KR20130065091A - Stereoscopic image display device and driving method thereof - Google Patents
Stereoscopic image display device and driving method thereof Download PDFInfo
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- KR20130065091A KR20130065091A KR1020110131809A KR20110131809A KR20130065091A KR 20130065091 A KR20130065091 A KR 20130065091A KR 1020110131809 A KR1020110131809 A KR 1020110131809A KR 20110131809 A KR20110131809 A KR 20110131809A KR 20130065091 A KR20130065091 A KR 20130065091A
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- viewing distance
- stereoscopic image
- viewer
- value
- image
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2213/00—Details of stereoscopic systems
- H04N2213/001—Constructional or mechanical details
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a stereoscopic image display device and a driving method thereof for optimizing the image quality of a stereoscopic image according to a viewing distance of a viewer. The stereoscopic image display device according to the present invention is a stereoscopic image comprising a left eye image and a right eye image. An image display module displayed; A position detection module for detecting position information of a viewer watching the stereoscopic image; And a controller configured to calculate a viewing distance value based on the viewer's position information detected by the position detecting module, and to adjust the brightness of the stereoscopic image by controlling the image display module according to the calculated viewing distance value. Can be.
Description
The present invention relates to a stereoscopic image display device, and more particularly, to a stereoscopic image display device and a driving method thereof capable of optimizing an image quality of a stereoscopic image according to a viewing distance of a viewer.
In general, a stereoscopic (or 3D) image display device is a device that enables a viewer to view a stereoscopic image by binocular parallax between the left and right eyes of the viewer by providing different images.
In recent years, research has been actively conducted on the glasses-free method without wearing stereoscopic glasses. The autostereoscopic method includes a lenticular method for separating left and right eye images using a cylindrical lens array and a barrier method for separating left and right eye images using a barrier.
1 is a diagram schematically illustrating a general barrier type stereoscopic image display device.
Referring to FIG. 1, a general barrier type stereoscopic image display device includes a
The viewer views an image displayed on the
According to the general barrier type stereoscopic image display device, the planar image display mode or the stereoscopic image display mode can be switched according to the state of the
However, in the general barrier type stereoscopic image display device, since the aperture ratios of the
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is a technical object of the present invention to provide a stereoscopic image display apparatus and a driving method thereof capable of optimizing a stereoscopic image quality according to a viewing distance of a viewer.
According to an aspect of the present invention, there is provided a stereoscopic image display device comprising: an image display module displaying a stereoscopic image including a left eye image and a right eye image; A position detection module for detecting position information of a viewer watching the stereoscopic image; And a controller configured to calculate a viewing distance value based on the viewer's position information detected by the position detecting module, and to adjust the brightness of the stereoscopic image by controlling the image display module according to the calculated viewing distance value. Can be.
The controller may reduce the luminance of the stereoscopic image when the viewing distance value is less than or equal to the reference value range, and increase the luminance of the stereoscopic image when the viewing distance value is greater than or equal to the reference value range.
The image display module alternately forms a light transmission region and a light blocking region, and transmits the left eye image and the right eye image through the light transmission region, and the controller controls the luminance and the brightness of the stereoscopic image according to the viewing distance value. The aperture ratio of the light transmission region can be adjusted.
The control unit may correct the position of the light transmission area such that the position of the viewer according to the position information of the viewer and the center of the light transmission area are positioned correctly.
According to an aspect of the present invention, there is provided a method of driving a stereoscopic image display device, comprising: an image display module configured to display a stereoscopic image including a left eye image and a right eye image; Detecting location information of a viewer watching a stereoscopic image displayed on the image display module; And calculating a viewing distance value based on the viewer's position information, and controlling the image display module according to the calculated viewing distance value to adjust the brightness of the stereoscopic image.
Adjusting the luminance of the stereoscopic image may reduce the luminance of the stereoscopic image when the viewing distance value is less than or equal to the reference value range, and increase the luminance of the stereoscopic image when the viewing distance value is greater than or equal to the reference value range. .
The driving method of the stereoscopic image display device may include alternately forming a light transmission region and a light blocking region in the image display module to transmit the left eye image and the right eye image through the light transmission region; And adjusting the aperture ratio of the light transmission area according to the viewing distance value.
The driving method of the stereoscopic image display apparatus may further include correcting the position of the light transmission region such that the position of the viewer according to the position information of the viewer and the central portion of the light transmission region are positioned correctly.
The image display module includes a liquid crystal display panel in which the left eye image and the right eye image are displayed separately, and a backlight unit for irradiating light to the liquid crystal display panel, wherein the driving method of the stereoscopic image display apparatus is input. And generating a backlight dimming value for controlling the backlight unit based on data, and adjusting the luminance of the stereoscopic image when the viewing distance value is equal to or less than a reference value range. The dimming value may be reduced to 10% to 20%, and if the viewing distance value is greater than or equal to the reference value range, the backlight dimming value may be increased to 10% to 20%.
According to the above solution, the stereoscopic image display device and its driving method according to the present invention adjust the luminance of the stereoscopic image according to the viewing distance of the viewer, or at the same time adjust the aperture ratio of the light transmission area formed in the image display module. Accordingly, the 3D crosstalk phenomenon generated in the stereoscopic image may be minimized according to the viewing distance of the viewer, and the brightness and image quality of the stereoscopic image may be optimized.
In addition, the stereoscopic image display device and the driving method thereof according to the present invention, the viewing distance of the viewer by matching the aperture ratio of the light transmission area, the brightness of the stereoscopic image, and the position information of the viewer and the position of the light transmission area according to the viewing distance of the viewer Accordingly, the luminance of the stereoscopic image may be optimized to improve the image quality of the stereoscopic image, and the viewer may be provided an accurate stereoscopic image without inconvenience.
1 is a diagram schematically illustrating a general barrier type stereoscopic image display device.
2 is a diagram schematically illustrating a stereoscopic image display device according to a first exemplary embodiment of the present invention.
FIG. 3 is a block diagram schematically illustrating the stereoscopic image display device shown in FIG. 2.
4 is a block diagram schematically illustrating an image display module shown in FIG. 3.
5A to 5C are diagrams for describing aperture ratio of a light transmission area and luminance adjustment of a stereoscopic image according to a viewer's viewing distance according to the present invention.
6 and 7 are views for explaining the position correction of the light transmission region according to the viewing position of the viewer in the present invention.
FIG. 8 is a cross-sectional view for describing the barrier panel illustrated in FIG. 4.
9 is a block diagram schematically illustrating a stereoscopic image display device according to a second embodiment of the present invention.
FIG. 10 is a diagram for describing a viewer's gaze listening area detected by the controller illustrated in FIG. 9.
FIG. 11 is a diagram for describing brightness adjustment of a viewer's gaze listening area shown in FIG. 10.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 2 is a diagram schematically illustrating a stereoscopic image display device according to a first embodiment of the present invention, and FIG. 3 is a block diagram schematically illustrating the stereoscopic image display device shown in FIG. 2.
2 and 3, the stereoscopic
The
The
The
In the stereoscopic image display mode, the
The
The
The
The
As described above, the stereoscopic
4 is a block diagram schematically illustrating an image display module shown in FIG. 3.
4, the
The liquid
The lower substrate is a thin film transistor array substrate, and includes a plurality of pixels (not shown) formed in each of regions intersected by a plurality of gate lines (not shown) and a plurality of data lines (not shown). Each pixel may include a thin film transistor (not shown) connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage. In this case, the common electrode may be formed on the lower substrate according to the driving method of the liquid crystal layer for image display. The lower substrate forms an electric field corresponding to the difference voltage between the data voltage and the common voltage applied to each pixel to adjust the light transmittance of the liquid crystal layer.
The upper substrate is a color filter array substrate, and is configured to include a color filter corresponding to each pixel formed on the lower substrate so as to face the lower substrate with the liquid crystal layer for image display therebetween. In this case, a common electrode to which a common voltage is supplied may be formed on the upper substrate according to the driving method of the image display liquid crystal layer. The upper substrate filters the light incident through the liquid crystal layer for image display with a color filter and emits predetermined color light to the outside to alternately display a predetermined left eye image and a right eye image on the liquid
Polarizing films may be attached to upper and lower surfaces of the liquid
The
The
The gate driving circuit unit generates a gate signal in response to the gate control signal supplied from the
The data driving circuit unit converts the left eye input data and the right eye input data from the
The
The
In detail, the
In the planar image display mode, the
In the stereoscopic image display mode, the
For example, as illustrated in FIG. 5A, the
On the other hand, the
In addition, as illustrated in FIG. 5C, the
As described above, the
In the stereoscopic image display mode, the
For example, as illustrated in FIG. 5A, the
On the other hand, the
In addition, as illustrated in FIG. 5C, the
Meanwhile, the
In the stereoscopic image display mode, the
For example, as shown in FIG. 6A, the viewing position CP according to the viewing position information of the
On the contrary, as shown in FIG. 7A, the viewing position CP according to the viewing position information of the
The
The
The
The plurality of
Each of the plurality of
Each of the plurality of
The above-described plurality of
The
The
The barrier
The upper
Meanwhile, the
The
In detail, in the planar image display mode, the
In the stereoscopic image display mode, the
4 again, the
As such, the
9 is a block diagram schematically illustrating a stereoscopic image display device according to a second embodiment of the present invention.
Referring to FIG. 9, the stereoscopic
First, the
The
The
As illustrated in FIG. 11, the direct
The
Meanwhile, in the stereoscopic image display mode, the
For example, as illustrated in FIG. 5A, the
On the other hand, the local
In addition, as illustrated in FIG. 5C, the
The local
As illustrated in FIG. 11, the local
As such, the
The
Specifically, the
The
As such, the
It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
100: stereoscopic display device 110: video display module
120: position detection module 130: control unit
210: liquid crystal display panel 220: backlight unit
230: panel driver 240: power generation unit
250: timing controller 260: barrier module
270: backlight drive unit
Claims (14)
A position detection module for detecting position information of a viewer watching the stereoscopic image; And
And a controller configured to calculate a viewing distance value based on the viewer's position information detected by the position detecting module, and control the image display module according to the calculated viewing distance value to adjust brightness of the stereoscopic image. Stereoscopic display device characterized in that.
The control unit,
When the viewing distance value is below the reference value range, the brightness of the stereoscopic image is reduced,
And increasing the brightness of the stereoscopic image when the viewing distance value is greater than or equal to the reference value range.
The image display module alternately forms a light transmission region and a light blocking region, and transmits the left eye image and the right eye image through the light transmission region.
And the control unit adjusts the luminance of the stereoscopic image and the aperture ratio of the light transmission area according to the viewing distance value.
And the controller is configured to correct the position of the light transmission area so that the viewer's position according to the viewer's position information and the central portion of the light transmission area are positioned correctly.
The video display module,
A liquid crystal display panel which displays the left eye image and the right eye image separately;
A backlight unit for emitting light to the liquid crystal display panel;
A timing controller configured to generate a backlight dimming value for controlling the backlight unit based on input data and to correct the backlight dimming value according to the viewing distance value;
A barrier module disposed to overlap the liquid crystal display panel to alternately form the light transmission region and the light blocking region for transmitting or blocking the left eye image and the right eye image under the control of the timing controller; And
And a backlight driver configured to drive the backlight unit according to the corrected backlight dimming value supplied from the timing controller.
The timing controller includes:
When the viewing distance value is less than or equal to the reference value range, the backlight dimming value is reduced so that the brightness of the backlight unit is reduced while controlling the barrier module to increase the aperture ratio of the light transmission area.
And when the viewing distance value is greater than or equal to the reference value range, controlling the barrier module to reduce the aperture ratio of the light transmission area and increasing the backlight dimming value to increase the brightness of the backlight unit. Display device.
The timing controller includes:
When the viewing distance value is less than the reference value range, the backlight dimming value is reduced to the range of 10% to 20%,
And a backlight dimming value is increased in a range of 10% to 20% when the viewing distance value is greater than or equal to a reference value range.
The video display module,
A liquid crystal display panel which displays the left eye image and the right eye image separately;
A panel driver for separating and displaying the left eye image and the right eye image on the liquid crystal display panel;
A backlight unit dividing the liquid crystal display panel into a plurality of blocks to irradiate light to each block;
A barrier module disposed to overlap the liquid crystal display panel to alternately form the light transmitting region and the light blocking region for transmitting or blocking the left eye image and the right eye image;
Analyzing input data to be displayed on the liquid crystal display in units of blocks to generate dimming value for each block, and correcting the dimming value for each block according to the viewing distance value, and based on the corrected dimming value for each block. A local dimming controller configured to generate modulated data by modulating input data of the block;
A timing controller supplying the modulation data to the panel driver and controlling the barrier module according to the viewing distance value; And
And a backlight driver configured to individually drive each block of the backlight unit according to the corrected dimming value for each block.
The local dimming control unit detects a viewer's gaze area based on the viewer's position information and the viewing distance value, and detects at least one gaze listening block overlapping the detected gaze area among the plurality of blocks. And dimming value of each block of the gaze-view blocks.
Detecting location information of a viewer watching a stereoscopic image displayed on the image display module; And
Calculating a viewing distance value based on the position information of the viewer, and controlling the image display module according to the calculated viewing distance value to adjust the brightness of the stereoscopic image. Method of driving.
Adjusting the brightness of the stereoscopic image,
When the viewing distance value is below the reference value range, the brightness of the stereoscopic image is reduced,
And driving the brightness of the stereoscopic image when the viewing distance value is greater than or equal to the reference value range.
Alternately forming a light transmission region and a light blocking region in the image display module to transmit the left eye image and the right eye image through the light transmission region; And
And adjusting the aperture ratio of the light transmission area according to the viewing distance value.
And correcting the position of the light transmission region so that the position of the viewer according to the viewer's position information and the central portion of the light transmission region are in the correct position.
The image display module includes a liquid crystal display panel in which the left eye image and the right eye image are displayed separately, and a backlight unit for irradiating light to the liquid crystal display panel.
Generating a backlight dimming value for controlling the backlight unit based on input data input;
Adjusting the brightness of the stereoscopic image,
When the viewing distance value is less than the reference value range, the backlight dimming value is reduced to a range of 10% to 20%,
And if the viewing distance value is greater than or equal to the reference value range, increasing a backlight dimming value in a range of 10% to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110131809A KR20130065091A (en) | 2011-12-09 | 2011-12-09 | Stereoscopic image display device and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110131809A KR20130065091A (en) | 2011-12-09 | 2011-12-09 | Stereoscopic image display device and driving method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020180067261A Division KR101930373B1 (en) | 2018-06-12 | 2018-06-12 | Stereoscopic image display device and driving method thereof |
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| KR20130065091A true KR20130065091A (en) | 2013-06-19 |
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| KR1020110131809A KR20130065091A (en) | 2011-12-09 | 2011-12-09 | Stereoscopic image display device and driving method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101460041B1 (en) * | 2013-07-18 | 2014-11-10 | 포항공과대학교 산학협력단 | The backlight dimming control method using the viewing distance. |
| KR20150078653A (en) * | 2013-12-31 | 2015-07-08 | 엘지디스플레이 주식회사 | Method of driving stereopsis image display device |
| KR20150078166A (en) * | 2013-12-30 | 2015-07-08 | 엘지디스플레이 주식회사 | 3-dimension image display device and driving method thereof |
| US9858869B2 (en) | 2015-03-31 | 2018-01-02 | Samsung Display Co., Ltd. | Display apparatus and method of driving the same |
-
2011
- 2011-12-09 KR KR1020110131809A patent/KR20130065091A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101460041B1 (en) * | 2013-07-18 | 2014-11-10 | 포항공과대학교 산학협력단 | The backlight dimming control method using the viewing distance. |
| KR20150078166A (en) * | 2013-12-30 | 2015-07-08 | 엘지디스플레이 주식회사 | 3-dimension image display device and driving method thereof |
| KR20150078653A (en) * | 2013-12-31 | 2015-07-08 | 엘지디스플레이 주식회사 | Method of driving stereopsis image display device |
| US9858869B2 (en) | 2015-03-31 | 2018-01-02 | Samsung Display Co., Ltd. | Display apparatus and method of driving the same |
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