CN103179425B - Three-dimensional (3D) image display method and 3D liquid crystal television - Google Patents

Three-dimensional (3D) image display method and 3D liquid crystal television Download PDF

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Publication number
CN103179425B
CN103179425B CN201310101409.8A CN201310101409A CN103179425B CN 103179425 B CN103179425 B CN 103179425B CN 201310101409 A CN201310101409 A CN 201310101409A CN 103179425 B CN103179425 B CN 103179425B
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China
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backlight
3d
left
eyeglass
right
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CN201310101409.8A
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Chinese (zh)
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CN103179425A (en
Inventor
潘兴超
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四川长虹电器股份有限公司
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Abstract

The invention relates to a three-dimensional (3D) image display method which comprises the following steps of: extracting a field synchronous signal or a column synchronous signal in a 3D image signal, and producing a 3D glasses control signal; opening a left eyeglass or a right eyeglass of a pair of 3D glasses at a preset moment of the current field of a liquid crystal display screen, and closing the right eyeglass or the left eyeglass; at a preset moment of the subsequent field, closing the left eyeglass or the right eyeglass of a pair of 3D glasses, and opening the right eyeglass or the left eyeglass; within a time period of opening the left eyeglass, turning off the backlight of an image row of a right eye; within a time period of opening the right eyeglass, turning off the backlight of an image row of a left eye; and dynamically updating turn-on and turn-off of the backlight along with the images of the left eye or the images of the right eye. By the method, the problem of interference of the images of the left eye and the right eye in a 3D image display process can be solved; the display brightness and a display effect of a 3D image can be obviously improved; furthermore, the technical requirement on a liquid crystal display screen module is also reduced; and the cost of the whole machine is reduced.

Description

The display packing of 3D rendering and 3D LCD TV

Technical field

The present invention relates to display packing and the 3D LCD TV of 3D rendering.

Background technology

The 3D display general principle of LCD TV is the process by circuit, the two width images with parallax is passed to without interfering with each other respectively left eye and the right eye of people, under corticocerebral synthesis, forms stereo perception.

At present, 3D Display Technique can be divided into spectacle and the large class of bore hole formula two, and wherein spectacle 3D technology can be divided into aberration formula, polarization type and active-shutter again.

Wherein the cardinal principle of active-shutter 3D technology is divided into two frame by frame by 3D video image, form two pictures of corresponding left eye and right eye, by the cooperation of shutter type 3 D spectacles, make this two a series of paintings face enter left eye and right eye respectively, finally synthesize 3D stereopsis in the brain.The advantage of active-shutter 3D technology to realize full HD 3D effect, and difficult point is image frame display and the mating of glasses folding, and needs to carry out Synchronization Control to image frame and 3D glasses in practical application.

For LCDs, when the image display signal scanning of LCDs can not carry out Synchronization Control with the opening and closing of 3D glasses, 3D display performance can be affected, the problem such as the crosstalk of left-and right-eye images, the reduction of 3D rendering display brightness may be there is, good 3D display effect cannot be reached.Each two field picture of liquid crystal display module display is made up of several rows, and with behavior unit refresh picture data.The light transmission of liquid crystal display module, according to there being maintenance, namely after the view data of xth row refreshes, can maintain this light transmission, until there is new view data to refresh.Therefore liquid crystal display module is during the every two field picture of display, and most of the time right and left eyes image is mixed in together, if do not take technical measures, will cause right and left eyes image cross jamming.

The display and control mode of traditional shutter 3D TV be liquid crystal display module during the display of certain two field picture in, after all row or local continuous several rows complete view data refreshing, in the predetermined amount of time that all row view data are all stable, light whole or local backlight, close the backlight of other positions simultaneously.Although the method can realize the separation of 3D video right and left eyes image, but be subject to the impact that between the refresh rate of LCDs, each region of backlight module, brightness is disturbed mutually, cause image brightness during 3D state to decline a lot than the brightness under 2D state, and 3D rendering cross jamming control effects is also undesirable.

Summary of the invention

The invention provides a kind of display packing and 3D LCD TV of 3D rendering, to eliminate right and left eyes picture crosstalk in 3D LCDs procedure for displaying, and improve 3D rendering display brightness, improve 3D display effect.

The display packing of 3D rendering of the present invention, comprising:

Extract the field sync signal in 3D rendering signal or line synchronizing signal, and produce the folding signal of 3D glasses left and right eyeglass and backlight bright/cyclic control signal that goes out;

According to described field sync signal or line synchronizing signal, the preset time instant within the first row scanning start time of the current field of LCDs and the interval in last column end of scan moment, opens left eyeglass lens or the right eye eyeglass of 3D glasses; Another preset time instant within this interval or same preset time instant, close right eye eyeglass or left eyeglass lens;

Scan the preset time instant in the interval in moment in the first row scanning moment and the last column with back court, the left eyeglass lens of closedown 3D glasses or right eye eyeglass, another preset time instant within this interval or same preset time instant, unlatching right eye eyeglass or left eyeglass lens;

Within the time period that left eyeglass lens is opened, extinguish the backlight of LCDs display left eye image data update area and eye image row, light the backlight of all the other positions; Within the time period that right eye eyeglass is opened, extinguish the backlight of LCDs display right eye image data update area and left-eye image row, light the backlight of all the other positions; And the lighting or extinguish along with left-eye image or eye image do dynamic renewal of backlight.

Method of the present invention is the view data regeneration characteristics according to LCDs, first the images of left and right eyes open and close time of 3D glasses is determined, then according to the view data of the open and close state of glasses and LCDs more new state determine bright, the state of going out in each region of backlight module, the lighting time of backlight can be made full use of like this, thus image brightness when improve display 3D state, and make right and left eyes separation of images more thorough, reduce 3D rendering cross jamming.

Further, in order to reduce the backlight lighted to the impact of extinguishing backlight area, the backlight area of extinguishing comprises LCDs every a line view data when upgrading, and this row closes on capable backlight.The described several rows of closing on row and including near updated line.

Further, in order to keep the brightness uniformity of image, within a scan period, adjusting brightness when each backlight area is lighted, making each backlight area lighting time within the respective cycle mutually equal with its product lighting brightness.That is, when keeping each backlight area to light, brightness is the same, increases the fall time of other backlight area; Or keep the fall time of each backlight area constant, increase brightness when other backlight area is lighted.

Preferably, total display line number of LCDs is n, and described preset time instant is LCDs the n-th/2 row view data and upgrades the moment terminated.

Present invention also offers a kind of 3D LCD TV using said method, there is in structure the backlight module be connected with power transfer module, lead on direction at the light of backlight module and be provided with liquid crystal display module, described liquid crystal display module carries out signal by image-receptive control module and 3D glasses and is connected.

Wherein external power source is converted to the power supply needed for each module of television set by power transfer module, receives, go out control signal bright from the backlight of described image-receptive and control module simultaneously, controls the light on and off of backlight module each several part.

Image-receptive control module, for receiving 3D rendering signal, according to the field sync signal in 3D signal or line synchronizing signal, produces bright, the control signal of going out of backlight and 3D glasses left and right eyeglass folding signal.The light on and off that wherein backlight is bright, control signal of going out controls each region backlight in backlight module by described power transfer module; The folding of 3D glasses left and right eyeglass folding signal controlling shutter type 3 D spectacles images of left and right eyes eyeglass.

Liquid crystal display module receives the 3D rendering data exported from image-receptive and control module, completes each pixel display data in described LCDs refresh according to preset field, row sequential.The data refreshed determine the brightness that each pixel sends through backlight module.

Backlight module provides backlight for described liquid crystal display module.Backlight module is divided into some regions with liquid crystal display screen line display direction, the light on and off that the backlight produced by image-receptive control module is bright, control signal of going out controls each region of backlight module by power transfer module.Within the time period that left eyeglass lens is opened, extinguish the backlight of LCDs display eye image, light the backlight of all the other positions; Within the time period that right eye eyeglass is opened, extinguish the backlight of LCDs display left-eye image, light the backlight of all the other positions.

3D glasses are closure or openness that the 3D glasses left and right eyeglass folding signal produced according to image-receptive control module completes left and right eyeglass.Wherein eyeglass open time liquid crystal display module through light can pass eyeglass, when eyeglass closes liquid crystal display module through light can not pass eyeglass.

Concrete, described 3D glasses are shutter type 3 D spectacles.

The display packing of 3D rendering of the present invention and 3D LCD TV, the right and left eyes picture crosstalk problem occurred in 3D rendering procedure for displaying can be eliminated, significantly improve display brightness and the display effect of 3D rendering, also reduce the technical requirement of liquid crystal display module simultaneously, thus reduce the cost of complete machine.

Below in conjunction with the embodiment of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of 3D LCD TV of the present invention.

Fig. 2 is the flow chart of the display packing of 3D rendering of the present invention.

Fig. 3 is relation schematic diagram between the row field sync signal of liquid crystal display module in Fig. 2 method and 3D glasses synchronous signal.

Fig. 4 is that in Fig. 2 method, view data refreshes the schematic diagram with each region backlight light on and off relation.

Fig. 5 is the backlight schematic diagram extinguishing the adjacent domain had a significant effect in Fig. 2 method.

Fig. 6 is right and left eyes eyeglass folding in Fig. 2 method, right and left eyes view data and each region backlight light on and off relation schematic diagram.

Embodiment

3D LCD TV of the present invention as shown in Figure 1, have and be connected backlight module with power transfer module, lead on direction at the light of backlight module and be provided with liquid crystal display module, described liquid crystal display module carries out signal by image-receptive control module and shutter type 3 D spectacles and is connected.

Indicate method of the present invention in fig. 2,3D rendering signal is received by the image-receptive control module in Fig. 1, and produce the folding signal of 3D glasses left and right eyeglass and backlight bright/cyclic control signal that goes out, according to predetermined mode, the 3D rendering data after process are sent to LCD MODULE.

Above-mentioned 3D rendering data are refreshed the view data of images of left and right eyes in turn by LCD MODULE in units of field, line synchronizing signal during LCD MODULE refresh picture data or field sync signal are sent to image-receptive control module simultaneously.

The line synchronizing signal received or field sync signal are exported 3D glasses folding signal according to predetermined mode by image-receptive control module.As shown in Figure 3, within the first row scanning start time of current field and the interval in last column end of scan moment, image-receptive control module open when upgrading the capable view data of left eye m receiving or calculate liquid crystal display module 3D glasses left eyeglass lens, close right eye eyeglass, until close left eyeglass lens when starting to upgrade the capable view data of right eye m in back court, open right eye eyeglass.Wherein m is that the n-th/2 row view data of the total line number n of LCDs upgrades picturedeep corresponding to finish time.

Image-receptive control module also exports backlight control signal by after the line synchronizing signal received or field sync signal according to predetermined mode.Mode is as shown in Figure 4: image-receptive control module, receiving or calculating liquid crystal display module when upgrading xth row view data, extinguishes the backlight of xth row region and adjacent area thereof.The backlight area extinguished need meet: the backlight to the adjacent domain that one's own profession backlight illumination has a significant effect as shown in Figure 5.Fig. 6 indicates the backlight showing eye image place line position when left eyeglass lens is opened, and shows the backlight of left-eye image place line position when right eye eyeglass is opened.

Backlight drive circuit simultaneously by adjusting power transfer module adjusts brightness when each backlight area is lighted, and makes each backlight area lighting time within the respective cycle equal with the product that it lights brightness.Namely by the backlight control signal that adjustment image-receptive control module exports, extend the fall time of the backlight area that the fall time is shorter in the backlight of each region, make each backlight area lighting time within the respective cycle equal with the product that it lights brightness.The lighting or extinguish along with left-eye image or eye image do dynamic renewal of backlight.

Mode of the present invention is according to the view data refreshing feature of LCDs, first the images of left and right eyes open and close time of 3D glasses is determined, then bright, the state of going out in each region of backlight module is determined according to the open and close state of glasses and the view data Flushing status of LCDs, the lighting time of backlight can be made full use of like this, thus image brightness when improve display 3D state, and make right and left eyes separation of images more thorough, reduce 3D rendering cross jamming.

Claims (6)

  1. The display packing of 1.3D image, its feature comprises:
    Extract the field sync signal in 3D rendering signal or line synchronizing signal, and produce the folding signal of 3D glasses left and right eyeglass and backlight bright/cyclic control signal that goes out;
    According to described field sync signal or line synchronizing signal, the preset time instant within the first row scanning start time of the current field of LCDs and the interval in last column end of scan moment, opens left eyeglass lens or the right eye eyeglass of 3D glasses; Another preset time instant within this interval or same preset time instant, close right eye eyeglass or left eyeglass lens;
    Scan the preset time instant in the interval in moment in the first row scanning moment and the last column with back court, the left eyeglass lens of closedown 3D glasses or right eye eyeglass, another preset time instant within this interval or same preset time instant, unlatching right eye eyeglass or left eyeglass lens;
    Within the time period that left eyeglass lens is opened, extinguish the backlight of LCDs display left eye image data update area and eye image row, light the backlight of all the other positions; Within the time period that right eye eyeglass is opened, extinguish the backlight of LCDs display right eye image data update area and left-eye image row, light the backlight of all the other positions; And the lighting or extinguish along with left-eye image or eye image do dynamic renewal of backlight.
  2. 2. the display packing of 3D rendering as claimed in claim 1, is characterized by: the backlight area of extinguishing comprises LCDs every a line view data when upgrading, and this row closes on capable backlight.
  3. 3. the display packing of 3D rendering as claimed in claim 1, is characterized by: within a scan period, adjusts brightness when each backlight area is lighted, make each backlight area lighting time within the respective cycle mutually equal with its product lighting brightness.
  4. 4. the display packing of the 3D rendering as described in one of claims 1 to 3, is characterized by: total display line number of LCDs is n, and described preset time instant is LCDs the n-th/2 row view data and upgrades the moment terminated.
  5. 5. use the 3D LCD TV of method described in claim 1, it is characterized by: there is the backlight module be connected with power transfer module, lead on direction at the light of backlight module and be provided with liquid crystal display module, described liquid crystal display module carries out signal by image-receptive control module and 3D glasses and is connected.
  6. 6. use the 3D LCD TV of method described in claim 5, it is characterized by: described 3D glasses are shutter type 3 D spectacles.
CN201310101409.8A 2013-03-27 2013-03-27 Three-dimensional (3D) image display method and 3D liquid crystal television CN103179425B (en)

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TWI508050B (en) * 2013-08-15 2015-11-11 Benq Corp Displaying method and displaying apparatus
CN103531163B (en) * 2013-08-20 2016-01-06 明基电通有限公司 Display packing and display device

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CN101697595B (en) * 2009-09-11 2011-04-06 青岛海信电器股份有限公司 Method for displaying 3D image, television and glasses
KR101660971B1 (en) * 2009-11-06 2016-09-29 엘지디스플레이 주식회사 Stereoscopic image display and driving method thereof
TWI522993B (en) * 2010-06-23 2016-02-21 明基電通股份有限公司 Three-dimensional display system, display and method of controlling backlight of three-dimensional display
CN102612838B (en) * 2010-09-08 2014-02-12 青岛海信电器股份有限公司 Three dimensional image displaying method, system, three dimensional television and glasses
CN102881261B (en) * 2012-09-28 2014-12-17 青岛海信电器股份有限公司 Device and method for controlling backlight of 3D (three-dimensional) liquid crystal display screen and liquid crystal display television

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