Driving control method and device of display panel and terminal equipment

Abstract

The invention discloses a driving control method and device of a display panel and terminal equipment, the display panel comprises a plurality of pixel units, each pixel unit comprises at least one sub-pixel group, and each sub-pixel group comprises at least two sub-pixels with the same color. The method comprises the steps that under the condition that it is detected that a sub-pixel with the abnormal brightness exists in a display panel, the target driving voltage of a target sub-pixel is obtained, and the target sub-pixel is a normal sub-pixel with the same color and belongs to the same sub-pixel group with the sub-pixel with the abnormal brightness; and driving the target sub-pixel based on the target driving voltage. For the pixel with abnormal brightness, the normal same-color sub-pixels in the same sub-pixel group can be used for brightness compensation, so that the situation that the display effect is influenced by dark-spot pixels is effectively reduced.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a driving control method, device and terminal equipment for a display panel. Background Technology

[0002] The display industry is developing rapidly, and display applications have been integrated into all aspects of people's lives. Users' demand for high-quality displays is also increasing.

[0003] Current display technologies primarily include Active-matrix Organic Light-Emitting Diode (AMOLED) displays, which emit light through current-driven illumination. However, existing AMOLED displays generally suffer from poor display quality. Summary of the Invention

[0004] This application provides a driving control method, apparatus, and terminal device for a display panel, aiming to improve the display effect of AMOLED display devices.

[0005] In a first aspect, embodiments of this application provide a driving control method for a display panel, the display panel including a plurality of pixel units, each pixel unit including at least one sub-pixel group, the sub-pixel group including at least two sub-pixels having the same color, the method including:

[0006] If a sub-pixel with abnormal brightness is detected in the display panel, the target driving voltage of the target sub-pixel is obtained; wherein, the target sub-pixel is a normal sub-pixel belonging to the same sub-pixel group as the sub-pixel with abnormal brightness.

[0007] The target sub-pixel is driven based on the target driving voltage.

[0008] In one possible implementation of the first aspect described above, sub-pixels located in the same pixel group are all connected to the same pixel driving circuit.

[0009] In one possible implementation of the first aspect above, when an abnormally bright sub-pixel is detected in the display panel, obtaining the target driving voltage of the target sub-pixel includes:

[0010] Determine the anomaly type of the sub-pixel group to which the sub-pixel with the abnormal brightness belongs;

[0011] Based on the anomaly type, determine the target driving voltage of the target sub-pixel;

[0012] The sub-pixel group comprises three or more sub-pixels with the same color.

[0013] In one possible implementation of the first aspect above, determining the anomaly type of the sub-pixel group to which the sub-pixel with the brightness anomaly belongs includes:

[0014] Obtain the coordinates of the sub-pixel with the abnormal brightness;

[0015] The luminescence status of each sub-pixel of the same color in the sub-pixel group to which the sub-pixel with abnormal brightness belongs is determined based on the coordinates of the sub-pixel with abnormal brightness.

[0016] The abnormality type is determined based on the emission status of each sub-pixel of the same color in the pixel unit to which the sub-pixel with abnormal brightness belongs.

[0017] In one possible implementation of the first aspect above, when an abnormally bright sub-pixel is detected in the display panel, obtaining the target driving voltage of the target sub-pixel includes:

[0018] Obtain the display brightness of a reference sub-pixel group; the reference sub-pixel group is a group of sub-pixels of the same color as the sub-pixels with abnormal brightness in the pixel units with normal display brightness in the display panel;

[0019] A brightness compensation coefficient corresponding to the display brightness is determined based on the display brightness of the reference sub-pixel group;

[0020] The target driving voltage of the target sub-pixel is calculated based on the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient.

[0021] In one possible implementation of the first aspect above, before determining the brightness compensation coefficient corresponding to the display brightness based on the display brightness of the reference sub-pixel group, the method further includes:

[0022] The brightness compensation coefficient of the display panel is tested to determine the brightness compensation coefficient corresponding to each brightness range.

[0023] In one possible implementation of the first aspect above, the step of performing a brightness compensation coefficient test on the display panel to determine the brightness compensation coefficient corresponding to each brightness range includes:

[0024] The driving voltage of the test sub-pixel group is obtained when the display brightness corresponds to the upper and lower limits of each brightness range; the test sub-pixel group is a sub-pixel group that includes sub-pixels with abnormal brightness.

[0025] For each brightness range, a brightness compensation coefficient is calculated based on a first driving voltage, a second driving voltage, the display brightness corresponding to the upper limit of the brightness range, and the display brightness corresponding to the lower limit of the brightness range; wherein, the first driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the upper limit of the brightness range, and the second driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the lower limit of the brightness range.

[0026] In one possible implementation of the first aspect above, calculating the target driving voltage of the target sub-pixel based on the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient includes:

[0027] The brightness compensation difference of the target sub-pixel is determined based on the display brightness of the reference sub-pixel group and the display brightness of the sub-pixel group to which the target sub-pixel belongs;

[0028] The compensation voltage is determined based on the brightness compensation difference and the brightness compensation coefficient;

[0029] The target driving voltage of the target sub-pixel is determined based on the driving voltage of the sub-pixel group to which the target sub-pixel belongs and the compensation voltage.

[0030] In one possible implementation of the first aspect above, performing a brightness compensation coefficient test on the display panel to determine the brightness compensation coefficient corresponding to each brightness range includes:

[0031] Determine the brightness compensation coefficient for each sub-pixel group of anomaly type.

[0032] In one possible implementation of the first aspect above, determining the brightness compensation coefficients for each sub-pixel group of anomaly types includes:

[0033] For each type of anomaly, the driving voltage of the test sub-pixel group of the anomaly type is obtained when the display brightness is at the upper and lower limits of each brightness range.

[0034] For each brightness range, a brightness compensation coefficient is calculated based on the third driving voltage and the fourth driving voltage, as well as the display brightness corresponding to the upper limit of the brightness range and the display brightness corresponding to the lower limit of the brightness range; wherein, the third driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the upper limit of the brightness range, and the fourth driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the lower limit of the brightness range.

[0035] In one possible implementation of the first aspect above, if the display panel has multiple sub-pixel groups with the same abnormality type, then the brightness compensation coefficient corresponding to each brightness range of the sub-pixel group with the same abnormality type is determined based on the brightness change value and the corresponding voltage change value of the multiple sub-pixel groups with the same abnormality type in each brightness range; wherein, the test voltage change value is the difference between the third driving voltage and the fourth driving voltage.

[0036] In one possible implementation of the first aspect above, before obtaining the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel, the method further includes:

[0037] Get the display brightness of the display area of ​​the display panel when displaying the preset image;

[0038] Determine whether there are sub-pixels with abnormal brightness in the display panel based on the displayed brightness.

[0039] Secondly, embodiments of this application provide a driving control device for a display panel. The display panel includes a plurality of pixel units, each pixel unit including at least one sub-pixel group, and each sub-pixel group including at least two sub-pixels having the same color. The device includes:

[0040] The determining unit is used to obtain the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel; wherein the target sub-pixel is a normal sub-pixel belonging to the same sub-pixel group as the abnormal brightness sub-pixel;

[0041] A driving unit is used to drive the target sub-pixel based on the target driving voltage.

[0042] Thirdly, embodiments of this application provide a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the drive control method for the display panel as described in the first aspect above.

[0043] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the drive control method for the display panel as described in the first aspect above.

[0044] It is understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0045] The beneficial effects of the embodiments in this application compared with the prior art are:

[0046] In this embodiment, for pixels with abnormal brightness, a target driving voltage for brightness compensation can be determined according to the type of abnormality, and normal sub-pixels of the same color in the same pixel unit can be driven to perform brightness compensation based on the target driving voltage, thereby reducing the impact of dark pixels on the display effect and improving the display effect of the AMOLED display device. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the display area of ​​a display panel according to an embodiment of this application;

[0048] Figure 2 This is a schematic diagram of the pixel driving circuit for a sub-pixel of the same color provided in an embodiment of this application;

[0049] Figure 3 This is a schematic diagram of the structure of a pixel unit of a display panel according to another embodiment of this application;

[0050] Figure 4 This is a schematic diagram illustrating the implementation flow of a display panel driving control method according to an embodiment of this application;

[0051] Figure 5 This is a schematic diagram of the structure of a pixel unit of a display panel according to another embodiment of this application;

[0052] Figure 6 This is a schematic diagram of the structure of a pixel unit of a display panel according to another embodiment of this application;

[0053] Figure 7 This is a schematic diagram of the structure of a display panel provided in another embodiment of this application;

[0054] Figure 8 This is a schematic diagram of the implementation process for determining the brightness compensation coefficients corresponding to each brightness range according to an embodiment of this application;

[0055] Figure 9 This is a schematic diagram illustrating the implementation flow of a display panel driving control method provided in another embodiment of this application;

[0056] Figure 10 This is a structural block diagram of a drive control device for a display panel according to an embodiment of this application;

[0057] Figure 11 This is a structural block diagram of a terminal device provided in one embodiment of this application; Detailed Implementation

[0058] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0059] With the rapid development of display devices, the functions of various display devices are becoming increasingly rich and their performance is becoming increasingly powerful. Based on active matrix organic light-emitting diode (AMOLED) pixels, which have unique characteristics such as pixel self-illumination, thinness, wide viewing angle, fast response speed, and low power consumption, they are widely used.

[0060] In actual use, display products are prone to dark spots. The inventors discovered that because the photolithography etching technology is used in the vapor deposition part, and the front pixels may damage the rear pixels and vice versa during the manufacturing process of the display products, the display products are prone to dark spots. The presence of dark spots will have a certain impact on the display effect.

[0061] Based on this, this application provides a driving control method for a display panel, which can use normal sub-pixels of the same color within the same sub-pixel group to perform brightness compensation for pixels with abnormal brightness, effectively reducing the impact of dark pixels on the display effect.

[0062] The following is a detailed description of a display panel driving control method provided in the embodiments of this application, with reference to the accompanying drawings.

[0063] like Figure 1 As shown, Figure 1 This illustration shows a structural diagram of the display area of ​​a display panel according to an embodiment of this application, as shown below. Figure 1 As shown, the display panel 10 in this embodiment includes a plurality of pixel units 11, each pixel unit 11 including at least one sub-pixel group, and each sub-pixel group including at least two sub-pixels with the same color. For example Figure 1 Pixel unit 11 includes a group of red sub-pixels R1, which includes a first red sub-pixel R1a and a second red sub-pixel R1b. The first red sub-pixel R1a and the second red sub-pixel R1b can be... Figure 2 The driving circuit shown is used for driving. Figure 2 As shown, the first red sub-pixel R1a and the second red sub-pixel R1b are driven by the same pixel driving circuit. That is, sub-pixels located in the same pixel group are all connected to the same pixel driving circuit, and the display brightness of the sub-pixels can be controlled by adjusting the magnitude of the driving voltage.

[0064] like Figure 2 As shown, the pixel driving circuit described above may include a first TFT transistor T1, a second TFT transistor T2, a third TFT transistor T3, a fourth TFT transistor T4, a fifth TFT transistor T5, a sixth TFT transistor T6, a seventh TFT transistor T7, an eighth TFT transistor T8, a storage capacitor Cst, a first sub-pixel R1a, and a second sub-pixel R1b. The sixth TFT transistor T6 may be a driving transistor, while the other TFT transistors may be switching transistors. Figure 2 In the circuit, the control electrode of the second TFT transistor T2 is connected to SP1, and the first electrode of the second TFT transistor T2 is connected to the data terminal Data. The first electrode of the first TFT transistor T1 is connected to the second electrode of the second TFT transistor T2. The control electrode of the first TFT transistor T1 is connected to the first electrode of the third TFT transistor T3. The second electrode of the first TFT transistor T1 is connected to the first electrode of the fourth TFT transistor T4. The control electrode of the third TFT transistor T3 is connected to the scan terminal SN2. The second electrode of the third TFT transistor T3 is connected to the first electrode of the fourth TFT transistor T4. The second electrode of the fourth TFT transistor T4 is connected to the reference voltage vref. The first terminal of the storage capacitor Cst is connected to the control electrode of the first TFT transistor T1, and the second terminal of the storage capacitor Cst is connected to ELVDD. The first electrode of the fifth TFT transistor T5 is connected to ELVDD, and the control electrode of the fifth TFT transistor T5 is connected to EM. The second electrode of TFT transistor T5 is connected to the first electrode of the first TFT transistor T1. The first electrode of the sixth TFT transistor T6 is connected to the second electrode of the first TFT transistor T1. The control electrode of the sixth TFT transistor T6 is connected to EM. The second electrode of the sixth TFT transistor T6 is connected to the positive electrode of the first sub-pixel R1a. The negative electrode of the first sub-pixel R1a is connected to ELVSS. The positive electrode of the second sub-pixel R1b is connected to the second electrode of the sixth TFT transistor T6. The negative electrode of the second sub-pixel R1b is connected to ELVSS. The control electrode of the seventh TFT transistor T7 is connected to the control electrode of the eighth TFT transistor T8. The first electrode of the seventh TFT transistor T7 is connected to the positive electrode of the first sub-pixel R1a. The second electrode of the seventh TFT transistor T7 is connected to vrefp2. The first electrode of the eighth TFT transistor T8 is connected to the first electrode of the sixth TFT transistor T6. The second electrode of the eighth TFT transistor T8 is connected to vrefp1.

[0065] Understandable Figure 1 This is merely an example of a structural schematic diagram of a display panel 10. The display panel to which this application embodiment applies may also include other sub-pixel groups of the same color, for example... Figure 3As shown, a pixel unit 11 may include three sub-pixel groups: a red sub-pixel group R1, a green sub-pixel group G1, and a blue sub-pixel group B1. The red sub-pixel group R1 may include a first red sub-pixel R1a and a second red sub-pixel R1b; the green sub-pixel group G1 may include a first green sub-pixel G1a and a second green sub-pixel G1b; and the blue sub-pixel group may include a first blue sub-pixel B1a and a second blue sub-pixel B1b. Of course, the sub-pixel groups in each pixel unit 11 can be designed according to actual product requirements, and the number of sub-pixels included in each sub-pixel group can also be designed according to actual product requirements. For example, each sub-pixel group may include three or four sub-pixels of the same color.

[0066] The drive control method provided in this application embodiment is applicable to conditions such as Figure 1 or Figure 3 The following describes the driving control method provided in the embodiments of this application for the display panel with the pixel structure shown:

[0067] Please see Figure 4 , Figure 4 The following illustrates the implementation flow of a display panel driving control method according to an embodiment of this application. Please refer to [link / reference]. Figure 4 The aforementioned drive control method may specifically include the following steps:

[0068] S101, if an abnormally bright sub-pixel is detected in the display panel, the target driving voltage of the target sub-pixel is obtained.

[0069] In this embodiment, the target sub-pixel refers to a sub-pixel with abnormal brightness that is a normal sub-pixel belonging to the same sub-pixel group. For example, such as... Figure 5 In the example of the red subpixel group, the target subpixel is explained as follows: if the subpixel with abnormal brightness is R1a, then R1b is the target subpixel; if the subpixel with abnormal brightness is R1b, then R1a is the target subpixel. For example... Figure 6 In the example of the red sub-pixel group, the target sub-pixel is explained as follows: if the sub-pixels with abnormal brightness are R1a and R1c, then R1b is the target sub-pixel; if R2b is the sub-pixel with abnormal brightness, then R2a and R2c can be identified as the target sub-pixels.

[0070] In the embodiments of this application, a sub-pixel with abnormal brightness can be a sub-pixel that does not emit light (i.e., a dark sub-pixel) or a sub-pixel with relatively low light emission (e.g., below a preset brightness threshold).

[0071] The preset brightness threshold can be set according to actual application requirements, and this application does not impose specific restrictions on it.

[0072] Since all subpixels in the same subpixel group are connected to the same pixel driving circuit, when there are subpixels with abnormal brightness in a subpixel group, brightness compensation can be performed by normal subpixels (i.e. target subpixels) belonging to the same subpixel group. This can effectively compensate for the impact of dark subpixels on the display effect and improve the display effect of AMOLED display devices.

[0073] S102, drives the target sub-pixel based on the target driving voltage.

[0074] In this embodiment, the target driving voltage can be determined based on the display brightness of the reference sub-pixel group and the brightness compensation coefficient corresponding to that display brightness. The reference sub-pixel group is the group of sub-pixels of the same color as the sub-pixels with abnormal brightness in the pixel units of the display panel with normal display brightness.

[0075] It is understandable that the purpose of the target driving voltage is to enable the sub-pixel group to which the target sub-pixel belongs to to display the same display brightness as the reference sub-pixel group. That is, by using the target sub-pixel for light emission compensation, after driving the target sub-pixel based on the target driving voltage, it is possible for the sub-pixel group to which the target sub-pixel belongs to to display the same display brightness as the reference sub-pixel.

[0076] Once the target driving voltage is determined, effective brightness compensation can be achieved by adjusting the driving voltage of the target sub-pixel to that target driving voltage.

[0077] In one embodiment of this application, a brightness compensation coefficient corresponding to the display brightness can be determined based on the display brightness of the reference sub-pixel group.

[0078] The reference subpixel group is a group of subpixels in the display panel that share the same color as the subpixels with abnormal brightness, within the pixel units displaying normal brightness. For example, such as... Figure 7 As shown, taking the red sub-pixel group as an example, the pixel unit composed of the four sub-pixels R49.a, R49.b, G50, and B51 can be selected as the reference pixel unit, and R49.a and R49.b can be selected as the reference sub-pixel group; or R22.a and R22.b in the pixel unit composed of the four sub-pixels R22.a, R22.b, G23, and B24 can be selected as a reference sub-pixel group, R49.a and R49.b in the pixel unit composed of the four sub-pixels R49.a, R49.b, G50, and B51 can be selected as a reference sub-pixel group, and R61.a and R61.b in the pixel unit composed of the four sub-pixels R61.a, R61.b, G62, and B63 can be selected as a reference sub-pixel group.

[0079] In practical applications, the brightness compensation coefficient of the display panel can be tested in advance to determine the brightness compensation coefficient corresponding to each brightness range.

[0080] It is understandable that when performing a brightness compensation coefficient test, the display brightness of the display panel can be divided into multiple brightness ranges, and then the brightness compensation coefficient corresponding to each brightness range can be determined. The brightness compensation coefficient corresponding to each brightness range can then be pre-stored in the drive control device of the display panel. When the drive control method provided in the embodiments of this application is executed, the drive control device can read the brightness compensation coefficient corresponding to the display brightness according to the display brightness of the reference sub-pixel group.

[0081] In practical applications, the number and position of the aforementioned reference sub-pixel groups can be selected according to actual application requirements. For example, a group of sub-pixels of the same color that emits normal light in the central area of ​​the display panel can be selected as the reference sub-pixel group. Here, a group of sub-pixels of the same color that emits normal light means that each sub-pixel in the sub-pixel group can emit normal light.

[0082] For example, such as Figure 7 As shown, you can choose only the reference sub-pixel group R49.a and R49.b; or you can choose the reference sub-pixel group R22.a and R22.b, the reference sub-pixel group R49.a and R49.b, and the reference sub-pixel group R61.a and R61.b, for a total of three reference sub-pixel groups.

[0083] In practical implementation, the display panel may include multiple sub-pixels with abnormal brightness. These sub-pixels may be distributed across multiple sub-pixel groups or multiple pixel units. When multiple sub-pixels with abnormal brightness are distributed across multiple pixel units, either a single test sub-pixel group can be selected to determine the brightness compensation coefficient for each brightness range, or multiple test sub-pixel groups can be selected to determine the brightness coefficient for each brightness range. The following explanation uses the example of selecting a single test sub-pixel group to illustrate how to determine the brightness compensation coefficient for each brightness range. Please refer to [link to relevant documentation]. Figure 8 The determination of the brightness compensation coefficients corresponding to each brightness range may include the following steps:

[0084] S801: Obtain the driving voltage of the test sub-pixel group when working with the display brightness corresponding to the upper and lower limits of each brightness range.

[0085] Here, the aforementioned test subpixel group refers to a subpixel group that includes subpixels with abnormal brightness.

[0086] Here, the display brightness of the test sub-pixel can be determined by taking a picture of the AA area of ​​the display panel using a charge coupled device (CCD) camera. The driving voltage of the pixel driving circuit of the test sub-pixel group can be adjusted so that the display brightness of the test sub-pixel is the display brightness corresponding to the upper and lower limits of each brightness range. The driving voltage of the test sub-pixel group when working is obtained by acquiring the display brightness corresponding to the upper and lower limits of each brightness range.

[0087] S802: For each brightness range, calculate the brightness compensation coefficient of that brightness range based on the first driving voltage and the second driving voltage, as well as the display brightness corresponding to the upper limit of the brightness range and the display brightness corresponding to the lower limit of the brightness range.

[0088] Here, the first driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the upper limit of the brightness range, and the second driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the lower limit of the brightness range. Figure 5 Taking R1a and R1b as examples, the brightness compensation coefficient for each brightness range can be determined by the following formula (1):

[0089] β=((L1a`+L1b`)-(L1a+L1b)) / (V1-V2) (1);

[0090] Where β represents the brightness compensation coefficient of the brightness range, L1a` is the display brightness corresponding to the upper limit of R1a in the brightness range, L1b` is the display brightness corresponding to the upper limit of R1b in the brightness range, L1a is the display brightness corresponding to the lower limit of R1a in the brightness range, L1b is the display brightness corresponding to the lower limit of R1b in the brightness range, V2 is the first driving voltage, and V1 is the second driving voltage.

[0091] It is understood that in this application embodiment, a subpixel group to which a subpixel with abnormal brightness belongs can be used as the test subpixel group, or multiple subpixel groups including subpixels with abnormal brightness can be selected as the test subpixel groups. When multiple subpixel groups including subpixels with abnormal brightness are selected as the test subpixel groups, the brightness compensation coefficient corresponding to each brightness interval can be determined by combining the brightness compensation coefficients corresponding to each brightness interval obtained from testing each test subpixel group. For example, assuming that three subpixel groups including subpixels with abnormal brightness are selected as the test subpixel groups, and assuming that the display brightness is divided into 6 brightness intervals, the brightness compensation coefficients corresponding to the 6 brightness intervals of the first test subpixel group, the brightness compensation coefficients corresponding to the 6 brightness intervals of the second test subpixel group, and the brightness compensation coefficients corresponding to the 6 brightness intervals of the third test subpixel group can be determined according to steps S801 to S802. Then, based on the brightness compensation coefficients corresponding to the first brightness interval of the first test sub-pixel group, the first brightness interval of the second test sub-pixel group, and the first brightness interval of the third test sub-pixel group, the brightness compensation coefficient corresponding to the first brightness interval is determined. Similarly, based on the brightness compensation coefficients corresponding to the sixth brightness interval of the first test sub-pixel group, the sixth brightness interval of the second test sub-pixel group, and the sixth brightness interval of the third test sub-pixel group, the brightness compensation coefficient corresponding to the sixth brightness interval is determined.

[0092] It should be noted that the brightness compensation coefficient for each brightness range is determined by combining the brightness compensation coefficients obtained from testing each sub-pixel group. This can be achieved by taking the average of the brightness compensation coefficients for each brightness range across multiple sub-pixel groups, or by taking a weighted average of the brightness compensation coefficients for each brightness range across multiple sub-pixel groups and using this weighted average as the brightness compensation coefficient for that range. The weighting coefficient can be determined based on the position of the sub-pixel groups; for example, the weighting coefficient for sub-pixel groups located at the center of the display panel can be set higher than that for sub-pixel groups located at the edges of the display panel.

[0093] It is understood that the above is only an exemplary description of the driving control method provided in the embodiments of this application, taking the red sub-pixel group as an example. In actual application, driving control can also be performed on one or more of other sub-pixel groups such as the blue sub-pixel group and the green sub-pixel group to achieve brightness compensation. This application will not elaborate further here.

[0094] After obtaining the brightness compensation coefficient corresponding to each brightness range, the correspondence between the brightness range and the brightness compensation coefficient can be preset in the display panel. After determining that there are sub-pixels with abnormal brightness in the display panel, the brightness compensation coefficient can be read further based on the display brightness of the reference sub-pixel group.

[0095] In one embodiment of this application, the above-mentioned S101 may specifically include:

[0096] S1011: Obtain the display brightness of the reference subpixel group.

[0097] S1012: Determine the brightness compensation coefficient corresponding to the display brightness based on the display brightness of the reference sub-pixel group.

[0098] S1013: Calculate the target driving voltage of the target sub-pixel based on the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient.

[0099] In practical applications, once the display brightness of the reference sub-pixel group is determined, it can be determined which brightness range the display brightness of the reference sub-pixel group belongs to. Once the brightness range to which the display brightness of the reference sub-pixel group belongs is determined, the corresponding brightness compensation coefficient can be determined.

[0100] Specifically, S1013 may include: determining the brightness compensation difference of the target sub-pixel based on the display brightness of the reference sub-pixel group and the display brightness of the sub-pixel group to which the target sub-pixel belongs; determining the compensation voltage based on the brightness compensation difference and the brightness compensation coefficient; and determining the target driving voltage of the target sub-pixel based on the driving voltage of the sub-pixel group to which the target sub-pixel belongs and the compensation voltage.

[0101] Taking a red sub-pixel group consisting of two red sub-pixels as an example, the target driving voltage of the target sub-pixel of the above-mentioned abnormal type can be calculated by the following formula (2):

[0102] V=VL+((LR1+LR2)-(L1a 、、 +L1b 、、 )) / β (2);

[0103] Where V represents the target driving voltage, LR1 represents the display brightness of the first red sub-pixel in the reference sub-pixel, LR2 represents the display brightness of the second red sub-pixel in the reference sub-pixel, and L1a 、、 L1b represents the display brightness of the target subpixel under driving voltage. 、、 VL represents the display brightness of the sub-pixel with abnormal brightness under the driving voltage, VL represents the driving voltage of the target sub-pixel, and β represents the brightness compensation coefficient.

[0104] In some embodiments, multiple reference sub-pixel groups can be selected as references, and the average brightness of the sub-pixels corresponding to the positions in each sub-pixel group can be used as the display brightness of each sub-pixel in the aforementioned reference sub-pixels. For example, Figure 7 The display panel shown allows selection of three reference sub-pixel groups: R22.a, R22.b, R49.a, R49.b, and R61.a, R61.b. When determining the display brightness LR1 of the first red sub-pixel in each reference sub-pixel group, calculations can be performed based on the brightness L22.a of R22.a, L49.a of R49.a, and L61.a of R61.a. For example, the average or weighted average of the brightness L22.a, L49.a, and L61.a of R61.a can be calculated. The average or weighted average value is used as the display brightness LR1 of the first red sub-pixel in the reference sub-pixel group. When determining the display brightness LR2 of the second red sub-pixel in the reference sub-pixel group, it can be calculated based on the brightness L22.b of R22.b, the brightness L49.b of R49.b, and the brightness L61.b of R61.b. For example, the average or weighted average value of the brightness L22.b of R22.b, the brightness L49.b of R49.b, and the brightness L61.b of R61.b can be calculated, and this average or weighted average value is used as the display brightness LR2 of the second red sub-pixel in the reference sub-pixel group.

[0105] In some embodiments of this application, the aforementioned sub-pixel group includes three or more sub-pixels with the same color, and S101 may specifically include the following steps:

[0106] Determine the anomaly type of the sub-pixel group to which the sub-pixel with abnormal brightness belongs;

[0107] Determine the target driving voltage of the target sub-pixel based on the anomaly type.

[0108] In practical applications, the anomaly type of the subpixel group to which the subpixel with abnormal brightness belongs can be determined based on the structure of the display panel. When performing brightness compensation, the driving voltage of the target subpixel is different for subpixel groups with different anomaly types.

[0109] For example, for a display panel with a subpixel group comprising three subpixels of the same color, the illumination conditions of these three subpixels include: all three subpixels can illuminate normally, one subpixel cannot illuminate normally, two subpixels cannot illuminate normally, and all three subpixels cannot illuminate normally. Therefore, for the case where one subpixel cannot illuminate normally, the anomaly type can be set to C. That is, for a subpixel group comprising three subpixels of the same color, if one subpixel cannot illuminate normally, the anomaly type of that subpixel with abnormal brightness can be determined as C. For the case where two subpixels cannot illuminate normally, the anomaly type can be set to D. That is, if two subpixels cannot illuminate normally, the anomaly type of these two subpixels with abnormal brightness can be determined as D.

[0110] Of course, the anomaly types can be further subdivided. For example, regarding the case of a single subpixel with abnormal brightness, if the first subpixel cannot emit light normally, but the second and third subpixels can, the anomaly type can be set to E; if the first and third subpixels can emit light normally, but the second subpixel cannot, the anomaly type can be set to F; and if the first and second subpixels can emit light normally, but the third subpixel cannot, the anomaly type can be set to G. Similarly, regarding the case of two subpixels with abnormal brightness, if the first and second subpixels cannot emit light normally, but the third subpixel can, the anomaly type can be set to H; if the first and third subpixels cannot emit light normally, but the second subpixel can, the anomaly type can be set to I; and if the first subpixel can emit light normally, but the second and third subpixels cannot, the anomaly type can be set to J, and so on.

[0111] For example, please refer to [the document / reference]. Figure 6 ,like Figure 6 As shown, R1a and R1c are sub-pixels with abnormal brightness, and R1b is a normal pixel. The abnormality type for R1a and R1c is I; the abnormality type for R2b is F; the abnormality type for R3a is E; the abnormality type for R4c is G; the abnormality type for R5a and R5b is H; and the abnormality type for R6b and R6c is J.

[0112] It is understood that the above is only an example of anomaly types and not a limitation. The anomaly types can be set according to the actual application requirements. The possible anomaly types for a sub-pixel group including more sub-pixels can be deduced in the same way, and will not be repeated here.

[0113] In practical applications, when a sub-pixel with abnormal brightness is detected in the display panel, the coordinates of the sub-pixel with abnormal brightness can be obtained, and then the light emission status of each sub-pixel of the same color in the sub-pixel group to which the sub-pixel with abnormal brightness belongs can be determined. Then, the abnormality type can be determined based on the light emission status of each sub-pixel of the same color in the pixel unit to which the sub-pixel with abnormal brightness belongs.

[0114] In practical applications, different abnormality types correspond to different target driving voltages. The correspondence between abnormality types and corresponding target driving voltages can be preset. Once the abnormality type is determined, the target driving voltage of the target sub-pixel can be determined.

[0115] In one embodiment of this application, the target driving voltage of each abnormal type of target sub-pixel can be determined based on the display brightness of the reference sub-pixel group.

[0116] In practical applications, the number and position of the aforementioned reference pixel units can be selected according to the actual application process. For example, a group of sub-pixels of the same color as the sub-pixels with abnormal brightness can be selected from the normally emitting pixel units in the central area of ​​the display panel as reference pixel units. Here, "normal emitting light" means that each sub-pixel in the sub-pixel group can emit light normally.

[0117] Understandably, when a display panel has multiple sub-pixel groups with different abnormal types, the brightness compensation coefficient test can be performed on each sub-pixel group with different abnormal types to determine the brightness compensation coefficient for each sub-pixel group with different abnormal types.

[0118] For each type of anomaly, the driving voltage of the test sub-pixel group for that anomaly type can be obtained when working at the upper and lower limits of the display brightness in each brightness range. For each brightness range, the brightness compensation coefficient for that brightness range of that anomaly type can be calculated based on the third and fourth driving voltages, the display brightness corresponding to the upper limit of the brightness range, and the display brightness corresponding to the lower limit of the brightness range.

[0119] The third driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the upper limit of the brightness range, and the fourth driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the lower limit of the brightness range.

[0120] The process for determining the luminance compensation coefficient for each luminance range can be found in the descriptions in S801-S802, and will not be repeated here.

[0121] In some embodiments, if the display panel has multiple sub-pixel groups with the same abnormality type, the brightness compensation coefficient corresponding to each brightness range of the sub-pixel group with the abnormality type can be determined based on the brightness change value and the corresponding voltage change value of the multiple sub-pixel groups with the same abnormality type in each brightness range; wherein, the test voltage change value is the difference between the third driving voltage and the fourth driving voltage.

[0122] As can be seen from the above, in the embodiments of this application, for pixels with abnormal brightness, the target driving voltage for brightness compensation can be determined according to the type of abnormality, and the normal sub-pixels of the same color in the same pixel unit can be driven to perform brightness compensation based on the target driving voltage, thereby reducing the impact of dark pixels on the display effect.

[0123] In some embodiments, such as Figure 9 As shown, the display panel driving method provided in this application embodiment may further include the following steps before S101:

[0124] S901: Obtain the display brightness of the display area when the display panel is displaying a preset image.

[0125] In this embodiment of the application, by displaying a preset image on the display panel and then obtaining the display brightness of the display area when the preset image is displayed, it is possible to detect which pixels on the display panel have abnormal brightness.

[0126] In practical applications, a preset image can be set to be displayed on the screen, and then the display brightness of the display area when the preset image is displayed can be obtained by taking a picture with a CCD camera.

[0127] The preset screen can be set according to actual application needs, and this application does not impose specific restrictions on it.

[0128] S902: Determine whether there are sub-pixels with abnormal brightness in the display panel based on the display brightness.

[0129] If there are sub-pixels with abnormal brightness, the brightness values ​​captured by the CCD camera will be lower than the preset brightness threshold.

[0130] It should be noted that the above preset brightness threshold can be set according to the display brightness of the preset screen.

[0131] As can be seen from the above, by detecting the display brightness of the display panel, the location of sub-pixels with abnormal brightness in the display panel can be detected, providing a basis for subsequent brightness compensation using sub-pixels of the same color.

[0132] See Figure 10 , Figure 10 The diagram illustrates a drive control device for a display panel according to an embodiment of this application. The display panel includes multiple pixel units, each pixel unit including at least one sub-pixel group, and each sub-pixel group including at least two sub-pixels with the same color. Specifically, the device may include the following modules:

[0133] The determining unit 1001 is used to obtain the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel; wherein the target sub-pixel is a normal sub-pixel belonging to the same sub-pixel group as the abnormal brightness sub-pixel.

[0134] The driving unit 1002 is used to drive the target sub-pixel based on the target driving voltage.

[0135] In one implementation, sub-pixels located in the same pixel group are all connected to the same pixel driving circuit.

[0136] In one implementation, the sub-pixel group includes three or more sub-pixels with the same color. The determination unit 1001 may include a type determination unit, which is used to determine the abnormality type of the sub-pixel group to which the sub-pixel with abnormal brightness belongs; and to determine the target driving voltage of the target sub-pixel based on the abnormality type.

[0137] In one implementation, the type determination unit is specifically used to obtain the coordinates of the sub-pixel with abnormal brightness; determine the illumination status of each sub-pixel of the same color in the sub-pixel group to which the sub-pixel with abnormal brightness belongs based on the coordinates of the sub-pixel with abnormal brightness; and determine the abnormality type based on the illumination status of each sub-pixel of the same color in the pixel unit to which the sub-pixel with abnormal brightness belongs.

[0138] In one implementation, the determining unit 1001 is specifically used to obtain the display brightness of a reference sub-pixel group; the reference sub-pixel group is a sub-pixel group of the same color as the sub-pixel with abnormal brightness in the pixel unit with normal display brightness in the display panel; a brightness compensation coefficient corresponding to the display brightness is determined according to the display brightness of the reference sub-pixel group; and a target driving voltage of the target sub-pixel is calculated according to the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient.

[0139] In one implementation, the drive control device further includes a test unit, which is used to: perform a brightness compensation coefficient test on the display panel and determine the brightness compensation coefficient corresponding to each brightness range.

[0140] In one implementation, the test unit is specifically used to obtain the driving voltage of the test sub-pixel group when working with the display brightness corresponding to the upper and lower limits of each brightness range; the test sub-pixel group is a sub-pixel group that includes sub-pixels with abnormal brightness.

[0141] For each brightness range, a brightness compensation coefficient is calculated based on a first driving voltage, a second driving voltage, the display brightness corresponding to the upper limit of the brightness range, and the display brightness corresponding to the lower limit of the brightness range; wherein, the first driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the upper limit of the brightness range, and the second driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the lower limit of the brightness range.

[0142] In one implementation, the determining unit 1001 is specifically configured to: determine the brightness compensation difference of the target sub-pixel based on the display brightness of the reference sub-pixel group and the display brightness of the sub-pixel group to which the target sub-pixel belongs; determine the compensation voltage based on the brightness compensation difference and the brightness compensation coefficient; and determine the target driving voltage of the target sub-pixel based on the driving voltage of the sub-pixel group to which the target sub-pixel belongs and the compensation voltage.

[0143] In one implementation, when multiple anomaly types exist, the aforementioned test unit is also used to determine the brightness compensation coefficient of each anomaly type's sub-pixel group.

[0144] In one implementation, the brightness compensation coefficients for each sub-pixel group of anomaly types are determined, including:

[0145] For each type of anomaly, the driving voltage of the test sub-pixel group of the anomaly type is obtained when the display brightness is at the upper and lower limits of each brightness range.

[0146] For each brightness range, a brightness compensation coefficient is calculated based on the third driving voltage and the fourth driving voltage, as well as the display brightness corresponding to the upper limit of the brightness range and the display brightness corresponding to the lower limit of the brightness range; wherein, the third driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the upper limit of the brightness range, and the fourth driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the lower limit of the brightness range.

[0147] In one implementation, if the display panel has multiple sub-pixel groups with the same abnormality type, then the brightness compensation coefficient corresponding to each brightness range of the sub-pixel group with the same abnormality type is determined based on the brightness change value and the corresponding voltage change value of the multiple sub-pixel groups with the same abnormality type in each brightness range; wherein, the test voltage change value is the difference between the third driving voltage and the fourth driving voltage.

[0148] In one implementation, the drive control device further includes a detection unit, which is used to acquire the display brightness of the display area of ​​the display panel when displaying a preset image; and determine whether there are sub-pixels with abnormal brightness on the display panel based on the display brightness.

[0149] It should be noted that the information interaction and execution process between the above devices are based on the same concept as the method embodiments of this application. For their specific functions and technical effects, please refer to the method embodiments section. The display panel driving control device provided in the embodiments of this application can also determine the target driving voltage for brightness compensation based on the type of abnormality for pixels with abnormal brightness, and drive the normal sub-pixels of the same color in the same pixel unit to perform brightness compensation based on the target driving voltage, thereby reducing the impact of dark pixels on the display effect.

[0150] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0151] See Figure 11 , Figure 11 This application provides a structural block diagram of a terminal device according to an embodiment of the present application. Figure 11As shown, this embodiment provides a terminal device 110, which includes: at least one processor 1101, a memory 1102, and a computer program 1103 stored in the memory 1102 and executable on at least one processor 1101. When the processor 1101 executes the computer program 1103, it implements the steps in any of the above method embodiments.

[0152] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps in any of the above method embodiments.

[0153] This application provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the various method embodiments.

[0154] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying the computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium.

[0155] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A driving control method for a display panel, characterized in that, The display panel includes a plurality of pixel units, each pixel unit including at least one sub-pixel group, the sub-pixel group including at least two sub-pixels having the same color, and the method includes: If a sub-pixel with abnormal brightness is detected in the display panel, the target driving voltage of the target sub-pixel is obtained; wherein, the target sub-pixel is a normal sub-pixel belonging to the same sub-pixel group as the sub-pixel with abnormal brightness. The target sub-pixel is driven based on the target driving voltage.

2. The driving control method for the display panel as described in claim 1, characterized in that, Subpixels located in the same pixel group are all connected to the same pixel driving circuit.

3. The driving control method for a display panel as described in claim 1 or 2, characterized in that, The step of obtaining the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel includes: Determine the anomaly type of the sub-pixel group to which the sub-pixel with the abnormal brightness belongs; Based on the anomaly type, determine the target driving voltage of the target sub-pixel; The sub-pixel group comprises three or more sub-pixels with the same color.

4. The driving control method for the display panel as described in claim 3, characterized in that, The determination of the anomaly type of the sub-pixel group to which the sub-pixel with the brightness anomaly belongs includes: Obtain the coordinates of the sub-pixel with the abnormal brightness; The luminescence status of each sub-pixel of the same color in the sub-pixel group to which the sub-pixel with abnormal brightness belongs is determined based on the coordinates of the sub-pixel with abnormal brightness. The abnormality type is determined based on the emission status of each sub-pixel of the same color in the pixel unit to which the sub-pixel with abnormal brightness belongs.

5. The driving control method for a display panel as described in any one of claims 1 to 4, characterized in that, The step of obtaining the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel includes: Obtain the display brightness of a reference sub-pixel group; the reference sub-pixel group is a group of sub-pixels of the same color as the sub-pixels with abnormal brightness in the pixel units with normal display brightness in the display panel; A brightness compensation coefficient corresponding to the display brightness is determined based on the display brightness of the reference sub-pixel group; The target driving voltage of the target sub-pixel is calculated based on the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient.

6. The driving control method for a display panel as described in claim 5, characterized in that, Before determining the brightness compensation coefficient corresponding to the display brightness based on the display brightness of the reference sub-pixel group, the method further includes: The brightness compensation coefficient of the display panel is tested to determine the brightness compensation coefficient corresponding to each brightness range.

7. The driving control method for a display panel as described in claim 6, characterized in that, The step of performing a brightness compensation coefficient test on the display panel to determine the brightness compensation coefficient corresponding to each brightness range includes: The driving voltage of the test sub-pixel group is obtained when the display brightness corresponds to the upper and lower limits of each brightness range; the test sub-pixel group is a sub-pixel group that includes sub-pixels with abnormal brightness. For each brightness range, a brightness compensation coefficient is calculated based on a first driving voltage, a second driving voltage, the display brightness corresponding to the upper limit of the brightness range, and the display brightness corresponding to the lower limit of the brightness range; wherein, the first driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the upper limit of the brightness range, and the second driving voltage is the driving voltage when the display brightness of the test sub-pixel group is the display brightness corresponding to the lower limit of the brightness range.

8. The driving control method for a display panel as described in claim 5, characterized in that, The step of calculating the target driving voltage of the target sub-pixel based on the display brightness of the reference sub-pixel group, the display brightness of the sub-pixel group to which the target sub-pixel belongs, and the brightness compensation coefficient includes: The brightness compensation difference of the target sub-pixel is determined based on the display brightness of the reference sub-pixel group and the display brightness of the sub-pixel group to which the target sub-pixel belongs; The compensation voltage is determined based on the brightness compensation difference and the brightness compensation coefficient; The target driving voltage of the target sub-pixel is determined based on the driving voltage of the sub-pixel group to which the target sub-pixel belongs and the compensation voltage.

9. The driving control method for a display panel as described in claim 6, characterized in that, The step of performing a brightness compensation coefficient test on the display panel to determine the brightness compensation coefficient corresponding to each brightness range includes: Determine the brightness compensation coefficient for each sub-pixel group of anomaly type.

10. The driving control method for a display panel as described in claim 9, characterized in that, The determination of the brightness compensation coefficients for each sub-pixel group of anomaly types includes: For each type of anomaly, the driving voltage of the test sub-pixel group of the anomaly type is obtained when the display brightness is at the upper and lower limits of each brightness range. For each brightness range, a brightness compensation coefficient is calculated based on the third driving voltage and the fourth driving voltage, as well as the display brightness corresponding to the upper limit of the brightness range and the display brightness corresponding to the lower limit of the brightness range; wherein, the third driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the upper limit of the brightness range, and the fourth driving voltage is the driving voltage when the display brightness of the test sub-pixel group of the abnormal type is the display brightness corresponding to the lower limit of the brightness range.

11. The driving control method for a display panel as described in claim 10, characterized in that, If the display panel has multiple sub-pixel groups with the same abnormality type, then the brightness compensation coefficient corresponding to each brightness range of the sub-pixel group with the same abnormality type is determined according to the brightness change value and the corresponding voltage change value of the multiple sub-pixel groups with the same abnormality type in each brightness range; wherein, the test voltage change value is the difference between the third driving voltage and the fourth driving voltage.

12. The driving control method for a display panel as described in any one of claims 1 to 11, characterized in that, Before obtaining the target driving voltage of the target sub-pixel when an abnormal brightness is detected in the display panel, the method further includes: Get the display brightness of the display area of ​​the display panel when displaying the preset image; The presence of sub-pixels with abnormal brightness in the display panel is determined based on the displayed brightness.

13. A driving control device for a display panel, characterized in that, The display panel includes a plurality of pixel units, each pixel unit including at least one sub-pixel group, the sub-pixel group including at least two sub-pixels having the same color, and the device includes: The determining unit is used to obtain the target driving voltage of the target sub-pixel when an abnormal brightness sub-pixel is detected in the display panel; wherein the target sub-pixel is a normal sub-pixel belonging to the same sub-pixel group as the abnormal brightness sub-pixel; A driving unit is used to drive the target sub-pixel based on the target driving voltage.

14. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 12.

15. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 12.

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