CN101017251A - Three-dimensional auto-stereoscopic display device based on light polarizing parallax strip and grid screen - Google Patents
Three-dimensional auto-stereoscopic display device based on light polarizing parallax strip and grid screen Download PDFInfo
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Abstract
本发明公开了一种基于偏光视差条栅屏的全分辨率3D自由立体显示装置及其实现方法。该装置由平面显示屏、偏振开关屏和偏光视差条栅屏构成，其中偏光视差条栅屏包含部分半波屏、漫射屏和偏光条栅屏。漫射屏只在垂直方向具有漫射特性；偏光条栅屏是由两种偏振方向垂直的条状偏光片相间排列构成。平面显示屏在偏振开关屏的“开”状态时显示一半分辨率的左右眼视差图，在偏振开关屏的“关”状态显示另一半分辨率的左右眼视差图，它们经偏光视差条栅屏后都形成左右眼视差图像的视点对。“关”和“开”这两种状态的切换频率高于人的视觉暂留对应的频率，如120Hz时，观看者实际“同时”看到上述两种状态的3D立体图像，从而使观众裸眼自由看到与相应2D显示一样的全分辨率的3D立体显示图像。本发明的实现方法兼顾了图像的时间分割及其合成、空间分割及其合成。
The invention discloses a full-resolution 3D autostereoscopic display device based on a polarizing parallax bar grid screen and a realization method thereof. The device is composed of a flat display screen, a polarization switch screen and a polarized parallax bar screen, wherein the polarized parallax bar screen includes a partial half-wave screen, a diffusion screen and a polarized bar bar screen. The diffuser screen only has diffuse characteristics in the vertical direction; the polarized grid screen is composed of two strip polarizers with vertical polarization directions arranged alternately. When the polarization switch screen is in the "on" state, the flat display screen displays the left and right eye parallax maps with half the resolution, and in the "off" state of the polarization switch screen, it displays the left and right eye parallax maps with the other half resolution, and they pass through the polarized parallax bar screen After that, the viewpoint pairs of left and right eye parallax images are formed. The switching frequency of the two states of "off" and "on" is higher than the frequency corresponding to the persistence of vision of people. For example, at 120Hz, the viewer actually sees the 3D stereoscopic images of the above two states "simultaneously", so that the audience's naked eyes Freedom to see 3D stereoscopic display images in full resolution just like the corresponding 2D display. The realization method of the present invention takes into account the time division and its synthesis, the space division and its synthesis of the image.
Description
一、技术领域1. Technical field
本发明涉及三维(3D)立体显示技术领域，更具体地说，本发明涉及3D裸眼自由立体显示技术领域。The present invention relates to the technical field of three-dimensional (3D) stereoscopic display, and more specifically, the present invention relates to the technical field of 3D autostereoscopic display with naked eyes.
二、背景技术2. Background technology
实现3D显示是人类长期的梦想。随着3D裸眼自由立体显示技术的发展，这个梦想逐步在实现。其中基于双目视差和光栅分光原理的狭缝光栅式立体显示器是一种重要的裸眼3D自由立体显示器，它由二维(2D)平面显示器上加装狭缝光栅而成。2D平面显示器包括常规液晶显示器LCD、等离子显示器PDP、场发射显示器FED、有机电致发光显示器OLED等。狭缝光栅式立体显示器具有很好的立体显示特性，但由于左右眼视差图是相间显示在同一个显示屏上，导致它的固有缺陷：分辨率最多只是相应2D显示的一半。这对于当今追求高分辨率显示潮流来讲极为不利，急待改进。Realizing 3D display is a long-term dream of mankind. With the development of 3D naked-eye autostereoscopic display technology, this dream is gradually being realized. Wherein the slit grating type stereoscopic display based on binocular parallax and grating light splitting principle is an important naked-eye 3D autostereoscopic display, which is formed by adding a slit grating on a two-dimensional (2D) flat display. 2D flat panel displays include conventional liquid crystal display LCD, plasma display PDP, field emission display FED, organic electroluminescent display OLED, etc. The slit grating stereoscopic display has good stereoscopic display characteristics, but because the left and right eye disparity images are displayed alternately on the same display screen, it has an inherent defect: the resolution is at most half of the corresponding 2D display. This is extremely unfavorable for today's pursuit of high-resolution display trends, and urgently needs to be improved.
三、发明内容3. Contents of the invention
为此，本发明提出一种基于偏光视差条栅屏的全分辨率3D自由立体显示装置及其实现方法。如附图1所示，该装置由平面显示屏、偏振开关屏和偏光视差条栅屏构成，其中偏光视差条栅屏包含部分半波屏、漫射屏和偏光条栅屏。附图1中的部分半波屏的黑色部分代表有条状半波片，白色部分代表没有条状半波片；漫射屏只在垂直方向具有漫射特性；偏光条栅屏是由两种偏振方向垂直的条状偏光片相间排列构成。该发明装置突出的特征是：3D立体显示的分辨率与相应2D显示一样，没有降低。To this end, the present invention proposes a full-resolution 3D autostereoscopic display device based on a polarized parallax bar screen and an implementation method thereof. As shown in Figure 1, the device consists of a flat screen, a polarization switch screen and a polarized parallax bar screen, wherein the polarized parallax bar screen includes a partial half-wave screen, a diffuser screen and a polarized bar bar screen. The black part of the part of the half-wave screen in Figure 1 represents that there is a striped half-wave plate, and the white part represents that there is no striped half-wave plate; the diffusing screen only has diffusion characteristics in the vertical direction; the polarizing bar screen is composed of two Strip polarizers with vertical polarization directions are arranged alternately. The outstanding feature of the device of the invention is that the resolution of the 3D stereoscopic display is the same as that of the corresponding 2D display, without being reduced.
本发明装置实现方法的原理如附图2所示，图中的箭头表示光的偏振方向，虚线是为了分析问题方便，将平面显示屏在偏振开关屏的“开”和“关”两种显示状态画在了同一图上，虚线之上为偏振开关屏“关”状态，虚线之下为偏振开关屏“开”状态。平面显示屏在偏振开关屏的“开”和“关”状态所显示的图像的偏振方向相互垂直。The principle of the realization method of the device of the present invention is as shown in accompanying
附图2虚线之上所示的偏振开关屏处于“关”状态时，左右眼视差图的一半像素在平面显示屏上相间显示，如附图3所示的虚线之上的情形。由于左右眼视差图的图像光的偏振方向相互垂直，经偏光视差条栅屏后的出射光分开并相聚在不同位置，形成左右眼视差图像的视点对，如R1、L1，当它们相距约65mm时，即人双眼瞳孔的间距，观看者在此就可分别看到左右眼图像，从而在大脑中获得3D立体效果。图中的R2、L2和R3、L3是另外两个视差图像的视点对，其两边还有更多视差图像的视点对，即该系统可供多人观看。此时的3D立体显示的分辨率只有相应2D显示的一半。When the polarization switch screen shown above the dotted line in Figure 2 is in the "OFF" state, half of the pixels of the disparity map for the left and right eyes are alternately displayed on the flat screen, as shown in the situation above the dotted line in Figure 3 . Since the polarization directions of the image light of the left and right eye parallax images are perpendicular to each other, the outgoing light after passing through the polarizing parallax bar screen is separated and gathered at different positions to form a pair of viewpoints of the left and right eye parallax images, such as R1 and L1, when they are about 65mm apart When is the distance between the pupils of the human eyes, the viewer can see the images of the left and right eyes respectively, thereby obtaining a 3D stereoscopic effect in the brain. R2, L2 and R3, L3 in the figure are viewpoint pairs of two other parallax images, and there are more viewpoint pairs of parallax images on both sides, that is, the system can be viewed by multiple people. At this time, the resolution of the 3D stereoscopic display is only half of that of the corresponding 2D display.
同理，附图2虚线之下所示的偏振开关屏“开”状态时，左右眼视差图的另一半像素在平面显示屏上相间显示，如附图3所示的虚线之下的情形，由于左右眼视差图的排列与前一种不同，再加之图像光的偏振特性与前一种的不同，经偏光视差条栅屏后，左右眼视差图的出射光刚好能形成与前一种一样的左右眼视差图像的视点对R1、L1，R2、L2和R3、L3等，这样观看者在此就可分别看到左右眼视差图的另一半像素，从而在大脑中获得3D立体效果。此时的3D立体显示的分辨率也只有相应2D显示的一半。Similarly, when the polarization switch screen shown under the dotted line in Figure 2 is in the "on" state, the other half of the pixels of the disparity map for the left and right eyes are displayed alternately on the flat screen, as shown in the situation under the dotted line in Figure 3, Since the arrangement of the left and right eye parallax maps is different from the previous one, and the polarization characteristics of the image light are different from the previous one, after passing through the polarized parallax bar screen, the outgoing light of the left and right eye parallax maps can just form the same shape as the previous one. The viewpoint pairs of the left and right eye parallax images are R1, L1, R2, L2 and R3, L3, etc., so that the viewer can see the other half of the pixels of the left and right eye parallax images respectively, thereby obtaining a 3D stereoscopic effect in the brain. At this time, the resolution of the 3D stereoscopic display is only half of that of the corresponding 2D display.
“关”和“开”这两种状态的切换频率高于人的视觉暂留对应的频率，如50-60Hz，最好120Hz时，观看者实际“同时”看到上述两种状态的3D立体图像，即两种状态合成的全分辨率的3D立体图像，与相应2D显示的分辨率一样了。The switching frequency of the two states of "off" and "on" is higher than the corresponding frequency of human persistence of vision, such as 50-60Hz, preferably 120Hz, the viewer actually sees the 3D stereoscopic images of the above two states "simultaneously" The image, that is, the full-resolution 3D stereoscopic image synthesized from the two states, has the same resolution as the corresponding 2D display.
本发明的实现方法兼顾了图像的时间分割及其合成、空间分割及其合成，因而实现了图像全分辨率的3D立体显示效果。The implementation method of the present invention takes into account the time division and synthesis of the image, and the space division and synthesis thereof, thus realizing the 3D stereoscopic display effect of the full resolution of the image.
四、附图的说明4. Description of the drawings
附图1为本发明的基于偏光视差条栅屏的全分辨率3D自由立体显示装置。Accompanying
附图2为本发明的基于偏光视差条栅屏的全分辨率3D自由立体显示装置的实现原理。Accompanying
附图3为本发明的基于偏光视差条栅屏的全分辨率3D自由立体显示装置的左右眼视差图的像素排列。Accompanying
上述各附图中的图示标号为：The pictorial symbols in the above-mentioned drawings are:
1平面显示屏，2偏振开关屏，3偏光视差条栅屏，4部分半波屏，5漫射屏，6偏光条栅屏，7条状半波片，8水平偏光片，9垂直偏光片，10左眼视差图的像素，11右眼视差图的像素。1 flat screen, 2 polarization switching screen, 3 polarizing parallax bar screen, 4 part half-wave screen, 5 diffuser screen, 6 polarizing bar screen, 7 bar half-wave film, 8 horizontal polarizer, 9 vertical polarizer , 10 pixels of the disparity map for the left eye, and 11 pixels of the disparity map for the right eye.
应该理解上述附图只是示意性的，并没有按比例绘制。It should be understood that the above drawings are only schematic and not drawn to scale.
五、具体实施方式5. Specific implementation
下面详细说明本发明提出的一种基于偏光视差条栅屏的全分辨率3D自由立体显示装置的实施例，对本发明进行进一步的具体描述。有必要在此指出的是，以下实施例只用于本发明做进一步的说明，不能理解为对本发明保护范围的限制，该领域技术熟练人员根据上述本发明内容对本发明做出一些非本质的改进和调整，仍属于本发明的保护范围。An embodiment of a full-resolution 3D autostereoscopic display device based on a polarizing parallax bar screen proposed by the present invention will be described in detail below to further describe the present invention in detail. It is necessary to point out that the following examples are only used for further description of the present invention, and cannot be interpreted as limiting the protection scope of the present invention, and those skilled in the art make some non-essential improvements to the present invention according to the above-mentioned content of the present invention And adjustments still belong to the protection scope of the present invention.
根据本发明，制作一个2.2英寸的3D自由立体显示屏。采用2.2英寸176×220分辨率的TFT(场薄膜晶体管)液晶显示屏，以120Hz的频率分时显示左右眼视差图，偏振开关屏采用OCB(光控双折射)模式的液晶，以利于快速切换。这个3D自由立体显示屏的3D显示图像分辨率可达176×220。According to the present invention, a 2.2-inch 3D autostereoscopic display screen is produced. A 2.2-inch 176×220 resolution TFT (field thin-film transistor) liquid crystal display is used to display the left and right eye parallax images at a frequency of 120Hz. The polarization switch screen adopts OCB (optical control birefringence) mode liquid crystals to facilitate fast switching . The 3D display image resolution of this 3D autostereoscopic display can reach 176×220.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900886A (en) * | 2009-05-29 | 2010-12-01 | 索尼公司 | Three-dimensional display and stereo display method |
| CN101546043B (en) * | 2008-03-26 | 2011-06-08 | 陈意辉 | Plane stereo hybrid compatible parallax micro-mirror panel and rear-projection free stereo video display |
| CN102122077A (en) * | 2011-03-23 | 2011-07-13 | 四川大学 | Dual-slit grating liquid crystal free three-dimensional display |
| CN102682674A (en) * | 2012-05-28 | 2012-09-19 | 北京理工大学 | High-brightness naked-eye three-dimensional (3D) display screen based on organic light-emitting diode (OLED)-LED |
| CN103247065A (en) * | 2013-04-26 | 2013-08-14 | 北京大学 | Three-dimensional naked eye video generating method |
| CN103841395A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Composite image displaying method and device |
| WO2017071533A1 (en) * | 2015-10-30 | 2017-05-04 | 成都工业学院 | Slit grating auto-stereoscopic display device and method based on dual display screen |
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2007
- 2007-02-02 CN CNA2007100483825A patent/CN101017251A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546043B (en) * | 2008-03-26 | 2011-06-08 | 陈意辉 | Plane stereo hybrid compatible parallax micro-mirror panel and rear-projection free stereo video display |
| CN101900886A (en) * | 2009-05-29 | 2010-12-01 | 索尼公司 | Three-dimensional display and stereo display method |
| CN101900886B (en) * | 2009-05-29 | 2012-10-03 | 索尼公司 | Stereoscopic display and stereoscopic display method |
| CN102122077A (en) * | 2011-03-23 | 2011-07-13 | 四川大学 | Dual-slit grating liquid crystal free three-dimensional display |
| CN102122077B (en) * | 2011-03-23 | 2012-05-23 | 四川大学 | Dual-slit grating liquid crystal free three-dimensional display |
| CN102682674A (en) * | 2012-05-28 | 2012-09-19 | 北京理工大学 | High-brightness naked-eye three-dimensional (3D) display screen based on organic light-emitting diode (OLED)-LED |
| CN102682674B (en) * | 2012-05-28 | 2014-11-26 | 北京理工大学 | High-brightness naked-eye three-dimensional (3D) display screen based on organic light-emitting diode (OLED)-LED |
| CN103841395A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Composite image displaying method and device |
| CN103841395B (en) * | 2012-11-27 | 2016-10-05 | 联想(北京)有限公司 | Composograph display packing and equipment |
| CN103247065A (en) * | 2013-04-26 | 2013-08-14 | 北京大学 | Three-dimensional naked eye video generating method |
| WO2017071533A1 (en) * | 2015-10-30 | 2017-05-04 | 成都工业学院 | Slit grating auto-stereoscopic display device and method based on dual display screen |
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