CN102789774A - Method and device for optimizing 3D (three dimensional) display effect of LCD (liquid crystal display) screen and LCD television - Google Patents
Method and device for optimizing 3D (three dimensional) display effect of LCD (liquid crystal display) screen and LCD television Download PDFInfo
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Abstract
The invention discloses a method and device for optimizing the 3D (three dimensional) display effect of an LCD (liquid crystal display) screen, and a LCD television, and mainly aims to provide a method for optimizing the 3D display effect of the LCD screen, which reduces LCD screen crosstalk and improves the display brightness of the LCD screen. According to the method for optimizing the 3D display effect of the LCD screen, image data is received by the LCD screen for carrying out left eye image scanning and right eye image scanning alternately, the insertion time domain of one frame of gray image is set after the scanning of one frame of left eye image is ended, and within the time domain, a preset gray scale voltage which is greater than 0 gray scale and smaller than 32 gray scales is input to the LCD screen, so that the scanning of one frame of gray image is carried out by the LCD screen, and the frame of gray image is displayed; and the insertion time domain of one frame of gray image is set after the scanning of a frame of right eye image is ended, and within the time domain, a preset gray scale voltage which is greater than 0 gray scale and smaller than 32 gray scales is input to the LCD screen, so that a frame of gray image is displayed by the LCD screen. The method disclosed by the invention is easy to realize and operate, and is low in cost.
Description
Technical Field
The invention relates to a method and a device for optimizing a Liquid Crystal Display (LCD) 3D display effect and an LCD TV.
Background
With the rapid development of 3D display technology, 3D liquid crystal screens have become common day by day, and the existing 3D liquid crystal screens are mainly glasses type naked eyes, and in the glasses type 3D liquid crystal screens, the shutter type 3D liquid crystal screens have higher relative cost performance while realizing full high-definition 3D effect, and gradually become mainstream in the existing 3D liquid crystal screen products. The shutter type 3D liquid crystal screen divides an image into two parts to form two groups of pictures corresponding to left and right eyes of a user to be displayed in a staggered mode by improving the picture refreshing rate, a right lens is opened to close a left lens when a right-eye picture is displayed on the liquid crystal screen, a left lens is opened to close the right lens when a left-eye picture is displayed, each frame of picture enters the left and right eyes of the user respectively, and finally the 3D images are synthesized on the brain.
The three-dimensional stereoscopic display effect is the most important factor when watching 3D television, and the current factors influencing the shutter type 3D effect are many of them, Crosstalk (Crosstalk) and brightness are the more important factors, and the Crosstalk means that the left eye sees a part of the right eye image and the right eye sees a part of the left eye image. The crosstalk is generated because: the existing liquid crystal screen is scanned frame by frame and line by line, that is, the scanning of one frame of image is performed line by line from one position along one direction of the liquid crystal screen and is kept to be changed until the next frame of image signal is sent after the scanning is finished, for example, the liquid crystal screen receives a field of left eye image signal and starts to scan line by line from the top of the liquid crystal screen, the liquid crystal molecules reach a stable state line by line to display the left eye image, when the liquid crystal molecules at the bottom of the liquid crystal screen reach the stable state, the display of the left eye image is finished, the liquid crystal screen receives the next field of image signal, that is, the right eye image signal, the liquid crystal screen starts to scan line by line from the top of the liquid crystal screen, the liquid crystal molecules at the top of the liquid crystal screen deflect to reach the stable state to display the right eye image, but the liquid crystal molecules at the bottom, a part of the left-eye image is left on the liquid crystal screen, and the left-eye image and the right-eye image are displayed on the liquid crystal screen in a frame mode, so that crosstalk between the left-eye image and the right-eye image is generated.
In order to reduce crosstalk in the process of displaying a liquid crystal screen and reduce crosstalk when the liquid crystal screen displays a 3D picture and optimize picture quality when the liquid crystal screen displays a 2D picture, some manufacturers develop a liquid crystal screen with a refresh rate of 240Hz, the 240HZ shutter type 3D television mainly inserts a frame of black image between a left eye image and a right eye image which are originally displayed in a frame frequency of 120Hz, namely the liquid crystal screen displays images in a mode of alternating left, black, right and black images, the display time of each frame of image is 1/240s, and the left eye image and the black image are displayed in a time division mode in the opening time of a left spectacle lens and the right eye image and the black image are displayed in a time division mode in the opening time of a right spectacle lens by matching with on-off control of backlight and glasses. Although the crosstalk of the image can be reduced to a certain extent by the liquid crystal display driving method, due to the insertion of the black image, the brightness of the image is greatly reduced compared with the image before the black image is inserted into one frame, and the loss of the 3D display effect of the liquid crystal screen is brought to a certain extent.
Disclosure of Invention
Aiming at the problems, the invention provides a method and a device for optimizing the 3D display effect of a liquid crystal screen, which reduce the crosstalk of the liquid crystal screen and improve the brightness of the liquid crystal screen, and a liquid crystal television applying the method and the device.
In order to achieve the purpose, the method for optimizing the 3D display effect of the liquid crystal screen comprises the steps that the liquid crystal screen receives image data to alternately perform left eye image scanning and right eye image scanning, an insertion time domain of a frame of gray image is set after one frame of left eye image scanning is finished, and a preset gray scale voltage with the gray scale larger than 0 and smaller than 32 is input into the liquid crystal screen in the time domain, so that the liquid crystal screen performs one frame of gray image scanning and displays one frame of gray image;
and after the scanning of a frame of right eye image is finished, setting an insertion time domain of a frame of gray image, inputting a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen in the time domain, and enabling the liquid crystal screen to scan the frame of gray image to display the frame of gray image.
Further, the method at least comprises the following specific steps:
2.1 the grid line of the liquid crystal screen receives the left eye image scanning command, the data polar line of the liquid crystal screen receives the left eye image data, and the left eye image is displayed;
2.2 after the left eye image scanning is finished, the gate line of the liquid crystal screen receives a gray image scanning command, and the data line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
2.3 the grid line of the liquid crystal screen receives the scanning instruction of the right eye image, the data line of the liquid crystal screen receives the data of the right eye image, and the right eye image is displayed;
2.4 when the scanning of the right eye image is finished, the grid line of the liquid crystal screen receives a gray image scanning instruction, and the data grid line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
2.5 repeat the above steps 2.1 to 2.4.
In particular, the liquid crystal screen is illuminated by a plurality of groups of backlight sources to display images,
when a left eye image or a right eye image is scanned on the liquid crystal screen, the backlight source group of the corresponding area on the liquid crystal screen is synchronously opened;
when the liquid crystal screen scans gray images, the multiple groups of backlight sources are simultaneously turned on.
Further, before step 2.2 and step 2.4, respectively, a step of determining a predetermined grayscale voltage is included, and the step specifically includes:
4.1 designating a fixed gray scale voltage greater than 0 and less than 32 levels;
and 4.2 judging the gray scale voltage of the previous frame image, the gray scale voltage of the next frame image and the fixed gray scale voltage of the gray image, and taking the minimum gray scale voltage value as the preset gray scale voltage.
Further, the gray image is a gray image without picture content
In order to achieve the above purpose, the device for optimizing the 3D display effect of the liquid crystal screen of the present invention includes a liquid crystal screen, an image control unit and a backlight control unit, wherein the liquid crystal screen receives image data output by the image control unit to alternately perform left eye image scanning and right eye image scanning, the image control unit sets an insertion time domain of a frame of gray image after a frame of left eye image scanning is finished, and in the time domain, the image control unit inputs a predetermined gray scale voltage greater than 0 gray scale and less than 32 gray scale to the liquid crystal screen to control the liquid crystal screen to perform scanning of a frame of gray image, so that the liquid crystal screen performs scanning of a frame of gray image to display a frame of gray image;
the image control unit sets an insertion time domain of a frame of gray image after scanning of a frame of right eye image is finished, and in the time domain, the image control unit inputs a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen to control the liquid crystal screen to scan the frame of gray image, so that the liquid crystal screen scans the frame of gray image and displays the frame of gray image.
Further, the image control unit comprises an image timing circuit board, a gate driver and a data driver electrically connected with the image timing circuit board, wherein the gate driver is connected with a gate line of the liquid crystal screen, the source driver is connected with a data line of the liquid crystal screen, the image timing circuit board outputs an instruction to the gate driver to open a scanning area of the liquid crystal screen, and the data driver receives image data output by the timing circuit board and respectively outputs a voltage for displaying a left eye image, a predetermined gray scale and a voltage for displaying a right eye image according to the image data to drive the liquid crystal screen, so that the liquid crystal screen sequentially and repeatedly displays a left eye image, a gray image, a right eye image and a gray image.
Further, the backlight source control unit comprises a plurality of groups of backlight sources and a time delay controller, wherein the backlight sources provide brightness required by image display on the liquid crystal screen, and when a left-eye image or a right-eye image is scanned on the liquid crystal screen, the time delay controller controls the backlight source groups in the corresponding area on the liquid crystal screen to be synchronously opened; when the liquid crystal screen scans the gray images, the time delay controller controls the multiple groups of backlight sources to be simultaneously opened.
Furthermore, the image time sequence circuit board is also connected with a gray scale comparison unit; wherein,
the time sequence circuit board designates a certain fixed gray scale voltage smaller than 32 orders as a first preset gray scale voltage;
the gray scale comparison unit judges the gray scale voltage of the previous frame image, the gray scale voltage of the next frame image and the first preset gray scale voltage, takes the minimum gray scale voltage value as the preset gray scale voltage, and outputs the preset voltage to the liquid crystal screen.
In order to achieve the purpose, the liquid crystal television at least comprises a liquid crystal screen, a device for optimizing the 3D display effect of the liquid crystal screen and shutter glasses matched with the liquid crystal television, wherein the device for optimizing the 3D display effect of the liquid crystal screen is the device for optimizing the 3D display effect of the liquid crystal screen.
1. The invention optimizes the method of 3D display effect of the liquid crystal screen, cooperate with the scanning law of the above-mentioned liquid crystal screen, through after scanning and displaying a frame of left (right) eye image of liquid crystal screen, scan and display a frame of gray image neither belonging to the left (right) eye image nor belonging to the right (left) eye image of the next frame first, scan and display the right (left) eye image of the next frame, wherein the gray image is a gray image without picture content of a frame, for example, when scanning a frame of left eye image on the liquid crystal screen, the left eye image is scanned line by line from the top of the liquid crystal screen, the liquid crystal molecule at the top of the liquid crystal screen reaches the steady state and displays the left eye image, but the scanning line of the partial bottom is still in the steady state of the previous frame of image, because the previous frame of image is a frame of gray image without picture, the image crosstalk can not be produced, the display of the left, similarly, when a frame of right-eye image is scanned on the liquid crystal screen, the right-eye image is scanned line by line from the top of the liquid crystal screen, liquid crystal molecules at the top of the liquid crystal screen reach a stable state to display the right-eye image, but a part of scanning lines at the bottom are still in the stable state of the previous frame of image, and as the previous frame of image is a frame of gray image without a picture, image crosstalk cannot be generated, and the display of the frame of right-eye image cannot be influenced.
2. The method for optimizing the 3D display effect of the liquid crystal screen obtains that the time consumption for deflecting the liquid crystal molecules on the liquid crystal screen from the low gray scale to the high gray scale is less than the time consumption for deflecting the liquid crystal molecules from the high gray scale to the low gray scale by testing the deflection speed of the liquid crystal molecules, and simultaneously obtains the 3D image displayed by the liquid crystal screen according to the statistical result of the gray scale value of the image of the liquid crystal screen watched by a user at ordinary times, wherein the 3D image is generally a brighter picture, the gray scale value of the image is generally higher than 32 gray scales, and only individual images can have picture content below 32 gray scales. The gray scale value of the gray image is larger than 0 gray scale and smaller than 32 gray scale, meanwhile, the judgment condition is set, the gray scale values of the input left eye image and right eye image are counted, the gray scale value of the gray image is not larger than the gray scale value of the previous frame left eye image and the next frame right eye image of the gray image, so that after the gray image on the liquid crystal screen is scanned, liquid crystal molecules are deflected to a stable state as soon as possible when the next frame image is displayed, if the gray scale value of the gray image is larger than the gray scale value of the next frame image, the display of the content of the next frame image is influenced, the time for turning the liquid crystal molecules on the liquid crystal screen to display the next frame image is longer, the stable state of the liquid crystal molecules is correspondingly shortened, and the brightness of the next frame image is reduced.
3. The device for optimizing the 3D display effect of the liquid crystal screen controls the time sequence of the output image through the image control unit and outputs the gray image according to the method, so that the 3D display effect of the liquid crystal screen is optimized.
Drawings
FIG. 1 is a flow chart of a method for optimizing 3D display effect of a liquid crystal screen according to the present invention;
FIG. 2 is a flowchart of determining a predetermined gray scale voltage according to the method for optimizing the 3D display effect of the LCD panel of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for optimizing a 3D display effect of a liquid crystal display according to the present invention;
FIG. 4 is a timing chart of the optimized liquid crystal television glasses lens of the invention corresponding to the display image of the liquid crystal screen.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The invention relates to a method for optimizing the 3D display effect of a liquid crystal screen, wherein the liquid crystal screen receives image data to alternately perform left eye image scanning and right eye image scanning, after the left eye image scanning of a frame is finished, an insertion time domain of a gray image is set, in the time domain, a preset gray scale voltage which is greater than 0 gray scale and smaller than 32 gray scale is input to the liquid crystal screen, so that the liquid crystal screen performs scanning of the gray image of the frame, and displays the gray image of the frame;
and after the scanning of a frame of right eye image is finished, setting an insertion time domain of a frame of gray image, inputting a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen in the time domain, and enabling the liquid crystal screen to scan the frame of gray image to display the frame of gray image.
As shown in fig. 1, the method for optimizing the 3D display effect of the liquid crystal display of the present invention specifically comprises the following steps:
2.1 the grid line of the liquid crystal screen receives the left eye image scanning command, the data polar line of the liquid crystal screen receives the left eye image data, and the left eye image is displayed;
in this step, the left-eye image of the liquid crystal screen is scanned, for example, line-by-line scanning is started from the top of the liquid crystal screen, liquid crystal molecules at the top of the liquid crystal screen deflect to reach a stable state, the left-eye image is displayed, but the liquid crystal molecules at the bottom are not scanned yet, and the liquid crystal molecules at the bottom are in a stable state of a previous frame of gray image, so that image crosstalk of the left-eye image cannot be generated because the gray image is a frame of non-picture image. The invention does not limit the scanning starting position and the scanning ending position of the right eye image on the liquid crystal screen, and the scanning mode of the right eye image can be progressive scanning or interlaced scanning or other scanning modes.
2.2 after the left eye image scanning is finished, the gate line of the liquid crystal screen receives a gray image scanning command, and the data line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
in this step, the gray image is a frame of gray image without picture content, which does not belong to the previous frame of left eye image nor the next frame of right eye image, for reducing crosstalk between the left eye image and the right eye image, and the gray image is convenient to generate.
2.3 the grid line of the liquid crystal screen receives the scanning instruction of the right eye image, the data line of the liquid crystal screen receives the data of the right eye image, and the right eye image is displayed;
in this step, the left-eye image of the liquid crystal screen is scanned, for example, the top of the liquid crystal screen is scanned line by line, the liquid crystal molecules at the top of the liquid crystal screen deflect to reach a stable state, the right-eye image is displayed, but the liquid crystal molecules at the bottom of the right-eye image are not scanned yet, and the liquid crystal molecules at the bottom of the right-eye image are in a stable state of a previous gray image, so that crosstalk of the right-eye image cannot be generated because the gray image is a frame of non. The invention does not limit the scanning starting position and the scanning ending position of the right eye image on the liquid crystal screen, and the scanning mode of the right eye image can be progressive scanning or interlaced scanning or other scanning modes.
2.4 when the scanning of the right eye image is finished, the grid line of the liquid crystal screen receives a gray image scanning instruction, and the data grid line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
the gray image is a gray image without a picture, which does not belong to either the left-eye image of the previous frame or the right-eye image of the next frame, for reducing crosstalk of the left-eye image and the right-eye image while the gray image is conveniently generated.
2.5 repeat the above steps 2.1 to 2.4.
In order to further optimize the display effect of the 3D image of the liquid crystal screen, when the left eye image and the right eye image are scanned on the liquid crystal screen, the backlight source group of the corresponding area on the liquid crystal screen is synchronously opened, although the backlight source group is opened to illuminate the whole liquid crystal screen in the mode, the display effect of the liquid crystal screen is better than the display effect of opening the backlight by taking the integral within the refreshing time of the liquid crystal screen because the main brightness is concentrated in the area with stable scanning; when a gray image is scanned on the liquid crystal screen, a frame of gray image without a picture is displayed, the display of the image has the main effect of increasing the brightness of the liquid crystal screen besides reducing crosstalk, a plurality of groups of backlight sources are simultaneously turned on for the convenience of controlling a backlight source group, and meanwhile, the duty ratio of a PWM signal of the LED backlight is generally adjusted to be more than 50% for meeting the requirement of the brightness.
The invention optimizes the method of 3D display effect of the liquid crystal screen, cooperate with the scanning law of the above-mentioned liquid crystal screen, through after scanning and displaying a frame of left (right) eye image of liquid crystal screen, scan and display a frame of gray image neither belonging to the left (right) eye image nor belonging to the right (left) eye image of the next frame first, scan and display the right (left) eye image of the next frame, wherein the gray image is a gray image without picture content of a frame, for example, when scanning a frame of left eye image on the liquid crystal screen, the left eye image is scanned line by line from the top of the liquid crystal screen, the liquid crystal molecule at the top of the liquid crystal screen reaches the steady state and displays the left eye image, but the scanning line of the partial bottom is still in the steady state of the previous frame of image, because the previous frame of image is a frame of gray image without picture, the image crosstalk can not be produced, the display of the left, similarly, when a frame of right-eye image is scanned on the liquid crystal screen, the right-eye image is scanned line by line from the top of the liquid crystal screen, liquid crystal molecules at the top of the liquid crystal screen reach a stable state to display the right-eye image, but a part of scanning lines at the bottom are still in the stable state of the previous frame of image, and as the previous frame of image is a frame of gray image without a picture, image crosstalk cannot be generated, and the display of the frame of right-eye image cannot be influenced.
The test of the deflection speed of the liquid crystal molecules shows that the deflection time of the liquid crystal molecules on the liquid crystal screen from the low gray scale to the high gray scale is less than that of the liquid crystal molecules from the high gray scale to the low gray scale, and meanwhile, the deflection time is obtained according to the statistical result of the gray scale value of the image of the liquid crystal screen watched by a user at ordinary times, the 3D image displayed by the liquid crystal screen is generally a brighter picture, the gray scale value of the image is generally higher than the 32 gray scale, and only individual images can have picture content below the 32 gray scale. The gray scale value of the gray image is larger than 0 gray scale and smaller than 32 gray scale, meanwhile, the judgment condition is set, the gray scale values of the input left eye image and right eye image are counted, the gray scale value of the gray image is not larger than the left (right) image of the previous frame and the right (left) image of the next frame of the gray image, so that after the gray image on the liquid crystal screen is scanned, liquid crystal molecules deflect to a stable state as soon as possible when the next frame of image is displayed, if the gray scale value of the gray image is larger than the gray scale value of the next frame of image, the display of the content of the next frame of image is influenced, the time for turning the liquid crystal molecules on the liquid crystal screen to display the next frame of image is longer, namely, the stable state of the liquid crystal molecules is correspondingly shortened, and the brightness of the next frame of image is probably reduced.
In order to better optimize the effect of the 3D display image of the liquid crystal panel, further, before step 2.2 and step 2.4, the method further includes a step of determining a predetermined gray scale voltage, where the step specifically includes:
4.1 designating a fixed gray scale voltage greater than 0 and less than 32 levels;
and 4.2 judging the gray scale voltage of the previous frame image of the gray image, the gray scale voltage of the next frame image of the gray image and the fixed gray scale voltage, and taking the minimum gray scale voltage value as the preset gray scale voltage for enabling the liquid crystal molecules to reach a stable state as soon as possible when the next frame image of the gray image is displayed.
As shown in fig. 2, the specific step of step 4.2 in the step of determining the gray scale voltage is:
a, judging whether the gray scale value of two frames of images before and after the gray scale image is larger than 32 gray scales or not,
if the gray scales are larger than 32 gray scales, the liquid crystal display is driven by the fixed gray scale voltage.
In this case, the gray scale value of the gray image is lower than the left eye image or the right eye image to be displayed after the gray image is scanned, and the time difference of deflection from all gray scale values below 32 gray scales to high gray scales is not large, and since most of the images displayed on the liquid crystal screen are above 32 gray scales, the gray scale voltage displayed on the gray image does not need to be changed when a certain fixed gray scale voltage is adopted, so that the output control of the gray image is facilitated.
If not greater than 32 gray levels
b judging whether the gray scale voltage of the image with smaller gray scale value in the two frames of images before and after the gray scale image is less than the fixed gray scale voltage,
if not, a fixed gray scale voltage is taken to drive the liquid crystal screen;
and if the gray scale value is smaller than the preset gray scale value, the gray scale voltage of the image with the smaller gray scale value is used for driving the liquid crystal screen.
Correspondingly, as shown in fig. 3, the apparatus for optimizing a 3D display effect of a liquid crystal screen of the present invention includes a liquid crystal screen, an image control unit and a backlight control unit, wherein the liquid crystal screen receives image data output by the image control unit to alternately perform left eye image scanning and right eye image scanning, the image control unit sets an insertion time domain of a frame of gray image after a frame of left eye image scanning is finished, and in the time domain, the image control unit inputs a predetermined gray scale voltage greater than 0 gray scale and less than 32 gray scale to the liquid crystal screen to control the liquid crystal screen to perform scanning of a frame of gray image, so that the liquid crystal screen performs scanning of a frame of gray image, and displays a frame of gray image;
the image control unit sets an insertion time domain of a frame of gray image after scanning of a frame of right eye image is finished, and in the time domain, the image control unit inputs a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen to control the liquid crystal screen to scan the frame of gray image, so that the liquid crystal screen scans the frame of gray image and displays the frame of gray image.
The image control unit comprises an image time sequence circuit board, a grid driver and a data driver which are electrically connected with the image time sequence circuit board, wherein the grid driver is connected with a grid line of the liquid crystal screen, the source driver is connected with a data line of the liquid crystal screen, the image time sequence circuit board outputs an instruction to the grid driver to open a scanning area of the liquid crystal screen, the data driver receives image data output by the time sequence circuit board and respectively outputs voltage for displaying a left eye image, a preset gray scale and voltage for displaying a right eye image according to the image data to drive the liquid crystal screen, so that the liquid crystal screen sequentially and repeatedly displays the left eye image, the gray image, the right eye image and the gray image, and the image time sequence circuit board is also connected with a gray; wherein,
the time sequence circuit board designates a certain fixed gray scale voltage smaller than 32 orders as a first preset gray scale voltage;
the gray scale comparison unit judges the gray scale voltage of the previous frame image, the gray scale voltage of the next frame image and the first preset gray scale voltage, takes the minimum gray scale voltage value as the preset gray scale voltage, and outputs the preset voltage to the liquid crystal screen.
The backlight source control unit comprises a plurality of groups of backlight sources and a time delay controller, wherein the backlight sources provide brightness required by image display on the liquid crystal screen, and when a left eye image or a right eye image is scanned on the liquid crystal screen, the time delay controller controls the backlight source groups in the corresponding area on the liquid crystal screen to be synchronously opened; when the liquid crystal screen scans the gray images, the time delay controller controls the multiple groups of backlight sources to be simultaneously opened.
The liquid crystal television at least comprises a liquid crystal screen, a device for optimizing the 3D display effect of the liquid crystal screen and shutter type glasses matched with the liquid crystal television, wherein the device for optimizing the 3D display effect of the liquid crystal screen is the device for optimizing the 3D display effect of the liquid crystal screen.
Example 1:
the method and the device for optimizing the liquid crystal display screen of the embodiment are described by using an 8-bit liquid crystal display screen for displaying 240 frames of images within 1 second, and meanwhile, the specific steps of taking the gray scale voltage of a gray image with the gray scale value of 25 as a fixed gray scale voltage and taking the first left eye image, the first right eye image, the second left eye image and the second right eye image with the gray scale values of 4 frames of 40, 50, 30 and 20 in sequence for time-sharing display are taken as examples to illustrate the invention, the liquid crystal display screen of the embodiment improves the brightness of the liquid crystal screen while reducing crosstalk compared with the liquid crystal screen which applies a black insertion technology to avoid crosstalk of the left eye image and the right eye image with the same specification, and the specific steps are as follows:
s1 first left-eye image display: a gate line of the liquid crystal screen receives a left eye image scanning instruction, a data gate line of the liquid crystal screen receives first left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, a backlight source group in a corresponding area of the liquid crystal screen is synchronously opened, a first left eye image is displayed, gray scale values of the first left eye image and the first right eye image are obtained by judging the gray scale values of the first left eye image and the first right eye image, the gray scale values are both greater than 32, and a fixed gray scale voltage is taken to drive the liquid crystal screen in a waiting time domain after the images are displayed;
s2 gray image display: when the scanning of the first left-eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 25 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 25 steps is displayed on the liquid crystal screen;
s3 first right-eye image display: when the gray image scanning is finished, a gate line of the liquid crystal screen receives a first right eye image scanning instruction, a data line of the liquid crystal screen receives first right eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, a backlight source group in a corresponding area of the liquid crystal screen is synchronously opened, the first right eye image is displayed, when liquid crystal molecules in a scanning line at the top of the liquid crystal screen deflect to a stable state and then liquid crystal molecules at the bottom are still in a stable state of a previous frame of gray image, because the gray image is a frame of non-frame image which does not belong to the first right eye image, the crosstalk of the image can not be generated, the gray level value of the gray image is lower than that of the first right eye image, the first right eye image can be quickly deflected to the stable state, the gray level value of the second left eye image is smaller than 32 by judging the gray level values of the first right eye image and the second left eye image, but the, in the waiting time domain after the image is displayed, a fixed gray scale voltage is taken to drive the liquid crystal screen;
s4 gray image display: when the scanning of the first right eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 25 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 25 steps is displayed on the liquid crystal screen;
s5 second left-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second left eye image scanning instruction, the data line of the liquid crystal screen receives second left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second left eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the gray image of the previous frame, because the gray image is a frame of non-picture image which does not belong to the second left eye image, the crosstalk of the image can not be generated, and the gray value of the gray image is lower than that of the second left eye image, the second left eye image can be quickly deflected to the stable state, and the gray values of the first right eye image and the second right eye image are obtained by judging the gray values, but the gray scale voltage of the second right eye image is less than the fixed gray scale voltage, and the gray scale voltage of the second right eye image is taken to drive the liquid crystal screen in the waiting time domain after the image is displayed;
s6 gray image display: when the second left-eye image is scanned, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 25 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 25 steps is displayed on the liquid crystal screen;
s7 second right-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second right eye image scanning instruction, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second right eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the previous frame of gray image, because the gray image is a frame of non-picture image which does not belong to the second right eye image, the image crosstalk can not be generated, the gray value of the gray image is equal to that of the second right eye image, the second left eye image can quickly reach the stable state, and the gray values of the second right eye image and the next frame of left eye image are judged to determine the gray value of the gray.
Correspondingly, the apparatus for optimizing the 3D display effect of the liquid crystal screen in this embodiment includes a liquid crystal screen, an image control unit and a backlight control unit, where the image control unit includes an image timing circuit board and a gray scale comparison unit connected to the timing circuit board, and corresponds to the display steps of the 4 frames of left-eye and right-eye images and the gray image after the left-eye and right-eye images are displayed in the method in this embodiment, the implementation process of the apparatus in this embodiment is as follows:
corresponding to method step S1, the image timing circuit board, i.e., TCON board, outputs the binary first left-eye image data signal to the data driver, which converts the binary data into an analog signal, i.e. 40 gray levels of dc voltage, which determines the deflection angle of the liquid crystal molecules on the liquid crystal panel, meanwhile, the grid driver starts to scan the liquid crystal screen line by line under the control of the image time sequence circuit board and in coordination with the time sequence of the output direct-current voltage of the data driver, meanwhile, the backlight source control unit controls the backlight source corresponding to the liquid crystal screen to be synchronously opened to display a first left-eye image, the gray scale comparison unit obtains gray scale values of the first left eye image and the first right eye image by judging the gray scale values of the first left eye image and the first right eye image, wherein the gray scale values are both larger than 32, and the result is fed back to the image time sequence circuit board;
corresponding to the method step S2, the image timing circuit board drives the liquid crystal display by taking a fixed gray scale voltage according to the result output by the gray scale comparison unit, outputs a binary gray eye image data signal to the data driver, the data driver converts the binary data into an analog signal, i.e. a direct current voltage of 25 gray scales, drives the liquid crystal display, and simultaneously the gate driver starts to scan the liquid crystal display line by line under the control of the image timing circuit board in cooperation with the timing of the direct current voltage output by the data driver, and simultaneously, the backlight control unit controls all backlight sets to be simultaneously turned on;
corresponding to the method step S3, the image timing circuit board outputs a binary signal of the first right eye image data to the data driver, the data driver converts the binary data into an analog signal, i.e. a dc voltage of 50 gray levels, to drive the liquid crystal display, and the gate driver starts scanning the liquid crystal display line by line in cooperation with the timing of the dc voltage output by the data driver under the control of the image timing circuit board, and simultaneously, the backlight control unit controls the backlight corresponding to the liquid crystal display to be synchronously turned on for displaying the first right eye image, and the gray scale comparison unit obtains a gray scale value of the second left eye image smaller than 32 gray levels but larger than a fixed gray scale voltage by judging the gray scale values of the first right eye image and the second left eye image, and feeds back the result to the image timing circuit board;
corresponding to the method step S4, the image timing circuit board drives the liquid crystal display by taking a fixed gray scale voltage according to the result output by the gray scale comparison unit, outputs a binary gray eye image data signal to the data driver, the data driver converts the binary data into an analog signal, i.e. a direct current voltage of 25 gray scales, drives the liquid crystal display, and simultaneously the gate driver starts to scan the liquid crystal display line by line under the control of the image timing circuit board in cooperation with the timing of the direct current voltage output by the data driver, and simultaneously, the backlight control unit controls all backlight sets to be simultaneously turned on;
corresponding to method step S5, the image timing circuit board outputs a binary signal of the second left-eye image data to the data driver, the data driver converts the binary data into an analog signal, i.e. 30 gray-scale direct current voltage, drives the liquid crystal display screen, simultaneously, the grid driver is matched with the time sequence of the direct current voltage output by the data driver under the control of the image time sequence circuit board to start to scan the liquid crystal display screen line by line, meanwhile, the backlight source control unit controls the backlight source corresponding to the liquid crystal screen to be synchronously opened to display a second left eye image, and the gray scale comparison unit obtains the gray scale values of the first right eye image and the second right eye image which are both smaller than the fixed gray scale value and smaller than 32 gray scales by judging the gray scale values of the second left eye image and the second right eye image, but the gray scale voltage of the second right eye image is less than the fixed gray scale voltage, and the result is fed back to the image time sequence circuit board;
corresponding to the method step S6, the image timing circuit board obtains the gray scale voltage of the second right eye image according to the result output by the gray scale comparison unit to drive the liquid crystal screen, outputs a binary gray eye image data signal to the data driver, the data driver converts the binary data into an analog signal, i.e. a direct current voltage of 25 gray scales, drives the liquid crystal display screen, and simultaneously the gate driver starts to scan the liquid crystal screen line by line in cooperation with the timing sequence of the direct current voltage output by the data driver under the control of the image timing circuit board, and simultaneously, the backlight source control unit controls all the backlight source groups to be simultaneously turned on;
corresponding to the method step S7, the image timing circuit board outputs a binary signal of the first right eye image data to the data driver, the data driver converts the binary data into an analog signal, i.e. a dc voltage of 25 gray levels, to drive the liquid crystal display, the gate driver starts scanning the liquid crystal display line by line in cooperation with the timing of the dc voltage output by the data driver under the control of the image timing circuit board, the backlight control unit controls the backlight corresponding to the liquid crystal display to be synchronously turned on to display the second right eye image, and the gray scale comparison unit compares the gray scale values of the second right eye image, the fixed gray image and the next frame of left eye image, and feeds back the comparison structure to the timing circuit board.
The liquid crystal display television at least comprises a liquid crystal display screen, a device for optimizing the 3D display effect of the liquid crystal display screen and shutter glasses matched with the liquid crystal display television, wherein the device for optimizing the 3D display effect of the liquid crystal display screen is the device for optimizing the 3D display effect of the liquid crystal display screen, and the shutter glasses comprise a starting time sequence control unit which is used for outputting a starting signal of the shutter glasses in the gray image display process and controlling the liquid crystal molecule deflection of a spectacle lens corresponding to the next frame image of the gray image to achieve a stable state and the synchronization of the next frame image displayed by the liquid crystal display screen. As shown in fig. 4, one frame of left eye image L and one frame of gray image a are displayed during the time when the left lens L 'of the shutter glasses is fully opened, and one frame of right eye image R and one frame of gray image a are displayed during the time when the right lens R' of the shutter glasses is fully opened, and thus, they are alternately displayed.
Example 2:
the method and the device for optimizing the liquid crystal display screen of the embodiment are described by using a liquid crystal display screen of 10bit displaying 240 frames of images within 1 second, and meanwhile, the specific steps of taking the gray scale voltage of a gray image with the gray scale value of 8 as a fixed gray scale voltage and the time-sharing display of a first left eye image, a first right eye image, a second left eye image and a second right eye image with the gray scale values of 4 frames of 126, 140, 180 and 100 in sequence as an example are taken to illustrate the invention, compared with the liquid crystal display screen of the same specification, which applies the black insertion technology to avoid the crosstalk between the left eye image and the right eye image, the liquid crystal display screen of the embodiment reduces the crosstalk and improves the brightness of the liquid crystal display screen, and the specific:
s1 first left-eye image display: a gate line of the liquid crystal screen receives a left eye image scanning instruction, a data gate line of the liquid crystal screen receives first left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, a backlight source group in a corresponding area of the liquid crystal screen is synchronously opened, a first left eye image is displayed, gray scale values of the first left eye image and the first right eye image are obtained by judging the gray scale values of the first left eye image and the first right eye image, the gray scale values are both greater than 32, and a fixed gray scale voltage is taken to drive the liquid crystal screen in a waiting time domain after the images are displayed;
s2 gray image display: after the scanning of the first left-eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 8 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 8 steps is displayed on the liquid crystal screen;
s3 first right-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a first right eye image scanning instruction, the data line of the liquid crystal screen receives first right eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened to display the first right eye image, when the liquid crystal molecules of the scanning line at the top of the liquid crystal screen are deflected to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the gray image of the previous frame, since the gray image is a one-frame no-picture image not belonging to the first right-eye image, no image crosstalk is generated, and the gray level value of the gray image is lower than that of the first right-eye image, the first right-eye image can be quickly deflected to a stable state, in a waiting time domain after the image is displayed by judging that the gray scale values of the first right eye image and the second left eye image are both larger than 32 gray scales, and taking fixed gray scale voltage to drive the liquid crystal screen;
s4 gray image display: when the scanning of the first right eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 8 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 8 steps is displayed on the liquid crystal screen;
s5 second left-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second left eye image scanning instruction, the data line of the liquid crystal screen receives second left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second left eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state of the last frame of gray image, because the gray image is a frame of non-picture image which does not belong to the second left eye image, the crosstalk of the image can not be generated, the gray value of the gray image is lower than that of the second left eye image, the second left eye image can be quickly deflected to the stable state, the gray values of the second left eye image and the second right eye image are judged to obtain the gray scales which are both larger than 32, and, taking a fixed gray scale voltage to drive the liquid crystal screen;
s6 gray image display: when the second left-eye image is scanned, the gate lines of the liquid crystal screen receive a gray scanning instruction, the data gate lines of the liquid crystal screen receive 8 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 8 steps is displayed on the liquid crystal screen;
s7 second right-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second right eye image scanning instruction, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second right eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the previous frame of gray image, because the gray image is a frame of non-picture image which does not belong to the second right eye image, the image crosstalk can not be generated, the gray value of the gray image is smaller than that of the second right eye image, the second left eye image can quickly reach the stable state, and the gray values of the second right eye image and the next frame of left eye image are judged to determine the gray value of the gray.
Correspondingly, the device for optimizing the 3D display effect of the liquid crystal display screen in this embodiment includes a liquid crystal display screen, an image control unit and a backlight control unit, where the image control unit includes an image timing circuit board and a gray scale comparison unit connected to the timing circuit board, the device in this embodiment is the same as the device in embodiment 1, and only corresponding to the above steps, the timing circuit board outputs different image signals.
The liquid crystal television at least comprises a liquid crystal screen, a device for optimizing the 3D display effect of the liquid crystal screen and shutter type glasses matched with the liquid crystal television, wherein the device for optimizing the 3D display effect of the liquid crystal screen is the device for optimizing the 3D display effect of the liquid crystal screen.
Example 3:
the method and the device for optimizing the liquid crystal display screen of the embodiment are described by using a 6-bit liquid crystal display screen for displaying 240 frames of images within 1 second, and meanwhile, the invention is described by taking the specific steps of taking the gray scale voltage of a gray image with the gray scale value of 16 as a fixed gray scale voltage and taking the specific steps of displaying a first left eye image, a first right eye image, a second left eye image and a second right eye image with the gray scale values of 4 frames of 20, 30, 15 and 16 in sequence in a time-sharing manner as an example, compared with the liquid crystal display screen with the same specification, which applies a black insertion technology to avoid crosstalk of the left eye image and the right eye image, the liquid crystal display screen of the embodiment reduces crosstalk and improves the brightness of the liquid crystal display:
s1 first left-eye image display: a gate line of the liquid crystal screen receives a left eye image scanning instruction, a data gate line of the liquid crystal screen receives first left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, a backlight source group in a corresponding area of the liquid crystal screen is synchronously opened, first left eye image display is carried out, gray scale values of the first left eye image and the first right eye image are obtained by judging gray scale values of the first left eye image and the first right eye image, the gray scale values are both smaller than 32, but gray scale voltages of the left eye image and the right eye image are both larger than a fixed gray scale voltage, and the fixed gray scale voltage is taken to drive the liquid crystal screen in a waiting time;
s2 gray image display: after the scanning of the first left-eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 16 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 16 steps is displayed on the liquid crystal screen;
s3 first right-eye image display: when the gray image scanning is finished, a gate line of the liquid crystal screen receives a first right eye image scanning instruction, a data line of the liquid crystal screen receives first right eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, a backlight source group in a corresponding area of the liquid crystal screen is synchronously opened, the first right eye image is displayed, when liquid crystal molecules in a scanning line at the top of the liquid crystal screen deflect to a stable state, the liquid crystal molecules at the bottom are still in a stable state of a previous frame of gray image, because the gray image is a frame of non-frame image which does not belong to the first right eye image, the crosstalk of the image can not be generated, the gray level value of the gray image is lower than that of the first right eye image, the first right eye image can be quickly deflected to the stable state, and by judging that the gray level values of the first right eye image and the second left eye image are both smaller than 32 gray level and, in the waiting time domain after the image is displayed, taking the gray scale voltage of the second left eye image to drive the liquid crystal screen;
s4 gray image display: when the scanning of the first right eye image is finished, a gate line of the liquid crystal screen receives a gray scanning instruction, a data gate line of the liquid crystal screen receives 16 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a gray scale value of 16 steps is displayed on the liquid crystal screen;
s5 second left-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second left eye image scanning instruction, the data line of the liquid crystal screen receives second left eye image data, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second left eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the previous frame of gray image, because the gray image is a frame of non-picture image which does not belong to the second left eye image, the crosstalk of the image can not be generated, the gray level value of the previous frame of gray image is equal to the second left eye image, the second left eye image can be quickly deflected to the stable state, the gray level values of the second left eye image and the second right eye image are judged to obtain the gray, in the waiting time domain after the image is displayed, a fixed gray scale voltage is taken to drive the liquid crystal screen;
s6 gray image display: after the second left-eye image is scanned, the gate lines of the liquid crystal screen receive gray scanning instructions, the data gate lines of the liquid crystal screen receive 16 gray scale voltages, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, all groups of backlight sources are turned on, and a frame of gray image without pictures and with a 16-step gray scale value is displayed on the liquid crystal screen;
s7 second right-eye image display: when the gray image scanning is finished, the gate line of the liquid crystal screen receives a second right eye image scanning instruction, the liquid crystal screen is scanned line by line from the top of the liquid crystal screen, the backlight source group in the corresponding area of the liquid crystal screen is synchronously opened, the second right eye image display is carried out, when the liquid crystal molecules in the scanning line at the top of the liquid crystal screen deflect to reach the stable state, the liquid crystal molecules at the bottom are still in the stable state of the previous frame of gray image, because the gray image is a frame of non-picture image which does not belong to the second right eye image, the image crosstalk can not be generated, the gray value of the gray image is smaller than that of the second right eye image, the second left eye image can quickly reach the stable state, and the gray values of the second right eye image and the next frame of left eye image are judged to determine the gray value of the gray.
Correspondingly, the apparatus for optimizing the 3D display effect of the liquid crystal display in this embodiment includes a liquid crystal display, an image control unit, and a backlight control unit, where the image control unit includes an image timing circuit board and a gray scale comparison unit connected to the timing circuit board, the apparatus in this embodiment is the same as the apparatus in embodiments 1 and 2, and only corresponds to the above method steps in this embodiment, and the timing circuit board outputs different image signals.
The liquid crystal display television at least comprises a liquid crystal display screen, a device for optimizing the 3D display effect of the liquid crystal display screen and shutter glasses matched with the liquid crystal display television, wherein the device for optimizing the 3D display effect of the liquid crystal display screen is the device for optimizing the 3D display effect of the liquid crystal display screen, and the shutter glasses comprise a starting time sequence control unit which is used for outputting a starting signal of the shutter glasses in the gray image display process and controlling the liquid crystal molecule deflection of a spectacle lens corresponding to the next frame image of the gray image to achieve a stable state and the synchronization of the next frame image displayed by the liquid crystal display screen. As shown in fig. 4, one frame of left eye image L and one frame of gray image a are displayed during the time when the left lens L 'of the shutter glasses is fully opened, and one frame of right eye image R and one frame of gray image a are displayed during the time when the right lens R' of the shutter glasses is fully opened, and thus, they are alternately displayed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. A method for optimizing the 3D display effect of a liquid crystal screen, wherein the liquid crystal screen receives image data to alternately perform left eye image scanning and right eye image scanning, is characterized in that: after scanning of a frame of left-eye image is finished, setting an insertion time domain of a frame of gray image, and inputting a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen in the time domain to enable the liquid crystal screen to display the frame of gray image;
and after the scanning of one frame of right eye image is finished, setting an insertion time domain of one frame of gray image, and inputting a preset gray scale voltage with the gray scale larger than 0 and smaller than 32 to the liquid crystal screen in the time domain to enable the liquid crystal screen to display one frame of gray image.
2. The method for optimizing the 3D display effect of the liquid crystal screen according to claim 1, wherein the method comprises the following steps: the method at least comprises the following specific steps:
2.1 the grid line of the liquid crystal screen receives the left eye image scanning command, the data polar line of the liquid crystal screen receives the left eye image data, and the left eye image is displayed;
2.2 after the left eye image scanning is finished, the gate line of the liquid crystal screen receives a gray image scanning command, and the data line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
2.3 the grid line of the liquid crystal screen receives the scanning instruction of the right eye image, the data line of the liquid crystal screen receives the data of the right eye image, and the right eye image is displayed;
2.4 when the scanning of the right eye image is finished, the grid line of the liquid crystal screen receives a gray image scanning instruction, and the data grid line of the liquid crystal screen receives a preset gray scale voltage which is greater than 0 gray scale and less than 32 gray scale, so that gray image display is carried out;
2.5 repeat the above steps 2.1 to 2.4.
3. The method for optimizing the 3D display effect of the liquid crystal screen according to claim 1, wherein the method comprises the following steps: the liquid crystal screen is illuminated by a plurality of groups of backlight sources to display images,
when a left eye image or a right eye image is scanned on the liquid crystal screen, the backlight source group of the corresponding area on the liquid crystal screen is synchronously opened;
when the liquid crystal screen scans gray images, the multiple groups of backlight sources are simultaneously turned on.
4. The method for optimizing the 3D display effect of the liquid crystal screen according to claim 2, wherein the method comprises the following steps: before step 2.2 and step 2.4, respectively, a step of determining a predetermined gray scale voltage is included, and the steps specifically include:
4.1 designating a fixed gray scale voltage greater than 0 and less than 32 levels;
and 4.2 judging the gray scale voltage of the previous frame image, the gray scale voltage of the next frame image and the fixed gray scale voltage of the gray image, and taking the minimum gray scale voltage value as the preset gray scale voltage.
5. The method for optimizing the 3D display effect of the liquid crystal screen according to any one of claims 1 to 4, wherein the method comprises the following steps: the gray image is a gray image of one frame without picture content.
6. The device for optimizing the 3D display effect of the liquid crystal screen comprises the liquid crystal screen, an image control unit and a backlight source control unit, wherein the liquid crystal screen receives image data output by the image control unit to alternately perform left eye image scanning and right eye image scanning, and is characterized in that: the image control unit sets an insertion time domain of a frame of gray image after scanning of a frame of left-eye image is finished, and in the time domain, the image control unit inputs a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen to enable the liquid crystal screen to display a frame of gray image;
the image control unit sets an insertion time domain of a frame of gray image after scanning of a frame of right eye image is finished, and in the time domain, the image control unit inputs a preset gray scale voltage with a gray scale larger than 0 and smaller than 32 to the liquid crystal screen to enable the liquid crystal screen to display a frame of gray image.
7. The device for optimizing the 3D display effect of the liquid crystal screen according to claim 6, wherein: the image control unit comprises an image time sequence circuit board, a grid driver and a data driver which are electrically connected with the image time sequence circuit board, wherein the grid driver is connected with a grid line of the liquid crystal screen, the source driver is connected with a data line of the liquid crystal screen, the image time sequence circuit board outputs an instruction to the grid driver to open a scanning area of the liquid crystal screen, the data driver receives image data output by the time sequence circuit board and respectively outputs voltage for displaying a left eye image, a preset gray scale and voltage for displaying a right eye image to drive the liquid crystal screen according to the image data, so that the liquid crystal screen sequentially and repeatedly displays the left eye image, the gray image, the right eye image and the gray image.
8. The device for optimizing the 3D display effect of the liquid crystal screen according to claim 6, wherein:
the backlight source control unit comprises a plurality of groups of backlight sources and a time delay controller, wherein the backlight sources provide brightness required by image display on the liquid crystal screen, and when a left eye image or a right eye image is scanned on the liquid crystal screen, the time delay controller controls the backlight source groups in the corresponding area on the liquid crystal screen to be synchronously opened; when the liquid crystal screen scans the gray images, the time delay controller controls the multiple groups of backlight sources to be simultaneously opened.
9. The device for optimizing the 3D display effect of the liquid crystal screen according to claim 7, wherein: the image time sequence circuit board is also connected with a gray scale comparison unit; wherein,
the time sequence circuit board designates a certain fixed gray scale voltage smaller than 32 orders as a first preset gray scale voltage;
the gray scale comparison unit judges the gray scale voltage of the previous frame image, the gray scale voltage of the next frame image and the first preset gray scale voltage, takes the minimum gray scale voltage value as the preset gray scale voltage, and outputs the preset voltage to the liquid crystal screen.
10. The utility model provides a liquid crystal TV, includes the LCD screen at least, optimizes the device of LCD screen 3D display effect and the shutter formula glasses that LCD TV matches which characterized in that: the device for optimizing the 3D display effect of the liquid crystal screen is the device for optimizing the 3D display effect of the liquid crystal screen according to any one of claims 6 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103051914A (en) * | 2013-01-06 | 2013-04-17 | 青岛海信电器股份有限公司 | 3D (three-dimensional) image display method, 3D image display device and television |
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