embodiment allows the brightness detection module to detect the actual brightness of sub-pixels in real time. Therefore, it provides real-time actual brightness sensing signals for subsequent brightness compensation, enabling brightness compensation based on the voltage signals corresponding to the actual brightness sensing signals. Consequently, the brightness compensation accuracy of the display panel is higher.

[0046] The technical solution of this embodiment of the utility model involves setting a display module 600 including multiple sub-pixels 400, at least one brightness detection module 10, and at least one signal conversion module 20. The brightness detection module 10 is positioned on one side of each sub-pixel 400, and the signal conversion module 20 is connected to it. The brightness detection module 10 can detect the actual brightness of the sub-pixel 400, convert it into a corresponding actual brightness sensing signal, and transmit it to the signal conversion module 20. The signal conversion module 20 amplifies the actual brightness sensing signal and converts it into a corresponding usable voltage signal. In other words, the brightness detection module 10 can directly detect the actual brightness of the sub-pixel 400, reducing reliance on external devices, avoiding errors introduced by external device imaging, improving the accuracy of brightness detection, and simplifying the brightness detection method. Furthermore, when performing brightness compensation later, it can be based on the voltage signal corresponding to the actual brightness sensing signal. This avoids the compensation error caused by the mismatch between the basic data for brightness compensation and the display panel, which is a problem in the existing technology that uses brightness compensation based on the brightness attenuation data of the sample screen. This ensures that the basic data for brightness compensation corresponds to the display panel, allowing for targeted and accurate brightness compensation of the display panel. This, in turn, helps improve the compensation accuracy and display uniformity of the sub-pixel 400, thereby enhancing the display effect of the display panel.

[0047] See also Figure 1 The adjacent sub-pixels along the 400-row direction emit different colors. For example, the first sub-pixel 400 emits red light, the second sub-pixel 400 emits green light, and the third sub-pixel 400 emits blue light.

[0048] Figure 2 See the schematic diagram of another display module provided in this embodiment of the present invention. Figure 2 Based on the above embodiments, optionally, the brightness detection module 10 includes a photoelectric sensing unit 11, and multiple photoelectric sensing units 11 are arranged along the row direction of the sub-pixel 400.

[0049] The photoelectric sensing unit 11 is a miniature photoelectric conversion device that can be integrated inside the display panel. It is used to directly detect the luminance of the sub-pixel 400 and convert it into an electrical signal (such as a current signal), and can provide real-time data for subsequent brightness compensation. The photoelectric sensing unit 11 can be, for example, a photodiode.

[0050] See also Figure 2 Optionally, the signal conversion module 20 includes a first signal conversion unit 21 and a second signal conversion unit 22.

[0051] The first signal conversion unit 21 is connected to the brightness detection module 10 at its first end. The first signal conversion unit 21 converts the actual brightness sensing signal output by the brightness detection module into an analog voltage signal corresponding to the actual brightness sensing signal. The second end of the first signal conversion unit 21 is connected to the second signal conversion unit 22, which converts the analog voltage signal into a digital voltage signal. For example, the first signal conversion unit 21 may include a transimpedance amplifier, and the second signal conversion unit 22 may include an analog-to-digital converter. Figure 2 The diagram shows three sub-pixels 400 in the display panel 500 that correspond to three brightness detection modules 10 and three signal conversion modules 20, respectively. The brightness detection modules 10 and signal conversion modules 20 corresponding to the remaining sub-pixels 400 are not shown.

[0052] See also Figure 1 and Figure 2 Optionally, a brightness detection module 10 is provided on one side (e.g., the right side of the sub-pixel 400), and each brightness detection module 10 corresponds to a signal conversion module 20. By setting a one-to-one correspondence between the brightness detection module 10 and the sub-pixel 400, it can be ensured that each sub-pixel 400 is equipped with a brightness detection module 10 for brightness detection, thus ensuring the accuracy of brightness detection and subsequent brightness compensation.

[0053] It is understandable that the brightness detection module 10 can be located in the display area of ​​the display panel 500, and the signal conversion module 20 can be located in the non-display area of ​​the display panel 500. By placing the brightness detection module 10 in the display area, the brightness of the sub-pixel 400 can be directly measured, avoiding optical crosstalk. By placing the signal conversion module 20 in the non-display area, the occupancy of the pixel aperture ratio can be reduced, and more wiring space can be provided for the signal conversion circuit.

[0054] Figure 3 A schematic diagram illustrating the connection relationship between a first signal conversion unit and a photoelectric sensing unit provided in an embodiment of this utility model is shown below. Figure 3 The first signal conversion unit 21 may include a non-inverting input terminal, an inverting input terminal, a first power supply terminal, and a second power supply terminal. The second electrode of the photoelectric sensing unit 11 is connected to the inverting input terminal of the first signal conversion unit 21, and the first electrode of the photoelectric sensing unit 11 is connected to the non-inverting input terminal of the first signal conversion unit 21. The first power supply terminal of the first signal conversion unit 21 is connected to the supply voltage VCC, and the second power supply terminal of the first signal conversion unit 21 is grounded and connected to the non-inverting input terminal. The feedback resistor Rf is connected between the inverting input terminal and the output terminal Vout. The feedback resistor Rf is used to adjust the conversion gain. The current I flowing through the photoelectric sensing unit 11 is in the following direction: Figure 3 As shown by the dashed arrow, the current signal output by the photoelectric sensing unit 11 is accurately converted into an analog voltage signal, while suppressing noise and oscillation, providing a clean analog input for the subsequent second signal conversion unit 22.

[0055] In some embodiments, the power supply connected to the first electrode and the power supply connected to the second electrode of the photoelectric sensing unit 11 can be set as separate power supplies; in other embodiments, a photovoltaic power supply can be set in the display panel to power the photoelectric sensing unit 11. The photovoltaic power supply can generate electrical energy using the light emitted by the sub-pixel 400 to power the photoelectric sensing unit 11.

[0056] Optionally, the photoelectric sensing unit 11 may include a photodiode. The first electrode of the photodiode is connected to the first electrode of the photoelectric sensing unit 11, and the second electrode of the photodiode is connected to the second electrode of the photoelectric sensing unit 11. Optionally, the first electrode of the photodiode is the anode, and the second electrode is the cathode.

[0057] The technical solution of this utility model embodiment, by setting a first signal conversion unit 21 and a second signal conversion unit 22, allows the first signal conversion unit 21 to amplify the weak current signal of the actual brightness sensing signal and convert it into a corresponding analog voltage signal. The second signal conversion unit 22 can convert the analog voltage signal into a digital voltage signal, which has strong anti-interference ability, can improve the accuracy and stability of signal transmission, and the digital voltage signal is easily recognized by the driving module in the subsequent compensation process, without the need for complex circuits, making the structure of the display panel simple.

[0058] Figure 4 This is a cross-sectional view of a display panel provided in an embodiment of the present utility model. Figure 2 The cross-sectional structure of the display panel 500 shown along the cutting line BB' is shown in the figure. Figure 4Based on the above embodiments, optionally, the display panel 500 further includes an array substrate 700, which is located on one side of the sub-pixel 400 and the brightness detection module 10. Specifically, along the thickness direction of the display panel 500, the array substrate 700 is located on one side of the sub-pixel 400 and the brightness detection module 10.

[0059] The film structure of the photoelectric sensing unit will be described below. Figure 5 A schematic diagram of the film layer structure connection between a photoelectric sensing unit and a sub-pixel provided for an embodiment of this utility model is shown below. Figure 5 The photoelectric sensing unit 11 includes a first electrode 111, a first hole functional layer 112, a photosensitive layer 113, a first electron functional layer 114, and a second electrode 115 stacked together.

[0060] In this design, the first electrode 111 can be the anode, and the second electrode 115 can be the cathode. In practical applications, the voltage value of the second electrode 115 is set to be greater than the voltage value of the first electrode 111, so that a potential difference is formed between the second electrode 115 and the first electrode 111, thereby ensuring the normal operation of the photoelectric sensing unit 11, improving the photoelectric conversion efficiency of the photoelectric sensing unit 11, and accelerating the response speed.

[0061] The first hole functional layer 112 may include a first hole injection layer 1121 and a first hole transport layer 1122, and the first electron functional layer 114 may include a first electron transport layer 1141 and a first electron injection layer 1142. The photosensitive layer 113, as the core functional layer of the photoelectric sensing unit 11, determines the photoelectric conversion efficiency of the photoelectric sensing unit 11.

[0062] Optionally, the sub-pixel 400 includes a third electrode 401, a second hole-functional layer 402, a light-emitting material layer 403, a second electronic functional layer 404, and a fourth electrode 405 stacked together.

[0063] In this design, the third electrode 401 can be the anode, and the fourth electrode 405 can be the cathode. In practical applications, the voltage value of the third electrode 401 can be greater than the voltage value of the fourth electrode 405, creating a potential difference between the third electrode 401 and the fourth electrode 405, which causes the sub-pixel 400 to emit light.

[0064] The second hole functional layer 402 may include a second hole injection layer 4021 and a second hole transport layer 4022, and the second electron functional layer 404 may include a second electron transport layer 4041 and a second electron injection layer 4042.

[0065] See Figure 5Optionally, the second hole functional layer 402 and the first hole functional layer 112 are on the same layer, and / or the second electronic functional layer 404 and the first electronic functional layer 114 are on the same layer. By setting the second hole functional layer 402 and the first hole functional layer 112 to be on the same layer, the photoelectric sensing unit 11 at the first electrode 111 interface and the sub-pixel 400 at the third electrode 401 interface can use the same hole injection / transport system, which can improve process compatibility and eliminate the need to design or deposit different hole functional layers for the photoelectric sensing unit 11 and the sub-pixel 400, thereby reducing process complexity and cost. Similarly, by setting the second electronic functional layer 404 and the first electronic functional layer 114 to be on the same layer, the stack-up design can be simplified and process compatibility can be improved.

[0066] See Figure 5 Optionally, the material of the second hole functional layer 402 is the same as that of the first hole functional layer 112, and / or the material of the second electronic functional layer 404 is the same as that of the first electronic functional layer 114. That is, the photoelectric sensing unit 11 and the sub-pixel 400 can share the hole functional layer and the electronic functional layer, which can simplify the stack-up design, simplify the production process, and reduce the cost of process optimization.

[0067] See Figure 5 Optionally, the first electrode 111 and the third electrode 401 are on the same layer and insulated from each other, and the second electrode 115 and the fourth electrode 405 are on the same layer and insulated from each other, which can avoid interference between the sub-pixel 400 and the photoelectric sensing unit 11. It should be noted that the light-emitting material layer 403 of the sub-pixel is insulated from the photosensitive layer 113 of the photoelectric sensing unit.

[0068] Figure 6 See the schematic diagram of another display module provided in this embodiment of the present invention. Figure 6 Based on the above embodiments, optionally, the display panel 500 includes multiple display areas AA1, and each display area AA1 is provided with at least one brightness detection module 10. Each display area AA1 may include multiple sub-pixels 400 arranged in an array. For example, display area AA1 may include sub-pixels 400 arranged in a 2*2 pattern, or display area AA1 may include sub-pixels 400 arranged in a 1*1 pattern, or display area AA1 may include sub-pixels 400 arranged in a 3*3 pattern; no specific limitation is made here. Figure 5 The example shows a display area AA1 comprising 2*2 arranged sub-pixels 400, and a brightness detection module 10 is provided within the display area AA1 to detect the actual brightness of the display area AA1, which simplifies the circuit design.

[0069] The technical solution of this embodiment can reduce the number of brightness detection modules 10, reduce power consumption and cost, and simplify wiring while ensuring the brightness detection of all sub-pixels 400.

[0070] It is understood that in other embodiments, in addition to setting a brightness detection module 10 in the display area AA1, a brightness detection module 10 can also be set on one side of each sub-pixel 400 to achieve redundancy of the brightness detection module 10 and enhance fault tolerance.

[0071] This embodiment provides a display device, including the display module provided in any of the above embodiments. Therefore, the display device has corresponding beneficial effects.

[0072] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present utility model. See also: Figure 7 The display device also includes a driver module 30.

[0073] The driving module 30 is connected to both the signal conversion module 20 and the sub-pixel 400. The driving module 30 receives the voltage signal transmitted by the signal conversion module 20, calculates the compensation data for the sub-pixel 400 based on the difference between the target voltage corresponding to the preset brightness of the sub-pixel 400 and the voltage signal, and performs brightness compensation on the sub-pixel 400 based on the compensation data. The compensation data can be grayscale compensation data for the sub-pixel or data voltage compensation data for the sub-pixel.

[0074] The driving module 30 may include a driving chip 31, and all signal conversion modules 20 share a driving chip 31. In practical applications, each brightness detection module 10 can be numbered so that each brightness detection module 10 corresponds to a specific sub-pixel 400 or display area. The driving chip 31 calculates compensation data by comparing the measured voltage signal with the target voltage corresponding to the preset brightness, thereby adjusting the gray level of the target sub-pixel to achieve brightness compensation.

[0075] Understandable Figure 7 For ease of explanation, only the connection between the driving module 30 and one signal conversion module 20 and one sub-pixel 400 in the display panel 500 is shown. However, in practice, the driving module 30 is connected to all signal conversion modules 20 and all sub-pixels 400 in the display panel 500.

[0076] See also Figure 7 Optionally, the signal conversion module 20 is integrated into the drive module 30 to improve the integration of the display device.

[0077] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0078] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A display module, characterized by include: Multiple sub-pixels, and an array of the multiple sub-pixels arranged; At least one brightness detection module is provided, along the row direction and / or column direction of the sub-pixel arrangement, the brightness detection module is disposed on one side of the sub-pixel, and the brightness detection module is used to detect the actual brightness sensing signal of at least one of the sub-pixels; At least one signal conversion module is provided, which is electrically connected to the brightness detection module and is used to obtain a voltage signal corresponding to the actual brightness sensing signal based on the actual brightness sensing signal.

2. The display module of claim 1, wherein, The brightness detection module includes a photoelectric sensing unit; The photoelectric sensing unit includes a first electrode, a first hole-functional layer, a photosensitive layer, a first electron-functional layer, and a second electrode stacked together. The sub-pixel includes a third electrode, a second hole-functional layer, a light-emitting material layer, a second electronic functional layer, and a fourth electrode stacked together; Wherein, the second hole functional layer and the first hole functional layer are in the same layer, and / or, the second electron functional layer and the first electron functional layer are in the same layer.

3. The display module of claim 2, wherein, The material of the second hole functional layer is the same as the material of the first hole functional layer, and / or the material of the second electron functional layer is the same as the material of the first electron functional layer.

4. The display module of claim 2, wherein, The first electrode is in the same layer as the third electrode and is insulated from it, and the second electrode is in the same layer as the fourth electrode and is insulated from it.

5. The display module of claim 1, wherein, The display module includes a display panel; The display panel includes multiple display areas, and each display area is provided with at least one brightness detection module.

6. The display module of claim 1 or 5, wherein, A brightness detection module is provided on one side of each of the sub-pixels.

7. The display module of claim 1, wherein, The signal conversion module includes a first signal conversion unit and a second signal conversion unit; The first terminal of the first signal conversion unit is connected to the brightness detection module, and the first signal conversion unit is used to convert the actual brightness sensing signal output by the brightness detection module into an analog voltage signal corresponding to the actual brightness sensing signal; the second terminal of the first signal conversion unit is connected to the second signal conversion unit, and the second signal conversion unit is used to convert the analog voltage signal into a digital voltage signal.

8. The display module of claim 1, wherein, The display module includes a display panel; The display panel includes an array substrate, which is located on one side of the sub-pixels and the brightness detection module; The display panel also includes a display area and a non-display area, with the brightness detection module located in the display area and the signal conversion module located in the non-display area.

9. A display device comprising: Includes the display module as described in any one of claims 1-8; The display device also includes a driver module; The driving module is connected to the signal conversion module and the sub-pixel respectively. The driving module is used to receive the voltage signal transmitted by the signal conversion module, calculate the compensation data of the sub-pixel according to the difference between the target voltage corresponding to the preset brightness of the sub-pixel and the voltage signal, and perform brightness compensation on the sub-pixel according to the compensation data.

10. The display device according to claim 9, wherein The signal conversion module is integrated into the driver module.

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