Display driving apparatus, method and display device

Abstract

The application discloses a display driving device, a method and a display device. The display driving device comprises a latch unit and a configuration unit. The latch unit is connected with each data line. The configuration unit is connected with the latch unit and is used for obtaining invalid channel information to be configured, determining invalid data lines from the plurality of data lines based on the invalid channel information, and switching the connection state of the latch unit and the invalid data lines to an invalid state when the number of the invalid data lines is greater than zero, so as to form an invalid channel between the latch unit and the invalid data lines. The application can adjust the connection state of the latch unit and the corresponding invalid data line based on the invalid channel information to be configured, so that the invalid channel demand of different positions and quantities of the display panel can be compatible without modification, the flexible configuration of the invalid channel is realized, the development time is shortened, and the output efficiency of the product is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display driving device, method, and display equipment. Background Technology

[0002] In the field of liquid crystal display panels, different pixel driving architectures use varying numbers of redundant data lines. These redundant data lines are also called dummy data lines. Normally, dummy data lines do not require charging, but they still need dummy data to prevent display abnormalities. The output channel in the display driver that matches the dummy data lines is usually called the dummy channel. The number and location of dummy channels are determined based on the dummy data lines, and dummy channels are typically located at the ends of the display driver.

[0003] However, when pixel driver architecture updates cause changes in the number and / or location of invalid data lines, commonly used display drivers can only be fixed to match invalid data lines located at one end. Therefore, they need to be redesigned to adapt to the new panel requirements, which leads to extended development time and affects product output. Summary of the Invention

[0004] Embodiments of this application provide a display driving device, method, and display apparatus to accommodate invalid channel requirements at different locations and in different numbers on the display panel, thereby shortening product turnaround time.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] In a first aspect, a display driving device is provided for driving a display panel, the display driving device being connected to the display panel, the display panel including a plurality of data lines; the display driving device includes:

[0007] A latching unit, wherein the latching unit is connected to each of the data lines;

[0008] A configuration unit is connected to the latch unit. The configuration unit is used to obtain invalid channel information to be configured, and to determine invalid data lines from a plurality of data lines based on the invalid channel information. When the number of invalid data lines is greater than zero, the configuration unit switches the connection state between the latch unit and the invalid data lines to an invalid state, so that an invalid channel is formed between the latch unit and the invalid data lines.

[0009] In conjunction with the first aspect, before the step of detecting whether the number of invalid data lines is greater than zero, the configuration unit is further configured to:

[0010] Obtain the display data of the display panel, and obtain the data arrangement direction.

[0011] In conjunction with the first aspect, the configuration unit is further configured to:

[0012] When the number of invalid data lines is zero, the display data is written to the latch unit according to the data arrangement direction, so that the latch unit writes the display data to each of the data lines accordingly.

[0013] In conjunction with the first aspect, when the number of invalid data lines is greater than zero, the configuration unit switches the connection state between the latch unit and the invalid data lines to an invalid state, including:

[0014] The configuration unit inserts a first signal corresponding to the invalid channel information into the display data, and writes the display data and the first signal into the latch unit according to the data arrangement direction, so as to switch the connection state of the latch unit and the invalid data line to the invalid state, and cause the latch unit to write the display data into each of the remaining data lines, wherein the remaining data lines are the data lines other than the invalid data lines among the multiple data lines, and the first signal is used to switch the connection state of the latch unit and the invalid data line.

[0015] In conjunction with the first aspect, the display driving device further includes multiple operational amplifier circuits, and the latch unit is connected to each of the data lines through the corresponding operational amplifier circuit;

[0016] The first signal is used to turn off the operational amplifier circuit.

[0017] In conjunction with the first aspect, the display driving device further includes:

[0018] A first acquisition unit is connected to the configuration unit. The first acquisition unit is used to acquire a second signal. When the second signal is at a first level, the first acquisition unit determines that the data arrangement direction is from the first end to the second end of the display driving device. When the second signal is at a second level, the first acquisition unit determines that the data arrangement direction is from the second end to the first end. The second signal is used to characterize the data arrangement direction.

[0019] In conjunction with the first aspect, the invalid channel information includes the location and number of invalid channels; the display driving device further includes:

[0020] The second acquisition unit is connected to the configuration unit. The second acquisition unit is used to acquire a third signal and a fourth signal, and to acquire the position of the invalid channel based on the acquisition time of the third signal and the acquisition time of the fourth signal; and to acquire the number of invalid channels based on the clock interval between the third signal and the fourth signal. The third signal is used to indicate that the invalid channel is located at the first end of the display driving device, and the fourth signal is used to indicate that the invalid channel is located at the second end of the display driving device.

[0021] In conjunction with the first aspect, the second acquisition unit is used to acquire the invalid channel location based on the acquisition time of the third signal and the acquisition time of the fourth signal, including:

[0022] If the acquisition time of the third signal is earlier than the acquisition time of the fourth signal, then the second acquisition unit determines that the invalid channel position is located at the first end;

[0023] If the acquisition time of the third signal is later than the acquisition time of the fourth signal, the second acquisition unit determines that the invalid channel position is located at the second end.

[0024] In a second aspect, a display device is provided, including a display panel, a timing controller, and a display driving device as described in any of the first aspects.

[0025] Thirdly, a display driving method is provided, applied to a display driving device, the display driving device being used to drive a display panel, the display driving device being connected to the display panel, the display panel including multiple data lines, the display driving device including a configuration unit and a latching unit, the latching unit being connected to each of the data lines; the display driving method includes:

[0026] The configuration unit obtains information about invalid channels to be configured.

[0027] The configuration unit determines invalid data lines from among the multiple data lines based on the invalid channel information.

[0028] When the number of invalid data lines is greater than zero, the configuration unit switches the connection state between the latch unit and the invalid data lines to an invalid state, so that an invalid channel is formed between the latch unit and the invalid data lines.

[0029] One of the above technical solutions has the following advantages or beneficial effects:

[0030] Compared with existing technologies, this application provides a display driving device including a latch unit and a configuration unit. The latch unit is connected to each data line, and the configuration unit is connected to the latch unit and is used to acquire invalid channel information to be configured. Based on the invalid channel information, the configuration unit identifies invalid data lines from multiple data lines. Simultaneously, when the number of invalid data lines is greater than zero, the connection state between the latch unit and the invalid data lines is switched to an invalid state, thereby forming an invalid channel between the latch unit and the invalid data lines. The display driving device provided by this application can adjust the connection state between the latch unit and the corresponding invalid data lines based on the invalid channel information to be configured. Therefore, it can be compatible with the invalid channel requirements of different positions and numbers on the display panel without modification, achieving flexible configuration of invalid channels, shortening development time, and improving product output efficiency.

[0031] The present application discloses a display device that is compatible with the requirements of different positions and numbers of invalid channels, and realizes flexible configuration of invalid channels. It has a display driver device with good adaptability, short development time, and high output efficiency.

[0032] This application discloses a display driving method that is compatible with the invalid channel requirements of different positions and numbers on the display panel, enabling flexible configuration of invalid channels, shortening development time, and improving product output efficiency. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a display device according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the overall structure of the display driving device according to an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the specific structure of the display driving device according to an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the processing flow of the configuration unit in an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the overall flow of the display driving method according to an embodiment of this application.

[0039] Figure label:

[0040] 10-Display panel; 11-Data line; 101-Invalid data line; 102-Remaining data line; 20-Display driver; 21-Latch unit; 22-Configuration unit; 23-First acquisition unit; 24-Second acquisition unit; 25-Operational amplifier circuit; 26-Data decoding unit; 201-First output pin; 202-Second output pin; 203-First input pin; 204-Second input pin; 205-Third input pin; 206-Fourth input pin; 30-Timing controller. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0043] In this application, "dummy" means invalid. A dummy channel is an output channel that matches a dummy data line. A dummy state is a non-functional state where no valid signal is connected. The head is the output channel with the smallest sequence number, and the tail is the output channel with the largest sequence number. The term "invalid channel" will be used to refer to a dummy channel thereafter.

[0044] Please see Figure 1 , Figure 1The diagram illustrates the structure of a display device according to an embodiment of this application. The display device, such as a liquid crystal display device, may include a display panel 10, a display driver 20, and a timing controller (TCON) 30. The display panel 10 may include a plurality of data lines 11 and a pixel driving architecture (not shown) connected to each data line 11. The display driver 20 is connected to each data line 11 to write display data to the display panel 10 and drive the display panel 10 to display an image. The timing controller 30 is used to provide the timing signals required for driving the display driver 20. In some examples, the display driver 20 includes at least one chip-on-film (COF) film, and the channel mode of each COF film is adapted to the number of data lines 11.

[0045] Different pixel driving architectures will have varying numbers of redundant data lines 11. For example, the Flip architecture will have at least one redundant data line 11. These redundant data lines 11 (hereinafter referred to as invalid data lines 101 for ease of description) are typically located at one end of the display panel 10 (i.e., near the head a or tail b) and are arranged adjacent to each other. In the production process of the display device, the presence of invalid data lines 101 requires that the channel mode of the COF located at the edge of the display panel 10 be different from the channel mode of the COF located at other positions of the display panel 10. For example, if there are a total of 13 data lines 11 and four COFs are configured, then if the number of invalid data lines 101 is 1, and it is data line 11 with the sequence number 13, then the channel modes of the four COFs are 3, 3, 3, and 4, respectively. This places strict requirements on the data arrangement of the timing controller 30 and the position of the invalid channels of the COFs at the edge, requiring appropriate COFs to be pre-set.

[0046] However, as the batches of display panels 10 change, when the pixel driving architecture is updated, the position and number of invalid data lines 101 required by the display panel 10 will change. Conventional display driving devices 20 can only match invalid data lines 101 located at one end. When the position and / or number of invalid data lines 101 change, they cannot match the new panel requirements in time and need to be redesigned. This will not only increase the development cost of display driving devices 20, prolong the development time, and affect product output, but also limit the design flexibility of photomasks and affect the design and development of new photomasks.

[0047] In view of this, this application provides a display driving device 20, which can determine invalid data lines 101 from multiple data lines 11 based on the acquired invalid channel information, and switch the connection state with the invalid data lines to an invalid state when the number of invalid data lines 101 is greater than zero. Thus, it can be compatible with the invalid channel requirements of different positions and numbers of display panels without modification, realize flexible configuration of invalid channels, shorten development time, improve product output efficiency, and thus solve at least part of the above-mentioned technical problems.

[0048] Please refer to the following: Figure 2 and Figure 3 , Figure 2 The illustration shows the overall structure of the display driving device according to an embodiment of this application. Figure 3 The specific structure of the display driving device according to an embodiment of this application is illustrated. The display driving device 20 includes a latch unit 21 and a configuration unit 22. The latch unit 21 is connected to each data line 11, and the configuration unit 22 is connected to the latch unit 21.

[0049] In some embodiments, the display driver 20 may include a plurality of output pins, each forming an output channel. The plurality of output pins includes a first output pin 201, the number of which is pre-configured according to a working channel mode X. For example, the working channel mode X may be set to 1026, 1020, 960, or 966. If the working channel mode X is less than the total number of output pins of the display driver 20, after configuring the first output pin 201 according to the working channel mode, the remaining output pins become second output pins 202, which are floating output pins. For example, if the display driver 20 includes 726 output pins and the working channel mode X is 720, then the number of first output pins 201 is 720, and the number of second output pins 202 is 6. It is understood that the number of second output pins 202 can be 0, meaning that all output pins are used normally in this case.

[0050] Please see Figure 4 , Figure 4 This illustration shows the processing flow of the configuration unit in this embodiment. The configuration unit 22 is specifically configured to perform the following steps:

[0051] Step 401: Obtain information on invalid channels to be configured.

[0052] In some examples, the display driver device 20 of this application embodiment may further include a first input pin 203, a second input pin 204, and a second acquisition unit 24. The second acquisition unit 24 is connected to the configuration unit 22 and is used to provide invalid channel information to the configuration unit 22. Exemplarily, the invalid channel information may include the location and number of invalid channels. For example, if there are two invalid channels near the head, then the two output channels numbered 1 to 2 are invalid channels. Or, for example, if there are three invalid channels near the tail, then the three output channels numbered 724 to 726 are invalid channels.

[0053] In some examples, the second acquisition unit 24 is configured to perform the following steps:

[0054] Step 1: Obtain the third signal P3 through the first input pin 203 and the fourth signal P4 through the second input pin 204.

[0055] The third signal P3 (e.g., DIO1 signal) is used to indicate that the invalid channel is located at the first end of the display driving device 20, which can be either near the head or near the tail. The fourth signal P4 (e.g., DIO2 signal) is used to indicate that the invalid channel is located at the second end of the display driving device 20, which can be either near the head or near the tail.

[0056] For example, the third signal P3 and the fourth signal P4 can be square wave pulse signals, and the levels of the two square wave pulse signals can be different.

[0057] Step 2: Based on the acquisition time of the third signal P3 and the acquisition time of the fourth signal P4, obtain the location of the invalid channel.

[0058] For example, if the acquisition time of the third signal P3 is earlier than the acquisition time of the fourth signal P4, the invalid channel position is determined to be located at the first end; if the acquisition time of the third signal P3 is later than the acquisition time of the fourth signal P4, the invalid channel position is determined to be located at the second end.

[0059] Taking the first end as the end closer to the head and the second end as the end closer to the tail as an example, if the third signal P3 emits a pulse first, then the invalid channel is determined to be located closer to the head. If the fourth signal P4 emits a pulse first, then the invalid channel is determined to be located closer to the tail.

[0060] Step 3: Based on the clock interval between the third signal P3 and the fourth signal P4, obtain the number of invalid channels.

[0061] Specifically, the time interval between the third signal P3 and the fourth signal P4 can be calculated using the internal operating clock, thereby determining the number of clock intervals.

[0062] Step 402: Based on the invalid channel information, identify the invalid data line 101 from the multiple data lines 11.

[0063] Specifically, based on the number and location of invalid channels, the corresponding invalid data line 101 can be identified, and the remaining data lines 102 are the data lines 11 that can be charged normally.

[0064] Furthermore, in some embodiments, after performing step 402 and before performing step 403, the configuration unit 22 is also configured to perform the following steps:

[0065] Step 404: Obtain the display data D of display panel 10.

[0066] In some examples, the display driver 20 of this application embodiment may further include a third input pin 205. The configuration unit 22 can obtain display data D through the third input pin 205.

[0067] In some examples, the display driver 20 may also include a data decoding unit 26, which is connected to the configuration unit 22 and is used to receive display data D input from the third input pin 205 and to split and receive the display data D according to a preset data transmission protocol.

[0068] Step 405: Obtain the data layout direction.

[0069] In some examples, the display driver device 20 of this application embodiment may further include a fourth input pin 206 and a first acquisition unit 23. The first acquisition unit 23 is connected to the configuration unit 22 and is used to provide the configuration unit 22 with a data arrangement direction through the fourth input pin 206.

[0070] For example, the first acquisition unit 23 is specifically configured to perform the following steps:

[0071] Step 1: Obtain the second signal P2, which is used to characterize the data arrangement direction.

[0072] Step 2: If the second signal P2 is at the first level, then the data arrangement direction is determined to be from the first end to the second end of the display driver 20.

[0073] Step 3: If the second signal P2 is at the second level, then the data arrangement direction is determined to be from the second end to the first end.

[0074] Specifically, taking the first end as the end closer to the head and the second end as the end closer to the tail, with the first level being high and the second level being low as an example, if the second signal P2 is high, then the data arrangement direction is from low to high sequence number, that is, from the head channel to the tail channel; if the second signal P2 is low, then the data arrangement direction is from high to low sequence number, that is, from the tail channel to the head channel.

[0075] It is understood that the embodiments of this application do not limit the execution order of steps 404 and 405. For example, steps 404 and 405 can also be executed simultaneously with step 401.

[0076] Step 403: Check if the number of invalid data lines 101 is greater than zero. If the number of invalid data lines 101 is greater than zero, proceed to step 406; if the number of invalid data lines 101 is equal to zero, proceed to step 407.

[0077] Step 406: When the number of invalid data lines 101 is greater than zero, switch the connection state between latch unit 21 and invalid data lines 101 to invalid state so that an invalid channel is formed between latch unit 21 and invalid data lines 101.

[0078] In some examples, step 406 can be performed specifically through the following steps:

[0079] Step 4061: Insert a first signal corresponding to the invalid channel information into the display data D. The first signal is used to switch the connection state between the latch unit 21 and the invalid data line 101.

[0080] In some examples, the display driver device 20 of this application embodiment may include multiple operational amplifier circuits (OP circuits) 25, and the latch unit 21 is connected to each data line 11 through the corresponding operational amplifier circuit 25. A first signal is used to turn off the operational amplifier circuit 25. For example, the output of the operational amplifier circuit 25 may be turned off. Exemplarily, the operational amplifier circuit 25 may be located within the output channel formed by each output pin.

[0081] Step 4062: According to the data arrangement direction, the display data D and the first signal are written into the latch unit 21 to switch the connection state between the latch unit 21 and the invalid data line 101 to the invalid state, and the latch unit 21 writes the display data D into each of the remaining data lines 102. The remaining data lines 102 are the data lines 11 other than the invalid data line 101 among the multiple data lines 11.

[0082] In some examples, step 4062 can be specifically performed using the following steps:

[0083] First, check whether the displayed data D matches the remaining data lines 102.

[0084] Specifically, the amount of currently received display data D is set to N lines of data, the number of first output pins 201 is the working channel mode X, and the number of invalid channels is Y. It is checked whether N is equal to XY. If N = XY, it is determined that the display data D matches each of the remaining data lines 102. If N ≠ XY, it is determined that the display data D does not match each of the remaining data lines 102 temporarily.

[0085] Then, in response to the display data D matching with each of the remaining data lines 102, the display data D and the first signal are written into the latch unit 21 according to the data arrangement direction. Alternatively, in response to the display data D not matching with each of the remaining data lines 102, the display data D is temporarily stored until all data reception is completed.

[0086] In addition, it is understandable that the corresponding invalid channel can be closed first before writing data, and the specific settings can be flexibly configured according to the needs.

[0087] Step 407: When the number of invalid data lines 101 is zero, according to the data arrangement direction, the display data D is written to the latch unit 21 so that the latch unit 21 writes the display data D to each data line 11 accordingly.

[0088] Specifically, if the number of invalid data lines 101 is zero, then there are no redundant data lines 11 in the current batch, and the data can be written directly into the latch unit 21 according to the data arrangement direction (forward or reverse order).

[0089] It is understood that the display driving device 20 in this application embodiment can be compatible with the panel's requirements for invalid positions and quantities, supports the mode and quantity of invalid channels of the configurable driving chip to meet the panel requirements corresponding to the product, and can also be compatible with the design requirements of new photomasks, reducing the cost of redesigning and developing the driving chip, shortening the development time, and improving the product output efficiency.

[0090] Accordingly, please refer to Figure 5 , Figure 5 This illustration shows the overall flow of the display driving method according to an embodiment of this application. The display driving method of this application embodiment is applied to a display driving device 20 and specifically includes the following steps:

[0091] Step 501: Obtain the information of invalid channels to be configured through configuration sheet 22.

[0092] Step 502: Based on the invalid channel information, the configuration unit 22 determines the invalid data line 101 from the multiple data lines 11.

[0093] Step 503: When the number of invalid data lines is greater than zero, the connection state between the latch unit 21 and the invalid data line 101 is switched to an invalid state by the configuration unit 22, so that an invalid channel is formed between the latch unit 21 and the invalid data line 101.

[0094] In some embodiments, prior to the step of detecting whether the number of invalid data lines 101 is greater than zero, the method further includes:

[0095] The display data D of the display panel 10 is obtained through the configuration unit 22.

[0096] The data arrangement direction is obtained through configuration unit 22.

[0097] In some embodiments, the method further includes:

[0098] When the number of invalid data lines 101 is zero, the configuration unit 22 writes the display data D into the latch unit 21 according to the data arrangement direction, so that the latch unit 21 writes the display data D into each data line 11 accordingly.

[0099] In some embodiments, when the number of invalid data lines is greater than zero, the connection state between the latch unit 21 and the invalid data line 101 is switched to an invalid state by the configuration unit 22, including:

[0100] A first signal corresponding to the invalid channel information is inserted into the display data D. The first signal is used to switch the connection state between the latch unit 21 and the invalid data line 101.

[0101] According to the data arrangement direction, the display data D and the first signal are written to the latch unit 21 to switch the connection state between the latch unit 21 and the invalid data line 101 to the invalid state, and the latch unit 21 writes the display data D to each of the remaining data lines 102. The remaining data lines 102 are the data lines 11 other than the invalid data line 101 among the multiple data lines 11.

[0102] In some embodiments, the first signal is used to turn off the operational amplifier circuit 25 to switch the connection state of the latch unit 21 and the invalid data line 101.

[0103] In some embodiments, obtaining the data arrangement direction through the configuration unit 22 includes:

[0104] The second signal P2 is acquired by the first acquisition unit 23 connected to the configuration unit 22. The second signal P2 is used to characterize the data arrangement direction.

[0105] If the second signal P2 is at the first level, the first acquisition unit 23 determines that the data arrangement direction is from the first end to the second end of the display driving device, and sends the data arrangement direction to the configuration unit 22.

[0106] If the second signal P2 is at the second level, the first acquisition unit 23 determines that the data arrangement direction is from the second end to the first end, and sends the data arrangement direction to the configuration unit 22.

[0107] In some embodiments, invalid channel information includes the location and number of invalid channels. The invalid channel information to be configured is obtained through configuration form 22, including:

[0108] The third signal P3 and the fourth signal P4 are acquired by the second acquisition unit 24 connected to the configuration unit 22. The third signal P3 is used to indicate that the invalid channel is located at the first end of the display driving device 20, and the fourth signal P4 is used to indicate that the invalid channel is located at the second end of the display driving device 20.

[0109] Based on the acquisition time of the third signal P3 and the acquisition time of the fourth signal P4, the position of the invalid channel is acquired by the second acquisition unit 24.

[0110] The number of invalid channels is obtained by the second acquisition unit 24 based on the clock interval between the third signal P3 and the fourth signal P4.

[0111] The second acquisition unit 24 sends the location and number of invalid channels to the configuration sheet 22.

[0112] In some embodiments, the invalid channel position is obtained by the second acquisition unit 24 based on the acquisition time of the third signal P3 and the acquisition time of the fourth signal P4, including:

[0113] If the acquisition time of the third signal P3 is earlier than the acquisition time of the fourth signal P4, then the invalid channel position is determined to be at the first end by the second acquisition unit 24.

[0114] If the acquisition time of the third signal P3 is later than the acquisition time of the fourth signal P4, the invalid channel position is determined to be at the second end by the second acquisition unit 24.

[0115] It is understood that the display driving method of this application embodiment can adjust the connection state between the latch unit 32 and the corresponding invalid data line 101 based on the invalid channel information to be configured, so that it can be compatible with the invalid channel requirements of different positions and numbers of the display panel 10 without modifying the display driving device 20, realize the flexible configuration of invalid channels, shorten development time, and improve product output efficiency.

[0116] Accordingly, the display device of this application embodiment can be compatible with the requirements of different positions and numbers of invalid channels, and realize the flexible configuration of invalid channels. It has a display driver device 20 with good adaptability, short development time, and high output efficiency.

[0117] The above provides a detailed description of a display driving device, method, and display apparatus provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display driving device, characterized by comprising: For driving a display panel, the display driving device is connected to the display panel, the display panel includes multiple data lines, and the display driving device includes: A latching unit, wherein the latching unit is connected to each of the data lines; The first acquisition unit is used to provide the data arrangement direction; The second acquisition unit is used to provide invalid channel information, which includes the location and number of invalid channels. The second acquisition unit provides invalid channel information by: acquiring a third signal and a fourth signal; and, if the acquisition time of the third signal is earlier than the acquisition time of the fourth signal, determining that the invalid channel location is at a first end; if the acquisition time of the third signal is later than the acquisition time of the fourth signal, determining that the invalid channel location is at a second end, so as to acquire the invalid channel location based on the acquisition time of the third signal and the acquisition time of the fourth signal; and, based on the clock interval between the third signal and the fourth signal, acquiring the number of invalid channels, wherein the third signal is used to indicate that the invalid channel is located at the first end of the display driving device, and the fourth signal is used to indicate that the invalid channel is located at the second end of the display driving device. A configuration unit is connected to the latch unit, the first acquisition unit, and the second acquisition unit. The configuration unit acquires the invalid channel information to be configured and determines invalid data lines from a plurality of data lines based on the invalid channel information. Simultaneously, when the number of invalid data lines is greater than zero, the configuration unit inserts a first signal corresponding to the invalid channel information into the display data and writes the display data and the first signal into the latch unit according to the data arrangement direction. This switches the connection state between the latch unit and the invalid data lines to an invalid state, thereby forming an invalid channel between the latch unit and the invalid data lines. The invalid data lines are redundant data lines in the display panel, and the first signal is used to switch the connection state between the latch unit and the invalid data lines.

2. The display driving device according to claim 1, characterized in that, Before the step of detecting whether the number of invalid data lines is greater than zero, the configuration unit is further configured to: Obtain the display data of the display panel, and obtain the data arrangement direction.

3. The display driving device according to claim 2, characterized in that, The configuration unit is also used for: When the number of invalid data lines is zero, the display data is written to the latch unit according to the data arrangement direction, so that the latch unit writes the display data to each of the data lines accordingly.

4. The display driving device according to claim 2, characterized in that, When the number of invalid data lines is greater than zero, the configuration unit switches the connection state between the latch unit and the invalid data lines to an invalid state, and further includes: The configuration unit causes the latching unit to write the display data to each of the remaining data lines, wherein the remaining data lines are the data lines other than the invalid data lines among the multiple data lines.

5. The display driving device according to claim 4, characterized in that, The display driving device further includes multiple operational amplifier circuits, and the latch unit is connected to each of the data lines through the corresponding operational amplifier circuits. The first signal is used to turn off the operational amplifier circuit.

6. The display driving device according to claim 2, characterized in that, The first acquisition unit is used to provide the data arrangement direction, including: A second signal is acquired, and when the second signal is at a first level, the data arrangement direction is determined to be from the first end to the second end of the display driving device; when the second signal is at a second level, the data arrangement direction is determined to be from the second end to the first end, wherein the second signal is used to characterize the data arrangement direction.

7. A display device, characterized in that, include: The display panel, the timing controller, and the display driving device as described in any one of claims 1-6.

8. A display driving method, characterized in that, The method is applied to a display driving device, which drives a display panel and is connected to the display panel. The display panel includes multiple data lines. The display driving device includes a configuration unit, a latching unit, a first acquisition unit, and a second acquisition unit. The latching unit is connected to each of the data lines. The data arrangement direction is provided by the first acquisition unit; The second acquisition unit provides invalid channel information; The configuration unit obtains information about invalid channels to be configured. The configuration unit determines invalid data lines from among the multiple data lines based on the invalid channel information. When the number of invalid data lines is greater than zero, the configuration unit inserts a first signal corresponding to the invalid channel information into the display data, and writes the display data and the first signal into the latch unit according to the data arrangement direction, so as to switch the connection state between the latch unit and the invalid data lines to an invalid state, so as to form an invalid channel between the latch unit and the invalid data lines. The invalid data lines are redundant data lines in the display panel, and the first signal is used to switch the connection state between the latch unit and the invalid data lines. The invalid channel information includes the location and number of invalid channels. Providing the invalid channel information through the second acquisition unit includes: acquiring a third signal and a fourth signal through the second acquisition unit, wherein the third signal indicates that the invalid channel is located at a first end of the display driving device, and the fourth signal indicates that the invalid channel is located at a second end of the display driving device; and, if the acquisition time of the third signal is earlier than the acquisition time of the fourth signal, then the invalid channel is determined to be located at the first end, and if the acquisition time of the third signal is later than the acquisition time of the fourth signal, then the invalid channel is determined to be located at the second end, so as to acquire the invalid channel location based on the acquisition time of the third signal and the acquisition time of the fourth signal; and, based on the clock interval between the third signal and the fourth signal, acquiring the number of invalid channels.

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