Light panel and method of controlling the same, display panel

Abstract

The application provides a lamp panel and a control method thereof and a display panel, comprising at least one light source group, at least one driving group and at least one first switch element group, the light source group comprises at least two light sources, wherein the first switch element group in the application comprises at least two first switch elements, the input end of the first switch element, the output end of the first switch element and the corresponding light source are connected in series between the first power line and the driving group, the control end of the first switch element is electrically connected to the controller, and the luminance of the at least two light sources in the same light source group can be controlled separately between the adjacent two frames, so that the luminance of the light source group is different from the luminance of the adjacent two frames, the transition of the luminance of the light source group between the first frame and the second frame is realized, and the phenomenon that the switching between the two frames with different gray scales is abrupt is improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to the field of display panel manufacturing technology, specifically to lamp boards and their control methods, and display panels. Background Technology

[0002] With the development of LED (Light Emitting Diode) technology, Mini LED (Mini Light Emitting Diode) and Micro LED (Micro Light Emitting Diode) backlight technologies have emerged.

[0003] Taking Mini LED backlight technology as an example, the PWM signal controls the on and off times of the Mini LED in each cycle to achieve brightness adjustment. However, due to the limitations of the Mini LED driver IC's manufacturing process, the minimum pulse length in the PWM signal cannot be set short enough, resulting in a small number of bits in the PWM signal. This leads to abrupt switching between two frames with different gray levels, reducing the quality of the displayed image.

[0004] Therefore, the display quality of existing Mini LED backlight technology-based display panels is low and urgently needs improvement. Summary of the Invention

[0005] The present invention provides a lamp board and its control method, and a display panel to solve the technical problem that the display quality is low due to the large minimum pulse length in the PWM signal of the display panel made by the existing Mini LED backlight technology.

[0006] This invention provides a light panel, comprising:

[0007] At least one light source group, wherein the light source group includes at least two light sources;

[0008] A driver chip, including at least one driver group;

[0009] At least one first switching element group, the first switching element group including at least two first switching elements, the input terminal and the output terminal of the first switching element and the corresponding light source are connected in series between the first power line and the drive group, and the control terminal of the first switching element is electrically connected to the controller.

[0010] In one embodiment, each of the light sources in the light source group is provided with a corresponding first switching element, and each of the light sources in the light source group and the corresponding first switching element are connected in series between a first power line and the corresponding drive group.

[0011] In one embodiment, the first switching element is a transistor.

[0012] In one embodiment, the drive group includes:

[0013] The second switching element, the first switching element, the corresponding light source, and the corresponding second switching element are all connected in series between the first power line and the second power line;

[0014] A pulse width modulation module is connected between the source driver and the control terminal of the second switching element.

[0015] In one embodiment, the drive group further includes:

[0016] The current stabilization module is configured in series between the first power line and the second power line, with the first switching element, the corresponding light source, the corresponding second switching element, and the corresponding current stabilization module connected together to stabilize the current flowing through the light source.

[0017] In one embodiment, the current stabilization module includes:

[0018] Third switching element;

[0019] The resistor, the first switching element, the corresponding light source, the corresponding second switching element, the corresponding third switching element, and the corresponding resistor are connected in series between the first power line and the second power line;

[0020] A voltage comparator includes a first input terminal, a second input terminal, and an output terminal. The first input terminal is connected to the source driver, the second input terminal is connected between the resistor and the third switching element, and the output terminal is connected to the control terminal of the third switching element.

[0021] In one embodiment, the drive group includes a second power line, and either the second power line or the first power line is grounded.

[0022] The present invention also provides a method for controlling a light panel, for controlling a light panel as described in any of the preceding claims, comprising:

[0023] In the first frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a first brightness; and in the second frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a second brightness. The first frame and the second frame are two adjacent frames.

[0024] During the transition period between the first frame and the second frame, the luminous intensity of the corresponding light source is controlled by each of the first switching elements to give the light source group a transitional brightness, which is between the first brightness and the second brightness.

[0025] In one embodiment, the step of controlling the luminous intensity of the corresponding light source through each of the first switching elements to give the light source group a transitional brightness during the transition time period between the first frame and the second frame includes:

[0026] During the first time period of the transition time period, the first switching element group controls n1 of the light sources in the corresponding light source group to emit light, where n1 is a positive integer;

[0027] During the second time period of the transition period, the first switching element group controls n2 of the light sources in the corresponding light source group to emit light, where n2 is a positive integer different from n1.

[0028] The present invention also provides a display panel, including a light panel as described in any of the above descriptions.

[0029] This invention provides a light panel and its control method, and a display panel, comprising: at least one light source group, the light source group including at least two light sources; a driving chip, including at least one driving group; at least one first switching element group, the first switching element group including at least two first switching elements, the input terminal and output terminal of the first switching element being connected in series with the corresponding light source between a first power line and the driving group, and the control terminal of the first switching element being electrically connected to a controller. Specifically, this invention, for at least two light sources in the same light source group, by setting a first switching element between the driving chip and the light source, further adjusts the brightness of a single light source while ensuring that the driving group controls the corresponding multiple light sources to emit light at the same brightness. This achieves a transition in the brightness of the light source group between the first and second frames, improving the abrupt switching phenomenon between two frames with different grayscale levels. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the accompanying drawings described below are merely for illustrating some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the first type of lamp panel provided in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the second type of lamp panel provided in an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram showing the light emission states of different light sources in a light source group provided in an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the third type of lamp panel provided in an embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram of the structure of the fourth type of lamp panel provided in an embodiment of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] The terms "first," "second," "third," etc., used in this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules not listed, or may optionally include other steps or modules inherent to these processes, methods, products, or apparatuses.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] The present invention provides a light panel, which includes, but is not limited to, the following embodiments and combinations thereof.

[0040] In one embodiment, combined with Figure 1 and Figure 2As shown, the lamp board 100 includes: at least one light source group 10, the light source group 10 including at least two light sources 101; a driver chip 20, including at least one driver group 201; at least one first switching element group 30, the first switching element group 30 including at least two first switching elements 301, the input terminal and the output terminal of the first switching element 301 and the corresponding light source 101 are connected in series between the first power line L1 and the driver group 201, and the control terminal of the first switching element 301 is electrically connected to the controller 40.

[0041] Specifically, the lamp board 100 may include a lamp substrate for supporting the light source group 10 and the first switching element group 30. The lamp substrate may be, but is not limited to, a rigid substrate. The driver chip 20 may be located on the side of the lamp substrate away from the light source group 10 or on the side of the lamp substrate, and may be electrically connected to the light source group 10 and the first switching element group 30 by means of, but not limited to, bonding or wiring. The controller 40 may also refer to the relevant description of the driver chip 20. Multiple light sources 101 may be, but is not limited to, arranged in an array on the lamp substrate. Based on this, the multiple light sources 101 can be divided into multiple regions. At least two light sources 101 located in the same region can be defined as a light source group 10. The light sources 101 may include, but are not limited to, at least one of LED, Mini LED, and MicroLED.

[0042] In this embodiment, at least one light source group 10 may be provided with at least one corresponding first switching element group 30 and at least one corresponding driving group 201, and each first switching element group 30 and each driving group 201 may correspond to at least one light source group 10. Furthermore, similarly, this embodiment does not limit the correspondence between the first switching element 301 in the corresponding first switching element group 30 and the light source 101 in the corresponding light source group 10. It should be noted that... Figure 2 The example only uses the light source group 10, which includes four light sources 101 (D1, D2, D3 and D4), but in reality, there are no restrictions on the number of light sources 101 in the light source group 10, the number of the first switching element group 30 corresponding to the light source group 10, and the number of the first switching element 301 in the first switching element group 30.

[0043] Understandably, in this embodiment, based on the fact that at least two light sources 101 in the light source group 10 are controlled by a first voltage V1 applied on the same first power line L1 and a second voltage V2 output by the corresponding same drive group 201, a first switching element 301 is provided for each of the at least two light sources 101, and the control terminal of the first switching element 301 is electrically connected to the controller 40. That is, the controller 40 can control the on-state of multiple first switching elements 301 to individually control the brightness of at least two light sources 101. Furthermore, based on this embodiment, at different times between two frames with different gray levels, for at least one light source group 10, the brightness of at least two light sources 101 can be individually controlled, that is, the brightness of the two light sources 101 can be arbitrarily combined so that the corresponding light source group 10 also presents different brightness. Furthermore, at different times between two frames with different gray levels, the brightness of at least two light sources 101 can be controlled to realize that the gray level or brightness presented by the corresponding light source group 10 gradually changes from the gray level or brightness of the previous frame to the gray level or brightness of the current frame. Therefore, this embodiment can improve the abrupt switching phenomenon between two frames with different gray levels.

[0044] In one embodiment, combined with Figure 1 and Figure 2 As shown, each light source 101 in the light source group 10 is provided with a corresponding first switching element 301. Each light source 101 and its corresponding first switching element 301 are connected in series between the first power line L1 and the corresponding drive group 201. Specifically, based on the above discussion, this embodiment takes the light source group 10, the first switching element group 30, and the drive group 201 as having a one-to-one correspondence, and the first switching element 301 in the corresponding first switching element group 30 also having a one-to-one correspondence with the light source 101 in the corresponding light source group 10 as an example. That is, each first switching element 301 can control the brightness of its corresponding light source 101.

[0045] Understandably, based on the above discussion, at different times between two frames with different gray levels, for at least one light source group 10, the brightness of each light source 101 can be controlled individually, that is, the brightness of multiple light sources 101 can be arbitrarily combined. Furthermore, the gray level or brightness presented by the corresponding light source group 10 can be made to gradually change from the gray level or brightness of the previous frame to the gray level or brightness of the current frame, so as to improve the abrupt switching phenomenon between two frames with different gray levels.

[0046] Specifically, in combination Figure 2 and Figure 3 As shown, this example only uses light source group 10, which includes four light sources 101 (D1, D2, D3, and D4). Further, Figure 2The wiring can be arranged reasonably to achieve D1, D2, D3 and D4 as follows: Figure 3 The D1, D2, D3, and D4 of different colors are arranged in a central pattern to allow for better light mixing, thus improving the reliability of the image display. Specifically, for example, when the light source group 10 needs to switch from a white image with a grayscale of 255 in the previous frame to a black image with a grayscale of 0 in the current frame, the time interval between the previous frame and the current frame can be divided into a first time interval t1, a second time interval t2, and a third time interval t3 arranged sequentially. In the first time interval t1, three light sources 101 (D1, D2, D3, and D4) are controlled to appear as white with a grayscale of 255, and another light source 101 is controlled to appear as black with a grayscale of 0. In the second time interval t2, two light sources 101 are controlled to appear as white with a grayscale of 255, and the other two light sources 101 are controlled to appear as black with a grayscale of 0. In the third time interval t3, one light source 101 is controlled to appear as white with a grayscale of 255, and the other three light sources 101 are controlled to appear as black with a grayscale of 0. This allows the brightness of the light source group 10 to decrease uniformly during the transition from a white image with a grayscale of 255 in the previous frame to a black image with a grayscale of 0 in the current frame.

[0047] In one embodiment, such as Figure 2 As shown, the first switching element 301 is a transistor. In this embodiment, the type of transistor is not limited, and multiple first switching elements 301 can be of the same or different transistor types. Here, we will illustrate this by taking an N-type metal-oxide-semiconductor field-effect transistor as the first switching element 301, and illustrating a one-to-one correspondence between multiple first switching elements 301 and multiple light sources 101. Specifically, in conjunction with the above discussion, in this embodiment, the gate of the transistor can be configured as the control terminal of the first switching element 301 and electrically connected to the controller 40; one of the source and drain of the transistor can be configured as the input terminal of the first switching element 301; and the other of the source and drain of the transistor can be configured as the output terminal of the first switching element 301.

[0048] Understandably, based on the above discussion, the controller 40 can control the gate voltage of each transistor in the first switching element group 30 to control the on / off state of the corresponding transistor, thereby controlling the current flowing through the corresponding transistor and the corresponding light source 101, to achieve control over the brightness of the corresponding light source 101. For example, based on the light source group 10 including four light sources 101: D1, D2, D3, and D4, the corresponding first switching element group 30 can also include four transistors: Q1, Q2, Q3, and Q4, which correspond one-to-one with the four light sources 101: D1, D2, D3, and D4. The controller 40 can send instructions to control the on / off state of Q1, Q2, Q3, and Q4 respectively, to control the brightness of D1, D2, D3, and D4 respectively.

[0049] In one embodiment, combined with Figure 2 , Figure 4 and Figure 5 As shown, the drive group 201 includes: a second switching element 2011, wherein the first switching element 301, the corresponding light source 101, and the corresponding second switching element 2011 are connected in series between the first power line L1 and the second power line L2; and a pulse width modulation module 2012, connected between the source driver 50 and the control terminal of the second switching element 2011. Specifically, the controller 40 can be a timing controller TCON, which can transmit display signals and control signals to the source driver 50. The source driver 50 can generate and transmit a data voltage Vdata to the pulse width modulation module 2012 based on the display signals and control signals. The pulse width modulation module 2012 can generate and load a corresponding PWM signal to the control terminal of the corresponding second switching element 2011 based on a specific frequency and minimum duration, according to the data voltage Vdata with a corresponding duty cycle, to control the multiple light sources 101 in the corresponding light source group 10 to emit light.

[0050] Furthermore, the second switching element 2011 can be, but is not limited to, a transistor. In conjunction with the above discussion, this is illustrated by taking the driving group 201 as an example, which consists of a single transistor Q5. That is, the gate of the transistor Q5 can be configured as the control terminal of the second switching element 2011 and electrically connected to the source driver 50. The source and drain of the transistor Q5, the input and output terminals of any first switching element 301, and the corresponding light source 101 are all connected in series between the first power line L1 and the second power line L2. The voltage applied on the second power line L2 is different from the first voltage V1 applied on the first power line L1.

[0051] In one embodiment, combined with Figure 2 , Figure 4 and Figure 5 As shown, the drive group 201 further includes a current stabilizing module 2013. The first switching element 301, the corresponding light source 101, the corresponding second switching element 2011, and the corresponding current stabilizing module 2013 are all connected in series between the first power line L1 and the second power line L2 to stabilize the current flowing through the light source 101. It can be understood that, in conjunction with the above discussion, the current stabilizing module 2013 in this embodiment is connected in series with at least one corresponding light source 101. This allows for monitoring and adjusting the current flowing through the light source 101. On the one hand, it can prevent excessive current from damaging the light source 101; on the other hand, it can correct and adjust the current flowing through the light source 101 to avoid excessive deviation in the brightness of the corresponding at least one light source 101.

[0052] In one embodiment, combined with Figure 2 , Figure 4 and Figure 5As shown, the current stabilizing module 2013 includes: a third switching element 20131; a resistor 20132, wherein the first switching element 301, the corresponding light source 101, the corresponding second switching element 2011, the corresponding third switching element 20131, and the corresponding resistor 20132 are connected in series between the first power line L1 and the second power line L2; and a voltage comparator 20133, including a first input terminal, a second input terminal, and an output terminal. The first input terminal is connected to the source driver 50, the second input terminal is connected between the resistor 20132 and the third switching element 20131, and the output terminal is connected to the control terminal of the third switching element 20131. The third switching element 20131 can be, but is not limited to, a transistor. Here, we take transistor Q6 as an example. The configuration relationship between the pins of Q6 and the terminals of the third switching element 20131 can be referred to the above descriptions of Q5 and the second switching element 2011.

[0053] Specifically, the source driver 50 can also transmit the data voltage Vdata to the first input terminal of the voltage comparator 20133. Furthermore, a resistor 20132 with an appropriate resistance value can be set to combine the current flowing through the resistor 20132 and the light source 101, so that the voltage at the node between the resistor 20132 and the third switching element 20131 (i.e., the voltage at the second input terminal of the voltage comparator 20133) should theoretically be approximately the data voltage Vdata. Thus, the voltage comparator 20133 compares the actual voltage at the second input terminal of the voltage comparator 20133 with the data voltage Vdata. If the difference between the two exceeds a preset range, the opening degree of the third switching element 20131 can be adjusted through the output terminal of the voltage comparator 20133, thereby adjusting the current flowing through the resistor 20132 and the light source 101 until the difference between the two is within the preset range, so as to achieve a stabilizing effect on the current flowing through the light source 101.

[0054] In one embodiment, combined with Figure 2 , Figure 4 and Figure 5 As shown, the drive group 201 includes the second power line L2, and either the second power line L2 or the first power line L1 is grounded. As discussed above, when the first switching element 301, the second switching element 2011, and the third switching element 20131 are turned on, the current generated by the voltage between the first power line L1 and the second power line L2 can flow into the light source 101, thus enabling the light source 101 to emit light.

[0055] Specifically, for example Figure 4As shown, the second power line L2 is grounded, the voltage V1 applied to the first power line L1 can be greater than 0, the anode of the light source 101 can be electrically connected to the first power line L1, and the cathode of the light source 101 can be electrically connected to the second power line L2; for example... Figure 5 As shown, the first power line L1 is grounded, the voltage V3 applied to the second power line L2 can be greater than 0, the anode of the light source 101 can be electrically connected to the second power line L2, and the cathode of the light source 101 can be electrically connected to the first power line L1. This is understandable. Figure 4 Compared with the embodiments shown Figure 5 In the illustrated embodiment, since the light source group 10 is connected between the first switching element 301, the second switching element 2011, and the third switching element 20131 as a whole and the first power line L1 with a applied voltage V1 greater than 0, the voltage drop generated after the light source 101 is turned on will not increase the voltage of any of the first switching element 301, the second switching element 2011, and the third switching element 20131 connected to the ground side, thus reducing the difficulty of instantaneously turning on the first switching element 301, the second switching element 2011, and the third switching element 20131.

[0056] This invention provides a method for controlling a light panel, used to control any of the light panels described above, see reference. Figures 3 to 5 As shown, the steps may include, but are not limited to, the following steps and combinations thereof.

[0057] S1, in the first frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a first brightness, and in the second frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a second brightness, wherein the first frame and the second frame are two adjacent frames.

[0058] Specifically, based on the above discussion, since multiple light sources 101 in the same light source group 10 are connected in parallel between the first power line L1 and the corresponding drive group 201, further, in the first frame, the brightness of the multiple light sources 101 in the same light source group 10 can be made the same simply by controlling the drive group 201, so that the corresponding light source group 10 has a first brightness. Similarly, in the second frame, the brightness of the multiple light sources 101 in the same light source group 10 can be made the same simply by controlling the drive group 201, so that the corresponding light source group 10 has a second brightness.

[0059] S2, during the transition period between the first frame and the second frame, the luminous intensity of the corresponding light source is controlled by each of the first switching elements to give the light source group a transition brightness, which is between the first brightness and the second brightness.

[0060] In conjunction with the above discussion, in the same light source group 10, at least two light sources 101 are each provided with a corresponding first switching element 301. Therefore, under the control of at least two first switching elements 301, the brightness of the light emitted by at least two light sources 101 can be different, so that the corresponding light source group 10 can have a transition brightness between a first brightness and a second brightness. Specifically, for example, some light sources 101 in the same light source group 10 can be controlled to emit light or not emit light, or the brightness of some light sources 101 can be controlled to be different from the brightness of other light sources 101. Here, there is no restriction on whether the transition brightness is close to the first brightness or the second brightness.

[0061] In one embodiment, reference Figures 3 to 5 As shown, step S2 may include, but is not limited to, the following steps and combinations thereof.

[0062] S201, during the first transition time period of the transition time period, the first switching element group controls n1 of the light sources in the corresponding light source group to emit light, where n1 is a positive integer.

[0063] S202, during the second transition time period of the transition time period, the first switching element group controls n2 of the light sources in the corresponding light source group to emit light. The transition time period includes the first transition time period and the second transition time period arranged in sequence, and n2 is a positive integer different from n1.

[0064] Understandably, since the first transition time period and the second transition time period are two non-overlapping time periods within the transition time period, this embodiment can achieve different brightness levels for the same light source group 10 in the two time periods by controlling the number of light sources 101 emitting light in these two time periods. This ensures that the light source group 10 can present at least two brightness transitions between the first frame and the second frame. Specifically, in conjunction with the above regarding... Figure 3 According to the discussion, the first transition time period and the second transition time period in this embodiment can be any two of the first time period t1, the second time period t2 and the third time period t3.

[0065] Of course, it should be noted that this explanation takes the second transition time period as being after the first transition time period as an example. In this case, the brightness of the light source group 10 during the second transition time period can be between the brightness of the light source group 10 during the first transition time period and the second brightness.

[0066] The present invention provides a display panel, including a light panel as described above, wherein the light panel can be used as a backlight panel or as a pixel layer for displaying images.

[0067] This invention provides a light panel and its control method, and a display panel, comprising: at least one light source group, the light source group including at least two light sources; a driving chip, including at least one driving group; at least one first switching element group, the first switching element group including at least two first switching elements, the input terminal and output terminal of the first switching element being connected in series with the corresponding light source between a first power line and the driving group, and the control terminal of the first switching element being electrically connected to a controller. Specifically, this invention, for at least two light sources in the same light source group, by setting a first switching element between the driving chip and the light source, further adjusts the brightness of a single light source while ensuring that the driving group controls the corresponding multiple light sources to emit light at the same brightness. This achieves a transition in the brightness of the light source group between the first and second frames, improving the abrupt switching phenomenon between two frames with different grayscale levels.

[0068] The above provides a detailed description of the lamp board, its control method, and the display panel provided in the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. 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. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light panel, characterized in that, include: At least one light source group, wherein the light source group includes at least two light sources; A driver chip, including at least one driver group; At least one first switching element group, the first switching element group including at least two first switching elements, the input terminal and the output terminal of the first switching element and the corresponding light source are connected in series between the first power line and the drive group, and the control terminal of the first switching element is electrically connected to the controller; The driving group is configured to control the luminous brightness of at least two corresponding light sources to be the same in the first frame so that the light source group has a first brightness, and to control the luminous brightness of at least two corresponding light sources to be the same in the second frame so that the light source group has a second brightness. The first frame and the second frame include at least a transition time period. The controller is used to control the closing state of at least two of the first switching elements in the first switching element group to control the number of light sources emitting light in the corresponding light source group, so that the brightness of the light source group during the transition time period is between the first brightness and the second brightness. Specifically, the controller is used to control n1 light sources in the corresponding light source group to emit light during the first transition time period of the transition time period through the first switching element group, where n1 is a positive integer; and to control n2 light sources in the corresponding light source group to emit light during the second transition time period of the transition time period through the first switching element group, where n2 is a positive integer different from n1.

2. The lamp panel according to claim 1, characterized in that, Each of the light sources in the light source group is provided with a corresponding first switching element, and each of the light sources in the light source group and the corresponding first switching element are connected in series between the first power line and the corresponding drive group.

3. The lamp panel according to claim 1, characterized in that, The first switching element is a transistor.

4. The lamp panel according to claim 1, characterized in that, The drive group includes: The second switching element, the first switching element, the corresponding light source, and the corresponding second switching element are all connected in series between the first power line and the second power line; A pulse width modulation module is connected between the source driver and the control terminal of the second switching element.

5. The lamp panel according to claim 4, characterized in that, The drive group also includes: The current stabilization module is configured in series between the first power line and the second power line, with the first switching element, the corresponding light source, the corresponding second switching element, and the corresponding current stabilization module connected together to stabilize the current flowing through the light source.

6. The lamp panel according to claim 5, characterized in that, The current stabilization module includes: Third switching element; The resistor, the first switching element, the corresponding light source, the corresponding second switching element, the corresponding third switching element, and the corresponding resistor are connected in series between the first power line and the second power line; A voltage comparator includes a first input terminal, a second input terminal, and an output terminal. The first input terminal is connected to the source driver, the second input terminal is connected between the resistor and the third switching element, and the output terminal is connected to the control terminal of the third switching element.

7. The lamp panel according to claim 4, characterized in that, The drive group includes a second power line, and either the second power line or the first power line is grounded.

8. A method for controlling a light panel, characterized in that, For controlling the lamp panel as described in any one of claims 1 to 7, comprising: In the first frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a first brightness; and in the second frame, the light emission brightness of at least two corresponding light sources is controlled to be the same by the driving group so that the light source group has a second brightness. The first frame and the second frame are two adjacent frames. During the transition period between the first frame and the second frame, the luminous brightness of the corresponding light source is controlled by each of the first switching elements to give the light source group a transition brightness, which is between the first brightness and the second brightness. The step of controlling the luminous intensity of the corresponding light source through each of the first switching elements to give the light source group a transitional brightness during the transition time period between the first frame and the second frame includes: During the first transition period of the transition period, the first switching element group controls n1 light sources in the corresponding light source group to emit light, where n1 is a positive integer. During the second transition period of the transition period, the first switching element group controls n2 of the light sources in the corresponding light source group to emit light, where n2 is a positive integer different from n1.

9. A display panel, characterized in that, Includes the lamp panel as described in any one of claims 1 to 7.

Images