WO2015074384A1

WO2015074384A1 - Shutter-type three-dimensional image display method, apparatus and system

Info

Publication number: WO2015074384A1
Application number: PCT/CN2014/076854
Authority: WO
Inventors: 孙志华; 张亮; 许益祯; 刘宝玉; 汪建明; 吴行吉
Original assignee: 京东方科技集团股份有限公司; 北京京东方显示技术有限公司
Priority date: 2013-11-19
Filing date: 2014-05-06
Publication date: 2015-05-28
Also published as: CN103607583A

Abstract

Disclosed are a shutter-type three-dimensional (3D) image display method, an apparatus and a system. In the display method provided by embodiments of the present invention, because a black screen frame image signal is displayed before a next single-eye frame image signal is displayed, a frame of black screen is inserted between single frame images for left and right eyes, which can eliminate a double image of the single frame images for the left and right eyes and alleviate a problem of a crosstalk problem of a 3D image. In addition, because display time of the black screen frame image signal is less than display time of a single-eye frame image signal, a required refresh frequency of a display apparatus is relatively lower, thus ensuring sufficient charging time for a pixel electrode in the display apparatus and improving quality of a display screen. In addition, because a product yield of the display apparatus with a low refresh frequency is high, costs of a 3D display product can be reduced.

Description

Fast η type three-dimensional image display method, device and system

The present invention relates to the field of three-dimensional display technologies, and in particular, to a shutter-type three-dimensional image display method, device and system.

With the development of display technology, three-dimensional (3D) stereoscopic display technology has become one of the important technologies of display devices. The active shutter type 3D display technology is a 3D display method with low cost, which realizes the three-dimensional effect by increasing the refresh rate of the screen, and cooperates with the fast switching of the 3D warm mirror, so that the viewer can view the double heel The left and right eye images form the effect of the stereoscopic image.

Although the existing moving shutter type 3D display method can display a 3D image, due to the visual retention effect, when the human eye views a mechanical image, the image of another frame is simultaneously seen, for example, when viewing the left (right) limited image. When there is a crosstalk of the right (left) eye to the left (right) limit, the problem of left and right image crosstalk and 3D image blurring is seriously affected, which seriously affects the 3D viewing effect.

At present, the black frame method is generally used to solve the crosstalk problem of the above 3D image. The black-and-black method mainly performs double-frequency processing on the left and right eye image signals, so that the refresh frequency of the left and right eye image signals is increased from i20HZ to 240ΗΖ. And insert a frame of black screen image signal between the left and right eye image signals. Although the method can improve the crosstalk problem of the 3D image, the method needs to increase the refresh frequency of the left and right warm image signals from 120 Hz to 240 Hz, and accordingly, the driving frequency of the display device driving circuit needs to be increased from 120 Hz to 240 Hz. In this way, the charging time of each pixel electrode is relatively reduced by half, resulting in insufficient charging of the pixel electrode, thereby affecting the display screen; and, the product yield of the display device with high refresh rate is not high, which may cause an increase in the cost of the product.

A shutter type three-dimensional image display method, device and system provided by the embodiments of the present invention can improve the three-dimensional image crosstalk problem on the premise that the display device has a lower refresh frequency.

A shutter type three-dimensional image display method provided by the embodiment of the invention includes:

Receiving a current monocular frame image signal to be displayed; Displaying according to the current monocular frame image signal;

Before displaying the next single warm frame image signal, a black picture ^ image signal is displayed, and the display time of the black picture frame image signal is smaller than the display time of the single eye frame image signal.

According to the above-mentioned shutter type three-dimensional image display method, the black frame frame image signal is displayed before the next single shuffle image signal is displayed, so that a black frame is inserted between the left and right eye single frame images. The surface of the single-frame image of the left and right eyes can be eliminated, and the crosstalk problem of the 3D image is improved. Moreover, since the display time of the black image shouting image signal is smaller than the display time of the single-eye frame image signal, the refresh rate of the required display device is relatively The lower, thereby ensuring sufficient charging time of the pixel electrode in the display device, improving the quality of the display screen; and, because the product yield of the display device with a low refresh rate is high, the cost of the 3D display product can be reduced.

Preferably, in order to facilitate the implementation, in the foregoing display method provided by the embodiment of the present invention, the displaying a black frame frame image signal includes:

The gate scan lines in the display device are divided into N groups, and each group of gate scan lines is sequentially turned on to display a black frame frame image signal, where N is a positive integer greater than 1.

Preferably, in order to ensure that the refresh rate of the display device is low, in the above display method provided by the embodiment of the present invention, the displaying the black frame frame image signal specifically includes:

All the gate scan lines are turned on at the same time, and the black frame image signals are displayed.

Preferably, in order to facilitate the implementation, in the above display method provided by the embodiment of the present invention, the simultaneously opening all the »pole scan lines, specifically includes:

Receiving a control signal sent by the counter control register;

Upon receipt of the control signal, a gate scan signal is simultaneously transmitted to all of the gate scan lines. Preferably, in order to improve the image crosstalk problem in the 3D display, in the above method provided by the embodiment of the present invention, the display time of the black image machine image signal is greater than or equal to the display time of the single eye frame image signal. One of the parts, where M is the number of all gate scan lines in the display device.

A shutter type three-dimensional image display device according to an embodiment of the present invention includes:

Receiving unit, receiving a current monocular frame image signal to be displayed;

a display unit, configured to display according to the current monocular frame image signal; and before displaying the next monocular frame image signal, displaying a black frame frame image signal, where the black frame frame image signal is displayed The display time is less than the display time of the monocular frame image signal.

The above-mentioned shutter type three-dimensional image display device according to the embodiment of the present invention displays a black frame frame image signal before displaying the next single shuffle image signal, thus inserting a black frame between the left and right eye single frame images. The surface of the single-frame image of the left and right eyes can be eliminated, and the crosstalk problem of the 3D image is improved. Moreover, since the display time of the black image shouting image signal is smaller than the display time of the single-eye frame image signal, the refresh rate of the required display device is relatively The lower, thereby ensuring sufficient charging time of the pixel electrode in the display device, improving the quality of the display screen; and, because the product yield of the display device with a low refresh rate is high, the cost of the 3D display product can be reduced.

Preferably, in the above apparatus provided by the embodiment of the present invention, the display unit divides the gate scan lines in the display device into N groups when the black image ^image signal is displayed, and sequentially opens each group. The gate scan line displays a black frame frame image signal, where N is a positive integer greater than one.

Preferably, in the above apparatus provided by the embodiment of the present invention, the display unit simultaneously turns on all the gate scan lines and displays the black frame frame image signal when displaying the black frame frame image signal.

Preferably, in the above apparatus provided by the embodiment of the present invention, the receiving unit is further configured to receive a control signal sent by the counter control register;

When the receiving unit receives the control signal, the display unit simultaneously transmits a gate scan signal to all of the gate scan lines.

Preferably, in order to improve the crosstalk problem of the 3D display, in the above apparatus provided by the embodiment of the present invention, when the display unit displays the black image frame image signal, the display time of the black image mechanical image signal is controlled to be greater than or Equal to one-third of the display time of the single warm-up image signal, where M is the number of all gate scan lines in the display device.

An embodiment of the present invention further provides a shutter type three-dimensional image display system, including:

a shutter type three-dimensional image display device, configured to communicate with the shutter glasses, and receive the current single-eye image signal to be displayed; display according to the current single-frame image signal; - giant. before displaying the next single-eye frame image signal Displaying a black picture frame image signal, where a display time of the black picture frame image signal is less than a display time of the single eye frame image signal;

Shutter glasses for communicating with the shutter type three-dimensional image display device to obtain a to-be-displayed image And the above-mentioned shutter type three-dimensional image display system provided by the embodiment of the present invention, before displaying the next single eye image signal, according to the frame frequency signal, and the left and right eyeglass lens switches of the shutter mirror are controlled according to the frame frequency signal. Displaying a black frame frame image signal, so that a black face is inserted between the left and right eye single frame images, which can eliminate the ghost of the left and right eye single frame images, improve the crosstalk problem of the 3D image; and, because of the black image^ The display time of the image signal is less than the display time of the image signal of the single warm frame, and the refresh frequency of the required display device is relatively low, thereby ensuring sufficient charging time of the pixel electrode in the display device and improving the quality of the display image; Because of the high product yield of the display device with low refresh rate, the cost of the 3D display product can be reduced.

1 is a flow chart of a shutter type 3D image display method provided by the present invention; FIG. 2 is a timing chart of a shutter type 3D image display provided by the present invention;

3 is a schematic structural view of a shutter type 3D image display device provided by the present invention. FIG. 4 is a schematic structural view of a shutter type 3D image display system provided by the present invention.

The specific embodiments of the method, device and system for shutter type three-dimensional image display provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

A method for displaying a shutter type three-dimensional image according to an embodiment of the present invention, as shown in FIG. 1, includes:

S10 receiving a current monocular frame image signal to be displayed;

S102. Display according to the current monocular frame image signal;

S103. Display a black frame frame image signal before displaying the next monocular frame image signal, and display time of the black-painted mechanical image signal is smaller than a display time of the single-eye mechanical image signal.

According to the above-mentioned shutter type three-dimensional image display method, the black frame frame image signal is displayed before the next monocular frame image signal is displayed, so that a black frame is inserted between the left and right eye single frame images. , it can eliminate the ghost of the single-frame image of the left and right eyes, improve the crosstalk problem of the 3D image; and, because the display time of the black image frame image signal is smaller than that of the single-eye frame image signal Display time, the refresh rate of the required display device is relatively low, thereby ensuring sufficient charging time of the pixel electrode in the display device, improving the quality of the display screen; and, because of the product yield of the display device with a low refresh rate Higher, can reduce the cost of 3D display products.

It should be noted that, in the foregoing method provided by the embodiment of the present invention, when the image to be displayed is a left eye image, the monocular frame image signal refers to a left shout image signal, and when the image to be displayed is a right eye image, a monocular The frame image signal refers to a right eye frame image signal.

Specifically, in the above display method provided by the embodiment of the present invention, the step S102 is performed according to the current single-eye image signal, which specifically includes:

The »scan signal is sent line by line to all the gate scan lines, and is displayed according to the current monocular frame image signal.

Preferably, in the above display method provided by the embodiment of the present invention, the step S102 is performed according to the current single-eye image signal, which specifically includes:

Receiving a frame open signal;

When the frame open signal is received, the gate scan signal is transmitted line by line to all the gate scan lines, and is displayed according to the current single limit frame image signal.

Preferably, in order to facilitate the implementation, in the above display method provided by the embodiment of the present invention, the black frame frame image signal is displayed in step S103, which specifically includes:

The » pole scan lines in the display device are divided into N groups, and each group of gate scan lines is sequentially turned on to display a black frame frame image signal, where N is a positive integer greater than 1.

Specifically, in a specific implementation, assuming that there are 100 gate scan lines in the display device, the » scan lines in the display device can be divided into 10 groups, each group has 10 adjacent gate scan lines, and then The group of the gate scan lines are displayed in a stepwise manner, and the black screen frame image signals are displayed. Of course, the gate scan lines in the display device may be divided into five groups, 20 groups, or other groups, which are not limited herein.

Preferably, in order to facilitate the implementation, in the above display method provided by the embodiment of the present invention, displaying a black frame frame image signal includes:

All the gate scan lines are turned on at the same time, and the black frame image signals are displayed. In this way, the black-face drawing is instantaneously generated as compared with the stepwise opening of each group of the polar scan lines, and it is not necessary to generate one frame of black pictures line by line. Therefore, it is not necessary to increase the driving frequency of the driving circuit of the display device, thereby It can ensure sufficient charging time of the pixel electrode in the display device, thereby improving the quality of the display screen. Specifically, in a specific implementation manner, in the foregoing display method provided by the embodiment of the present invention, displaying the black frame frame image signal may be specifically implemented by transmitting a zero-volt gray-scale signal to the data line.

Preferably, in order to facilitate the implementation, in the above display method provided by the embodiment of the present invention, all the gate scan lines are simultaneously turned on, which specifically includes:

Receiving a control signal sent by the counter control register;

When a control signal is received, a gate scan signal is simultaneously transmitted to all of the gate scan lines.

Preferably, in order to improve the crosstalk problem of the 3D display, in the above method provided by the embodiment of the present invention, the display time of the black frame frame image signal is greater than or equal to one-M of the display time of the single-eye image signal, wherein M is the number of all the gate scan lines in the display device.

Specifically, it is assumed that the time for displaying one frame of single warm frame image signal is 1 second, that is, the time for transmitting the scan signal to all the gate scan lines line by line is also 1 second. If there are M strips » extremely scan lines in the display unit, then the time to send the » scan signal to a » pole scan line is 1/M seconds. In order to improve the crosstalk problem of the 3D image, the time for displaying one frame of the black image signal is at least the time for the display device to transmit the gate scan signal to a gate scan line during normal display, that is, the time for displaying the black image signal of at least one frame is at least It is 1ZM seconds, and the longer the time of displaying one frame of black image signal, the more the crosstalk problem of the 3D image can be improved, but the longer the time for displaying the black image signal, the more the refresh frequency of the display device is required. high. Therefore, in the specific implementation, the time for displaying one frame of the black screen image signal is determined according to the actual response time of the liquid crystal molecules in the display device.

Preferably, in the above method provided by the embodiment of the present invention, the time for displaying one frame of the black picture signal is equal to 4% of the time for displaying the single warm image signal of one frame.

The specific working principle of the foregoing method provided by the embodiment of the present invention will be described below with reference to the timing diagram shown in FIG.

In Figure 2, XAO is the timing diagram of the control signal, STV is the timing diagram of the frame open signal, CPV is the timing diagram of the clock signal, and the gate scan line II is the gate scan signal of the II gate scan line, respectively. Timing diagram, where when XAO is a low level signal, it indicates that there is a control signal output, and when STV is a high level signal, it indicates that an angry turn-on signal is received.

In the first time period T1, the counter control register TCON has no control signal output. At this time, only when the frame open signal is received, all the gate scan lines start to output the gate scan signal row by row. At this stage, the display device displays one frame. Monocular frame image signal. In the second period T2, the counter control register TCON outputs a control signal. At this time, all the gate scan lines simultaneously output the gate scan signal. At this stage, all the pixels of the display device are simultaneously discharged, and the display device instantly displays a black screen.

In the third time period T3, the counter control register TCON has no control signal output. At this time, only when the frame open signal is received, all the gate scan lines start to output the scan signal line by line. At this stage, the display device displays one frame. Single warm frame image signal.

Specifically, if in the first time period T1, the display device displays a frame of left-clicking image signals; then, in the third time period Τ3, the display device displays a frame of right-eye image signals. On the other hand, if the display device displays a ^right eye frame image signal during the first time period T1, then, in the third time period Τ3, the display device displays a frame left image signal.

Based on the same inventive concept, an embodiment of the present invention further provides a shutter type three-dimensional image display device, as shown in FIG. 3, including:

The receiving unit 301 receives the current monocular frame image signal to be displayed;

The display unit 302 is configured to display according to the current monocular frame image signal; and before displaying the next monocular frame image signal, display the black frame frame image signal, and the display time of the black frame frame image signal is smaller than the display time of the monocular frame image signal.

The above-mentioned shutter type three-dimensional image display device according to the embodiment of the present invention displays a black frame frame image signal before displaying the next single eye image signal, thus inserting a black face between the left and right eye single frame images. It can eliminate the ghost of the single-frame image of the left and right eyes and improve the crosstalk problem of the 3D image; and, since the display time of the black image inversion image signal is smaller than the display time of the single-frame image signal, the refresh rate of the required display device is relatively The lower, thereby ensuring sufficient charging time of the pixel electrode in the display device, improving the quality of the display screen; and, because the product yield of the display device with a low refresh rate is high, the cost of the 3D display product can be reduced.

Preferably, in the above apparatus provided by the embodiment of the present invention, when the black frame frame image signal is displayed, the display unit 302 divides the scan lines of the drain in the display device into groups, and sequentially turns on the groups of gates. The polar scan line displays a black frame frame image signal, where Ν is a positive integer greater than one.

Preferably, in the above apparatus provided by the embodiment of the present invention, the display unit 302 simultaneously turns on all the gate scan lines and displays the black screen when displaying the black image frame image signal. Frame image signal.

Preferably, in the above apparatus provided by the embodiment of the present invention, the receiving unit is provided for the convenience of implementation.

301, further ffi is: receiving a control signal sent by a counter control register;

When the receiving unit 301 receives the control signal, the display unit 302 simultaneously scans all the gates 込 3⁄4 , 込 'Wi Ί - Λ 1 field I p 3⁄4.

Preferably, in order to improve the crosstalk problem of the 3D display, in the above apparatus provided by the embodiment of the present invention, the display unit 302 controls the display time of the black image image signal to be greater than or equal to the single eye frame when displaying the black image shouting image signal. One-third of the display time of the image signal, where M is the number of all gate scan lines in the display device.

Based on the same inventive concept, an embodiment of the present invention further provides a shutter type three-dimensional image display system, as shown in FIG. 4, including:

a shutter type three-dimensional image display device 401, configured to communicate with the shutter glasses 402, and receive a current monocular frame image signal to be displayed; display according to the current monocular frame image signal; and display black before displaying the next monocular frame image signal The frame frame image signal, the display time of the black frame frame image signal is smaller than the display time of the single warm mechanical image signal;

The shutter glasses 402 are configured to communicate with the shutter type three-dimensional image display device 401, acquire a frame rate signal of the to-be-displayed picture, and control switching of the left and right eyeglass lens switches of the shutter glasses according to the frame frequency signal.

The above-mentioned shutter type three-dimensional image display system according to the embodiment of the present invention displays a black frame frame image signal before displaying the next single warm image signal, so that a black frame is inserted between the left and right eye single frame images. In addition, the ghost of the single-frame image of the left and right eyes can be eliminated, and the crosstalk problem of the 3D image can be improved; and, since the display time of the black image mechanical image signal is smaller than the display time of the image signal of the single-eye frame, the required new frequency of the display device is The relatively low, plexus ensures that the pixel electrode in the display device has sufficient charging time, which improves the quality of the display screen; and, because the product yield of the display device with low refresh rate is high, the cost of the 3D display product can be reduced.

Further, in a specific implementation, in the above display system provided by the embodiment of the present invention, the shutter-type three-dimensional image display device 401 determines one of the preset plurality of frame rate modes according to the received monocular frame image signal to be displayed. The frame rate signal of the frame rate mode is the frame rate signal of the picture to be displayed.

In the above display system provided by the embodiment of the present invention, the switching of the left and right eyeglass lens switches of the shutter glasses is the same as that of the prior art, and is not described herein. A shutter type three-dimensional image display method, device and system are provided by the embodiment of the invention, the method comprising: receiving a current monocular frame image signal to be displayed; displaying according to a current monocular frame image signal; displaying a next single shouting image Before the signal, the black frame frame image signal is displayed, and the display time of the black frame frame image signal is smaller than the display time of the single eye ^ image signal. In the above display method provided by the embodiment of the present invention, since the black image shouting image signal is displayed before the next monocular frame image signal is displayed, a black surface of the frame is inserted between the left and right eye single frame images. Eliminating the ghost of the left and right eye single frame images, improving the crosstalk problem of the 3D image; and, since the display time of the black frame frame image signal is smaller than the display time of the monocular frame image signal, the refresh rate of the required display device is relatively low. Thereby, the pixel electrode in the display device has sufficient charging time and improves the quality of the display screen; and, 产品, because the product yield of the display device with low refresh frequency is high, the cost of the 3D display product can be reduced.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

1. A shutter-type three-dimensional image display method, characterized by including:

Receive the current monocular frame image signal to be displayed;

Display according to the current monocular frame image signal;

Before displaying the next single warm frame image signal, a black frame image signal is displayed, and the display time of the black frame image signal is shorter than the display time of the single frame image signal.

2. The method of claim 1, wherein displaying the black frame image signal specifically includes:

Divide the gate scanning lines in the display device into N groups, open each group of gate scanning lines in turn, and display the black frame image signal, where N is a positive integer greater than 1.

3. The method of claim 1, wherein displaying a black frame image signal specifically includes:

Turn on all »pole scan lines at the same time and display the black frame image signal.

4. The method of claim 3, wherein turning on all polar scan lines at the same time specifically includes;

Receive the control signal sent by the counter control register;

When receiving the control signal, gate scanning signals are sent to all gate scanning lines simultaneously.

5. The method of claim 4, wherein the display time of the black screen frame image signal is greater than or equal to one M of the display time of the single-eye frame image signal, where M is the center of the display device. Number of all » pole scan lines.

6. The method according to any one of claims 1 to 5, characterized in that the display of the black screen mechanical image signal can be achieved by sending a zero-volt grayscale signal to the data line.

7. The method according to claim 5, characterized in that the time to display a frame of black screen image signal is determined based on the actual response time of the liquid crystal molecules in the display device.

8. The method according to claim 7, wherein the time for displaying one frame of black picture signal is equal to 4% of the i-inch time for displaying one frame of monocular frame image signal.

9. A shutter-type three-dimensional image display device, characterized by including:

The receiving unit receives the current monocular frame image signal to be displayed; A display unit configured to display according to the current monocular frame image signal; and before displaying the next monocular frame image signal, display a black frame image signal, and the display time of the black frame image signal is shorter than the monocular frame image The display time of the signal.

10. The device according to claim 9, wherein when the display unit displays a black screen or an image signal, the gate scanning lines in the display device are divided into N groups, and each group of gate scanning lines is opened in sequence. , display the black picture frame image signal, where N is a positive integer greater than 1.

11. The device according to claim 9, wherein when displaying a black frame image signal, the display unit opens all gate scan lines at the same time to display a black frame image signal.

12. The device according to claim 11, characterized in that,

The receiving unit is also used to: receive the control signal sent by the counter control register; when the receiving unit receives the control signal, the display unit sends the scan number il to all the gate scan lines at the same time.

13. The device according to claim 12, wherein when the display unit displays the black frame image signal, the display time of the black frame image signal is controlled to be greater than or equal to the time of the single frame image signal. One-Mth of the display time, where M is the number of all gate scanning lines in the display device.

14. The device according to any one of claims 9 to 13, characterized in that when displaying a black screen and an image signal, this can be achieved by sending a zero-volt grayscale signal to the data line.

15. The method according to claim 13, characterized in that the time to display a frame of black screen image signal is determined based on the actual response time of the liquid crystal molecules in the display device.

16. The method according to claim 15, characterized in that the time for displaying one frame of black picture signal is equal to 4% of the time for displaying one frame of monocular image signal.

17. A shutter-type three-dimensional image display system, characterized by including;

A shutter-type three-dimensional image display device is used to communicate with shutter glasses, and to receive the current single-eye image signal to be displayed; to display according to the single-eye image signal; and before displaying the next single-eye image signal, display Black frame image signal, the display time of the black frame image signal is less than the display time of the single-eye frame image signal;

Shutter glasses are used to communicate with the shutter-type three-dimensional image display device, obtain the frame rate signal of the picture to be displayed, and control the switching of the left and right lens switches of the shutter glasses according to the frame rate signal.

18. The system according to claim 17, the shutter type three-dimensional image display device determines a frame of a video mode from a plurality of preset video modes according to the received single video signal to be displayed. The frequency signal is the frame rate signal of the picture to be displayed.