WO2024060738A1

WO2024060738A1 - Over-driver apparatus and method, and display apparatus

Info

Publication number: WO2024060738A1
Application number: PCT/CN2023/102451
Authority: WO
Inventors: 李金涛
Original assignee: 惠州视维新技术有限公司
Priority date: 2022-09-22
Filing date: 2023-06-26
Publication date: 2024-03-28
Also published as: CN117174041A

Abstract

An over-driver apparatus (10) and method, and a display apparatus. The over-driver apparatus (10) comprises: a frequency detector (11), which is used for searching, when signal frequencies of two adjacent frames of display data are inconsistent, a preset mapping relationship between frequencies and over-driver lookup tables for a preset over-driver lookup table corresponding to a signal frequency of the latter frame of display data of the two adjacent frames of display data; an over-driver data generator (12), which is connected to the frequency detector (11) and is used for outputting over-driver data according to the two adjacent frames of display data and the preset over-driver lookup table; and a synthesizer (13), which is connected to the over-driver data generator (12) and is used for synthesizing the over-driver data and the latter frame of display data and then outputting display driver data, wherein the ratio of a display time corresponding to the display driver data to an over-driver time corresponding to the over-driver data is constant.

Description

An overdriving device, method and display device

This application claims priority to the Chinese patent application filed with the China Patent Office on September 22, 2022, with the application number 202211177886.8 and the application title "An over-driving device, method and display device", the entire content of which is incorporated by reference. in this application.

Technical field

The present application relates to the field of display technology, and in particular to an overdriving device, method and display device.

Background technique

Overdrive technology (Overdriver, OD: Overdrive) actually changes the voltage of the liquid crystal molecules at the screen end when the display changes in brightness, increases the torque on the liquid crystal molecules, accelerates the rotation of the liquid crystal molecules, and forces the liquid crystal molecules to move in a shorter time. Change the arrangement inside and convert it into the set penetration rate to achieve the function of accelerating the screen response speed. That is, improving screen response time and reducing motion blur.

In order to implement OD technology, an overdrive lookup table is usually set up in the display driver system. Among them, TVs with DLG (Dual Line Gate: dual line scanning) and Freesync technology only have two OD lookup tables. When the frequency of the input signal is less than 60HZ, the standard overdrive lookup table will be called; when the frequency of the input signal is greater than 60HZ, the DLG overdrive lookup table will be called.

technical problem

However, if the same overdrive lookup table is used for signals of different frequencies, the ratio of the overdrive time to the display time will be inconsistent, resulting in tailing or color trailing.

Therefore, the existing technology still needs to be improved and improved.

Technical solution application

The purpose of this application is to provide an over-driving device, method and display device that can effectively solve the problem of tailing or color trailing caused by using the same over-driving lookup table for signals of different frequencies.

In order to achieve the above purpose, this application adopts the following technical solutions:

The embodiment of the present application provides an over-driving device, including:

The frequency detector is used to find the signal frequency of the next frame of display data in the two adjacent frames of display data from the mapping relationship between the preset frequency and the overdrive lookup table when the signal frequencies of the two adjacent frames of display data are inconsistent. Corresponding preset overdrive lookup table;

An overdrive data generator, connected to the frequency detector, is used to output overdrive data based on two adjacent frames of display data and a preset overdrive lookup table;

The synthesizer is connected to the overdrive data generator and is used to synthesize the overdrive data with the display data of the next frame and then output the display drive data, and the ratio of the display time corresponding to the display drive data to the overdrive time corresponding to the overdrive data is constant. .

In some embodiments of the over-driving device, the over-driving device further includes:

Buffer, connected to the overdrive data generator and synthesizer, used to store two adjacent frames of display data and overdrive data, and output the previous frame display data of the two adjacent frames of display data to the overdrive data generator , output the display data of the next frame and the overdrive data of the two adjacent frames of display data to the synthesizer.

In the overdrive device in some embodiments, the overdrive data generator is specifically used to search for the corresponding overdrive data in the preset overdrive lookup table based on the previous frame display data and the next frame display data, and convert the overdrive data Output to buffer.

In some embodiments the overdrive device, the buffer includes:

The first storage unit is connected to the synthesizer and is used to store the display data of the next frame;

The second storage unit, together with the first storage unit and the overdrive data generator, is used to store the previous frame display data;

The third storage unit is connected to the overdrive data generator and used to store overdrive data.

In some embodiments of the overdrive device, the frequency detector includes:

The control unit is used to compare the signal frequency of the display data in the next frame with the signal frequency of the display data in the previous frame, and to search for and follow the signal frequency when the signal frequency of the display data in the next frame is inconsistent with the signal frequency of the display data in the previous frame. A preset overdrive lookup table corresponding to the signal frequency of one frame of display data.

In the over-driving device in some embodiments, the control unit is also used to control the first storage unit to output the currently stored display data to the second storage unit when the next frame of display data comes.

In some embodiments of the overdrive device, the frequency detector further includes a fourth storage unit connected to the control unit, and the fourth storage unit is used to store the preset mapping relationship between the frequency and the overdrive lookup table and the respective Multiple preset overdrive lookup tables corresponding to multiple different frequencies.

In the overdriving device of some embodiments, the frequency detector is connected to the overdriving data generator through the IIC bus, and outputs the preset overdriving lookup table to the overdriving data generator through the IIC bus.

In some embodiments of the overdriven device, the IIC bus includes the SDA data line and the SCL clock line.

Embodiments of the present application also provide an over-driving method. The over-driving method is applied to an over-driving device. The over-driving device includes a frequency detector, an over-driving data generator and a synthesizer. The over-driving method includes the following steps:

The frequency detector obtains the signal frequency of two adjacent frames of display data, and when the signal frequencies of the two adjacent frames of display data are inconsistent, searches a preset overdrive lookup table corresponding to the signal frequency of the latter frame of display data in the two adjacent frames of display data from a mapping relationship between the preset frequency and the overdrive lookup table;

The past data generator outputs overdrive data based on the display data of two adjacent frames and the preset overdrive lookup table;

The overdrive data and the display data of the next frame are synthesized by the synthesizer to output the display drive data, and the ratio of the display time corresponding to the display drive data and the overdrive time corresponding to the overdrive data is constant.

In the over-driving method in some embodiments, the step of outputting over-driving data based on two adjacent frames of display data and a preset over-driving lookup table specifically includes:

According to the display data of the previous frame and the display data of the next frame in the two adjacent frames of display data, the corresponding over-driving data is searched in the preset over-driving lookup table, and the over-driving data is output to the synthesizer.

An embodiment of the present application also provides a display device, which includes a display screen and an over-driving device. The over-driving device is connected to the display screen; the over-driving device is used to output display driving data to the display screen, so as to Driver display shows.

In the display device in some embodiments, the over-driving device includes a frequency detector, an over-driving data generator and a synthesizer; the frequency detector is used to detect data from a preset frequency when the signal frequencies of two adjacent frames of display data are inconsistent. The preset overdrive lookup table corresponding to the signal frequency of the latter frame of the two adjacent frames of display data is searched in the mapping relationship with the overdrive lookup table; the overdrive data generator is connected to the frequency detector and is used to detect the signal frequency according to the phase. The two adjacent frames of display data and the preset overdrive lookup table output the overdrive data; the synthesizer is connected to the overdrive data generator and is used to synthesize the overdrive data with the display data of the next frame and then output the display drive data, and the display drive data The ratio of the corresponding display time to the overdrive time corresponding to the overdrive data is constant.

In the display device in some embodiments, the over-driving device further includes a buffer, which is connected to the over-driving data generator and the synthesizer, and is used to store two adjacent frames of display data and over-driving data, and combine the adjacent The display data of the previous frame of the two frames of display data is output to the overdrive data generator, and the display data of the next frame of the two adjacent frames of display data and the overdrive data are output to the synthesizer.

In the display device in some embodiments, the overdrive data generator is specifically used to search for the corresponding overdrive data in the preset overdrive lookup table based on the previous frame display data and the next frame display data, and output the overdrive data. to buffer.

In the display device in some embodiments, the buffer includes a first storage unit, a second storage unit and a third storage unit; the first storage unit is connected to the synthesizer and is used to store the display data of the next frame; the second storage unit is The first storage unit and the overdrive data generator are used to store the display data of the previous frame; the third storage unit is connected to the overdrive data generator and is used to store the overdrive data.

In the display device in some embodiments, the frequency detector includes a control unit configured to compare a signal frequency of a subsequent frame of display data with a signal frequency of a previous frame of display data, and display the data in the subsequent frame. When the signal frequency is inconsistent with the signal frequency of the previous frame of display data, search the preset overdrive lookup table corresponding to the signal frequency of the next frame of display data.

In the display device in some embodiments, the control unit is also used to control the first storage unit to output the currently stored display data to the second storage unit when the next frame of display data comes.

In the display device in some embodiments, the frequency detector further includes a fourth storage unit, The fourth storage unit is connected to the control unit, and is used to store a preset mapping relationship between frequencies and overdrive lookup tables and a plurality of preset overdrive lookup tables respectively corresponding to multiple different frequencies.

In the display device in some embodiments, the frequency detector is connected to the overdrive data generator through the IIC bus, and outputs the preset overdrive lookup table to the overdrive data generator through the IIC bus.

beneficial effects

The present application provides an over-driving device, a method and a display device. The over-driving device generates corresponding preset over-driving lookup tables for display data of different frequencies to obtain adaptive over-driving data, thereby satisfying the over-driving time. The ratio to display time is constant. Then, even if the signal frequencies of the two frames of display data are inconsistent, it can still ensure that the ratio of the over-driving time and the display time of the two frames of display data is the same, avoiding the occurrence of tailing or color drag, thereby improving the look and feel of the display. Comfortable and won't cause picture color problems.

Description of the drawings

Figure 1 is a first structural block diagram of the over-driving device provided by this application.

Figure 2 is a second structural block diagram of the over-driving device provided by this application.

Figure 3 is a structural block diagram of the buffer and frequency detector in the overdriving device provided by this application.

Figure 4 is a schematic connection diagram of the frequency detector and the overdrive data generator in the overdrive device provided by this application.

Figure 5 is a step flow chart of the over-driving method provided by this application.

Detailed ways

The purpose of the present application is to provide an overdrive device, method and display device, which can effectively solve the problem of tailing or color dragging caused by using the same overdrive lookup table for signals of different frequencies.

In order to make the purpose, technical solutions and effects of the present application clearer and clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

Please refer to Figure 1. An over-driving device 10 provided by this application includes a frequency detector 11, an over-driving data generator 12 and a synthesizer 13. The frequency detector 11 is connected to the over-driving data generator 12, and the over-driving data is generated The synthesizer 12 is connected to the synthesizer 13.

Among them, the frequency detector 11 is used to find the frequency of the display data of the latter frame in the two adjacent frames of display data from the mapping relationship between the preset frequency and the overdrive lookup table when the signal frequencies of the two adjacent frames of display data are inconsistent. A preset overdrive lookup table corresponding to the signal frequency. The frequency detector 11 stores preset overdrive lookup tables corresponding to different frequencies. The display data of the latter frame in the two adjacent frames of display data is used as the current display data (CDD: Current Display Data in this embodiment). When the frequency detector 11 detects the current display data and the display data of the previous frame (in this embodiment, When the signal frequency of PDD (Previous Display Data) in the middle is inconsistent, then the frequency detector 11 searches the preset overdrive lookup table corresponding to the current display data according to the current display data. The overdrive data generator 12 is used to output overdrive data (ODD: Over Drive Data in this embodiment) based on two adjacent frames of display data and a preset overdrive lookup table. The synthesizer 13 is used to synthesize the over-driving data and the display data of the next frame and then output the display driving data to drive the display screen 20 to display.

The overdrive data in the preset overdrive lookup table corresponding to each signal frequency in this application can ensure that the ratio of the overdrive time of the frame display data to the display data is constant. Correspondingly, the display time corresponding to the display drive data is consistent with the overdrive time. The ratio of the overdrive time corresponding to the drive data is constant. This application generates corresponding preset overdrive lookup tables for display data of different frequencies to obtain adaptive overdrive data, thereby ensuring that the ratio of overdrive time to display time is constant. Then, even if the signal frequencies of the two frames of display data are inconsistent, it can still ensure that the ratio of the overdrive time and the display time of the two frames of display data is the same. This avoids the occurrence of smearing or color smearing, thereby making the display The screen 20 has a comfortable look and feel, and there will be no picture color problems.

In some embodiments, referring to FIG. 2 , the overdrive device 10 further includes a buffer 14, which is connected to the overdrive data generator 12 and the synthesizer 13. The buffer 14 is used to store the previous frame display data and the next frame display data of two adjacent frames of display data and the overdrive data generated by the overdrive data generator 12. After receiving the overdrive data, the buffer 14 outputs the stored next frame display data and the overdrive data to the synthesizer 13 together, so as to obtain the display drive data. The display driving data is display data with overdriving data.

Specifically, if the display data of the next frame is used as the current display data, the frequency detector 11, the overdrive data generator 12 and the buffer 14 will all acquire the display data of the next frame. The frequency detector 11 detects the signal frequency of the current display data, and when the signal frequency of the current display data is inconsistent with the signal frequency of the previous frame display data, searches for a preset overdrive lookup table corresponding to the current display data. The frequency detector 11 outputs the preset overdrive lookup table to the overdrive data generator 12 . The corresponding buffer 14 will output the previous frame display data of the current display data to the overdrive data generator 12, and the overdrive data generator 12 will search in the preset overdrive lookup table based on the current display data and the previous frame display data. The corresponding overdrive data is output to the buffer 14 . The buffer 14 then outputs the current display data and the over-driving data to the synthesizer 13 , and the synthesizer 13 synthesizes the current display data and the over-driving data to output display driving data, thereby driving the display screen 20 to display.

As an embodiment, referring to FIG3 , the buffer 14 includes a first storage unit 141, a second storage unit 142 and a third storage unit 143, wherein the first storage unit 141 is connected to the synthesizer 13, the second storage unit 142 is connected to the first storage unit 141 and the overdrive data generator 12, and the third storage unit 143 is connected to the overdrive data generator 12. In some embodiments, the first storage unit 141 is used to store the next frame display data; the second storage unit 142 is used to store the previous frame display data; and the third storage unit 143 is used to store the overdrive data.

When the buffer 14 receives display data, it will store the received display data into the first storage unit 141. When the next frame of display data arrives, the first storage unit 141 will send the previously stored display data to the second storage unit. 142. The second storage unit 142 will receive and store the display data output by the first storage unit 141, and the first storage unit 141 will receive and store the display data of the next frame. Therefore, the display data stored by the second storage unit 142 and the first frame will be stored. The display data stored in the storage unit 141 constitutes the previous frame display data and the next frame display data of two adjacent frames of display data, wherein the next frame display data stored in the first storage unit 141 is used as the current display data; wherein, each When the next frame of display data arrives, the second storage unit 142 clears the previously stored display data and waits to receive the display data output by the first storage unit 141 . Third storage unit 143 It is used to temporarily store the over-driven data. Whenever the over-driven data is input, the buffer 14 outputs the over-driven data and the next frame display data stored in the first storage unit 141 to the synthesizer 13 in order to obtain Display driver data.

As an embodiment, please continue to refer to Figure 3. The frequency detector 11 includes a control unit 112. The control unit 112 is used to compare the signal frequency of the display data in the next frame with the signal frequency of the display data in the previous frame, and compare the signal frequency of the display data in the next frame. When the signal frequency of one frame of display data is inconsistent with the signal frequency of the previous frame of display data, search for the preset overdrive lookup table corresponding to the signal frequency of the next frame of display data, thereby ensuring that display data of different frequencies can adaptively overdrive. Lookup table to make overdrive time and display time constant. It should be noted that the control unit 112 may use an internally integrated comparator for comparison, or may use an external comparator for comparison, which is not limited in this application.

Among them, the control unit 112 is also used to send instructions to the first storage unit 141 when the next frame of display data arrives, and control the first storage unit 141 to output the currently stored display data to the second storage unit 142, so as to obtain the next frame in time. Display data in one frame.

As another embodiment, the frequency detector 11 further includes a fourth storage unit 111. The fourth storage unit 111 is connected to the control unit 112. The fourth storage unit 111 is used to store a preset mapping relationship between frequency and overdrive lookup table. And multiple preset overdrive lookup tables respectively corresponding to multiple different frequencies, so as to provide corresponding preset overdrive lookup tables when the signal frequency of the display data in the next frame is inconsistent with the signal frequency of the display data in the previous frame.

In some embodiments, please refer to FIG. 4 , the frequency detector 11 is connected to the overdrive data generator 12 through the IIC bus, and outputs the preset overdrive lookup table to the overdrive data generator 12 through the IIC bus. Among them, the IIC bus includes the SDA data line and the SCL clock line. The frequency detector 11 sends the corresponding preset overdrive lookup table found to the overdrive data generator 12 through the SDA data line and the SCL clock line, so as to obtain the corresponding overdrive data.

This application also provides an over-driving method, which is applied to the above-mentioned over-driving device. Please refer to Figure 5. The over-driving method includes the following steps:

100. Obtain the signal frequency of display data in two adjacent frames, and display the signal frequency of data in two adjacent frames. When the signal frequencies are inconsistent, the preset overdrive lookup table corresponding to the signal frequency of the latter frame of the two adjacent frames of display data is searched from the mapping relationship between the preset frequency and the overdrive lookup table;

200. Output overdrive data based on the display data of two adjacent frames and the preset overdrive lookup table;

300. Synthesize the over-driving data with the display data of the next frame and output the display driving data, and the ratio of the display time corresponding to the display driving data and the over-driving time corresponding to the over-driving data is constant.

In the overdrive method of the present application, a corresponding preset overdrive lookup table is generated for display data of different frequencies to obtain adaptive overdrive data, thereby satisfying the constant ratio of overdrive time to display time. Then, even if the signal frequencies of the two frames of display data are inconsistent, it can be ensured that the ratio of the overdrive time to the display time of the two frames of display data is the same, avoiding the generation of tailing or color drag, thereby making the display screen comfortable to look at and will not cause color problems.

This application also provides a display device. The display device includes a display screen and the above-mentioned over-driving device. The over-driving device is connected to the display screen; the over-driving device is used to output display driving data to the display screen to drive the display screen to display. The overdrive device is described in detail above and will not be described again here.

To sum up, the present application provides an over-driving device, method and display device, wherein the over-driving device includes a frequency detector for detecting the difference between the preset frequency and the over-driving signal when the signal frequencies of two adjacent frames of display data are inconsistent. In the mapping relationship of the drive lookup table, search for a preset overdrive lookup table corresponding to the signal frequency of the latter frame of the two adjacent frames of display data; the overdrive data generator is connected to the frequency detector and is used to determine the adjacent The two frames of display data and the preset overdrive lookup table output the overdrive data; the synthesizer is connected to the overdrive data generator and is used to synthesize the overdrive data with the display data of the next frame and then output the display drive data, and the display drive data The ratio of the corresponding display time to the overdrive time corresponding to the overdrive data is constant; this application adaptively generates overdrive data based on display data of different frequencies, making the overdrive time and display time constant, thus avoiding the occurrence of tailing or color trailing. .

It can be understood that, for those of ordinary skill in the art, equivalent substitutions or changes can be made based on the technical solution of the present application and its application concept, and all such changes or substitutions shall belong to protection scope of the claims appended to this application.

Claims

An over-driving device, which includes:

A frequency detector, used to find the frequency of the display data of the latter frame in the two adjacent frames of display data from the mapping relationship between the preset frequency and the overdrive lookup table when the signal frequencies of the two adjacent frames of display data are inconsistent. Preset overdrive lookup table corresponding to signal frequency;

An overdrive data generator, connected to the frequency detector, used to output overdrive data according to the two adjacent frames of display data and the preset overdrive lookup table;

a synthesizer, connected to the overdrive data generator, for synthesizing the overdrive data and the subsequent frame display data and outputting display drive data, and the display time corresponding to the display drive data is the same as the overdrive data. The ratio of the overdrive time corresponding to the drive data is constant.
The overdrive device according to claim 1, wherein the overdrive device further includes:

A buffer, connected to the overdrive data generator and the synthesizer, is used to store the two adjacent frames of display data and the overdrive data, and to store the previous two adjacent frames of display data. The frame display data is output to the overdrive data generator, and the display data of the next frame of the two adjacent frames of display data and the overdrive data are output to the synthesizer.
The overdrive device according to claim 2, wherein the overdrive data generator is specifically configured to search in the preset overdrive lookup table according to the previous frame display data and the next frame display data. corresponding to the over-driven data, and output the over-driven data to the buffer.
The overdrive device of claim 2, wherein the buffer includes:

A first storage unit, connected to the synthesizer, used to store the display data of the next frame;

a second storage unit, together with the first storage unit and the overdrive data generator, used to store the previous frame display data;

A third storage unit is connected to the overdrive data generator and used to store the overdrive data.
The overdrive device of claim 4, wherein the frequency detector includes:

A control unit configured to compare the signal frequency of the display data of the next frame with the display data of the previous frame. The signal frequency of the data is compared, and when the signal frequency of the subsequent frame display data is inconsistent with the signal frequency of the previous frame display data, a preset overdrive corresponding to the signal frequency of the subsequent frame display data is searched. Lookup table.
The overdriving device according to claim 5, wherein the control unit is further configured to control the first storage unit to output the currently stored display data to the second storage unit when the next frame of display data comes.
The overdrive device according to claim 5, wherein the frequency detector further includes a fourth storage unit, the fourth storage unit is connected to the control unit, the fourth storage unit is used to store the preset frequency and overdrive The mapping relationship of the lookup table and multiple preset overdrive lookup tables respectively corresponding to multiple different frequencies.
The overdrive device according to claim 7, wherein the frequency detector is connected to the overdrive data generator through an IIC bus, and outputs the preset overdrive lookup table to the overdrive lookup table through the IIC bus. Overdrive data generator.
The overdrive device of claim 7, wherein the IIC bus includes an SDA data line and an SCL clock line.
An over-driving method, wherein the over-driving method is applied in an over-driving device, the over-driving device includes a frequency detector, an over-driving data generator and a synthesizer, and the over-driving method includes the following steps:

The frequency detector obtains the signal frequency of two adjacent frames of display data, and when the signal frequencies of the two adjacent frames of display data are inconsistent, it searches for the corresponding frequency from the mapping relationship between the preset frequency and the overdrive lookup table. A preset overdrive lookup table corresponding to the signal frequency of the latter frame of display data in the two adjacent frames of display data;

The past data generator outputs overdrive data according to the two adjacent frames of display data and the preset overdrive lookup table;

The synthesizer synthesizes the over-driving data and the display data of the next frame and outputs display driving data, and the ratio of the display time corresponding to the display driving data and the over-driving time corresponding to the over-driving data is constant. .
The overdriving method according to claim 10, wherein the step of outputting overdriving data according to the two adjacent frames of display data and the preset overdriving lookup table specifically includes:

According to the display data of the previous frame and the display data of the next frame in the two adjacent frames of display data, the corresponding overdrive data is searched in the preset overdrive lookup table, and the overdrive data is output. to the synthesizer.
A display device, which includes a display screen and an over-driving device, the over-driving device is connected to the display screen; the over-driving device is used to output display driving data to the display screen to drive the display screen show.
The display device according to claim 12, wherein the overdriving device comprises:

A frequency detector, used to find the frequency of the display data of the latter frame in the two adjacent frames of display data from the mapping relationship between the preset frequency and the overdrive lookup table when the signal frequencies of the two adjacent frames of display data are inconsistent. Preset overdrive lookup table corresponding to signal frequency;

An overdrive data generator, connected to the frequency detector, used to output overdrive data according to the two adjacent frames of display data and the preset overdrive lookup table;

a synthesizer, connected to the overdrive data generator, for synthesizing the overdrive data and the subsequent frame display data and outputting display drive data, and the display time corresponding to the display drive data is the same as the overdrive data. The ratio of the overdrive time corresponding to the drive data is constant.
The display device according to claim 13, wherein the over-driving device further comprises:

A buffer, connected to the overdrive data generator and the synthesizer, is used to store the two adjacent frames of display data and the overdrive data, and to store the previous two adjacent frames of display data. The frame display data is output to the overdrive data generator, and the display data of the next frame of the two adjacent frames of display data and the overdrive data are output to the synthesizer.
The display device according to claim 14, wherein the overdrive data generator is specifically used to search for the corresponding overdrive data in the preset overdrive lookup table according to the previous frame display data and the next frame display data, and output the overdrive data to the buffer.
The display device of claim 14, wherein the buffer includes:

A first storage unit, connected to the synthesizer, used to store the display data of the next frame;

a second storage unit, together with the first storage unit and the overdrive data generator, used to store the previous frame display data;

A third storage unit is connected to the overdrive data generator and used to store the overdrive data.
The display device of claim 16, wherein the frequency detector includes:

A control unit configured to compare the signal frequency of the subsequent frame of display data with the signal frequency of the previous frame of display data, and compare the signal frequency of the subsequent frame of display data with the signal frequency of the previous frame of display data. When the signal frequencies are inconsistent, a preset overdrive lookup table corresponding to the signal frequency of the subsequent frame display data is searched.
The display device according to claim 17, wherein the control unit is further configured to control the first storage unit to output the currently stored display data to the second storage unit when the next frame of display data comes.
The display device according to claim 17, wherein the frequency detector further includes a fourth storage unit, the fourth storage unit is connected to the control unit, and the fourth storage unit is used to store a preset frequency and an overdrive search. The mapping relationship of the table and multiple preset overdrive lookup tables respectively corresponding to multiple different frequencies.
The display device according to claim 19, wherein the frequency detector is connected to the overdrive data generator through an IIC bus, and outputs the preset overdrive lookup table to the overdrive data generator through the IIC bus. drive data generator.