TWI615036B - Display method and display device for reducing motion blur in video - Google Patents

Abstract

A display method for improving image motion blur, comprising the following steps. Receiving an image signal, the image signal includes a plurality of image frames. Displaying a plurality of image frames in a plurality of frame intervals in a display panel, each frame interval includes a vertical blanking interval and a data scanning interval. Providing a backlight enable signal for controlling the backlight unit of the display panel to be turned on or off in each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is in the first enablement The period of the pulse is turned on.

Description

Display method and display device for improving image dynamic blur

The present disclosure relates to a display method and apparatus, and more particularly to a display method and apparatus for improving image motion blur.

A liquid crystal display (LCD) is a commonly used display screen, and a liquid crystal display is a hold type display device, that is, for each pixel, the pixel intensity value is maintained until the next one. The image frame is updated to the new intensity value. Due to this feature, when a continuous image frame is displayed, the moving object in the image remains static in an image frame, thereby causing motion blur to the human eye and reducing image quality. May cause discomfort. Therefore, how to improve the image blurring phenomenon of such a display device is one of the current topics in the industry.

According to an aspect of the present invention, a display method for improving image motion blur is provided, which includes the following steps. Receiving an image signal, the image signal includes a plurality of image frames. Displaying multiple image frames on the display panel sequentially in multiple frame intervals. Each frame interval includes a vertical blanking interval and a data scanning interval. Providing a backlight enable signal for controlling the backlight unit of the display panel to be turned on or off in each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is in the first enablement The period of the pulse is turned on.

According to another aspect of the present invention, a display device for improving image motion blur is proposed. The display device includes a display panel, a backlight unit, a display driving circuit, and a backlight control circuit. The display driving circuit is configured to receive the image signal, and the image signal comprises a plurality of image frames, and the display driving circuit drives the display panel to display the plurality of image frames in sequence, wherein each frame interval includes a vertical blanking interval and Data scan interval. The backlight control circuit is configured to provide a backlight enable signal to control the backlight unit to be turned on or off. In each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is turned on during the first enable pulse.

2‧‧‧Display device

200‧‧‧ display panel

202‧‧‧Backlight unit

204‧‧‧Display drive circuit

206‧‧‧Backlight control circuit

P1‧‧‧First enabling pulse

P2‧‧‧Secondary Pulse

P3‧‧‧ third enabling pulse

Pv‧‧‧masking enable pulse

D1, d2, d3, d4‧‧‧ delay interval

T1, t2‧‧‧ start time of the first enable pulse P1

S100‧‧‧ Receive image signals including multiple video frames

S102‧‧‧ Display multiple image frames on the display panel in multiple frame intervals, each frame interval includes vertical blanking interval and data scanning interval

S104‧‧‧ providing a backlight enable signal for controlling the backlight unit of the display panel to be turned on or off in each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is The period of the first consistent pulse is turned on

FIG. 1 is a flow chart showing a display method according to an embodiment of the invention.

2 is a block diagram of a display device in accordance with an embodiment of the present invention.

FIG. 3A is a schematic diagram of signal timing according to an embodiment of the invention.

FIG. 3B is a schematic diagram of signal timing according to an embodiment of the invention.

FIG. 4 is a schematic diagram of generating a backlight enable signal according to a vertical synchronization signal according to an embodiment of the invention.

FIG. 5 is a diagram showing a first enable pulse in a plurality of video signals according to an embodiment of the invention. Schematic diagram of the delay interval in the box.

FIG. 6 is a schematic diagram showing changes in the delay interval of the first enable pulse according to various embodiments of the present invention.

7A, 7B, and 7C are schematic diagrams showing a backlight enable signal including a plurality of enable pulses according to an embodiment of the invention.

FIG. 8 is a schematic diagram of a backlight enable signal including a blanking enable pulse according to an embodiment of the invention.

FIG. 9 is a schematic diagram of adjusting a vertical blanking interval according to an embodiment of the invention.

A general transmissive liquid crystal display includes a display panel and a backlight unit. The backlight unit includes a light source to illuminate a display panel in front of the light source, such as a light-emitting diode (LED) or a cold cathode fluorescent light. Cold Cathode Fluorescent Lamps (CCFL). By controlling the opening or closing operation of the backlight unit, for example, controlling whether the backlight unit is turned on at a frequency higher than the human eye can perceive, so that the liquid crystal pixel is not maintained in the illuminated state during the complete image frame, thereby effectively slowing down the dynamics. Blurred phenomenon.

The display method and the display device proposed by the present invention are described below. Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 1 is a flow chart showing a display method according to an embodiment of the present invention, and FIG. 2 is a view showing an embodiment of the present invention. An example block diagram of the display device. The method for improving the image blurring as shown in FIG. 1 includes the following steps. Step S100: Receive an image signal, where the image signal includes a plurality of image frames. step Step S102: Display a plurality of image frames on the display panel in a plurality of frame intervals, wherein each frame interval includes a Vertical Blanking Interval (VBI) and a data scanning interval. Step S104: providing a backlight enable signal for controlling the backlight unit of the display panel to be turned on or off in each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is in the first The period of the consistent energy pulse is turned on.

The display device 2 as shown in FIG. 2 includes a display panel 200, a backlight unit 202, a display drive circuit 204, and a backlight control circuit 206. The display driving circuit 204 is configured to receive the image signal (step S100), and the image signal includes a plurality of image frames, and the display driving circuit 204 drives the display panel 200 to display the plurality of image frames in sequence according to the plurality of frame intervals (step S102). Each frame interval includes a vertical blanking interval and a data scanning interval. The backlight control circuit 206 is configured to provide a backlight enable signal to control the backlight unit 202 to be turned on or off. In each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit 202 is turned on during the first enable pulse (step S104).

As shown in FIG. 2, the display driving circuit 204 is configured to drive the display panel 200 to display image data, and the backlight control circuit 206 is configured to control the time point when the backlight unit 202 is turned on to determine when to turn on or off the light source. In an embodiment, backlight control circuit 206 can receive associated control signals from display drive circuit 204 to determine the control timing of backlight unit 202.

The signal timing diagrams shown in FIGS. 3A and 3B are further described below to clearly illustrate the above display method and display device. Sequentially in multiple frame areas A plurality of image frames are displayed on the display panel 200. The plurality of frame intervals include, for example, the first image frame and the second image frame illustrated in FIG. 3A, wherein each frame interval includes a vertical blanking interval ( VBI) and data scanning interval. As shown in the panel scan signal timing diagram of FIG. 3, the display panel 200 does not receive the drive data in the vertical blanking interval, and the data scan interval display drive circuit 204 can sequentially display the display image data to the display in a row-by-row manner. For the panel 200, for example, for the display panel 200 having N columns, the first column Row 1, the second column Row 2, the N-1 column Row N-1, and the Nth row Row N are sequentially driven in the data scanning interval.

The backlight enable signal provided by the backlight control circuit 206 includes a first enable pulse P1 during which the period of the first enable pulse P1 is located in the data scan interval and the backlight unit 202 is turned on during the first enable pulse P1. In the embodiment illustrated in FIG. 3A, in each frame interval, the start time of the first enable pulse P1 is the same, and the start time of the first enable pulse is, for example, the leading edge of the first enable pulse. Time point. That is, when each image frame is displayed, the backlight unit 202 is turned on at a fixed time, and the time when the backlight unit 202 is turned on is fixed after the end of the vertical blanking interval. In addition, the backlight control circuit 206 can also be used to adjust the length of the first enable pulse P1. Under the same backlight intensity, the longer first enable pulse P1 can provide better display picture brightness.

FIG. 3B is a schematic diagram of signal timing according to an embodiment of the present invention. In this embodiment, the image displayed by the display panel 200 includes a plurality of image frames, wherein the plurality of image frames include the succeeding first image frame. And the second image frame, the time point when the backlight unit 202 is turned on, the succeeding first image frame and the second image The start time of the first enable pulse P1 is different in the first image frame and in the second image frame.

As shown in FIG. 3B, the start time of the first enable pulse P1 in the first image frame is t1, and the start time of the first enable pulse P1 in the second image frame is t2, where t1 and t2 are not equal. In the succeeding first image frame and the second image frame, the time when the backlight unit 202 is turned on corresponds to the scanning time of different columns of the display panel 200, so that the dynamic blurring situation can be effectively dispersed in different positions in the screen, thereby improving Image quality. Similarly, the backlight control circuit 206 can also be used to adjust the length of time of the first enable pulse P1.

In the embodiment shown in FIG. 3B, the backlight unit is turned on in the data scanning interval, and by changing the turn-on time of the backlight unit in the connected image frame, it is possible to prevent the phenomenon of dynamic blurring from being fixed in the screen. The position is equivalent to dispersing the effect of dynamic blurring in different positions of the image frame in different image frames, thereby reducing the discomfort of the human eye to view the image and improving the dynamic blurring situation.

In addition, since the backlight unit is not kept open throughout the frame interval, the brightness of the screen may be affected, and in the frame interval, the length of the vertical blanking interval is much shorter than the length of the data scanning interval, and the present invention Since the backlight unit is turned on in the data scanning interval, the backlight unit can be turned on for a long enough time to improve the brightness of the screen without greatly increasing the illumination intensity of the backlight unit, and the production cost of the backlight unit can be reduced.

For some liquid crystal display drive circuits, related control signals A vertical sync (Vsync) signal may also be included, the vertical sync signal including a vertical sync pulse in the vertical blanking interval to control the display signal drive timing. In an embodiment, the backlight enable signal can be generated in accordance with the vertical sync pulse.

FIG. 4 is a schematic diagram of generating a backlight enable signal according to a vertical synchronization signal according to an embodiment of the invention. The display driving circuit 204 can be used to provide a vertical synchronizing signal. As shown in FIG. 4, the vertical synchronizing signal includes a vertical synchronizing pulse in the vertical blanking interval, and the backlight control circuit 206 can generate a backlight enable signal according to the vertical synchronizing pulse. In this way, the timing of the backlight enable signal can be determined according to the vertical sync pulse, and relatively synchronous with the vertical blanking interval, the backlight unit 202 can be effectively controlled in the data scanning interval, and the continuous control of the image frame can be effectively controlled at different times. The backlight unit 202 is turned on.

There are a number of implementations for generating a backlight enable signal based on a vertical sync pulse. A possible embodiment is provided below. FIG. 5 is a schematic diagram showing a delay interval of a first enable pulse in a plurality of video frames according to an embodiment of the invention. In this embodiment, the backlight control circuit 206 can delay the vertical sync pulse by a time interval to generate a scan vertical. Synchronization (Scanning Vsync) pulse, this time interval is different in the length of the different video frames, so that the scanning vertical sync pulse starts at different times in the connected video frame. Then, the backlight control circuit 206 can increase the time for scanning the vertical sync pulse, that is, increase the width of the pulse to generate the first enable pulse P1, which is due to the length of time of the vertical sync pulse in the general liquid crystal display, in one image. The backlight turn-on time required for the frame may be longer, so this step of increasing the pulse width may be included. The method steps of generating a backlight enable signal of this embodiment are only For illustrative purposes, the invention is not limited to this embodiment.

As shown in FIG. 5, in each frame section, the delay intervals d1, d2, d3, and d4 between the start time of the first enable pulse P1 and the end time of the vertical blanking interval are different. In an embodiment, the delay intervals d1, d2, d3, and d4 are periodic changes, for example, periodic changes such as d1->d2->d3->d4->d1->d2->d3->d4 This simplifies the software or hardware design of the backlight control circuit 206. It should be noted that in FIG. 5, in order to simplify the illustration, only four kinds of delay intervals are shown in one cycle to clearly indicate the situation of periodic changes. In practice, a cycle may include a greater variety of delay intervals. For example, if the frame period Per Second (FPS) is 30 frames per second with a period of one second as the delay interval, 30 frames form one cycle and one cycle. It can include 30 different delay intervals (d1~d30). If the resolution of the display panel is 1920x1080 (with 1080 columns), the width of the first enable pulse P1 can be approximately corresponding to 1080/30=36 columns. Data scan time. The cycle length, frame rate, and panel resolution are only illustrative examples, and can be adjusted according to design requirements and practical applications.

As shown in FIG. 5, the delay intervals d1, d2, d3, and d4 of the first enable pulse P1 may be varied in various embodiments. FIG. 6 illustrates a first enable pulse according to various embodiments of the present invention. Schematic diagram of the change of the P1 delay interval, and different embodiments are illustrated in FIG. 6 with the backlight enable signal a~the backlight enable signal e, respectively. As mentioned above, in order to simplify the illustration, each of the backlight enable signals a~e in FIG. 6 only shows four different delay intervals d1~d4, and in practice may include more or less. Different delay intervals. Further, in the following FIG. 6, different delay intervals are exemplified by d1 < d2 < d3 < d4, where d1 may be 0.

The backlight enable signal a: the delay interval is a periodic change, and the delay interval is a periodic increase. For example, the periodic variation of the delay interval is d1->d2->d3->d4->d1->d2->d3->. In this example, the time when the backlight unit 202 is turned on in different image frames corresponds to the column scanning time of the display panel 200 from the top end to the bottom end, and then reaches the bottom end and then returns to the top end. In this way, the change of the backlight on is regular, and the time of the backlight on most of the successive image frames does not change much.

The backlight enable signal b: the delay interval is a periodic change, and the delay interval is a periodic decrease. For example, the periodic variation of the delay interval is d4->d3->d2->d1->d4->d3->d2->. In this example, the time when the backlight unit 202 is turned on in different image frames corresponds to the column scanning time of the display panel 200 from the bottom end to the top end, and then reaches the top end and then returns to the bottom end.

The backlight enable signal c: the delay interval is a periodic change, and the delay interval is a periodic alternating increment and decrement. For example, the periodic variation of the delay interval is d1->d2->d3->d4->d3->d2->d1->d2->d3.... In this way, the change of the backlight on is regular, and for all the successive video frames, the time of the backlight turn-on is not large, which is corresponding to the adjacent column scan time, which can effectively reduce the viewing time. The picture flickers.

The backlight enable signal d: the delay interval is smaller than the lower bound LB or greater than the upper bound UB, wherein the lower bound LB is smaller than the upper bound UB, for example, d1 < LB, d2 < LB, d3 > UB, D4>UB, the delay interval may be a periodic change or a non-periodic change. In this example, when the backlight unit 202 is turned on, it corresponds to the column scanning time of the display panel 200 near the top end, or the column scanning time of the display panel 200 near the bottom end. In this way, the dynamic blurring phenomenon can be limited to a position close to the top or bottom of the display panel 200, regardless of whether the liquid crystal display device is applied to a television, a computer screen, or a mobile phone screen, which is a field of view that the user pays less attention to. Therefore, dynamic blurring is more likely to occur, and the situation near the center of the image frame can effectively improve the dynamic blur.

The backlight enable signal e: the delay interval is a random change, that is, the delay interval between the start time of the first enable pulse and the end time of the vertical blanking interval is not changed according to a specific rule. In this way, the dynamic blurring phenomenon can be randomly dispersed in different positions in the picture.

As shown in FIG. 6 , by changing the delay interval of the backlight turn-on time, the dynamic blur phenomenon can be effectively dispersed at different positions in the picture, which is equivalent to dispersing the degree of dynamic blur on the screen evenly. The severity of dynamic blurring, or the limitation of dynamic blurring to a specific field of view. This enables the user to feel a slight dynamic blur when viewing.

In the method of using the dynamic adjustment control backlight turn-on time, in order to further enhance the picture brightness, the backlight enable signal may further include a plurality of enable pulses. 7A, 7B, and 7C are schematic diagrams showing a backlight enable signal including a plurality of enable pulses according to an embodiment of the invention. As shown in FIG. 7A, in each frame interval, the backlight enable signal further includes a second enable pulse P2, and a second enable pulse Both the P2 and the first enable pulse P1 are located in the data scanning interval, and the backlight unit 202 is turned on during the first enable pulse P1 and the second enable pulse P2, and the start time of the second enable pulse P2 (for example, a pulse) The leading edge is close to and later than the end time of the first enable pulse P1 (eg, trailing edge).

In another embodiment, as shown in FIG. 7B, in each frame interval, the backlight enable signal includes a first enable pulse P1, a second enable pulse P2, and a third enable pulse P3. The third enable pulse P3 is also located in the data scanning interval, and the backlight unit 202 is turned on during the first enable pulse P1, the second enable pulse P2, and the third enable pulse P3, and the third enable pulse P3 The start time is close to and later than the end time of the second enable pulse P2.

In another embodiment, as shown in FIG. 7C, the backlight enable signal may include a first enable pulse P1, a second enable pulse P2, and a third enabler, similar to the embodiment shown in FIG. 7B. Pulse P3, and in the embodiment shown in Fig. 7C, the first enable pulse P1 is the same at the start time of each frame interval. In the embodiments shown in FIGS. 7A, 7B, and 7C, the brightness of the screen can be effectively enhanced by using a plurality of enable pulses in the data scanning interval. For the plurality of enable pulses of the implementation mode, the start time of each frame interval may be the same, or the delay interval of the first enable pulse P1 may be adjusted in each frame interval, as shown in FIG. The various embodiments are illustrated and will not be further described herein.

In an embodiment, the backlight unit 202 can also be turned on in the vertical blanking interval. FIG. 8 is a schematic diagram of a backlight enable signal including a blanking enable pulse according to an embodiment of the invention. In each frame interval, backlight The enable signal further includes a blanking enable pulse Pv, the blanking enable pulse Pv is located in the vertical blanking interval, and the backlight unit 202 is turned on during the blanking of the enable pulse Pv. In this embodiment, the backlight unit is turned on by using the vertical blanking interval and the data scanning interval to enhance the brightness of the screen. For this implementation mode (turning on the backlight unit in the vertical blanking interval), more than one enabling pulse may be included in the data scanning interval, as shown in FIG. 7A and FIG. 7B, and details are not described herein again.

In order to improve the brightness of the screen, in an embodiment, the display driving circuit 204 can further adjust the ratio of the vertical blanking interval to the data scanning interval in each frame interval. For example, in the fixed frame interval time length, the length of the vertical blanking interval may be increased, that is, the time length of the data scanning interval may be relatively reduced. For example, reference may be made to FIG. 9 , which illustrates an implementation according to the present invention. Example of adjusting a vertical blanking interval according to an embodiment of the present invention. Compared with the example shown in FIG. 3 to FIG. 8 , the ratio of the vertical blanking interval to the data scanning interval is larger in FIG. 9 , so that the length of the first enabling pulse P1 is maintained and the third time. The same as shown in Fig. 8 can also make the time when the backlight is turned on in the data scanning interval becomes larger, so that the brightness of the screen can be improved.

It should be noted that the ratio of the vertical blanking interval to the data scanning interval as shown in Figures 3 to 9 may be different from the ratio in the actual implementation. For example, Figure 9 shows the vertical blanking interval and data scanning. The lengths of the intervals are similar so that the illustrations can clearly illustrate the method of this embodiment, and the ratio in practice is adjusted depending on panel characteristics and design requirements. For example, in the embodiment of FIG. 3, the ratio of the vertical blanking interval to the data scanning interval may be 2%, and in the embodiment of FIG. 9, The ratio of the vertical blanking interval to the data scanning interval may be 20%.

In the embodiment shown in FIG. 9 (adjusting the vertical obscuration interval time length), the start time of the first enable pulse P1 is the same in each frame interval, and may be modified to adjust the backlight turn-on time in practice. Delay interval (as shown in Figure 6). In addition, more than one enable pulse may be included in the data scan interval (as shown in FIGS. 7A and 7B), or the backlight unit 202 may be turned on in the vertical blanking interval (as shown in FIG. 8). The method has been explained in the foregoing, and will not be described here. The practices of these embodiments are all optional and do not conflict with each other and can be used simultaneously.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

S100‧‧‧ Receive image signals including multiple video frames

S102‧‧‧ Display multiple image frames on the display panel in multiple frame intervals, each frame interval includes vertical blanking interval and data scanning interval

S104‧‧‧ providing a backlight enable signal for controlling the backlight unit of the display panel to be turned on or off in each frame interval, the backlight enable signal includes a first enable pulse, the first enable pulse is located in the data scan interval, and the backlight unit is The period of the first consistent pulse is turned on

Claims (22)

A display method for improving image motion blur, comprising: receiving an image signal, the image signal comprising a plurality of image frames; displaying the plurality of image frames in a display panel in sequence, each frame The interval includes a vertical blanking interval and a data scanning interval; a backlight enabling signal is provided in each of the frame intervals for controlling a backlight unit of the display panel to be turned on or off, and the backlight enabling signal includes a first enabling a pulse, the first enabling pulse is located in the data scanning interval, the backlight unit is turned on during the first enabling pulse; receiving a vertical synchronization signal, the vertical synchronization signal including a vertical synchronization in the vertical blanking interval Pulses; and generating the backlight enable signal in accordance with the vertical sync pulse. The display method of claim 1, wherein the step of generating the backlight enable signal according to the vertical sync pulse comprises: delaying the vertical sync pulse by a time interval to generate a scan vertical sync pulse; and increasing the scan The time of the vertical sync pulse is generated to generate the first enable pulse. The display method of claim 1, wherein the start time of the first enable pulse is the same in each of the frame intervals. The display method of claim 1, wherein the plurality of image frames comprise a first image frame and a second image frame, in the first image frame and in the second In the image frame, at the beginning of the first enable pulse Not the same. The display method of claim 4, wherein in each of the frame intervals, a delay interval between a start time of the first enable pulse and an end time of the vertical blank interval is a periodic change . The display method of claim 5, wherein the delay interval is periodically incremented in each of the frame intervals. The display method of claim 5, wherein in each of the frame intervals, the delay interval is a periodic alternating increment and decrement. The display method of claim 1, wherein in each of the frame intervals, a delay interval between a start time of the first enable pulse and an end time of the vertical blank interval is less than The boundary is greater than an upper bound, wherein the lower bound is smaller than the upper bound. The display method of claim 1, wherein in each of the frame intervals, the backlight enable signal further comprises a second enable pulse, the second enable pulse is located in the data scanning interval, the backlight The cell is turned on during the second enable pulse, the start time of the second enable pulse is close to and later than the end time of the first enable pulse, the first enable pulse and the second enable pulse bit In the same data scanning area. The display method of claim 1, wherein in each of the frame intervals, the backlight enable signal further comprises a blanking enable pulse, wherein the blanking enable pulse is located in the vertical blanking interval, The backlight unit is turned on during the blanking enable pulse. A display method for improving image motion blur, comprising: receiving an image signal, the image signal comprising a plurality of image frames; displaying the plurality of image frames in a display panel in sequence, each frame The interval includes a vertical blanking interval and a data scanning interval; a backlight enabling signal is provided in each of the frame intervals for controlling a backlight unit of the display panel to be turned on or off, and the backlight enabling signal includes a first enabling a pulse, the first enable pulse is located in the data scanning interval, the backlight unit is turned on during the first enable pulse; and adjusting the vertical blanking interval in the frame interval relative to the data scanning interval A ratio is such that the length of time of the vertical blanking interval is increased in a fixed length of each frame interval, and the length of time of the data scanning interval is reduced. A display device for improving image motion blur, comprising: a display panel; a backlight unit; a display driving circuit for receiving an image signal, the image signal comprising a plurality of image frames, and the display driving circuit is sequentially in plurality The frame area drives the display panel to display the plurality of image frames, each frame interval includes a vertical blanking interval and a data scanning interval, and the display driving circuit is further configured to provide a vertical synchronization signal, the vertical synchronization signal Include a vertical sync pulse in the vertical blanking interval; and a backlight control circuit for providing a backlight enable signal to control the backlight Turning on or off, wherein the backlight enable signal includes a first enable pulse in the frame interval, the first enable pulse is located in the data scan interval, and the backlight unit is in the first enable pulse The backlight control circuit generates the backlight enable signal according to the vertical sync pulse. The display device of claim 12, wherein the backlight control circuit is configured to delay the vertical sync pulse by a time interval to generate a scan vertical sync pulse, and the backlight control circuit is configured to increase the scan vertical sync pulse. Time to generate the first enable pulse. The display device of claim 12, wherein the start time of the first enable pulse is the same in each of the frame intervals. The display device of claim 12, wherein the plurality of image frames comprise a first image frame and a second image frame, in the first image frame and in the second In the video frame, the start time of the first enable pulse is different. The display device of claim 12, wherein in each of the frame intervals, a delay interval between a start time of the first enable pulse and an end time of the vertical blank interval is a periodic change . The display device of claim 16, wherein the delay interval is periodically incremented in each of the frame intervals. The display device of claim 16, wherein in each of the frame intervals, the delay interval is a periodic alternating increment and decrement. The display device of claim 12, wherein in each of the frame intervals, a delay interval between a start time of the first enable pulse and an end time of the vertical blank interval is less than The boundary is greater than an upper bound, wherein the lower bound is smaller than the upper bound. The display device of claim 12, wherein in each of the frame intervals, the backlight enable signal further comprises a second enable pulse, the second enable pulse is located in the data scanning interval, the backlight The cell is turned on during the second enable pulse, the start time of the second enable pulse is close to and later than the end time of the first enable pulse, the first enable pulse and the second enable pulse bit In the same data scanning area. The display device of claim 12, wherein in each of the frame intervals, the backlight enable signal further comprises a blanking enable pulse, wherein the blanking enable pulse is located in the vertical blanking interval, The backlight unit is turned on during the blanking enable pulse. A display device for improving image motion blur, comprising: a display panel; a backlight unit; a display driving circuit for receiving an image signal, the image signal comprising a plurality of image frames, and the display driving circuit is sequentially in plurality The frame interval driving the display panel displays the plurality of image frames, each of the frame intervals includes a vertical blanking interval and a data scanning interval, and a backlight control circuit for providing a backlight enable signal to control the Backlight Turning on or off, wherein the backlight enable signal includes a first enable pulse in the frame interval, the first enable pulse is located in the data scan interval, and the backlight unit is in the first enable pulse The display driving circuit is further configured to adjust a ratio of the vertical blanking interval to the data scanning interval in each of the frame intervals to increase in a fixed length of each of the frame intervals. The vertical obscures the length of the interval and reduces the length of time of the data scan interval.