Light-emitting module and control method thereof, and display module

Abstract

The present invention provides a light-emitting module and a control method thereof, and a display module, comprising: a substrate, a light source layer and a driving layer located on the substrate, wherein the light source layer comprises a plurality of light source groups, the light source groups comprise a first sub-light source and a second sub-light source, the driving layer comprises a multi-stage driving chip, the driving chip comprises a first sub-light source pin electrically connected to the corresponding first sub-light source, and a second sub-light source pin electrically connected to the corresponding second sub-light source; wherein the plurality of first sub-light source pins and the plurality of second sub-light source pins of the multi-stage driving chip in the present invention are used for time-sharing transmission of address signals and display signals, thereby reducing the number of pins of the driving chip and thus reducing the cost.

Description

Technical Field

[0001] The present invention relates to the field of display technology, in particular to the field of display module manufacturing technology, and specifically to a light-emitting module and a control method thereof, and a display module. Background Art

[0002] With higher requirements for display image quality, technologies such as sub-millimeter light emitting diodes and micrometer light emitting diodes have received widespread attention.

[0003] Among them, for light-emitting diodes used in light-emitting modules, one or more light-emitting diodes need to be equipped with corresponding driver chips to be driven to emit light; however, existing driver chips need to be equipped with more pins to realize the transmission of multiple signals, resulting in high cost of driver chips.

[0004] Therefore, the existing light emitting diode light emitting module technology has a problem of high cost of driver chips, which needs to be solved urgently. Summary of the invention

[0005] The embodiments of the present invention provide a light emitting module and a control method thereof, and a display module to solve the technical problem of high cost of a driving chip in the existing light emitting module technology of sub-millimeter light emitting diodes.

[0006] An embodiment of the present invention provides a light-emitting module, comprising:

[0007] substrate;

[0008] A light source layer, located on the substrate, includes a plurality of light source groups, each of which includes a first sub-light source and a second sub-light source;

[0009] A driving layer, located on the substrate, comprising a multi-stage driving chip, wherein the driving chip comprises a first sub-light source pin electrically connected to the corresponding first sub-light source, and a second sub-light source pin electrically connected to the corresponding second sub-light source;

[0010] Wherein, the plurality of first sub-light source pins and the plurality of second sub-light source pins of the multi-level driving chip are used for time-sharing transmission of address signals and display signals.

[0011] In one embodiment, the driving chip is configured to control the corresponding first sub-light source pin and the second sub-light source pin to transmit the address signal when powered on.

[0012] In one embodiment, the driver chip further comprises a multiplexing control pin, and a plurality of the multiplexing control pins of the multiple-stage driver chips are all loaded with an enable signal;

[0013] The enable signal controls a plurality of the first sub-light source pins and a plurality of the second sub-light source pins of the multi-stage driver chip to transmit the address signal or the display signal.

[0014] In one embodiment, the driving layer further includes:

[0015] A controller, electrically connected to the first sub-light source pin of the first-stage driving chip;

[0016] The second sub-light source pin of the driver chip at the current level is electrically connected to the first sub-light source pin of the driver chip at the next level;

[0017] Among them, when multiple first sub-light source pins and multiple second sub-light source pins are used to load the address signal, the controller loads the first-level address signal to the first sub-light source pin of the first-level driver chip, and the driver chip at this level is used to generate the address signal of the next level according to the address signal of this level, and transmit the address signal of the next level to the driver chip at the next level.

[0018] In one embodiment, the first sub-light source pin or the second sub-light source pin of the last-stage driver chip is electrically connected to the controller, so that the controller confirms whether the address signal has been transmitted.

[0019] In one embodiment, when a plurality of the first sub-light source pins and a plurality of the second sub-light source pins are used to transmit the display signal, the controller loads the display signal to the multiplexing control pin of each level of the driver chip;

[0020] Wherein, the driver chip drives the corresponding first sub-light source to emit light through the corresponding first sub-light source pin according to the address information of the corresponding level, and drives the corresponding second sub-light source to emit light through the second sub-light source pin.

[0021] In one embodiment, the light source group further includes a third sub-light source, and the driver chip further includes a third sub-light source pin electrically connected to the corresponding third sub-light source;

[0022] Wherein, the third sub-light source pin is located between the corresponding first sub-light source pin and the corresponding second sub-light source pin.

[0023] The embodiment of the present invention also provides a control method of a light emitting module, which is used to control the light emitting module as described above, wherein the driving chip further includes a multiplexed control pin; the control method includes:

[0024] Loading a first-stage address signal to a first sub-light source pin of a first-stage driver chip;

[0025] Generate the address signal of the next level according to the address signal of the current level, and transmit the address signal of the next level to the driver chip of the next level;

[0026] If the first sub-light source pin or the second sub-light source pin of the last-stage driver chip transmits a signal to the controller for the controller to confirm that the addresses of the multiple-stage driver chips have been configured, the controller is controlled to load a display signal to the multiplexed control pin of each stage of the driver chip;

[0027] According to the address information of the corresponding level configured by the driving chip, a display signal of the corresponding level in the display signal is obtained to drive the corresponding light source group to emit light.

[0028] In one embodiment, before the step of loading the first-stage address signal to the first sub-light source pin of the first-stage driver chip, the step includes:

[0029] An enable signal is loaded to the multiplexed control pins of the multiple stages of the driver chips to control the first sub-light source pin and the second sub-light source pin of each stage of the driver chip to transmit the address signal.

[0030] In one embodiment, before the step of controlling the controller to load a display signal to the multiplexed control pin of each level of the driver chip, the step includes:

[0031] Enable signals are loaded to the multiplexed control pins of the multiple-stage driver chips to control the multiplexed control pins, the first sub-light source pins and the second sub-light source pins of each stage of the driver chip to transmit the display signal.

[0032] An embodiment of the present invention provides a display module, comprising any light-emitting module as described above.

[0033] The present invention provides a light-emitting module and a control method thereof, and a display module, comprising: a substrate; a light source layer, located on the substrate, comprising a plurality of light source groups, the light source groups comprising a first sub-light source and a second sub-light source; a driving layer, located on the substrate, comprising a multi-stage driving chip, the driving chip comprising a first sub-light source pin electrically connected to the corresponding first sub-light source, and a second sub-light source pin electrically connected to the corresponding second sub-light source; wherein, the plurality of first sub-light source pins and the plurality of second sub-light source pins of the multi-stage driving chip in the present invention are used for time-sharing transmission of address signals and display signals, that is, the plurality of first sub-light source pins and the plurality of second sub-light source pins are time-sharingly multiplexed for transmitting address signals and display signals, so as to avoid separately setting pins for transmitting address signals or display signals, reduce the number of pins of the driving chip and thus reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below by means of the accompanying drawings. It should be noted that the accompanying drawings described below are only used to explain some embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings based on these accompanying drawings without creative work.

[0035] Figure 1 A schematic top view of a light emitting module provided by an embodiment of the present invention.

[0036] Figure 2 The embodiment of the present invention provides Figure 1 A cross-sectional schematic diagram of the light-emitting module in FIG.

[0037] Figure 3 A schematic diagram of the connection relationship between a driver chip and a corresponding light source group provided by an embodiment of the present invention

[0038] Figure 4 A schematic diagram of the connection relationship between another driving chip and a corresponding light source group provided by an embodiment of the present invention.

[0039] Figure 5 A schematic diagram of the connection relationship between a multi-stage driving chip and multiple light source groups and a signal flow under an address enable signal provided in an embodiment of the present invention.

[0040] Figure 6 A schematic diagram of the connection relationship between a multi-stage driving chip and multiple light source groups and a signal flow under a display enable signal provided in an embodiment of the present invention.

[0041] Figure 7 The present invention provides a flowchart of a method for controlling a light-emitting module. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] The terms "first", "second", etc. of the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules that are not listed, or may optionally include other steps or modules that are inherent to these processes, methods, products or devices.

[0044] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] An embodiment of the present invention provides a light-emitting module, which includes but is not limited to the following embodiments and combinations of the following embodiments.

[0046] In one embodiment, in combination Figures 2 to 6 As shown, the light-emitting module 100 includes: a substrate 10; a light source layer, located on the substrate 10, including a plurality of light source groups 20, the light source group 20 including a first sub-light source 201 and a second sub-light source 202; a driving layer, located on the substrate 10, including a multi-stage driving chip 30, the driving chip 30 including a first sub-light source pin 301 electrically connected to the corresponding first sub-light source 201, and a second sub-light source pin 302 electrically connected to the corresponding second sub-light source 202; wherein, the plurality of first sub-light source pins 301 and the plurality of second sub-light source pins 302 of the multi-stage driving chip 30 are used for time-sharing transmission of address signals and display signals.

[0047] The substrate 10 may include but is not limited to a printed circuit board, a plurality of light source groups 20 may be fabricated on the substrate 10, and a multi-stage driving chip 30 may be attached to the substrate 10. Figure 1 As shown, the multiple light source groups 20 can be arranged in a matrix or in other arrangements. Here, a light source group 20 arranged in a row direction and a column direction is used as an example to illustrate the matrix arrangement. Further, the multi-stage driving chip 30 can correspond to the multiple light source groups 20 one by one. Figures 1 to 6 As shown, the light source group 20 may include a plurality of sub-light sources, and the plurality of sub-light sources at least include a first sub-light source 201, a second sub-light source 202 (eg Figure 3 ), further, the corresponding driving chip 30 may include a plurality of sub-light source pins corresponding one-to-one to the corresponding plurality of sub-light sources, and each sub-light source is electrically connected to the corresponding sub-light source pin, and the plurality of sub-light source pins include a first sub-light source pin 301 corresponding to the first sub-light source 201, and a second sub-light source pin 302 corresponding to the second sub-light source 202.

[0048] Specifically, in this embodiment, the number of sub-light sources of the light source group 20 and the number of sub-light source pins 302 of the driver chip 30 are not limited. Figure 4As shown, the light source group 20 may further include a third sub-light source 203 and a fourth sub-light source 204, and the corresponding driver chip 30 may further include a third sub-light source pin 303 corresponding to the third sub-light source 203 and a fourth sub-light source pin 304 corresponding to the fourth sub-light source 204. Specifically, each sub-light source in this embodiment may include one or more light-emitting devices, and the light-emitting devices may include but are not limited to at least one of a light-emitting diode, a micron light-emitting diode, or a sub-millimeter light-emitting diode.

[0049] It can be understood that the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-level driving chip 30 in this embodiment can be used to transmit address signals and display signals in time-sharing, that is, for each driving chip 30, the first sub-light source pins 301 and the second sub-light source pins 302 can simultaneously have the function of transmitting address signals and display signals, wherein "transmitting address signals" can be understood as the first sub-light source pin 301 or the second sub-light source pin 302 of the current level driving chip 30 transmitting the address signal to the first sub-light source pin 301 or the second sub-light source pin 302 of the next level driving chip 30, and "transmitting display signals" can be understood as the first sub-light source pin 301 of each level driving chip 30 transmitting the corresponding display signal to the corresponding first sub-light source 201, and the second sub-light source pin 302 of each level driving chip 30 transmitting the corresponding display signal to the corresponding second sub-light source 202; therefore, this embodiment can avoid separately setting pins to transmit address signals or display signals by time-sharing multiplexing of the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302, thereby reducing the cost of the driving chip.

[0050] In one embodiment, in combination Figures 2 to 6 As shown, the driver chip 30 is configured to control the corresponding first sub-light source pin 301 and the second sub-light source pin 302 to transmit the address signal when powered on. Figures 3 to 6 As shown, the driver chip 30 also includes a power pin, which is used to supply power to the driver chip 30. The power pin may include a first power pin 307 and a second power pin 308. The multiple first power pins 307 of the multi-stage driver chip 30 may be electrically connected to the high voltage line to load the high voltage signal, and the multiple second power pins 308 of the multi-stage driver chip 30 may be electrically connected to the ground line to load the ground signal. The driver chip 30 may work under the action of both the high voltage signal and the ground signal. When the multi-stage driver chip 30 is powered on under the action of both the high voltage signal and the ground signal, the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driver chip 30 may be initialized to be used for transmitting address signals.

[0051] Furthermore, when the address signal transmission is completed, for example, when each level of the driver chip 30 obtains the corresponding address, the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multiple levels of the driver chip 30 are set to transmit the display signal, thereby controlling the corresponding light source group 20 to emit light.

[0052] In one embodiment, in combination Figures 4 to 6 As shown, the driver chip 30 also includes a multiplexed control pin 309, and the multiple multiplexed control pins 309 of the multi-level driver chip 30 are all loaded with an enable signal; wherein the enable signal controls the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-level driver chip 30 to transmit the address signal or the display signal.

[0053] It can be understood that the driver chip 30 in this embodiment also includes a multiplexing control pin 309, and the multiple multiplexing control pins 309 of the multi-stage driver chip 30 are all loaded with enable signals. By controlling the specific content of the enable signal, the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driver chip 30 are controlled to transmit address signals or display signals. That is, for each driver chip 30, the first sub-light source pin 301 and the second sub-light source pin 302 can determine whether the address signal or the display signal should be transmitted at this time according to the specific content of the enable signal on the corresponding multiplexing control pin 309, that is, the first sub-light source pin 301 and the second sub-light source pin 302 can be time-division multiplexed to transmit address signals and display signals to avoid setting pins separately to transmit address signals or display signals, which can reduce the cost of the driver chip.

[0054] Specifically, in this embodiment, there is no restriction on the number of driver chips 30 that can be controlled by the same enable signal. Figures 1 to 6 As shown, multiple multiplexed control pins 309 of the multi-stage driving chips 30 located in the same row can be electrically connected to load the same enable signal, and each enable signal can control the multi-stage driving chips 30 located in the same row to transmit address signals or display signals; for example, multiple multiplexed control pins 309 of the multi-stage driving chips 30 located in the same column or randomly assigned can be electrically connected to load the same enable signal; for another example, the multiple multiplexed control pins 309 of all the driving chips 30 can also be electrically connected to load the same enable signal.

[0055] Specifically, no matter what method is used to control the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driving chip 30 for transmitting address signals, a pin that is the same as or different from the multiplexing control pin 309 can be set to load the display enable signal when the address signal is transmitted, so as to control the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driving chip 30 from being used to transmit address signals to being used to transmit display signals, thereby controlling the corresponding light source group 20 to emit light.

[0056] In one embodiment, if Figure 5 and Figure 6 As shown, the light-emitting module 100 further includes: a controller 40, electrically connected to the first sub-light source pin 301 of the first-stage driver chip 30; wherein the second sub-light source pin 302 of the driver chip 30 of the current stage is electrically connected to the first sub-light source pin 301 of the next-stage driver chip 30; wherein, when a plurality of the first sub-light source pins 301 and a plurality of the second sub-light source pins 302 are used to transmit the address signal, the controller 40 loads the first-stage address signal to the first sub-light source pin 301 of the first-stage driver chip 30, and the driver chip 30 of the current stage is used to generate the next-stage address signal according to the address signal of the current stage, and transmit the next-stage address signal to the driver chip 30 of the next stage. The controller 40 may also be included in the driving layer, for example, the controller 40 may also be attached to the substrate 10.

[0057] Among them, the level numbers of "this level" and "next level" are used to describe the multi-level driver chips 30 loaded with the same enable signal, and the example of loading the same enable signal to the n-level driver chip 30 is used for explanation. Specifically, when the enable signal controls the corresponding multiple first sub-light source pins 301 and multiple second sub-light source pins 302 of the multi-level driver chip 30 to transmit the address signal, the first sub-light source pin 301 of the first-level driver chip 30 can receive the first-level address signal sent by the controller 40, and further, the first-level driver chip 30 can process the first-level address signal to generate a second-level address signal and output it to the first sub-light source pin 301 of the second-level driver chip 30 through the second sub-light source pin 302 of the first-level driver chip 30, and so on, until the first sub-light source pin 301 of the n-level driver chip 30 receives the n-level address signal generated by the (n-1)-level driver chip and outputted through the second sub-light source pin 302 of the (n-1)-level driver chip, at which time each driver chip 30 of the n-level driver chip 30 obtains the corresponding address information.

[0058] Specifically, the above-mentioned "the driver chip 30 of this level is used to generate the address signal of the next level according to the address signal of this level" can be understood as the driver chip 30 of this level can perform self-increment, self-decrement or other operations on the address signal of this level to generate the address signal of the next level. For example, the first-level address signal can be "000001", and the first-level driver chip 30 can add 1 to the first-level address signal to become "000010" as the second-level address information and transmit it to the second-level driver chip 30.

[0059] Specifically, the first sub-light source pin 301 of the current level driver chip 30 can be arranged close to the second sub-light source pin 302 of the previous level driver chip 30, and the second sub-light source pin 302 of the current level driver chip 30 can be arranged close to the first sub-light source pin 301 of the next level driver chip 30, so that each level of driver chip 30 can be connected to the previous level driver chip 30 and the next level driver chip 30 by wires. For example, the first sub-light source pin 301 of each driver chip 30 can be located at one end of multiple sub-light source pins, and the second sub-light source pin 302 can be located at the other end of multiple sub-light source pins, and other sub-light source pins (including but not limited to the third sub-light source pin 303 and the fourth sub-light source pin 304) can be located between the first sub-light source pin 301 and the second sub-light source pin 302.

[0060] In one embodiment, in combination Figure 4 and Figure 5 As shown, the first sub-light source pin 301 or the second sub-light source pin 302 of the last-stage driver chip 30 is electrically connected to the controller 40, so that the controller 40 confirms whether the address signal has been transmitted. Specifically, in combination with the above discussion, the first sub-light source pin 301 of the last-stage driver chip 30 can receive the last-stage address signal generated by the penultimate driver chip 30. Since there is no driver chip 30 after the last-stage driver chip 30, the second sub-light source pin 302 of the last-stage driver chip 30 can output the last-stage address signal like the first sub-light source pin 301, or can output an address signal that is theoretically located after the last-stage address signal.

[0061] It can be understood that, in combination with the above discussion, in this embodiment, for example, the controller 40 can be electrically connected to the first sub-light source pin 301 of the last-stage driver chip 30. If the acquired address signal is the last-stage address signal, it can be determined that the address signal has been transmitted, otherwise it can be determined that the address signal has not been transmitted. Similarly, for example, the controller 40 can be electrically connected to the second sub-light source pin 302 of the last-stage driver chip 30, and it can be determined whether the address signal has been transmitted based on the setting method of the second sub-light source pin 302 of the last-stage driver chip 30 and the actual acquired signal. It can be understood that the confirmation signal sent by the last-stage driver chip 30 to the controller 40 for determining whether the address signal has been transmitted can be generated after a preset processing of the address signal, or it can be a preset fixed signal, and the content of the fixed signal has nothing to do with the address signal.

[0062] Furthermore, if it is determined that the address signal transmission has been completed, the enable signal can be controlled to be a display enable signal, so that the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driving chip 30 are set to transmit display signals to the corresponding light source group 20, thereby controlling the corresponding light source group 20 to emit light; otherwise, the enable signal is maintained as an address enable signal, and the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driving chip 30 are still set to transmit address signals.

[0063] In another embodiment, after each level of driver chip 30 transmits an address signal to the next level of driver chip, it can be configured to control the first sub-light source pin 301 and the second sub-light source pin 302 corresponding to the driver chip 30 of the current level to transmit the display signal. In this case, there is no need for the controller to load an enable signal to each level of driver chip 30.

[0064] In one embodiment, in combination Figure 3 , Figure 4 and Figure 6 As shown, when multiple first sub-light source pins 301 and multiple second sub-light source pins 302 are used to transmit the display signal, the controller 40 loads the display signal to the multiplexing control pin 309 of each level of the driver chip 30; wherein the driver chip 30 drives the corresponding first sub-light source 201 to emit light through the corresponding first sub-light source pin 301, and drives the corresponding second sub-light source 202 to emit light through the second sub-light source pin 302 according to the address information of the corresponding level.

[0065] In combination with the above discussion, when the controller 40 determines that the address signal transmission is completed, it can control the enable signal to be a display enable signal or other methods to control the multiple first sub-light source pins 301 and the multiple second sub-light source pins 302 of the multi-stage driving chip 30 from transmitting address signals to transmitting display signals. Specifically, Figure 6 As shown, the multiplexed control pin 309 mentioned above can be multiplexed for transmitting display signals, that is, the display signal generated by the controller 40 is input in parallel to the multiplexed control pin 309 of each level of the driver chip 30, and each level of the driver chip 30 can obtain the partial display signal corresponding to this level from the display signal according to the address information of the corresponding level. Furthermore, for example, the first sub-light source pin 301 can obtain the partial signal corresponding to the first sub-light source 201 from the partial display signal corresponding to this level to drive the corresponding first sub-light source 201 to emit light, and the second sub-light source pin 302 can similarly refer to the description of the first sub-light source pin 301.

[0066] Further, in combination with the above discussion, since each level of the driver chip 30 has obtained the address signal of the corresponding level, and the display signal can include multiple valid address marks and multiple valid display signals corresponding one by one to the multi-level driver chips 30, for example, there is a corresponding valid display signal after each valid address mark, and each level of the driver chip 30 can obtain the same and complete display signal, so each level of the driver chip 30 can obtain the valid display signal corresponding to the valid address mark in the display signal that is the same as or related to the corresponding address signal to transmit it to the corresponding multiple sub-light source pins to control the light emission of the multiple sub-light sources.

[0067] In one embodiment, in combination Figures 4 to 6 As shown, the light-emitting module 100 also includes: a voltage conversion chip 50, which is electrically connected to the plurality of light source groups 20, and the voltage conversion chip 50 and the corresponding first sub-light source pin 301 control the corresponding first sub-light source 201 to emit light, and the voltage conversion chip 50 and the corresponding second sub-light source pin 302 control the corresponding second sub-light source 202 to emit light.

[0068] Specifically, Figures 4 to 6As shown, the voltage conversion chip 50 can convert the initial signal into a working signal through, including but not limited to, voltage conversion, and each sub-light source of the light source group 20 (for example, the first sub-light source 201, the second sub-light source 202, the third sub-light source 203 and the fourth sub-light source 204) is also electrically connected to the voltage conversion chip 50 to load the working signal, and each sub-light source emits light under the action of both the working signal and the voltage on the corresponding sub-light source pin; for example, multiple sub-light sources may include at least one of a sub-millimeter light emitting diode and a micrometer light emitting diode, and one of the cathodes and anodes of the multiple sub-light sources can be electrically connected to the same working line to load the same working signal, and the other of the cathode and anode of each sub-light source can be electrically connected to the corresponding sub-light source pin to emit light.

[0069] The embodiment of the present invention provides a control method of a light emitting module, which is used to control any of the light emitting modules described above, wherein the driving chip further includes a multiplexed control pin; Figure 7 As shown, the control method may include but is not limited to the following steps and a combination of the following steps.

[0070] S1, loading a first-stage address signal to a first sub-light source pin of a first-stage driver chip.

[0071] Among them, combined with the above discussion, it can be known that when the multi-stage driver chip is powered on under the action of both the high-voltage signal and the ground signal, the enable signal can be initialized as an address enable signal, and at this time, the multiple first sub-light source pins and multiple second sub-light source pins of the multi-stage driver chip are used to transmit the address signal. Specifically, the control system can control the controller to load the first-level address signal to the first sub-light source pin of the first-stage driver chip. Of course, according to the above discussion, it can be known that the first-level address signal can be loaded to any sub-light source pin of the first-stage driver chip, not limited to the first sub-light source pin.

[0072] S2, generating the address signal of the next stage according to the address signal of the current stage, and transmitting the address signal of the next stage to the driving chip of the next stage.

[0073] Specifically, in combination with the above discussion, it can be known that after the first sub-light source pin of the first-level driver chip is loaded with the first-level address signal, the control system can control the first-level driver chip to process the first-level address signal to generate a second-level address signal and output it to the first sub-light source pin of the second-level driver chip via the second sub-light source pin of the first-level driver chip. For each level of driver chip, the next level address signal is generated according to the current address signal and transmitted to the next level of driver chip, and so on, until the first sub-light source pin of the n-level driver chip receives the n-level address signal generated by the (n-1)-level driver chip and outputted via the second sub-light source pin of the (n-1)-level driver chip. At this time, each driver chip of the n-level driver chip obtains the corresponding address information.

[0074] Furthermore, in combination with the above discussion, it can be known that the first sub-light source pin or the second sub-light source pin of the last-stage driver chip is electrically connected to the controller, so that the controller confirms whether the address signal has been transmitted.

[0075] S3, determining whether the first sub-light source pin or the second sub-light source pin of the last-stage driver chip transmits a signal to the controller so as to enable the controller to confirm that the addresses of the multiple-stage driver chips have been configured.

[0076] Among them, combined with the above discussion, the confirmation signal sent by the last-level driver chip to the controller to determine whether the address signal has been transmitted can be generated after preset processing of the address signal, or it can be a preset fixed signal, and the content of the fixed signal is independent of the address signal.

[0077] Further, in combination with the above discussion, for example, the controller is electrically connected to the first sub-light source pin of the last-level driver chip, if the acquired address signal is the last-level address signal, it can be determined that the address signal has been transmitted, otherwise it can be determined that the address signal has not been transmitted; similarly, for example, the controller is electrically connected to the second sub-light source pin of the last-level driver chip, it can be determined whether the acquired address signal is the last-level address signal, or further based on the setting method of the second sub-light source pin of the last-level driver chip and the actual acquired signal, whether the acquired address signal is a signal related to the address signal of the last level, thereby determining whether the address signal has been transmitted.

[0078] It is understandable that, in another embodiment, after each level of driver chip 30 transmits an address signal to the next level of driver chip, it can be configured to control the first sub-light source pin 301 and the second sub-light source pin 302 corresponding to the driver chip 30 of this level to transmit the display signal. In this case, there is no need for the controller to load an enable signal to each level of driver chip 30.

[0079] If the first sub-light source pin or the second sub-light source pin of the last-stage driver chip transmits a signal to the controller for the controller to confirm that the addresses of the multiple-stage driver chips have been configured, the following steps are performed including but not limited to.

[0080] S4, controlling the controller to load a display signal to the multiplexed control pin of each level of the driving chip.

[0081] Among them, if the first sub-light source pin or the second sub-light source pin of the last-level driver chip transmits a signal to the controller for the controller to confirm that the addresses of the multi-level driver chips have been configured, that is, it is judged that the address signal transmission is completed. Combined with the above discussion, for example, the enable signal can be controlled to be a display enable signal to set the multiple first sub-light source pins and multiple second sub-light source pins of the multi-level driver chip to transmit display signals.

[0082] Specifically, in combination with the above discussion, "setting the multiple first sub-light source pins, multiple second sub-light source pins and multiplexed control pins of the multi-stage driving chip to transmit display signals" can be understood as: the display signal generated by the controller is input in parallel to the multiplexed control pins of each stage of the driving chip, and each stage of the driving chip can obtain the partial display signal corresponding to the current stage from the display signal according to the address information of the corresponding stage.

[0083] Of course, for any level of driver chip, after the corresponding first sub-light source pin and the corresponding second sub-light source pin have completed transmitting the current level address signal and the next level address signal, the signal of the current level multiplexing control pin can also be set as the display enable signal in a timely manner.

[0084] On the contrary, in combination with the above discussion, if the first sub-light source pin or the second sub-light source pin of the last-level driver chip does not transmit a signal to the controller for the controller to confirm that the addresses of the multi-level driver chips have been configured, it is judged that the address signal has not been transmitted, and the enable signal is maintained as an address enable signal, so that the multiple first sub-light source pins and multiple second sub-light source pins of the multi-level driver chip are still set to transmit address signals.

[0085] S5, acquiring a display signal of a corresponding level in the display signal according to the address information of the corresponding level configured by the driving chip to drive the corresponding light source group to emit light.

[0086] Among them, in combination with the above discussion, when it is determined that the address signal transmission is completed, multiple first sub-light source pins and multiple second sub-light source pins of the multi-level driver chip can be set to transmit display signals at the same time. Specifically, after each level of the driver chip obtains the partial display signal corresponding to the current level from the display signal according to the address information of the corresponding level, the first sub-light source pin can obtain the partial signal corresponding to the first sub-light source from the partial display signal corresponding to the current level to drive the corresponding first sub-light source to emit light, and the second sub-light source pin can refer to the description of the first sub-light source pin in the same way.

[0087] Further, in combination with the above discussion, since each level of the driver chip has obtained the address signal of the corresponding level, and the display signal can include multiple valid address marks and multiple valid display signals corresponding one by one to the multiple levels of driver chips, for example, there is a corresponding valid display signal after each valid address mark, and each level of the driver chip can obtain the same and complete display signal, so each level of the driver chip can obtain the valid display signal corresponding to the valid address mark in the display signal that is the same as or related to the corresponding address signal, and generate and transmit it to the corresponding multiple sub-light source pins to control the light emission of the multiple sub-light sources.

[0088] In one embodiment, before step S1, the following steps may be included but not limited to:

[0089] S0, loading a first enable signal to the multiplexed control pins of the multiple stages of the driver chips to control the first sub-light source pin and the second sub-light source pin of each stage of the driver chip to transmit the address signal.

[0090] Among them, combined with the above discussion, multiple multiplexed control pins of the multi-stage driving chips located in the same row can be electrically connected to load the same enable signal, and each enable signal can control the multi-stage driving chips located in the same row to transmit address signals or display signals. When the multi-stage driving chip is powered on, the specific content of the enable signal transmitted by the multiple multiplexed control pins can be combined. Specifically, when the enable signal is an address enable signal, the first sub-light source pin and the second sub-light source pin of each stage of the driving chip can be controlled to transmit the address signal to execute step S2.

[0091] In one embodiment, before step S4, the following steps may be included but not limited to, and a combination of the following steps.

[0092] S6, loading a second enable signal to the multiplexed control pins of the multiple levels of driver chips to control the multiplexed control pins, the first sub-light source pins and the second sub-light source pins of each level of driver chip to transmit the display signal.

[0093] Similarly, reference may be made to the above description of step S0. When the enable signal is a display enable signal, on the one hand, the multiplexed control pin of each level of the driver chip may be controlled to transmit the display signal to execute step S4; on the other hand, the first sub-light source pin and the second sub-light source pin of each level of the driver chip may be controlled to transmit the display signal to execute step S5.

[0094] The embodiment of the present invention provides a display module, including any of the above-mentioned light-emitting modules. Specifically, the light-emitting module of the present invention can be used as a backlight module or a light-emitting device layer of the display module.

[0095] The present invention provides a light-emitting module and a control method thereof, and a display module, comprising: a substrate; a light source layer, located on the substrate, comprising a plurality of light source groups, the light source groups comprising a first sub-light source and a second sub-light source; a driving layer, located on the substrate, comprising a multi-stage driving chip, the driving chip comprising a first sub-light source pin electrically connected to the corresponding first sub-light source, and a second sub-light source pin electrically connected to the corresponding second sub-light source; wherein, the plurality of first sub-light source pins and the plurality of second sub-light source pins of the multi-stage driving chip in the present invention are used for time-sharing transmission of address signals and display signals, that is, the plurality of first sub-light source pins and the plurality of second sub-light source pins are time-sharingly multiplexed for transmitting address signals and display signals, so as to avoid separately setting pins for transmitting address signals or display signals, reduce the number of pins of the driving chip and thus reduce the cost.

[0096] The light-emitting module and its control method and display module provided in the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light-emitting module, It is characterized in that include: substrate; A light source layer, located on the substrate, includes a plurality of light source groups, each of which includes a first sub-light source and a second sub-light source; A driving layer, located on the substrate, comprising a multi-stage driving chip, wherein the driving chip comprises a first sub-light source pin electrically connected to the corresponding first sub-light source, and a second sub-light source pin electrically connected to the corresponding second sub-light source; Wherein, the plurality of first sub-light source pins and the plurality of second sub-light source pins of the multi-level driving chip are used for time-sharing transmission of address signals and display signals; Wherein, the driving layer further includes: A controller, electrically connected to the first sub-light source pin of the first-stage driving chip; The second sub-light source pin of the driver chip at the current level is electrically connected to the first sub-light source pin of the driver chip at the next level; Among them, when multiple first sub-light source pins and multiple second sub-light source pins are used to transmit the address signal, the controller loads the first-level address signal to the first sub-light source pin of the first-level driver chip, and the driver chip at this level is used to generate the address signal of the next level according to the address signal of this level, and transmit the address signal of the next level to the driver chip at the next level.

2. The light emitting module according to claim 1, It is characterized in that The driving chip is configured to control the corresponding first sub-light source pin and the second sub-light source pin to transmit the address signal when powered on.

3. The light emitting module according to claim 1 or 2, It is characterized in that The driver chip further comprises a multiplexing control pin, and the multiple multiplexing control pins of the multiple-level driver chips are all loaded with an enable signal; The enable signal controls a plurality of the first sub-light source pins and a plurality of the second sub-light source pins of the multi-stage driver chip to transmit the address signal or the display signal.

4. The light emitting module according to claim 1, It is characterized in that The first sub-light source pin or the second sub-light source pin of the last-stage driver chip is electrically connected to the controller, so that the controller confirms whether the address signal has been transmitted.

5. The light emitting module according to claim 1, It is characterized in that When a plurality of the first sub-light source pins and a plurality of the second sub-light source pins are used to transmit the display signal, the controller loads the display signal to the multiplexing control pins of each level of the driver chip; Wherein, the driver chip drives the corresponding first sub-light source to emit light through the corresponding first sub-light source pin according to the address information of the corresponding level, and drives the corresponding second sub-light source to emit light through the second sub-light source pin.

6. The light emitting module according to claim 1, It is characterized in that The light source group further includes a third sub-light source, and the driving chip further includes a third sub-light source pin electrically connected to the corresponding third sub-light source; Wherein, the third sub-light source pin is located between the corresponding first sub-light source pin and the corresponding second sub-light source pin.

7. A control method for a light emitting module, It is characterized in that Used to control the light-emitting module according to claim 2, the driver chip also includes a multiplexed control pin; the control method includes: Loading a first-stage address signal to a first sub-light source pin of a first-stage driver chip; Generate the address signal of the next level according to the address signal of the current level, and transmit the address signal of the next level to the driver chip of the next level; If the first sub-light source pin or the second sub-light source pin of the last-stage driver chip transmits a signal to the controller for the controller to confirm that the addresses of the multiple-stage driver chips have been configured, the controller is controlled to load a display signal to the multiplexed control pin of each stage of the driver chip; According to the address information of the corresponding level configured by the driving chip, a display signal of the corresponding level in the display signal is obtained to drive the corresponding light source group to emit light.

8. The control method of the light emitting module according to claim 7, It is characterized in that Before the step of loading the first-level address signal to the first sub-light source pin of the first-level driver chip, the method includes: A first enable signal is loaded to the multiplexed control pins of the multiple stages of the driver chips to control the first sub-light source pin and the second sub-light source pin of each stage of the driver chip to transmit the address signal.

9. The control method of the light emitting module according to claim 7 or 8, It is characterized in that Before the step of controlling the controller to load a display signal to the multiplexed control pin of each level of the driver chip, the method includes: A second enable signal is loaded to the multiplexed control pins of the multiple-stage driver chips to control the multiplexed control pins, the first sub-light source pin and the second sub-light source pin of each stage of the driver chip to transmit the display signal.

10. A display module, It is characterized in that It comprises a light emitting module as described in any one of claims 1 to 6.

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