TW496967B - Device and method of externally attached bare-eyed three-dimensional displaying - Google Patents

Abstract

The present invention relates to a device and method of externally attached bare-eyed three-dimensional displaying that is externally attached to an existing 2D display (e.g., CRT, LCD, etc.) so as to display a three-dimensional image on the display device. The device of present invention comprises a pair of polarizers with 90-degree phase difference, a pair of differential phase plate of alternatively disposed half wave plate and zero wave plate, a pair of fixed substrate, and a phase modulation layer. With such device, the present invention can then display two image states provided in the three-dimensional image generated by the 2D display each at different time, that is, one image can be observed by left eye but not right eye at a certain time and such image can be observed by right eye but not the left eye at another time with the separation of 6.5 centimeters between right and left eyes, while through image fusion of both eyes, the observer can sense a three-dimensional visual image of certain depth.

Description

496967 V. Description of the invention (1) [Application field of the invention] The present invention is an external naked-eye stereoscopic display device and method thereof, which is externally attached to an existing 2D display (such as CRT, LCD, etc.) so that it can display 3D stereo Image display device and method. [Background of the Invention] ^ 3D stereoscopic imaging technology has been developed for decades. The principle of generating stereo image signals is to use the stereo image produced by the human binocular vision (parallax generated by the two eyes forms a stereo image in the brain) ^ However, because the current display is a flat display, not a stereo The imaging method is produced, so 'in order to see the stereoscopic image, it must still be achieved through specific means. Sigma users see stereo image signals, and from the technical point of view, they can be divided into binocular parallax method, hologram, volumetrie, and so on. The binocular parallax method can be further divided into a stereo imaging method that requires special glasses (Stere0SC0P1C) and a naked-eye stereo imaging method that does not require special glasses, Uiitoster ^ eos (CDPlc). The present invention is an external type using the binocular parallax method Glasses-free stereo display device. These two display methods can divide the above-mentioned three-dimensional image signal into two parts. The P-knife, that is, the part that the left eye can see and the right eye can see, converts the image. Polaroid film; ==, three-dimensional moving day or from 2. Shadow is a more mature product. The development of technology is relatively early. At present, there is also a mutually orthogonal polarized light pound Γ Γ 丨 丄 丄 士 士; good t ^ good rules are two, as long as the above left and right 1 ° Dan ... Xing horizontal polarized), because the two right #Photo 钐Camera ’s image output is polarized '(horizontal polarized), you can make the left and right with a polarizer

Page 4 496967 V. Description of the invention (2) Two eyes can see different images respectively to produce a stereo image with depth effect. Although this technology developed relatively early, it is quite inconvenient because it must be worn with 3D stereo glasses. Naked-eye stereo (aut ocstere ocsc pic) 3D imaging method, try to install the above polarizing device directly outside the display device, that is, a way to automatically see different images for both eyes and let the user see To 3D stereo images, so users do not need to wear stereo glasses. However, due to technical limitations, the display device must be set for the user's eyes and the distance between the user's eyes, and the user cannot a a ^ watch once the mouth has been opened. This type of automatic stand-up s 2 hangs one person and allows one user to enter Jin ^ 1 n. There are two ways to set up the head. One is to buy a brand new 3D stereo display device f & 9 ... m. It can be converted into a two-dimensional display (such as a U-Ding or LCD), and the off-the-shelf 2D display can be modified and repeatedly checked. gaze. ',,, and more complicated and expensive systems, it is not easy to get consumers' green rules: take a different f strategy: its attempt to focus on the way to enjoy 3D stereoscopic image = by directly hanging outside the display can view patents, for the above The disadvantages of the automatic 2Γ US Patent No. 5,973, 831, which is more convenient and cheaper, allow the consumer to disclose the technology and allow the technology to be updated. This patented three-dimensional image, and 'only 用, can use the existing 2D display to show 3d accurate correction, you can watch 3D: J: like hanging on the display without the need to 496967 izing the left and right perception layer through the four lights The transparent three-dimensional can be applied as a partial technique to indicate the tedious procedure of & no matter how strong it is. And whether the polarities are uniform? There is no characteristic light polarized aurora before this exercise. 5. Description of the invention (3) This exercise has two polarized layers of polarized layers, which in turn produces this special converter 1 1 package 16 and two The sheet-biased display 12 is seen differently when converted to circular polarization. This device displays the device's own wavelength plate. This patented technology does not need to be cumbersome and does not require the user to have many advantages compared to the past with or without a polarized light source to adjust. However, it is difficult 'so the eye output has a polarized 13 to make the line-knowledge technology clear. Let the depth of the device architecture include a quarter of the time-out enveloped image. Non-quasipolar light source. A possible stereo quasi-procedural adjustment is not required, and this is only applicable when the production of finished products is required. Turned into a round-type external 3D image converter, which uses layer) to modulate the two polar eyes on the same day τΓ over time to see different stereoscopic images and stereo visual effects. Please refer to FIG. 1. In addition, the 3D image is a wave plate 1 3 ′, and two polarizing layers 丄 4 and 15 are liquid crystal layers. After outputting a 2 D wavelength wave plate with polarized light, the displayed signals are turned to control the polar layers 1 4 and 16 so that two eyes can have the same number, and a painful device for direct light showing a stereo image is achieved. Such as cr τ. If, such as LCD, you do n’t need a quarter of the external plug-in for image imaging, and stereo glasses can be used at any time. For example, off-the-shelf 2D displays are one way. This 3D display method without glasses and taken off is similar to the 3D display method. The front 2D display can target whether the light source is a long wave plate or not regardless of the output light. Disadvantages and Technical Difficulties Figure 1 ’when 2 D display 1 2 plus a quarter-wavelength wave plate polarized light, when circularly polarized light passes through the polar layer

Page 6 496967 V. Description of Invention (4)-Plutonium will lose at least half of its energy. Because the polarized poles described in this patent are similar to micro polarizers, they have the same disadvantages, and are described below. : Consider the second figure, the process of the micro-polarized plate. In step 21, use etching = first process the polarized plate with the required period. Step 23 combines two micro-polarized plates with different directions. 2 ί Micro-polarized plates. This approach makes thickness a problem per degree. The polarizing plate was doubled in the process of twice the thickness of the process. In addition, technically, the problem occurred at step 9 q, u, this problem is still a problem. There are alignment elements. And, in the case of non-collimated light (& bm important factor of commercialization of the tearing method bm) ^ „T ^,% ^ ^; The value of the application should still be low (approximately about 10). Λ, the main two use micro-polarized plates, and the comparison [purpose and summary of the invention] 40% of the phenomenon of residual image. The present invention provides a stereoscopic display device and a method thereof. Second, the present invention provides a plug-in nakedness, thickness, contrast value, and light leakage. It is feasible, and in order to achieve the above objective in light transmission, the present J Ming: there are considerable improvements. A device comprising at least a pair of two-sided externally mounted naked-eye stereoscopic display pairs containing a half wavelength of the micro = ^ bias # plate and one of the inner layers of the polar pole I. The liquid gg contained in the glass substrate is a plate, and Inner layer of micro phase difference plate, long time I 〇

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V. Description of the invention (5) Using this polar phase, @ ^ n contains two different domains transmitted by the 2D display device. # Aurora is incident to the angle containing ° ,,), which becomes the inflammation of the 2 = 3 prosthetic image and liquid crystal. After the micro-phase of 1 micro-wavelength is incident on the human side, after two minutes, the phase difference plate and the broken glass substrate light :: the direction is deflected by 90 degrees, the incidence of the micro-phase difference shuttle keeps the original polar direction, this :: of- The incident light with a wavelength can be different from the polarity of the first piece: =! Part of the incident light that turns around, so that this device can be used to make a 2D display of the heart's younger polarizer. Because of the different types of image signals in a single 3D image, you can use the distance between the two eyes, and you can sing about it. You can see the image and the other eye: JJ ::, (Such as the left eye) The modulation of time can be performed at the next time ^ = to: wide ^ to the first image and the other eye (such as the left eye) is beneficial ^ ^ 1 eye (such as the right eye) sees the time modulation in the visual temporal Stay within the time; that is, two = stereoscopic vision of invention. Ρ Τ σ is a big sense ^ I feel that the combination of the deep description and the illustration is as follows for the detailed embodiment of the present invention: [Detailed description of the invention] Please refer to 3A, 3 because P light cannot penetrate s 3D stereo of the present invention The principle of imaging is as follows. In Figure 3A, when the light advances from left to right, because ρ cannot pass through =, the right eye will see the image, and the left eye will not see any image. When there is a half-wave phase difference plate in the polarizing layers, the P light can only penetrate the s layer. So the opposite is seen in the left and right eyes in 3b \. This method uses time to modulate the phase difference

496967

Page 9 V. Description of the invention (7) Below the modulation time-a period 'is shown in the second figure. When the light source of the 2D display 12 (regardless of whether it is polarized light) is incident on the polarizing plate 402 f: 4 the incident light is completely incident into the micro phase difference plate 40 3 and the liquid crystal 404 and the micro phase is the interlayer 411 of the plate 405 among. The incident light passing through this interlayer 411 has a difference of two: one-half of the wavelengths of 407 and 4.9, which are polarized again, the most; as for the zero-wavelength and 41 passing through the micro retardation plate. The part:-:: 二:, the direction is different from the polar plate 40 6, so, the non-bias: becomes the part that can not be seen as shown in Figure 3A, 3B. So the polar plate day. : Control to control two micro phase difference plates, you can reach Figure 3;

Stereoscopic image effect. The two examples of 3D r display ΪΓ shown in the M picture, tf refer to Figure 5, the structural diagram of the external naked-eye standing clothes' from the ordinary liquid crystal display screen can be changed outside the glass substrate 51 on both sides of the day 404, At 405. In addition to the micro-phase difference plates 403 and 405, the phase difference is faint and different to the polar plates 402 and 406. Two sets of polarized squares on the blade [Effects of the invention] The present invention is a plug-in naked-eye stereoscopic display difference plate to achieve the 2D display capable of displaying 3D stand-in ginseng: using the following micro-phase effect It has 1 · It is cheap, easy to use, and can be directly used without having to fight for foreign affairs, "and * you need to admire that there is an instrument system 2. Micro-phase phase difference plate (micr〇_retard temple's .. ,, .. (m1Cr〇-P〇larizer) technology specific technology than the micro-polar plate 496967 V. Description of the invention (8) 3. The micro-phase difference plate can achieve cheap and environmentally friendly effects. 4. The application of the technology of the present invention, whether in The structure of the 2D display with or without polarized output light is the same. 5. When the technology of the present invention is applied to a 2D display with output or polarized light, the light transmittance is comparable to the conventional technology (US patent No. 5, 9 7 3, 8 3 1) More than 6 times. 6. The thickness of the micro retardation plate is reduced by about 200 mm (see Figure 4), and there is no light leakage. 7. Using a micro phase difference plate, the contrast value is about 400, compared with the conventional technology The comparison value is 10, which is much higher, and there is relatively little afterimage phenomenon. Although the present invention is disclosed above with the foregoing preferred embodiments, it is not intended to limit the present invention. Any person skilled in the relevant arts will not depart from this. Within the spirit and scope of the invention, some modifications and retouching can be made, so the scope of patent protection of the present invention must be defined by the scope of the patent application attached to this specification.

Page 11 496967 Brief description of the diagram. Figure 1 is a combination diagram of the external 3D image converter; Figure 2 is the manufacturing steps of the micropolar plate; Figure 3A is the right eye view; Figure 3B is the second half A left-eye view after wavelength modulation; FIG. 4A is a schematic diagram I of a plug-in stereoscopic display device according to the present invention; FIG. 4B is a schematic diagram II of a plug-in stereoscopic display device according to the present invention; and FIG. Structure diagram of an external stereo display device. [Illustration of Symbols] 11 ............... External 3D Image Converter _ 12 ......... 2D Display 13 .. ............. quarter wave plate 14 ............... polar layer 15 ......... ... Liquid crystal layer 16 ............... Polar layer-Step 2 1 ......... First by etching Step 2 2 ............... filling the place that was originally etched ^ step 2 3 ............ ... combining two micro polarized plates of different directions 31 ............... right eye 32 ............... left Eyes 33 ......... The present invention is a plug-in stereoscopic display device 3 4 ......... p polar state 35. .............. s polar state 36 .................. half-wavelength modulation

Page 496 967 Brief description of the diagram 401 ......... The plug-in stereoscopic display device 4 0 2 of the present invention ... Polarity plate 4 0 3 ............... Micro phase difference plate 4 0 4 ............... LCD 4 0 5 ... ............ Micro phase difference plate-4 0 6 ............... Polar plate 4 0 7 ......... ...... Micro-phase phase difference plate wavelength modulation block 4 0 ............... Micro-phase phase difference plate wavelength modulation block 4 0 9 ....... ........ Micro-phase phase difference plate wavelength modulation block 410 ............... Micro-phase phase difference plate wavelength modulation block 411 ........ ....... Interlayer 51 formed by two micro retardation plates and liquid crystal ............... glass substrate 5 2 ............ ... no phase difference 53 ......... half-wavelength phase difference

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Claims (1)

^ 6967 Murakami phase contrast stereoscopic display device of the naked-eye micro-phase indicator, at least includes a "difference plate" for controlling 3D stereoscopic images: meaning "① Besun's display substrate is sandwiched between the pair of micro-phases, such as, , &Amp; not vice versa, the phase of the optical phase of the bow, f. MW .1, ^; The component that sets the optical phase is sandwiched between the pair of transparent fixed range controlled optical phase layer (LC). The naked eyes are respectively placed in the polarized aurora of the pair of micro-phase phase difference plates. The first item of the external-type naked-eye stereoscopic display phase difference plate is 1/2 wavelength and 0-wavelength phase. The component for setting the optical phase of the naked-eye stereoscopic display device is a phase-shiftable naked-eye stereoscopic display device board capable of using a photo-electric six 'phase modulation element. The phase difference of the first-phase naked-eye stereoscopic display device panel is ninety degrees. Then, the incident light is converted into one by the brother ’s polarizer, using eight P one ...— 丨 / person ~ one, the blade center is changed to the long-wavelength zero wavelength; brother: the time point remains unchanged. Polarized aurora pass, eye difference plate with The distance between the glass substrate and the interlayer of the liquid crystal 496967 6. The portion of the scope of patent application that passes through one half of the wavelength of the micro phase difference plate can be passed through the second polarizer after being deflected by ninety; and the half of the wavelength of the pair of micro phase difference plates and The zero-wavelength portion is changed to a zero-wavelength and a half-wavelength at the same time at the second time. The incident polarized light passes through the pair of micro retardation plates, the pair of glass substrates, and the cool layer portion of the liquid crystal, and passes through the micro- After the half-wavelength portion of the phase difference plate is deflected by 90 degrees, it can pass through the second polarizer. 6. For the stereoscopic image control method of the plug-in naked-eye stereoscopic display device according to item 5 of the scope of patent application, the left eye can see at the first time, and the right eye cannot see. 7. For a stereoscopic image control method of a plug-in naked-eye stereoscopic display device according to item 5 of the scope of patent application, in which the right eye can see and the left eye cannot see at the second time point. 8. For the stereoscopic image control method of the plug-in naked-eye stereoscopic display device according to item 5 of the scope of patent application, the right eye can see at the first time, and the left eye cannot see. 9. For a stereoscopic image control method of a plug-in naked-eye stereoscopic display device according to item 5 of the scope of patent application, in which the left eye can see and the right eye cannot see at the second time point. Page 15