lcd module parallax made in china

The Parallax Serial LCDs (liquid crystal displays) can be easily connected to and controlled by a microcontroller using a simple serial protocol sent from a single I/O pin. The LCD displays provide basic text wrapping so that your text looks correct on the display. Full control over all of their advanced LCD features allows you to move the cursor anywhere on the display with a single instruction and turn the display on and off in any configuration. They support visible ASCII characters Dec 32-127). In addition, you may define up to eight of your own custom characters to display anywhere on the LCD. An onboard piezospeaker provides audible output, with full control over tone note, scale and duration using ASCII characters Dec 208–232.

The LCDs currently for sale are updated to Revision F. Basic functionality remains the same, but power requirements and the layout of the backpack have changed. Please see the documentation for information on your model.

This device can be connected to a PC serial port using a MAX232 line driver. The circuit isn’t supported by Parallax, but it’s possible to make this connection with a few extra parts.

This 2×16 character LCD Module with BLUE Backlight uses an I2C interface to communicate with the host microcontroller. This budget-conscious LCD is used on projects requiring the display of text, data, or ASCII characters of all types. Connect to Vcc, Gnd, SDA (serial data line), and SCL (serial clock line). This is a 5VDC device and will be found on the I2C bus at address 0x27 / 0x3F.

In light field display methods, it is empirically known that 3D images with a favourable motion parallax can be obtained by setting angle interval of light rays to less than 1°

Displayed 3D images. (a), Displayed 3D images of a resolution chart. A resolution limit of 2.10 lines/mm, where folding distortion occurred, could be displayed. Even in the depth range of ±200 mm, resolution characteristics did not decrease significantly. This result show that viewers can observe 3D images with wide depth ranges. (b), 3D image of CG observed from different viewpoints. Motion parallax was confirmed by the change in the positional relation between the heart and blood vessels. The viewing angle is 35.1° in the horizontal direction and 4.7° in the vertical direction, and simultaneous viewing by multiple viewers is possible. (c), Projected images of reproduced light rays on the diffuser film. When the diffuser film was set at 30 mm and 100 mm in front of the 3D screen, the pink mascot character and blue rabbit, respectively, were projected clearly. This result shows that an optical image of objects can be reconstructed with Aktina Vision. Photo credits: Hayato Watanabe.

Next, Fig. 4b illustrates a 3D image observed from different viewpoints when displaying 3D images of computer graphics (CGs). The occurrence of motion parallax in both the horizontal and vertical directions according to the observation position was confirmed by the change in the positional relation, such as between the heart and blood vessels. The side of the heart could be viewed while moving. Additionally, the front and rear positional relations could be recognised by the viewer in any posture because binocular parallax was also obtained when viewers leaned their heads. The viewing angle was 35.1° in the horizontal direction and 4.7° in the vertical direction, and simultaneous viewing by multiple viewers was possible. A video of the displayed 3D image is provided in the Supplementary Information.

本公开涉及3D显示技术领域，特别是涉及一种视差挡板及显示装置。The present disclosure relates to the field of 3D display technologies, and in particular, to a parallax barrier and a display device.

目前3D显示逐渐成为了市场标配。其中，裸眼3D显示技术成为了主流。在裸眼3D技术中主要有视差挡板法、透镜法以及指向性背光法等，但考虑到LCD工艺兼容性及成本问题，视差挡板法是目前较为通用的方法。At present, 3D display has gradually become the market standard. Among them, naked-eye 3D display technology has become the mainstream. In the naked eye 3D technology, there are mainly parallax barrier method, lens method and directional backlight method. However, considering the compatibility and cost of LCD process, the parallax barrier method is a relatively common method.

参见图1所示，视差挡板20′即为狭缝光栅，包括不透光条纹21′和位于不透光条纹21′之间的透光条纹22′，透光条纹22′对应狭缝光栅的狭缝，所述狭缝通常为等宽且被等间距设置。一般常用的狭缝光栅是通过在玻璃片上刻出大量平行刻痕制成，刻痕为不透光条纹21′，不透光条纹21′之间的光滑玻璃片部分可以透光，形成透光条纹22′，即狭缝。狭缝光栅的狭缝22′的数量很大，一般每毫米几十至几千条，精制的狭缝光栅，在1cm宽度内刻有几千条乃至上万条刻痕21′。Referring to FIG. 1, the parallax barrier 20" is a slit grating, and includes an opaque stripe 21" and a light-transmitting stripe 22" between the opaque stripe 21". The light-transmitting stripe 22" corresponds to the slit grating. The slits are generally of equal width and are equally spaced. The commonly used slit grating is made by engraving a large number of parallel indentations on the glass sheet, the indentation is the opaque strip 21", and the smooth glass sheet portion between the opaque strips 21" can transmit light to form light transmission. Stripes 22", ie slits. The number of slits 22" of the slit grating is large, generally several tens to several thousands per millimeter, and the refined slit grating is engraved with thousands or even tens of thousands of scores 21" in a width of 1 cm.

利用视差挡板20′实现3D显示的具体原理为：显示面板10′上的像素被通过视差挡板20′上的透光条纹22′传播到观察点，从图1中可以看到，观察点处的观察者的左眼11′和右眼12′所能够观察到的在显示面板10′上的像素是不同的，这样就形成了视差图像，从而观察者大脑能够合成出立体效果，实现3D显示。The specific principle of implementing the 3D display by the parallax barrier 20" is that the pixels on the display panel 10" are propagated to the observation point through the light-transmitting stripe 22" on the parallax barrier 20", as can be seen from FIG. The pixels on the display panel 10" that can be observed by the observer"s left eye 11" and right eye 12" are different, thus forming a parallax image, so that the observer"s brain can synthesize a stereoscopic effect and realize 3D. display.

从视差挡板的工作原理可以看出，观察者的左、右眼分别只能看到一半像素，从而导致显示屏的分辨率降低一半，亮度也降低一半，显示质量并不理想，并且功耗较高。From the working principle of the parallax barrier, it can be seen that the observer"s left and right eyes can only see half of the pixels, which causes the resolution of the display to be reduced by half, the brightness is also reduced by half, the display quality is not ideal, and the power consumption is Higher.

本公开提供一种视差挡板及显示装置，用以解决视差挡板式3D显示的分辨率低和亮度低的问题。The present disclosure provides a parallax barrier and a display device for solving the problem of low resolution and low brightness of a parallax barrier type 3D display.

为解决上述技术问题，本公开实施例中提供一种视差挡板，包括多条间隔且平行设置的第一条纹，在所述第一条纹之间形成第二条纹，所述第二条纹为透光条纹，其中，所述第一条纹的透光率小于所述透光条纹的透光率，且所述第一条纹的透光率大于零且小于等于10％。In order to solve the above technical problem, a parallax barrier is provided in the embodiment of the present disclosure, including a plurality of spaced and parallel first stripes, and a second strip is formed between the first stripes, and the second strip is transparent. The light stripe, wherein the light transmittance of the first stripe is smaller than the light transmittance of the light stripe, and the light transmittance of the first stripe is greater than zero and less than or equal to 10%.

在如上所述的视差挡板中，可选地，所述第一条纹的宽度相同，并且所述透光条纹的宽度相同。In the parallax barrier as described above, optionally, the widths of the first stripes are the same, and the widths of the light-transmitting stripes are the same.

在如上所述的视差挡板中，可选地，所述透光条纹的透光率大于95％。In the parallax barrier as described above, the light transmittance of the light-transmitting stripe is optionally greater than 95%.

在如上所述的视差挡板中，可选地，所述透光率是指在光线入射至所述第一条纹或透光条纹后、经过所述第一条纹或透光条纹透射的光线的强度与入射光线的强度之比。In the parallax barrier as described above, optionally, the light transmittance refers to light transmitted through the first stripe or the light-transmitting strip after the light is incident on the first stripe or the light-transmitting stripe. The ratio of the intensity to the intensity of the incident light.

在如上所述的视差挡板中，可选地，所述透明基板为玻璃基板、有机树脂基板或石英基板。In the parallax barrier as described above, the transparent substrate is optionally a glass substrate, an organic resin substrate, or a quartz substrate.

本公开实施例中还提供一种显示装置，包括显示面板和如上所述的视差挡板。A display device including a display panel and a parallax barrier as described above is also provided in the embodiment of the present disclosure.

在如上所述的显示装置中，可选地，所述视差挡板被设置在显示面板的显示画面的一侧。In the display device as described above, optionally, the parallax barrier is disposed on one side of a display screen of the display panel.

在上述技术方案中，视差挡板利用狭缝光栅实现3D显示，通过设置透光条纹之间的第一条纹的透光率大于零，使得观察者的左右眼均能看到所有的像素，提高了3D显示的分辨率和亮度，并且降低了能耗。并设置第一条纹的透光率小于透光条纹的透光率，使得左右眼看到的图像存在视差，从而观察者大脑能够合成出立体效果，实现3D显示。同时，观察者的左右眼透过视差挡板能够看到所有像素，克服了现有的视差挡板存在看不到3D显示的死区的问题。In the above technical solution, the parallax barrier realizes 3D display by using the slit grating, and the transmittance of the first stripe between the light-transmitting stripes is set to be greater than zero, so that all the pixels of the observer"s left and right eyes can be seen, thereby improving The resolution and brightness of the 3D display and reduced energy consumption. The light transmittance of the first stripe is set to be smaller than the light transmittance of the light stripe, so that the image seen by the left and right eyes has parallax, so that the observer brain can synthesize a stereoscopic effect and realize 3D display. At the same time, the observer"s left and right eyes can see all the pixels through the parallax barrier, which overcomes the problem that the existing parallax barrier does not have a dead zone of 3D display.

图2表示本公开实施例中视差挡板式3D显示的原理示意图一；2 is a schematic diagram 1 showing the principle of a parallax barrier type 3D display in an embodiment of the present disclosure;

图3表示本公开实施例中视差挡板式3D显示的原理示意图二；以及3 is a schematic diagram 2 showing the principle of a parallax barrier type 3D display in an embodiment of the present disclosure;

图4表示本公开实施例中视差挡板式3D显示的原理示意图三。FIG. 4 shows a schematic diagram 3 of the principle of a parallax barrier type 3D display in an embodiment of the present disclosure.

利用狭缝光栅形成视差图像的视差挡板是实现裸眼3D显示的技术之一，其中，狭缝光栅通常由多条等宽且等间距设置的平行狭缝组成，所述狭缝为透光条纹，相邻狭缝之间为遮光条纹。视差挡板式3D显示的具体原理为：显示屏的像素被通过视差挡板上的透光条纹传播到观察点，观察点处的观察者的左眼和右眼所能够看到的像素不同，这样就形成了视差图像，从而观察者的大脑能够合成出立体效果，实现3D显示。A parallax barrier that forms a parallax image using a slit grating is one of techniques for achieving naked-eye 3D display, wherein the slit grating is generally composed of a plurality of parallel slits of equal width and equidistant arrangement, the slit being a light-transmitting stripe There is a light-shielding strip between adjacent slits. The specific principle of the parallax barrier type 3D display is that the pixels of the display screen are propagated to the observation point through the light-transmitting stripe on the parallax barrier, and the pixels visible to the observer"s left eye and right eye at the observation point are different. This forms a parallax image, so that the observer"s brain can synthesize a stereoscopic effect and realize 3D display.

在现有的视差挡板式3D显示技术，由于观察者的左右眼只能看到一半像素，从而导致显示屏的分辨率降低一半，亮度也降低一半，显示质量并不理想，并且功耗较高。In the existing parallax barrier type 3D display technology, since the observer"s left and right eyes can only see half of the pixels, the resolution of the display screen is reduced by half, the brightness is also reduced by half, the display quality is not ideal, and the power consumption is relatively low. high.

为了解决上述技术问题，本公开提供一种视差挡板，利用狭缝光栅形成视差图像来实现3D显示。所述视差挡板包括多条间隔且平行设置的第一条纹，在所述第一条纹之间形成第二条纹。所述第二条纹为透光条纹，对应狭缝光栅的狭缝。其中，所述第一条纹的透光率小于所述透光条纹的透光率，使得观察者左右眼看到的像素不同，形成视差图像，从而观察者大脑能够合成出立体效果，实现3D显示。并设置所述第一条纹的透光率大于零，使得观察者左右眼均能够看到所有的像素，相对于现有的视差挡板，提高了3D显示的分辨率和亮度，并降低了能耗。In order to solve the above technical problem, the present disclosure provides a parallax barrier that forms a parallax image using a slit grating to realize 3D display. The parallax barrier includes a plurality of first strips spaced apart and disposed in parallel, and a second strip is formed between the first strips. The second stripe is a light transmissive stripe corresponding to the slit of the slit grating. The light transmittance of the first stripe is smaller than the light transmittance of the light stripe, so that the pixels seen by the observer"s left and right eyes are different, and a parallax image is formed, so that the observer"s brain can synthesize a stereoscopic effect and realize 3D display. And setting the light transmittance of the first stripe to be greater than zero, so that all the pixels can be seen by the observer for both left and right eyes, and the resolution and brightness of the 3D display are improved compared with the existing parallax barrier, and the energy is reduced. Consumption.

死区。而在本公开的技术方案中，观察者透过视差挡板，左右眼均能看到所有像素，从而不会存在看不到3D显示的死区的问题。At the same time, because the observer passes through the existing parallax barrier, only half of the pixels can be seen in the left and right eyes, and half of the pixels have a certain visible area, that is, the existing parallax barrier does not have a 3D display.

dead zone. In the technical solution of the present disclosure, the observer can see all the pixels through the parallax barrier and the left and right eyes, so that there is no problem that the dead zone of the 3D display cannot be seen.

本公开的技术方案的具体工作原理为：设置狭缝光栅的透光条纹和位于透光条纹之间的第一条纹的透光率不同，使得观察者左右眼看到的像素不同，这样就形成了视差图像，从而观察者大脑能够合成出立体效果，实现3D显示。并设置第一条纹的透光率大于零，使得观察者左右眼均能够看到所有的像素，提高了3D显示的分辨率和亮度，并且降低了能耗，克服了现有的视差挡板存在看不到3D显示的死区的问题。The specific working principle of the technical solution of the present disclosure is that the light transmittance of the slit strip grating and the first stripe between the light stripe strips are different, so that the pixels seen by the observer"s left and right eyes are different, thus forming a Parallax images, so that the observer"s brain can synthesize stereoscopic effects and achieve 3D display. And setting the transmittance of the first stripe to be greater than zero, so that the observer can see all the pixels in the left and right eyes, improve the resolution and brightness of the 3D display, and reduce the energy consumption, overcoming the existing parallax barrier. I can"t see the problem of the dead zone in 3D display.

具体地：如图2所示，假设第一条纹21的透光率为5％，透光条纹22的透光率为100％，透光条纹22被等宽且等间距设置。观察者的左眼11看到的像素为：R1+B1+G2+1/2(G1+R2+B2)+R3+B3+G4+1/2(G3+R4+B4)，右眼12看到的像素为：G1+R2+B2+1/2(R1+B1+G2)+G3+R4+B4+1/2(R3+B3+G4)，显然，观察者的左右眼观察到的像素不同，能够形成视差图像，而且，观察者的左右眼均能够观察到所有的像素。Specifically, as shown in FIG. 2, it is assumed that the light transmittance of the first stripe 21 is 5%, the light transmittance of the light-transmitting stripe 22 is 100%, and the light-transmitting strips 22 are equally wide and equally spaced. The pixels seen by the observer"s left eye 11 are: R1+B1+G2+1/2(G1+R2+B2)+R3+B3+G4+1/2(G3+R4+B4), right eye 12 The pixel to be obtained is: G1+R2+B2+1/2(R1+B1+G2)+G3+R4+B4+1/2(R3+B3+G4), obviously, the pixels observed by the observer"s left and right eyes Differently, a parallax image can be formed, and all the pixels can be observed by the observer"s left and right eyes.

通过将本公开的视差挡板应用到显示装置上以进行3D显示，能够提高3D显示装置的分辨率和亮度，并且降低能耗，克服了现有的视差挡板存在看不到3D显示的死区的问题。By applying the parallax barrier of the present disclosure to the display device for 3D display, the resolution and brightness of the 3D display device can be improved, and the power consumption can be reduced, overcoming the existence of the existing parallax barrier that does not see the 3D display. District problem.

结合图2-图4所示，本公开实施例中提供一种视差挡板20，具体为狭缝光栅，包括多条间隔且平行设置的第一条纹21，在第一条纹21之间形成第二条纹22。其中，第二条纹22为透光条纹，对应狭缝光栅的狭缝。第一条纹21的透光率小于透光条纹22的透光率，使得观察者的左右眼透过视差挡板20看到的像素不同，这样就形成了视差图像，从而观察者大脑能够合成出立体效果，实现3D显示。As shown in FIG. 2 to FIG. 4 , a parallax barrier 20 , specifically a slit grating, includes a plurality of first strips 21 spaced apart and arranged in parallel, and a first strip 21 is formed between the first strips 21 . Two stripes 22. The second stripe 22 is a light-transmitting stripe corresponding to the slit of the slit grating. The light transmittance of the first stripe 21 is smaller than the light transmittance of the light-transmitting stripe 22, so that the pixels seen by the observer"s left and right eyes through the parallax barrier 20 are different, thus forming a parallax image, so that the observer"s brain can synthesize Stereo effect, 3D display.

并且，设置第一条纹21的透光率大于零，使得观察者的左右眼透光视差挡板20均能够看到所有的像素，相对于现有的视差挡板的第一条纹21为不透光，提高了3D显示的分辨率和亮度，并且降低了能耗，不存在看不到3D显示的死区的问题。Moreover, the light transmittance of the first stripe 21 is set to be greater than zero, so that the observer"s left and right eye light-transmissive parallax barriers 20 can see all the pixels, and the first stripe 21 of the existing parallax barrier is not transparent. Light, which improves the resolution and brightness of the 3D display, and reduces the power consumption, there is no problem of not seeing the dead zone of the 3D display.

具体地，可以设置第一条纹21的透光率为大于零且小于等于10％，优选为5％。透光条纹22的透光率大于95％。在第一条纹21的透光率大于10％的情况下，由于透过第一条纹21的光的光强增加，容易与透过透光条纹22的光形成串扰，使得观察者的左右眼透过视差挡板20看到的像素趋于相同，无法形成视差图像，从而观察者大脑不能够合成出立体效果，无法实现3D显示。Specifically, the light transmittance of the first stripe 21 may be set to be greater than zero and less than or equal to 10%, preferably 5%. The light transmittance of the light-transmitting strips 22 is greater than 95%. In the case where the light transmittance of the first stripe 21 is more than 10%, since the light intensity of the light transmitted through the first stripe 21 is increased, crosstalk is easily formed with the light transmitted through the light-transmitting stripe 22, so that the observer"s left and right eyes are transparent. The pixels seen by the parallax barrier 20 tend to be the same, and a parallax image cannot be formed, so that the observer"s brain cannot synthesize a stereoscopic effect, and 3D display cannot be realized.

本公开的技术方案通过设置视差挡板的位于透光条纹之间的第一条纹的透光率大于零、并小于透光条纹的透光率，提高了3D显示的分辨率和亮度，并且降低了能耗，同时，还克服了现有的视差挡板存在看不到3D显示的死区的问题。The technical solution of the present disclosure improves the resolution and brightness of the 3D display by setting the transmittance of the first stripe between the light-transmitting stripes of the parallax barrier to be greater than zero and smaller than the transmittance of the light-transmitting stripe, and reducing The energy consumption, at the same time, overcomes the problem that the existing parallax barrier does not have a dead zone of 3D display.

可选地，视差挡板20的第一条纹21的宽度相同，透光条纹22的宽度也相同，即，形成的狭缝光栅的狭缝(透光条纹22)等宽且等间距设置，从而观察者的左眼11只能看到偶数(或奇数)像素，右眼12只能看到奇数(或偶数)像素，使得左眼11看到的图像的像素均匀分布，右眼12看到的图像的像素也均匀分布，并且颜色均匀，从而提高了图像显示质量。Optionally, the width of the first stripe 21 of the parallax barrier 20 is the same, and the width of the light-transmitting strips 22 is also the same, that is, the slits (light-transmitting strips 22) of the formed slit grating are equally wide and equally spaced, thereby The observer"s left eye 11 can only see even (or odd) pixels, and the right eye 12 can only see odd (or even) pixels, so that the pixels of the image seen by the left eye 11 are evenly distributed, as seen by the right eye 12. The pixels of the image are also evenly distributed and the color is uniform, thereby improving the image display quality.

当然，视差挡板20的透光条纹22也可以被不等宽等间距设置、或等宽不等间距设置、或不等宽不等间距设置。Of course, the light-transmitting strips 22 of the parallax barrier 20 may also be disposed at equal intervals of unequal widths, or unequal pitches of equal widths, or unequal pitches.

在实际制作工艺中，视差挡板20的结构并不局限于上述实施方式中一种，也可以提供一透明基板，在所述透明基板上分别形成间隔设置的第一条纹21和透光条纹22，例如：采用印刷的方式形成第一条纹21和透光条纹22。In the actual manufacturing process, the structure of the parallax barrier 20 is not limited to one of the above embodiments, and a transparent substrate may be provided, and the first stripe 21 and the light-transmitting stripe 22 are formed on the transparent substrate. For example, the first stripe 21 and the light-transmitting stripe 22 are formed by printing.

本公开实施例中还提供一种显示装置，具体为3D显示装置，包括显示面板和本公开实施例中的视差挡板。A display device, in particular a 3D display device, includes a display panel and a parallax barrier in the embodiment of the present disclosure.

上述技术方案中的显示装置通过采用本公开实施例中的视差挡板来实现3D显示，能够提高3D显示的分辨率和亮度，并且降低能耗，克服了现有的视差挡板存在看不到3D显示的死区的问题。The display device in the above technical solution realizes 3D display by adopting the parallax barrier in the embodiment of the present disclosure, can improve the resolution and brightness of the 3D display, and reduce energy consumption, and overcomes the existing parallax barrier to be invisible. 3D shows the problem of the dead zone.

具体地，可以将视差挡板20设置在显示面板10的显示画面的一侧，如图2所示。Specifically, the parallax barrier 20 can be disposed on one side of the display screen of the display panel 10 as shown in FIG. 2.

对于液晶显示装置，其还包括背光源30，视差挡板20具体可以被设置在显示面板10的远离背光源30的一侧，如图3所示；视差挡板20具体也可以被设置在显示面板10和背光源30之间，如图4所示。For the liquid crystal display device, it further includes a backlight 30. The parallax barrier 20 can be specifically disposed on a side of the display panel 10 remote from the backlight 30, as shown in FIG. 3; the parallax barrier 20 can also be specifically disposed on the display. Between the panel 10 and the backlight 30, as shown in FIG.

对于有机发光二极管显示装置和等离子显示装置等不需要背光源的显示装置，视差挡板20被设置在显示面板10显示画面的一侧，如图2所示。For a display device that does not require a backlight such as an organic light emitting diode display device and a plasma display device, the parallax barrier 20 is disposed on one side of the display screen of the display panel 10, as shown in FIG.

视差挡板20，位于显示面板10远离背光源30的一侧，如图3所示；或，位于显示面板10和背光源30之间，如图4所示。The parallax barrier 20 is located on the side of the display panel 10 away from the backlight 30, as shown in FIG. 3; or between the display panel 10 and the backlight 30, as shown in FIG.

纹的透光率小于透光条纹的透光率，使得观察者左右眼看到的图像存在视差，从而观察者大脑能够合成出立体效果，实现3D显示。同时，观察者的左右眼透过视差挡板能够看到所有像素，不会存在现有技术中的死区问题。The parallax barrier in the disclosed technical solution realizes 3D display by using a slit grating, and the transmittance of the first stripe between the light-transmitting stripes is set to be greater than zero, so that all the pixels of the observer"s left and right eyes can be seen, thereby improving The resolution and brightness of the 3D display and reduced energy consumption. And set the first one

The light transmittance of the grain is smaller than the light transmittance of the light-transmitting stripe, so that the image seen by the observer"s left and right eyes has parallax, so that the observer"s brain can synthesize a stereoscopic effect and realize 3D display. At the same time, the observer"s left and right eyes can see all the pixels through the parallax barrier, and there is no dead zone problem in the prior art.

Replace and optimize module 130, for obtaining the region being made up of target pixel points, and replace another material corresponding region, carry out ghost optimization.

Tolerance threshold module, for setting tolerance threshold value according to ghost coefficient；Wherein ghost coefficient is that the difference size according to sight line with the angle of screen determines.

Recently, display devices capable of performing 3D display are spotlighted. A 3D display displays viewpoint images including parallax (difference in point of view). When a viewer views viewpoint images different from each other with right and left eyes, the viewer recognizes a stereoscopic image with a depth sensation. Also, such a display device has been developed in which three or more images including parallax are displayed, and more natural 3D images are provided to a viewer.

As such display devices, for example, a parallax barrier system and a lenticular lens system are available. These systems are configured to simultaneously display multiple viewpoint images and a viewer watches images different from each other depending on the viewing angle with right and left eyes. For example, JP-A-3-119889 teaches a display device of parallax barrier system in which liquid crystal elements are used as the barrier.

With respect to these display devices of such system, various techniques for improving the image quality have been disclosed. For example, JP-A-2008-249887 teaches a display device which reduces moire caused from relative positional relationship between pixels array and lens or barrier in a display part. Also, for example, JP-A-10-186294 teaches a display device capable of increasing the aperture ratio. Also, for example, JP-A-7-005420 teaches a display device which is capable of displaying images including continuous parallax. SUMMARY

FIG. 1 illustrates an example of configuration of a 3D display device according to the embodiment. A 3D display device 1 is a 3D display device of parallax barrier system. Since a display panel according to the embodiment of the present disclosure is achieved by this embodiment, the description thereof will be made accordingly.

The barrier part 10 is so-called a parallax barrier including multiple open/close parts (liquid crystal barrier) 11 and 12, which are light-transmissive or block the light as shown in FIG. 6A. In this example, the open/close parts 11 and 12 are provided extending in the vertical direction Y. In this example, the width W11 of the open/close part 11 and the width W12 of the open/close part 12 are different from each other; in this case, for example, W11>W12. However, the width relationship of the open/close parts 11 and 12 is not limited to this; it may be W11

In the above embodiments, the 3D display device of parallax barrier system is configured. However, the embodiment is not limited to this. Alternatively, for example, a 3D display device of a lenticular lens system may be configured. Detailed description is made below.

To overcome issues in the conventional parallel threedimensional imaging system, such as the smaller threedimensional public scene, none of the horizontal positive parallax resulting in threedimensional reproduction only in front of the screen and causing visual fatigue easily, an improved parallel 3D imaging method was proposed. Based on the portion of the readout pixel array reserved but not used for display in most image sensors, the display array was made a corresponding horizontal offset by reference from offaxis parallel display technology and then fed in 3D display monitor. Through the analysis and derivation in the established mathematical model, the horizontal positive parallax production was realized, so threedimensional reconstruction could be felt behind the screen, and the stereo visual effect was greatly enhanced. The proposed method was proved feasible on the selfdeveloped system of 640×480@120 Hz with selection of the CCD resolutions to 752×582, and the angle of threedimensional public scene could be increased from the conventional 29° to a maximum of 34°. The proposed method provides a new direction for the appropriate design of the positive and negative parallax and for the study on the improvement of the stereo effect.

Holographic display is capable of reconstructing the whole optical wave field of a three-dimensional (3D) scene. It is the only one among all the 3D display techniques that can produce all the depth cues. With the development of computing technology and spatial light modulators, computer generated holograms (CGHs) can now be used to produce dynamic 3D images of synthetic objects. Computation holography becomes highly complicated and demanding when it is employed to produce real 3D images. Here we present a novel algorithm for generating a full parallax 3D CGH with occlusion effect, which is an important property of 3D perception, but has often been neglected in fully computed hologram synthesis. The ray casting technique, which is widely used in computer graphics, is introduced to handle the occlusion issue of CGH computation. Horizontally and vertically distributed rays are projected from each hologram sample to the 3D objects to obtain the complex amplitude distribution. The occlusion issue is handled by performing ray casting calculations to all the hologram samples. The proposed algorithm has no restriction on or approximation to the 3D objects, and hence it can produce reconstructed images with correct shading effect and no visible artifacts. Programmable graphics processing unit (GPU) is used to perform parallel calculation. This is made possible because each hologram sample belongs to an independent operation. To demonstrate the performance of our proposed algorithm, an optical experiment is performed to reconstruct the 3D scene by using a phase-only spatial light modulator. We can easily perceive the accommodation cue by focusing our eyes on different depths of the scene and the motion parallax cue with occlusion effect by moving our eyes around. The experiment result confirms that the CGHs produced by our algorithm can successfully reconstruct 3D images with all the depth cues.

A pixel mask-based three-dimensional (3-D) display with uniform resolution is proposed. This 3-D display consists of a reflected light source, a pixel mask, a liquid crystal display (LCD) panel, and a lenticular lens. The reflected light source is located on the bottom layer of the proposed 3-D display. It has a reflective structure to improve optical efficiency, so it can make up the brightness loss, which is caused by the pixel mask. The pixel mask is located between the reflected light source and the LCD panel, and is attached on the back surface of the LCD panel. This pixel mask is made of a reflective material, and some transparent areas are etched on it. The pixel mask redefines the pixels of the two-dimensional display panel located in front of it, so the size and location of redefined pixels depend on the transparent area of the pixel mask. The arrangement of the redefined pixels can increase the column numbers of synthetic images. Therefore, the synthetic images can make 3-D images have uniform resolution. A 4-view prototype of this display is developed and the experimental result shows the proposed method can improve resolution uniformity successfully.