Pixel driving circuit, pixel data processing method and electronic equipment

Abstract

The invention discloses a pixel driving circuit, a pixel data processing method and electronic equipment, and belongs to the technical field of display. The display device comprises a display module and a display driving circuit. The display module comprises a plurality of pixels arranged in an array; the display driving circuit comprises a multiplexing control module, a low-pass filtering module, a switch module and a data generation module, each data generation module is used for generating pixel data for driving the pixel group corresponding to the data generation module to emit light, and outputting the pixel data to the pixel group corresponding to the data generation module under the condition that the switch module is communicated with the data generation module and the pixel group corresponding to the data generation module; the multiplexing control module is used for outputting a control signal filtered by the low-pass filtering module to the switch module in a row lightening period of any row of pixels in the display module; and the switch module is used for communicating each data generation module with each column of pixels in the pixel group corresponding to the data generation module in a time-sharing manner under the control of the control signal.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a pixel driving circuit, a pixel data processing method and an electronic device. Background Art

[0002] The display driver chip (DDIC) is an important component of the smart terminal, which is used to generate and transmit pixel data to the display panel to drive the display panel to display. At present, a multiplexer (MUX) solution is usually used to control the connection between different columns of pixels in multiple columns and a single pixel data channel of the DDIC in a time-sharing manner, so that a single pixel data channel can provide pixel data to multiple columns of pixels. Compared with the original solution in which a single pixel data channel can only provide pixel data of a single column of pixels, the number of pixel data channels in the DDIC can be effectively reduced, thereby reducing chip costs.

[0003] In the current MUX solution, the MUX is usually set inside the DDIC. However, the chip process of the DDIC is relatively high, which makes the rising edge / falling edge change trend of the MUX on / off control signal relatively steeper, that is, the slope is larger. This phenomenon indicates that the MUX introduces more high-frequency noise, and its frequency multiplication will cause greater interference to the low-frequency signal of the whole antenna of the smart terminal. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a pixel driving circuit, a pixel data processing method and an electronic device, which can solve the problem that the current MUX introduces a lot of high-frequency noise, resulting in greater low-frequency interference in the antenna of the entire device.

[0005] In a first aspect, an embodiment of the present application provides a display device, including: a display module and a display driving circuit;

[0006] The display module includes a plurality of pixels arranged in an array, and the plurality of pixels arranged in an array are divided into at least one pixel group according to at least two columns of pixels as a group; the display driving circuit includes: a multiplexing control module, a low-pass filtering module, a switch module and a data generating module, and the data generating module corresponds to the pixel group one by one;

[0007] Each of the data generation modules is connected to the pixel group corresponding to the data generation module through the switch module, and the data generation module is used to generate pixel data for driving the pixel group corresponding to the data generation module to emit light, and output the pixel data to the pixel group corresponding to the data generation module when the switch module connects the data generation module and the pixel group corresponding to the data generation module;

[0008] The multiplexing control module is connected to the switching module through the low-pass filtering module. The multiplexing control module is configured to output, during the row lighting period of any row of pixels in the display module, a control signal that has been filtered by the low-pass filtering module to the switching module;

[0009] The switching module is configured to connect each of the data generation modules to the respective column pixels in the pixel group corresponding to the data generation module in a time-division manner under the control of the control signal.

[0010] In a second aspect, an embodiment of the present application provides a pixel data processing method, which is applied to the display device according to any one of the first aspects. The method includes:

[0011] Receiving a target gray level value and a target brightness value of each pixel in a target image to be displayed;

[0012] Obtaining the correspondence relationship among the brightness value, the gray level value, and the pixel data;

[0013] Determining, according to the correspondence relationship, the target pixel data corresponding to the target gray level value and the target brightness value of each pixel in the target image;

[0014] Outputting the target pixel data to the pixels in the display module.

[0015] In a third aspect, an embodiment of the present application provides an electronic device, including a device body and the display device according to any one of the first aspects

[0016] In a fourth aspect, an embodiment of the present application provides an electronic device, which is the electronic device according to any one of the first aspects, and further includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0017] In a fifth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0018] In a sixth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instruction to implement the method described in the second aspect.

[0019] In a seventh aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the method described in the first aspect.

[0020] In the embodiments of the present application, the display device includes: a display module and a display driving circuit. The display driving circuit includes: a multiplexing control module, a low-pass filtering module, a switching module, and at least one data generation module. Each data generation module is connected to the corresponding pixel group of the data generation module through the switching module, and is used to generate pixel data for driving the corresponding pixel group of the data generation module to emit light, and when the switching module connects the data generation module to its corresponding pixel group, output the pixel data to the pixels in the corresponding pixel group of the data generation module. The multiplexing control module is connected to the switching module through the low-pass filtering module, and is used to output a control signal that has been filtered by the low-pass filtering module to the switching module during the row lighting period of any row of pixels in the display module. The switching module is used to connect each data generation module to each column of pixels in its corresponding pixel group in a time-sharing manner under the control of the control signal. In this technical solution, at least the multiplexing control module and the switching module constitute a MUX circuit, which is used to control each data generation module to provide pixel data to the pixels in a time-sharing manner. Moreover, the high-frequency signals in the control signal (i.e., the on / off control signal of the MUX) output by the multiplexing control module can be effectively filtered by the low-pass filtering module, thereby reducing the high-frequency noise introduced by the MUX, reducing the signal interference to the low-frequency band of the whole machine antenna, and solving the EMI radio frequency interference problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a timing diagram of a DDIC provided by an embodiment of the present application;

[0022] Figure 2 is a schematic structural diagram of a display device provided by the related art;

[0023] Figure 3 is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of another display device provided by an embodiment of the present application;

[0025] Figure 5 is a schematic structural diagram of yet another display device provided by an embodiment of the present application;

[0026] Figure 6 is a schematic structural diagram of still another display device provided by an embodiment of the present application;

[0027] Figure 7 is a timing diagram of a control signal provided by an embodiment of the present application;

[0028] Figure 8 is a flowchart of a pixel data processing method provided by an embodiment of the present application;

[0029] Figure 9It is a schematic diagram of an implementation environment of a pixel data processing method provided in an embodiment of the present application;

[0030] Figure 10 is a block diagram of another electronic device provided in an embodiment of the present application;

[0031] Figure 11 It is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] The pixel data processing method, device, image sensor, camera module and electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0035] At present, the market competition of smart terminals is becoming more and more fierce, so how to effectively reduce the cost of smart terminals has become a major research method. DDIC is an important component of smart terminals, which is used to generate and transmit pixel data (Data) to the display panel to drive the display panel to display. At present, the MUX scheme is usually used to time-share control a different column of pixels in multiple columns of pixels to connect with a single pixel data channel of DDIC, so that a single pixel data channel can provide pixel data to multiple columns of pixels. Compared with the original single pixel data channel that can only provide pixel data for a single column of pixels, it can effectively reduce the number of pixel data channels in DDIC and reduce chip costs.

[0036] The current MUX solution is to add a MUX on the display panel, which is called Panel MUX. However, in order to block the MUX on the display panel, it is necessary to increase the border area of the display screen. To avoid the impact of the MUX solution on the border area of the display screen, the E-mux DDIC solution is introduced. By setting the MUX inside the DDIC and taking advantage of the fact that the DDIC is located on the bent back side of the display screen, the impact of the MUX on the border area of the display screen is avoided.

[0037] However, since the chip manufacturing process of the E-mux DDIC is higher than that of the DDIC in the Panel MUX solution, therefore, as Figure 1 shown, the on / off control signal of the MUX in the E-mux DDIC has a relatively steeper change trend of the rising edge / falling edge compared to the on / off control signal of the MUX output by the DDIC in the Panel MUX solution, that is, a larger slope. This phenomenon indicates that more high-frequency noise is introduced into the MUX in the E-mux DDIC, and its harmonics will cause greater interference to the low-frequency band of the whole machine antenna of the smart terminal, resulting in an electromagnetic interference (EMI) radio frequency interference problem.

[0038] It should be noted that Figure 1 take the MUX as 1:2 MUX as an example. In the 1:2 MUX solution, a single pixel data channel is used to provide pixel data for two columns of pixels. In Figure 1 it, T H represents the row lighting period of a single row of pixels. MUX1 represents the on / off control signal of the MUX used to control the conduction or disconnection of each pixel data channel with one column of pixels. MUX2 represents the on / off control signal of the MUX used to control the conduction or disconnection of each pixel data channel with the other column of pixels. Source represents pixel data. SCAN represents the row scan enable signal. And as Figure 1 shown, after MUX1 / MU2 is turned off and before it is turned on again, the source line on the display screen for transmitting pixel data is in a floating state.

[0039] And, as Figure 2As shown, since the E-mux DDIC is usually bent on the back of the display panel (PANEL). Therefore, in the bending area of the display screen, the source signal lines between the E-mux DDIC and the display panel will be relatively close to the whole machine antenna (Ant), and even some of the distances are less than 1 mm. Thus, the small distance between the antenna and the wire easily causes the signal of the source signal line to be coupled by the high-frequency noise of the antenna, forming electromagnetic susceptibility (EMS), which in turn causes water ripples to appear when the display screen is displayed, affecting the display effect of the screen.

[0040] Please refer to Figure 3 , which shows a schematic structural diagram of a display device provided by an embodiment of the present application. The display device can solve the foregoing problems to a certain extent. As Figure 3 shown, the display device 3 includes: a display module 31 and a display driving circuit 32.

[0041] The display module 31 includes a plurality of pixels arranged in an array. The plurality of pixels arranged in an array are divided into at least one pixel group 311 with at least two columns of pixels as a group. The display driving circuit 32 includes: a multiplexing control module 321, a low-pass filtering module 322, a switching module 323, and a data generation module 324. The data generation modules 324 correspond to the pixel groups 311 one by one. Each data generation module 324 is used to provide pixel data for each pixel in the pixel group 311 corresponding to the data generation module 324.

[0042] Each data generation module 324 is connected to the pixel group 311 corresponding to the data generation module 324 through the switching module 323. The data generation module 324 is used to generate pixel data for driving the pixel group 311 corresponding to the data generation module 324 to emit light, and output the pixel data to the pixel group 311 corresponding to the data generation module 324 when the switching module 323 connects the data generation module 324 and the pixel group 311 corresponding to the data generation module 324.

[0043] The multiplexing control module 321 is connected to the switching module 323 through the low-pass filtering module 322. The multiplexing control module 321 is used to output a control signal filtered by the low-pass filtering module 322 to the switching module 323 during the row lighting period of any row of pixels in the display module 31.

[0044] The switch module 323 is used to connect each data generation module 324 to each column of pixels in the pixel group 311 corresponding to the data generation module 324 in a time-division manner under the control of a control signal. Among them, the control signal is used to control each data generation module 324 to be connected to each column of pixels in the pixel group 311 corresponding to it in a time-division manner during the row lighting period of any row of pixels. Time-division connection means that the data generation module 324 is sequentially connected to each column of pixels in the pixel group 311 corresponding to it, and the data generation module 324 is only connected to one column of pixels at a time. For example, assume that the pixel group 311 corresponding to the data generation module 324 includes three columns of pixels, namely the first column of pixels, the second column of pixels, and the third column of pixels. Time-division connection means that the data generation module 324 is first only connected to the first column of pixels, then only connected to the second column of pixels, and then only connected to the third column of pixels.

[0045] In the technical solution of this application, the MUX circuit is at least composed of the multiplexing control module 321 and the switch module 323. The multiplexing control module 321 is used to control, through the switch module 323, each data generation module 324 to be connected to each column of pixels in the pixel group 311 corresponding to it in a time-division manner during the row lighting period of any row of pixels, so that each data generation module 324 provides pixel data to the pixels in the pixel group 311 corresponding to it in a time-division manner, realizing the time-division lighting of the pixels in the display module 31.

[0046] Exemplarily, taking the display device 3 adopting the 1:2 MUX scheme as an example. Each pixel group 311 includes two columns of pixels, namely the first column of pixels and the second column of pixels. Correspondingly, the row lighting period of any row of pixels in the display module 31 includes two column lighting periods T1 - T2.

[0047] The multiplexing control module 321 is used to output, during the first column lighting period T1 in the row lighting period of any row of pixels, a control signal that has been filtered by the low-pass filter module 322 to the switch module 323. This control signal is used to control the switch module 323 to connect each data generation module 324 to the first column of pixels in the pixel group 311 corresponding to it, so that each data generation module 324 outputs pixel data to the first column of pixels corresponding to it. This control signal is also used to control the switch module 323 to disconnect each data generation module 324 from the second column of pixels in the pixel group 311 corresponding to it.

[0048] The multiplexing control module 321 is further configured to output, during the second column lighting period T2 in the row lighting period of any row of pixels, a control signal that has been filtered by the low-pass filter module 322 to the switch module 323. The control signal is used to control the switch module 323 to disconnect each data generation module 324 from the first column of pixels in its corresponding pixel group 311. The control signal is further used to control the switch module 323 to connect each data generation module 324 to the second column of pixels in its corresponding pixel group 311, so that each data generation module 324 outputs pixel data to its corresponding second column of pixels.

[0049] It should be noted that Figure 3 taking the display module 31 including 4 columns of pixels, and each pixel group 311 including two columns of pixels, and the display driving circuit 32 correspondingly including two data generation modules 324 as an example for illustration. In Figure 3 one data generation module 324 is connected to the first column of pixels and the second column of pixels of the display module 31 through the switch module 323; the other data generation module 324 is connected to the third column of pixels and the fourth column of pixels of the display module 31 through the switch module 323. The multiplexing control module 321 is configured to control the switch module 323 during the first column lighting period T1 in the row lighting period of any row of pixels, so that the odd columns (the first column of pixels and the third column of pixels) of the display module 31 receive the pixel data output by the data generation module 324 to drive the odd column pixels to emit light; during the second column lighting period T2, control the switch module 323 so that the even columns (the second column of pixels and the fourth column of pixels) of the display module 31 receive the pixel data output by the data generation module 324 to drive the even column pixels to emit light. It should also be noted that the subsequent drawings will all take the display module 31 including 4 columns of pixels and the display driving circuit 32 correspondingly including two data generation modules 324 as an example for illustration.

[0050] In an embodiment of the present application, the display device includes a display module and a display driving circuit. The display driving circuit includes a multiplexing control module, a low-pass filtering module, a switching module, and at least one data generation module. Each data generation module is connected to a corresponding pixel group of the data generation module through the switching module, and is configured to generate pixel data for driving the pixels of the corresponding pixel group of the data generation module to emit light, and output the pixel data to the pixels in the corresponding pixel group of the data generation module when the switching module connects the data generation module to its corresponding pixel group. The multiplexing control module is connected to the switching module through the low-pass filtering module, and is configured to output a control signal filtered by the low-pass filtering module to the switching module during the row lighting period of any row of pixels in the display module. The switching module is configured to connect each data generation module to each column of pixels in its corresponding pixel group in a time-sharing manner under the control of the control signal. In this technical solution, at least the multiplexing control module and the switching module constitute a MUX circuit for controlling each data generation module to provide pixel data to the pixels in a time-sharing manner. Moreover, the high-frequency signals in the control signal (i.e., the on / off control signal of the MUX) output by the multiplexing control module can be effectively filtered by the low-pass filtering module, thereby reducing the high-frequency noise introduced by the MUX, reducing the signal interference to the low-frequency band of the whole machine antenna, and solving the EMI radio frequency interference problem.

[0051] Optionally, please continue to refer to Figure 3 , the control signal includes a start signal. The start signal is used to control the switching module 323 to connect the data generation module 324 to the pixels in its corresponding pixel group 311. The low-pass filtering module 322 includes at least one low-pass filter. The multiplexing control module 321 has at least two data output terminals. The data output terminals correspond to one column of pixels in each pixel group 311 one by one. Each data output terminal is connected to the switching module 323 through a low-pass filter.

[0052] The multiplexing control module 321 is configured to output the start signal filtered by the low-pass filter to the switching module 323 in a time-sharing manner through at least two data output terminals during the row lighting period of any row of pixels. The switching module 323 is configured to connect a column of pixels corresponding to the data output terminal that outputs the start signal to the data generation module 324 under the control of the start signal.

[0053] Among them, outputting the start signal to the switch module 323 through at least two data output terminals in a time-sharing manner means that the multiplexing control module 321 sequentially transmits the start signal to the switch module 323 through at least two data output terminals, and only one data output terminal outputs the start signal at a single time. For example, it is assumed that each pixel group 311 includes three columns of pixels, namely the first column of pixels, the second column of pixels, and the third column of pixels. The multiplexing control module 321 correspondingly has three data output terminals, namely the first data output terminal, the second data output terminal, and the third data output terminal. Outputting the start signal to the switch module 323 through at least two data output terminals in a time-sharing manner means that the multiplexing control module 321 first transmits the start signal to the switch module 323 only through the first data output terminal, then transmits the start signal to the switch module 323 only through the second data output terminal, and then transmits the start signal to the switch module 323 only through the third data output terminal. Correspondingly, the switch module 323 first connects each data generation module 324 to the first column of pixels in its corresponding pixel group 311 under the control of the start signal transmitted by the first data output terminal, so that the first column of pixels in each pixel group 311 in the display module 31 receives pixel data and emits light. Then, the switch module 323 connects each data generation module 324 to the second column of pixels in its corresponding pixel group 311 under the control of the start signal transmitted by the second data output terminal, so that the second column of pixels in each pixel group 311 in the display module 31 receives pixel data and emits light. Then, the switch module 323 connects each data generation module 324 to the third column of pixels in its corresponding pixel group 311 under the control of the start signal transmitted by the third data output terminal, so that the third column of pixels in each pixel group 311 in the display module 31 receives pixel data and emits light, realizing the driving and lighting of a row of pixels.

[0054] In some embodiments, the control signal further includes a shutdown signal. The shutdown signal is used to control the switch module 323 to disconnect the connection between the data generation module 324 and the pixels in its corresponding pixel group 311. When the multiplexing control module 321 outputs the start signal to the switch module 323 through one data output terminal, the multiplexing control module 321 simultaneously outputs the shutdown signal to the switch module 323 through the remaining data output terminals. The shutdown signal is used to control the switch module 323 to disconnect one column of pixels corresponding to the data output terminal transmitting the shutdown signal from the data generation module 324. The switch module 323 is used to disconnect one column of pixels corresponding to the data output terminal transmitting the shutdown signal from the data generation module 324 under the control of the shutdown signal, so that the pixels in this column cannot receive the pixel data transmitted by the data generation module 324.

[0055] Exemplarily, continuing with the example where the display device 3 adopts a 1:2 MUX scheme. The multiplexing control module 321 has a first data output terminal and a second data output terminal, a total of two data output terminals. The first data output terminal corresponds to the first column of pixels in each pixel group 311; the other second data output terminal corresponds to the second column of pixels in each pixel group 311.

[0056] The multiplexing control module 321 is configured to transmit, through the first data output terminal, a start signal that has been filtered by a low-pass filter to the switch module 323 during the first column lighting period T1 within the row lighting period of any row of pixels, and transmit, through the second data output terminal, a shutdown signal that has been filtered by a low-pass filter to the switch module 323. The switch module 323 is configured to connect each data generation module 324 to the first column of pixels in its corresponding pixel group 311 under the control of the start signal, and disconnect each data generation module 324 from the second column of pixels in its corresponding pixel group 311 under the control of the shutdown signal.

[0057] The multiplexing control module 321 is configured to transmit, through the first data output terminal, a shutdown signal that has been filtered by a low-pass filter to the switch module 323 during the second column lighting period T2 within the row lighting period of any row of pixels, and transmit, through the second data output terminal, a start signal that has been filtered by a low-pass filter to the switch module 323. The switch module 323 is configured to disconnect each data generation module 324 from the first column of pixels in its corresponding pixel group 311 under the control of the shutdown signal, and connect each data generation module 324 to the second column of pixels in its corresponding pixel group 311 under the control of the start signal.

[0058] Further optionally, as Figure 4 shown, the low-pass filtering module 322 includes: at least two low-pass filters 3221. The low-pass filters 3221 correspond one-to-one with the data output terminals. Each data output terminal is connected to the switch module 323 through a different low-pass filter. Each low-pass filter 3221 is configured to filter the control signal transmitted by the data output terminal it is connected to, to filter out the high-frequency signals in the control signal, obtain the filtered control signal, and output the filtered control signal to the switch module 323.

[0059] In this way, by using multiple low-pass filters 3221, it is possible to separately filter each output signal of the multiplexing control module 321, which can make the filtering performance of the low-pass filters 3221 more in line with the filtering requirements of the signal transmitted by this path, and improve the filtering effect of each output signal of the multiplexing control module 321.

[0060] In some embodiments, as Figure 5As shown, the switch module 323 includes a switching element 3231. The switching element 3231 corresponds to each pixel column in the display module 31 one by one. Each switching element is used to control the connection or disconnection between a different column of pixels and the data generation module 324 corresponding to the pixels. Each data output terminal is connected to the target switching element through a low-pass filter 3221, and the target switching element is connected to a column of pixels corresponding to the data output terminal.

[0061] The switching element 3231 is used to connect a column of pixels in the pixel column corresponding to the switching element 3231 to the data generation module 324 under the control of a start signal. In some embodiments, the switching element 3231 is used to disconnect a column of pixels in the pixel column corresponding to the switching element 3231 from the data generation module 324 under the control of a shutdown signal. In an alternative case, the switching element 3231 may be a transistor. Specifically, for example, the switching element 3231 may be a P-channel metal-oxide-semiconductor field-effect transistor (PMOS) or an N-channel metal-oxide-semiconductor field-effect transistor (NMOS).

[0062] Exemplarily, the display module 31 includes a columns of pixels. The switch module 323 correspondingly includes a switching elements 3231, where n is a positive integer. Each switching element 3231 is connected to a different column of pixels and is used to control the connection or disconnection between the column of pixels connected to the switching element 3231 and the target data generation module 324. The target data generation module 324 is the data generation module 324 corresponding to the pixel group 311 where the column of pixels is located.

[0063] Another example, continuing with the display device 3 adopting the 1:2 MUX scheme as an example. The multiplexing control module 321 has a first data output terminal and a second data output terminal, a total of two data output terminals. The first data output terminal corresponds to the first column of pixels in each pixel group 311; the other second data output terminal corresponds to the second column of pixels in each pixel group 311.

[0064] The first data output terminal of the multiplexing control module 321 is connected to the switching element 3231 corresponding to the first column of pixels in each pixel group 311 through the low-pass filter 3221. The multiplexing control module 321 is used to control the switching element 3231 corresponding to the first column of pixels in each pixel group 311 to be synchronously turned on or off. The second data output terminal of the multiplexing control module 321 is connected to the switching element 3231 corresponding to the second column of pixels in each pixel group 311 through the low-pass filter 3221. The multiplexing control module 321 is used to control the switching element 3231 corresponding to the second column of pixels in each pixel group 311 to be synchronously turned on or off.

[0065] The multiplexing control module 321 is configured to transmit a start signal processed by the low-pass filter module 322 to the first target switch through the first data output terminal and transmit a shutdown signal processed by the low-pass filter module 322 to the second target switch through the second data output terminal during the first column lighting period T1 in the row lighting period of any row of pixels. The first target switch refers to the switching element 3231 corresponding to the first column of pixels in each pixel group 311. The second target switch refers to the switching element 3231 corresponding to the second column of pixels in each pixel group 311.

[0066] The first target switch is configured to connect each data generation module 324 to the first column of pixels in its corresponding pixel group 311 under the control of the start signal. The second target switch is configured to disconnect each data generation module 324 from the second column of pixels in its corresponding pixel group 311 under the control of the shutdown signal.

[0067] The multiplexing control module 321 is configured to transmit a shutdown signal processed by the low-pass filter module 322 to the first target switch through the first data output terminal and transmit a start signal processed by the low-pass filter module 322 to the second target switch through the second data output terminal during the second column lighting period T2 in the row lighting period of any row of pixels. The first target switch is configured to disconnect each data generation module 324 from the first column of pixels in its corresponding pixel group 311 under the control of the shutdown signal. The second target switch is configured to connect each data generation module 324 to the second column of pixels in its corresponding pixel group 311 under the control of the start signal.

[0068] In some embodiments of the present application, through experiments, it is measured that the amplitudes of harmonic signals above 8 times are weak, and the influence of the harmonic signals on the radio frequency is small. Therefore, the cut-off frequency f0 of the low-pass filter 3221 (or the low-pass filter module 322) can be set to be less than or equal to 1 / 8 of the minimum antenna frequency to ensure that high-frequency signals with a greater impact on the radio frequency in the control signal output by the multiplexing control module 321 are effectively filtered by the low-pass filter 3221, thereby effectively reducing high-frequency noise with a greater impact on the radio frequency introduced by the MUX circuit.

[0069] Similar to Figure 1 In the embodiments of the present application, the control signal output by the multiplexing control module 321 is not an ideal square wave signal. The maximum slope point of the rising edge / falling edge of the control signal is the signal with the highest frequency in the control signal. Therefore, the more high-frequency signal components in the control signal filtered by the low-pass filter 3221, the greater the slope decrease of the rising edge / falling edge of the control signal, and correspondingly, the longer the duration that the switching module 323 remains in the connected state, the longer the duration of connecting the connected data generation module 324 to the pixel, the longer the charging time of the pixel, and the better the pixel display effect.

[0070] In an alternative implementation, as Figure 6 shown, the low-pass filter 3221 can be an RC low-pass filter. The low-pass filter 3221 can include a first resistor R1 and a first capacitor C1. The first end of the first resistor R1 is connected to the data output end of the multiplexing control module 321, and the second end of the first resistor R1 is respectively connected to the first capacitor C1 and the switching module 323. The first resistor R1 and the first capacitor C1 jointly act to filter out high-frequency signals. Of course, the low-pass filter 3221 can also be other types of low-pass filters. For example, it can be a multi-stage low-pass filter to improve the filtering rate and reduce the circuit volume of the display driving circuit, etc.

[0071] It should be noted that in some embodiments, the multiplexing control module 321 may further include a second resistor R2 and a second capacitor R2 connected to each data output end. Among them, the second resistor R2 is respectively connected to the second capacitor R2 and the data output end. The second resistor R2 and the second capacitor R2 respectively represent the internal resistance and parasitic capacitance existing in the MUX circuit itself.

[0072] In some embodiments of the present application, the high-frequency signals in the control signal output by the multiplexing control module 321 are effectively filtered by the low-pass filtering module 322. Although it can make the slope of the rising edge / falling edge of the control signal decrease to a certain extent, it also makes the duration that the switching module 323 remains in the connected state decrease correspondingly, sacrificing part of the charging time of the pixel. To compensate for the charging time of the pixel, the multiplexing control module 321 introduces the following functions to increase the charging time of the pixel.

[0073] Optionally, the control signal may include: a pre-start signal, a start signal, a pre-close signal, and a close signal. Among them, the voltages of the pre-start signal and the pre-close signal are both between the voltage of the start signal and the voltage of the close signal, and both the pre-start signal and the close signal are used to control the switching module 323 to close, and both the pre-close signal and the start signal are used to control the switching module 323 to open.

[0074] The multiplexing control module 321 is further configured to sequentially output a pre-start signal and a start signal, which are filtered by the low-pass filtering module 322, to the switch module 323 during the i-th column lighting period within the row lighting period of any row of pixels, and sequentially output a pre-turn-off signal and a turn-off signal, which are filtered by the low-pass filtering module 322, to the switch module 323 during the (i + 1)-th column lighting period.

[0075] Among them, the row lighting period of any row of pixels includes: the column lighting periods of the pixels in each column of a single pixel group 311. The i-th column lighting period is the column lighting period of the i-th column pixel in each pixel group 311 within the row lighting period of any row of pixels, and i is a positive integer.

[0076] Exemplarily, taking the display device 3 adopting a 1:2 MUX scheme as an example. i is 2, and each pixel group 311 includes two columns of pixels. The row lighting period of any row of pixels includes: the scanning periods of the pixels in each column of a single pixel group 311.

[0077] The multiplexing control module 321 is further configured to sequentially transmit a pre-start signal and a start signal, which are filtered by the low-pass filtering module 322, to the switch module 323 through the first data output end of the multiplexing control module 321 during the first column lighting period within the row lighting period of any row of pixels, and transmit a pre-turn-off signal and a turn-off signal, which are filtered by the low-pass filtering module 322, to the switch module 323 through the second data output end of the multiplexing control module 321.

[0078] The switch module 323 is configured to disconnect each data generation module 324 from the first column pixels in its corresponding pixel group 311 under the control of the pre-start signal. The switch module 323 is configured to connect each data generation module 324 to the first column pixels in its corresponding pixel group 311 under the control of the start signal, so that the first column pixels in each pixel group 311 of the display module 31 receive pixel data and start to emit light.

[0079] The switch module 323 is configured to connect each data generation module 324 to the second column pixels in its corresponding pixel group 311 under the control of the pre-turn-off signal. At this time, the second column pixels in each pixel group 311 of the display module 31 can still receive pixel data. The switch module 323 is configured to disconnect each data generation module 324 from the second column pixels in its corresponding pixel group 311 under the control of the turn-off signal, so that the second column pixels in each pixel group 311 of the display module 31 stop receiving pixel data.

[0080] The multiplexing control module 321 is further configured to sequentially transmit the pre - off signal and the off signal, which are filtered by the low - pass filtering module 322, to the switch module 323 through the first data output end of the multiplexing control module 321 during the second column lighting period in the row lighting period of any row of pixels, and transmit the pre - start signal and the start signal, which are filtered by the low - pass filtering module 322, to the switch module 323 through the second data output end of the multiplexing control module 321.

[0081] The switch module 323 is configured to connect each data generation module 324 to the first - column pixels in its corresponding pixel group 311 under the control of the pre - off signal. At this time, the first - column pixels in each pixel group 311 of the display module 31 can still receive pixel data. The switch module 323 is configured to disconnect each data generation module 324 from the first - column pixels in its corresponding pixel group 311 under the control of the off signal, so that the first - column pixels in each pixel group 311 of the display module 31 stop receiving pixel data.

[0082] The switch module 323 is configured to disconnect each data generation module 324 from the second - column pixels in its corresponding pixel group 311 under the control of the pre - start signal. At this time, the second - column pixels in each pixel group 311 of the display module 31 still cannot receive pixel data. The switch module 323 is configured to connect each data generation module 324 to the second - column pixels in its corresponding pixel group 311 under the control of the start signal, so that the second - column pixels in each pixel group 311 of the display module 31 start to receive pixel data.

[0083] In some embodiments, before outputting the start signal by the multiplexing control module 321 to control the connection between the data generation module 324 and the pixels, a pre - relationship signal with a voltage less than the off signal and greater than the start signal is output first, so that before the control signal is converted from the off signal to the start signal, it can experience a voltage drop first, but the data generation module 324 and the pixels are still not connected. Furthermore, it continues to drop in voltage to be converted into the start signal. The two - stage voltage - drop operation between the conversion from the off signal to the start signal can make the slope of the rising edge / falling edge of the control signal unchanged, that is, when the noise of the control signal remains unchanged, the speed of the switch module 323 converting from the off state to the on state is accelerated. By shortening the duration of the switch module 323 converting from the off state to the on state, the duration of the switch module 323 maintaining the on state is increased in reverse, and the charging time of the pixels is prolonged.

[0084] Please refer to Figure 7 ， Figure 7 It shows a schematic diagram of the change of the control signal MUX_O of the multiplexing control module 321 directly converting from the off signal to the start signal and then directly converting from the start signal to the off signal. And, Figure 7Also shown is a schematic diagram of the change of the control signal MUX_N of the multiplexing control module 321 from the off signal to the pre-start signal, then to the start signal, - the pre-off signal, and the off signal. Taking the switch module 323 changing from the off state to the start state as an example, by outputting the pre-start signal at the time t1 in advance, a voltage drop operation is started in advance, so that the voltage of the control signal is reduced by V1. Further, at the time t2, the start signal is output to start the voltage reduction operation again, further reducing the control signal so that the switch module 323 is converted to the on state. Obviously, through two voltage reduction operations, the on state of the switch module 323 is advanced by the target duration T, and thus the charging time of the pixel is increased by the target duration T.

[0085] In some embodiments of the present application, the data generation module 324 is further configured to receive the target gray scale value and the target brightness value of each pixel in the target image to be displayed, obtain the correspondence relationship between the brightness value, the gray scale value, and the pixel data, and determine the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image according to the correspondence relationship.

[0086] The data generation module 324 is further configured to output the target pixel data corresponding to the pixel connected to the data generation module 324 to the pixel connected to the data generation module 324 when the switch module 323 connects the data generation module 324 to the pixels in its corresponding pixel group 311.

[0087] Optionally, the correspondence relationship between the brightness value, the gray scale value, and the pixel data may be pre-stored in the data generation module 324, or may be data read by the data generation module 324 from a third-party device. In the correspondence relationship between the brightness value, the gray scale value, and the pixel data, driving the pixel with the pixel data to emit light with the brightness value and the gray scale value corresponding to the pixel data as parameters can make the image displayed by the display module 31 free of moiré.

[0088] After receiving the target gray scale value and the target brightness value of each pixel in the target image to be displayed, for each pixel of the target image, the data generation module 324 may look up the pixel data corresponding to the target gray scale value and the target brightness value of the pixel from the correspondence relationship, determine the pixel data as the target pixel data corresponding to the pixel, and thus obtain the target pixel data of each pixel in the target image. The data generation module 324 may output the target pixel data corresponding to each pixel to each pixel in the display module 31 during the brush period of the target image to display the target image.

[0089] Among them, the target pixel data corresponding to a single pixel in the display module 31 refers to: the target pixel data of the pixel corresponding to the pixel in the display module 31 in the target image. It should be noted that in some embodiments, according to the relationship between the image resolution and the screen resolution of the display module 31. There is a one-to-one, one-to-many, or many-to-one relationship between the pixels in the display module and the pixels in the image. The method for determining the pixel corresponding to the pixel in the display module 31 in the image can refer to the prior art and will not be limited herein.

[0090] Exemplarily, assume that there is a one-to-one correspondence between the pixels in the display module 31 and the pixels in the target image. The corresponding relationships among the brightness value, the gray scale value, and the pixel data include: the brightness value A1, the gray scale value B1, and the pixel data C1 correspond; the brightness value A1, the gray scale value B2, and the pixel data C2 correspond;......; the brightness value A2, the gray scale value B2, and the pixel data C2 correspond;......; the brightness value Ax, the gray scale value Bx, and the pixel data Cx 2 correspond.

[0091] Taking the display device 3 adopting the 1:2 MUX scheme as an example. If the display module 31 includes 16 pixels arranged in a 4×4 array. Then the display module 31 includes two pixel groups 311, namely the first pixel group 311 and the second pixel group 311. The display driving circuit 32 correspondingly includes two data generation modules 324. Among them, the first pixel group 311 includes the first column of pixels and the second column of pixels; the second pixel group 311 includes the third column of pixels and the fourth column of pixels.

[0092] The target image also has 4×4 array arranged pixels. The data generation module 324 can obtain the target gray scale value and the target brightness value of the pixel (1,1) in the target image, the target gray scale value and the target brightness value of the pixel (1,2) in the target image,......, the target gray scale value and the target brightness value of the pixel (4,4) in the target image. Furthermore, according to the corresponding relationships among the brightness value, the gray scale value, and the pixel data, determine the target pixel data of the pixel (1,1), the target pixel data of the pixel (1,2),......, the target pixel data of the pixel (4,4).

[0093] The data generation module 324 corresponding to the first pixel group 311 is used to output the target pixel data of the pixel (1,1) in the target image to the pixel (1,1) in the first pixel group 311, the target pixel data of the pixel (1,2) in the target image to the pixel (1,2) in the first pixel group 311, the target pixel data of the pixel (2,2) in the target image to the pixel (2,1) in the first pixel group 311,...., the target pixel data of the pixel (4,2) in the target image to the pixel (4,1) in the first pixel group 311 when the switch module 323 connects the data generation module 324 to the pixels in its corresponding pixel group 311.

[0094] The data generation module 324 corresponding to the second pixel group 311 is configured to output the target pixel data of the pixel (1, 3) in the target image to the pixel (1, 3) in the second pixel group 311, the target pixel data of the pixel (1, 4) in the target image to the pixel (1, 4), the target pixel data of the pixel (2, 4) in the target image to the pixel (2, 3),..., and the target pixel data of the pixel (4, 4) in the target image to the pixel (4, 3) when the switch module 323 connects the data generation module 324 to the pixels in its corresponding pixel group 311. It should be noted that the pixel in the first row and first column is represented as pixel (1, 1), and the pixels in other rows and columns are represented in an analogous manner.

[0095] Further optionally, the data generation module 324 is further configured to obtain the corresponding relationships among multiple groups of brightness values, gray scale values, and pixel data; for each target pixel in the target image, determine the target pixel data of the target pixel when there is target pixel data corresponding to the target gray scale value and target brightness value of the target pixel in the corresponding relationship; when there is no target pixel data corresponding to the target gray scale value and target brightness value of the target pixel in the corresponding relationship, obtain a first corresponding relationship in the multiple groups of corresponding relationships where the brightness value is less than the target brightness value of the target pixel and the gray scale value is less than the target gray scale value of the target pixel, and a second corresponding relationship where the brightness value is greater than the target brightness value of the target pixel and the gray scale value is greater than the target gray scale value of the target pixel; perform interpolation processing on the brightness values, gray scale values, and pixel data in the first corresponding relationship and the second corresponding relationship to obtain the target pixel data corresponding to the target gray scale value and target brightness value of the target pixel.

[0096] Specifically optionally, when there is no target pixel data corresponding to the target gray scale value and target brightness value of the target pixel in the corresponding relationship, the data generation module 324 obtains the first corresponding relationship and the second corresponding relationship, and performs interpolation processing on the brightness values, gray scale values, and pixel data in the first corresponding relationship and the second corresponding relationship to obtain the target pixel data corresponding to the target gray scale value and target brightness value of the target pixel.

[0097] Among them, the first corresponding relationship is the first corresponding relationship in the multiple groups of corresponding relationships where the brightness value is less than the target brightness value of the target pixel and the gray scale value is less than the target gray scale value of the target pixel. The second corresponding relationship is the second corresponding relationship in the multiple groups of corresponding relationships where the brightness value is greater than the target brightness value of the target pixel and the gray scale value is greater than the target gray scale value of the target pixel.

[0098] Optionally, among multiple sets of corresponding relationships between brightness values, grayscale values, and pixel data, there may be multiple first-group corresponding relationships. The data generation module 324 may determine any one of the multiple first-group corresponding relationships as the first-group corresponding relationship. Alternatively, the data generation module 324 may determine, among the multiple first-group corresponding relationships, the corresponding relationship with the brightness value closest to the target brightness value of the target pixel and / or the grayscale value closest to the target grayscale value of the target pixel as the first-group corresponding relationship. Similarly and optionally, among multiple sets of corresponding relationships between brightness values, grayscale values, and pixel data, there may be multiple second-group corresponding relationships. The data generation module 324 may determine any one of the multiple second-group corresponding relationships as the second-group corresponding relationship. Alternatively, the data generation module 324 may determine, among the multiple second-group corresponding relationships, the corresponding relationship with the brightness value closest to the target brightness value of the target pixel and / or the grayscale value closest to the target grayscale value of the target pixel as the second-group corresponding relationship.

[0099] The data generation module 324 performs interpolation processing on the brightness values, grayscale values, and pixel data in the first-group corresponding relationship and the second-group corresponding relationship to obtain the target pixel data corresponding to the target grayscale value and the target brightness value of the target pixel. Optionally, the interpolation processing may be linear interpolation processing, polynomial interpolation processing, or the like.

[0100] In some embodiments, since the frequency affected by the RF EMS is usually a fixed frequency, the inter-chip difference in the coupling value of the DDIC for display is very small. Thus, as Figure 8 shown, multiple complete machines with centered water ripples can be pre-selected as test prototypes. Based on the multiple test prototypes, the corresponding relationship between the brightness value, grayscale value, and pixel data of the image is tested and compensated until there are no water ripples.

[0101] Select n grayscale values and m brightness values. Then, the grayscale values and brightness values are combined to obtain n×m parameter groups, and each parameter group includes a grayscale value and a brightness value. For each parameter group, the display driving circuit 32 obtains the original image data of the test image, and the grayscale value and brightness value of each pixel in the test image are the values in the parameter group. The data generation module 324 generates initial pixel data according to the original image data of the test image, and drives the pixels to emit light based on the initial pixel data to display the test image. The pixel data generated by the data generation module 324 is repeatedly adjusted until the displayed test image has no water ripples and the display effect meets the image requirements, obtaining the pixel data corresponding to the grayscale value and brightness value in the parameter group, generating a set of corresponding relationships between brightness values, grayscale values, and pixel data, and establishing a compensation table, which includes the corresponding relationship between the set of brightness values, grayscale values, and pixel data.

[0102] Further, the display driving circuit 32 can obtain the original image data of the test image for another set of parameter groups, where the gray scale value and brightness value of each pixel in the test image are the values in the parameter group. The data generation module 324 generates initial pixel data based on the original image data of the test image, and drives the pixels to emit light based on the initial pixel data to display the test image. The pixel data generated by the data generation module 324 is repeatedly adjusted until the displayed test image has no moiré pattern and the display effect meets the image requirements, obtaining the pixel data corresponding to the gray scale value and brightness value in the parameter group, generating a corresponding relationship between a set of brightness values, gray scale values, and pixel data, and adding it to the compensation table. By analogy, n×m sets of corresponding relationships between brightness values, gray scale values, and pixel data are obtained, and a compensation table is generated.

[0103] Further, linear interpolation processing can also be performed on the brightness values, gray scale values, and pixel data in the n×m sets of corresponding relationships between brightness values, gray scale values, and pixel data to obtain intermediate brightness, intermediate gray scale values, and their corresponding pixel data, obtaining a full set of corresponding relationships between brightness values, pixel values, and pixel data, and establishing a full compensation table for brightness values and pixel values. The full compensation table (or compensation table) is used for the data generation module 324 to determine the target gray scale value and target brightness value of each pixel in the target image after receiving the target gray scale value and target brightness value of each pixel in the target image to be displayed, so as to achieve compensation of pixel data and solve the problem of moiré interference in display. Among them, in one example, the selected n gray scale values can be 32 / 128 / 255; the selected m brightness values can be 2 nit / 80 nit / 800 nit.

[0104] Exemplarily, as Figure 9 shown, when the processing end of the whole machine triggers the display of the target image, it can transmit the target gray scale value and target brightness value of each pixel in the target image to the data generation module 324 of the display driving circuit. The static random access memory (SRAM) in the display driving circuit stores a full compensation table, which includes multiple sets of corresponding relationships between brightness values, gray scale values, and pixel data. After the data generation module 324 receives the target gray scale value and target brightness value of each pixel in the target image, it can obtain the corresponding relationship between the brightness value, gray scale value, and pixel data from the SRAM, and determine the target pixel data corresponding to the target gray scale value and target brightness value of each pixel in the target image according to the corresponding relationship. The data generation module 324 outputs the target pixel data corresponding to the pixels to the pixels of the display module (screen display end), achieving compensation of pixel data and effectively solving the problem of moiré interference in display.

[0105] In an embodiment of the present application, the display device includes a display module and a display driving circuit. The display driving circuit includes a multiplexing control module, a low-pass filtering module, a switching module, and at least one data generation module. Each data generation module is connected to a corresponding pixel group through the switching module, and is configured to generate pixel data for driving the pixels in the corresponding pixel group of the data generation module to emit light, and output the pixel data to the pixels in the corresponding pixel group of the data generation module when the switching module connects the data generation module to its corresponding pixel group. The multiplexing control module is connected to the switching module through the low-pass filtering module, and is configured to output a control signal that has been filtered by the low-pass filtering module to the switching module during the row lighting period of any row of pixels in the display module. The switching module is configured to connect each data generation module to each column of pixels in its corresponding pixel group in a time-division manner under the control of the control signal. In this technical solution, at least the multiplexing control module and the switching module constitute a MUX circuit for controlling each data generation module to provide pixel data to the pixels in a time-division manner. Moreover, the high-frequency signals in the control signal (i.e., the on / off control signal of the MUX) output by the multiplexing control module can be effectively filtered by the low-pass filtering module, thereby reducing the high-frequency noise introduced by the MUX, reducing the signal interference to the low-frequency band of the whole machine antenna, and solving the EMI radio frequency interference problem.

[0106] The embodiment of the present application further provides a pixel data processing method, which can be applied to the display device provided in the embodiment of the present application. The pixel data processing method includes the following steps S001 to S004:

[0107] In step S001, the target gray scale value and the target brightness value of each pixel in the target image to be displayed are received.

[0108] In step S002, the corresponding relationship among the brightness value, the gray scale value, and the pixel data is obtained.

[0109] In step S003, the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image is determined according to the corresponding relationship.

[0110] In step S004, the corresponding target pixel data is output to the pixels in the display module.

[0111] In some embodiments, the process of determining the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image according to the correspondence relationship may include: for each target pixel in the target image, when there is target pixel data corresponding to the target gray scale value and the target brightness value of the target pixel in the correspondence relationship, determining the target pixel data of the target pixel; when there is no target pixel data corresponding to the target gray scale value and the target brightness value of the target pixel in the correspondence relationship, obtaining a first set of correspondence relationships in multiple sets of correspondence relationships where the brightness value is less than the target brightness value of the target pixel and the gray scale value is less than the target gray scale value of the target pixel, and a second set of correspondence relationships where the brightness value is greater than the target brightness value of the target pixel and the gray scale value is greater than the target gray scale value of the target pixel; performing interpolation processing on the brightness values, gray scale values, and pixel data in the first set of correspondence relationships and the second set of correspondence relationships to obtain the target pixel data corresponding to the target gray scale value and the target brightness value of the target pixel.

[0112] It should be noted that the explanations and implementation manners of each step on the method side can refer to the relevant function descriptions of the foregoing device side, and the embodiments of the present application will not elaborate on this.

[0113] In the embodiments of the present application, the data generation module is connected to the pixel group corresponding to the data generation module through the switch module, and is used to generate pixel data for driving the pixel group corresponding to the data generation module to emit light, and output the pixel data to the pixels in the pixel group corresponding to the data generation module when the switch module connects the data generation module and its corresponding pixel group. The multiplexing control module is connected to the switch module through the low-pass filtering module, and is used to output a control signal filtered by the low-pass filtering module to the switch module during the row lighting period of any row of pixels in the display module. The switch module is used to connect each data generation module and each column of pixels in its corresponding pixel group in a time-sharing manner under the control of the control signal. In this technical solution, at least the multiplexing control module and the switch module constitute a MUX circuit for controlling each data generation module to provide pixel data to the pixels in a time-sharing manner. Moreover, the high-frequency signals in the control signal (i.e., the on / off control signal of the MUX) output by the multiplexing control module can be effectively filtered through the low-pass filtering module, thereby reducing the high-frequency noise introduced by the MUX, reducing the signal interference to the low-frequency band of the whole machine antenna, and solving the EMI radio frequency interference problem.

[0114] Moreover, after receiving the target gray scale value and the target brightness value of each pixel in the target image, the data generation module can obtain the correspondence relationship between the brightness value, the gray scale value, and the pixel data from the SRAM, and determine the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image according to the correspondence relationship. The data generation module 324 outputs the target pixel data corresponding to the pixels to the pixels of the display module (screen display end), realizing the compensation of pixel data and effectively solving the problem of display water ripple interference.

[0115] The image acquisition device in the embodiments of the present application may be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a vehicle-mounted electronic device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiments of the present application do not make specific limitations.

[0116] The electronic device in the embodiments of the present application may be a device with an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems. The embodiments of the present application do not make specific limitations.

[0117] Optionally, as Figure 10 shown, the electronic device 1000 provided in the embodiments of the present application further includes a processor 1001 and a memory 1002. A program or instruction that can run on the processor 1001 is stored on the memory 1002. When the program or instruction is executed by the processor 1001, each step of the above-mentioned embodiment of the pixel data processing method is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here again.

[0118] It should be noted that the electronic device in the embodiments of the present application includes the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0119] Figure 11 A schematic diagram of the hardware structure of an electronic device for implementing the embodiments of the present application. The electronic device 1100 includes, but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110, etc. And the electronic device 1100 further includes a display device provided in the embodiments of the present application.

[0120] The data generation module 324 in the display device is used to receive the target gray scale value and the target brightness value of each pixel in the target image to be displayed; obtain the corresponding relationship between the brightness value, the gray scale value, and the pixel data; determine the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image according to the corresponding relationship; and output the corresponding target pixel data to the pixels in the display module.

[0121] In the embodiment of the present application, the display device includes a display module and a display driving circuit. The display driving circuit includes a multiplexing control module, a low-pass filtering module, a switching module, and at least one data generation module. Each data generation module is connected to the corresponding pixel group through the switching module, and is used to generate pixel data for driving the corresponding pixel group to emit light, and output the pixel data to the pixels in the corresponding pixel group of the data generation module when the switching module connects the data generation module to its corresponding pixel group. The multiplexing control module is connected to the switching module through the low-pass filtering module, and is used to output a control signal filtered by the low-pass filtering module to the switching module during the row lighting period of any row of pixels in the display module. The switching module is used to connect each data generation module to each column of pixels in its corresponding pixel group in a time-sharing manner under the control of the control signal. In this technical solution, at least the multiplexing control module and the switching module constitute a MUX circuit for controlling each data generation module to provide pixel data to the pixels in a time-sharing manner. Moreover, the high-frequency signals in the control signal (i.e., the on / off control signal of the MUX) output by the multiplexing control module can be effectively filtered through the low-pass filtering module, thereby reducing the high-frequency noise introduced by the MUX, reducing the signal interference to the low-frequency band of the whole machine antenna, and solving the EMI radio frequency interference problem.

[0122] Moreover, after receiving the target gray scale value and the target brightness value of each pixel in the target image, the data generation module 324 can obtain the corresponding relationship between the brightness value, the gray scale value, and the pixel data from the SRAM, and determine the target pixel data corresponding to the target gray scale value and the target brightness value of each pixel in the target image according to the corresponding relationship. The data generation module 324 outputs the target pixel data corresponding to the pixels to the pixels in the display module (screen display end), realizing the compensation of the pixel data and effectively solving the problem of water ripple interference in display.

[0123] Those skilled in the art can understand that the electronic device 1100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1110 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11The structure of the electronic device shown does not limit the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have a different component arrangement, which will not be elaborated here.

[0124] It should be understood that in the embodiments of the present application, the input unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042. The graphics processor 11041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. The other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0125] The memory 1109 can be used to store software programs and various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include a volatile memory or a non-volatile memory, or the memory 1109 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0126] The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1110 either.

[0127] The embodiments of the present application also provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned embodiment of the pixel data processing method and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0128] Wherein, the processor is the processor in the electronic device described in the foregoing embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc, etc.

[0129] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the foregoing embodiment of the pixel data processing method, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0130] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip, etc.

[0131] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0132] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

[0133] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A display device, characterized in that: include: Display module and display driving circuit; The display module includes a plurality of pixels arranged in an array, and the plurality of pixels arranged in an array are divided into at least one pixel group according to at least two columns of pixels as a group; the display driving circuit includes: a multiplexing control module, a low-pass filtering module, a switch module and a data generating module, and the data generating module corresponds to the pixel group one by one; Each of the data generation modules is connected to the pixel group corresponding to the data generation module through the switch module, and the data generation module is used to generate pixel data for driving the pixel group corresponding to the data generation module to emit light, and output the pixel data to the pixel group corresponding to the data generation module when the switch module connects the data generation module and the pixel group corresponding to the data generation module; The multiplexing control module is connected to the switch module through the low-pass filter module, and the multiplexing control module is used to output a control signal filtered by the low-pass filter module to the switch module during a row lighting period of any row of pixels in the display module; The switch module is used for connecting each data generation module with each column of pixels in the pixel group corresponding to the data generation module in a time-sharing manner under the control of the control signal.

2. The display device according to claim 1, characterized in that The control signal includes a start signal; the low-pass filter module includes at least one low-pass filter; the multiplexing control module has at least two data output terminals, the data output terminals correspond one to one with a column of pixels in each pixel group, and each of the data output terminals is connected to the switch module through one of the low-pass filters. The multiplexing control module is used to output the start signal filtered by the low-pass filter to the switch module through the at least two data output terminals in a time-sharing manner during the lighting period of any row of pixels; The switch module is used to connect a column of pixels corresponding to the data output end that outputs the start signal with the data generation module under the control of the start signal.

3. The display device according to claim 2, characterized in that: The low-pass filter module includes at least two low-pass filters, and the low-pass filters correspond to the data output terminals one by one. Each of the data output terminals is connected to the switch module via a different low-pass filter.

4. The display device according to claim 3, characterized in that: The switch module comprises switch elements, the switch elements correspond to pixel columns one by one, each of the data output terminals is connected to a target switch element through the low-pass filter, and the target switch element is connected to a column of pixels corresponding to the data output terminal; The switch element is used to connect a column of pixels in the pixel column corresponding to the switch element with the data generation module under the control of the start signal.

5. The display device according to any one of claims 2 to 4, characterized in that: The low-pass filter includes a first resistor and a first capacitor, wherein a first end of the first resistor is connected to the data output end, and a second end of the first resistor is connected to the first capacitor and the switch module respectively.

6. The display device according to claim 1, characterized in that: The control signal includes: a pre-start signal, a start signal, a pre-shutdown signal and a shut-down signal; The multiplexing control module is further used to sequentially output the pre-start signal and the start signal after filtering by the low-pass filter module to the switch module in the i-th column lighting period of the row lighting period of any row of pixels, and sequentially output the pre-shutdown signal and the shutdown signal after filtering by the low-pass filter module to the switch module in the i+1-th column lighting period. Among them, the voltages of the pre-start signal and the pre-shutdown signal are both between the voltage of the start signal and the voltage of the shut-down signal, and the pre-start signal and the shut-down signal are both used to control the switch module to turn off, and the pre-shutdown signal and the start signal are both used to control the switch module to turn on, and the row lighting period of any row of pixels includes: the column lighting period of each column of pixels in a single pixel group; the i-th column lighting period is the column lighting period of the i-th column of pixels in each of the pixel groups.

7. The display device according to claim 1, characterized in that: The data generation module is also used to receive the target grayscale value and the target brightness value of each pixel in the target image to be displayed, obtain the corresponding relationship between the brightness value, the grayscale value and the pixel data, and determine the target pixel data corresponding to the target grayscale value and the target brightness value of each pixel in the target image according to the corresponding relationship; The data generation module is also used to output the target pixel data corresponding to the connected pixels to the pixels connected by the data generation module when the switch module connects the data generation module with the pixels in the pixel group corresponding to the data generation module.

8. The display device according to claim 7, characterized in that: The data generation module is also used to obtain the corresponding relationship between multiple groups of brightness values, grayscale values ​​and pixel data; For each target pixel in the target image, if there is target pixel data corresponding to the target grayscale value and the target brightness value of the target pixel in the corresponding relationship, determine the target pixel data of the target pixel; In the case that there is no target pixel data corresponding to the target grayscale value and the target brightness value of the target pixel in the corresponding relationship, obtaining a first group of corresponding relationships in which the brightness value is less than the target brightness value of the target pixel and the grayscale value is less than the target grayscale value of the target pixel, and a second group of corresponding relationships in which the brightness value is greater than the target brightness value of the target pixel and the grayscale value is greater than the target grayscale value of the target pixel; Interpolation processing is performed on the brightness value, grayscale value, and pixel data in the first group of corresponding relationships and the second group of corresponding relationships to obtain target pixel data corresponding to the target grayscale value and the target brightness value of the target pixel.

9. A pixel data processing method, characterized in that: Applied to the display device according to any one of claims 1 to 8, the method comprises: Receiving a target grayscale value and a target brightness value for each pixel in a target image to be displayed; Obtain the corresponding relationship between brightness value, grayscale value and pixel data; Determine target pixel data corresponding to the target grayscale value and the target brightness value of each pixel in the target image according to the corresponding relationship; The target pixel data is output to pixels in the display module.

10. An electronic device, characterized in that: It comprises a device body and the display device described in any one of claims 1 to 8.

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