WO2014063411A1

WO2014063411A1 - Stereoscopic image display device

Info

Publication number: WO2014063411A1
Application number: PCT/CN2012/086043
Authority: WO
Inventors: 牛磊; 吴章奔; 汪星辰; 马骏
Original assignee: 上海天马微电子有限公司
Priority date: 2012-10-23
Filing date: 2012-12-06
Publication date: 2014-05-01
Also published as: CN103777398B; CN103777398A

Abstract

A stereoscopic display device, comprising: a flat-panel display device, wherein the flat-panel display device comprises a thin-film transistor (TFT) substrate (501) and a colour film (CF) substrate (502) which are oppositely arranged. The TFT substrate (501) and the CF substrate (502) respectively comprise a plurality of rows of sub-pixels (505, 1005) correspondingly arranged. Each row of sub-pixels (505, 1005) on the CF substrate (502) has the same colour, and a first shading part is arranged between two adjacent sub-pixels (505, 1005); and each sub-pixel (505, 1005) on the TFT substrate (501) is controlled by a TFT (506), and each sub-pixel (505, 1005) on the CF substrate (502) or each sub-pixel (505, 1005) on the TFT substrate (501) is provided thereon with second shading parts (510, 802, 1006), and each sub-pixel (505, 1005) on the CF substrate (502) or each sub-pixel (505, 1005) on the TFT substrate (501) is divided into m parts by the second shading parts (510, 802, 1006), where m is greater than 1, and m is an integer. Each sub-pixel (505, 1005) is divided into a plurality of parts using the second shading parts (510, 802, 1006), and the spacing of the moiré fringes is effectively reduced, thereby mending the problem of interference in the moiré fringes.

Description

Stereoscopic image display device

The present application claims priority to Chinese Patent Application No. 2012-1040711, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD The present invention relates to the field of stereoscopic display technology, and in particular to a stereoscopic image display device capable of effectively reducing moiré fringes. Background Art The basic principle of the stereoscopic display technology is to provide a display screen to the left and right images of the left and right eyes by using the parallax of the left and right eyes of the person, and to mix the stereoscopic images by the observer's brain.

The stereoscopic image display device can be divided into a glasses type and a eye type, wherein the eye type can be further divided into a parallax barrier, a columnar lens, a lenticular lens, a directional backlight, and a multi-screen. The principle of the stereoscopic display device of the parallax barrier and the lenticular lens technology will be separately described below.

Parallax barrier technology

Parallax barrier technology is to add a liquid crystal grating in front of or behind the 2D display to form a stereoscopic display optical system. The parallax image displayed on the odd and even pixels is respectively transmitted to the left of the person by the blocking of the light by the liquid crystal grating. The right eye, after three-dimensional fusion of the human visual center, gains a three-dimensional sense. As shown in FIG. 1 , the stereoscopic display device includes a 2D display, and the 2D display includes a right pixel 102 and a left pixel 103 with a pixel width of 105. The light-shielding grating 101 is further disposed on the 2D display, and the grating 101 can be It is provided with a longitudinal stripe visor. The period of the grating is 104, and one period of the grating corresponds to one left pixel and one right pixel, that is, one period 104 of the grating is twice the pixel width 105, when a person stands on the side of the grating 101 for observation. Through the stripe visor, the light of the right pixel 102 can only reach the right eye of the person, and the light of the left pixel 103 can only reach the left eye. Thus, the blocking of the light by the grating 101 transmits the parallax image displayed on the odd and even pixels to the left and right eyes of the person, and for the observer located directly in front of the screen, the binocular parallax is generated, and the result is obtained. Stereo vision.

Lenticular technology

A lens is provided to replace the barrier, and the image is separated by the refraction of the lens. As shown in FIG. 2, the stereoscopic display device of the lenticular lens technology includes a 2D display and a lens plate 201 disposed in front of the 2D display, the 2D display including a right pixel 202 and a left pixel 203, each of which has a width of 205. A lens plate 201 is disposed in front of the 2D display to form an optical system for stereoscopic display, wherein the lens plate 201 is closely arranged by a plurality of elongated semi-cylindrical lenses, and the period 204 of each semi-cylindrical lens corresponds to a left pixel and One right pixel, that is, the period 204 of each semi-cylindrical lens is twice the pixel width 205, so that the light of the pixel passes through the refraction of the lens plate 201, and the right pixel 202 will only reach In the right eye, the left pixel 203 only reaches the left eye, and the parallax image displayed on the odd and even pixels is transmitted to the left and right eyes of the person, and the stereoscopic fusion is obtained through the stereoscopic fusion of the visual center.

However, in the prior art, whether it is a parallax barrier technique or a lenticular lens technique, when a grating structure or a lens structure is combined with a 2D display to form a stereoscopic image display device, moire fringes are generated. The moire fringe is a periodically repeating mura, that is, a display unevenness that occurs in a cycle. Taking a raster stereoscopic image display device as an example, the moire fringes are mainly caused by the periodic repetition of the black matrix (BM) stripes in the grating and the 2D display and the intersection between the grating and the BM. The observation of the stereo image by the moire fringes may cause disturbances, and in severe cases, the stereoscopic image may not be seen.

The principle of the generation of moiré fringes will be described in detail below with reference to FIG. 3 in the case of a raster stereoscopic image display device. As shown in FIG. 3, the raster stereoscopic image display device includes:

a plurality of gratings A arranged in the horizontal direction, and the spacing between the gratings A is a;

a plurality of BM stripes B, the direction of the plurality of BM stripes may be two or more different directions, and the BM stripes in each direction interact with the grating A to generate moiré stripes, and The direction of the moire fringes is different, and different moire fringes on the entire stereoscopic image display device may be superimposed to affect the display effect. Taking the BM stripe B in the same direction as an example, the plurality of BM stripe B and the grating A have a certain angle β, and the spacing between the BM stripe 为 is b, and the BM stripe spacing b The ratio k to the grating pitch a.

Since the rules of the grating A and the BM stripe B are repeated, the moire fringes C are generated, and the spacing between the moiré fringes C is p, and the display effect of the moire fringes C and the display effect at the pitch p are different. When viewing, give the observer a visual effect that periodically shows unevenness.

Similarly, A can also be understood as the direction in which the lens is disposed. Due to the regular repetition of the lens A and the BM stripe B, a moire fringe C is generated, and the spacing between the moiré fringes C is p, which is given when observing The observer has a visual effect that periodically displays unevenness.

The spacing of the moiré fringes p can be calculated by Equation 1:

p =\

Formula 1 SUMMARY OF THE INVENTION The inventors have found that, with reference to FIG. 3, if the pitch p between the moiré fringes C is larger, the interference of the moire fringes C to the observer of the stereoscopic image is larger, resulting in observation. The stereoscopic image cannot be seen, but if the pitch p between the moiré fringes C can be lowered, and the value of the pitch p is lowered to a size that is invisible to the human eye, the influence of the moire fringes on the observation can be reduced.

Referring to FIG. 4, the variation of the pitch p between the moire fringes C obtained by the inventors through experiments and tests, as shown in FIG. 4, when the ratio k of the BM fringe pitch to the grating/lens pitch is different. , Moir fringe spacing p along with The angle between the grating/lens and the BM stripe changes. As shown in Fig. 4, the moiré fringe pitch ρ decreases as the angle β increases. When the β angle is close to 90 degrees, the moire fringe pitch approaches 0; when at a certain β value, ie, the grating/lens When the angle β of the ridge stripe is fixed, the moiré fringe pitch ρ decreases as k decreases.

Based on this, the present application provides a new stereoscopic image display device to reduce moiré in stereoscopic image display and improve stereoscopic image display shield.

Specifically, the stereoscopic image display device provided by the present invention includes: a flat panel display device, wherein the flat panel display device includes a plurality of rows of sub-pixels, and the color of each sub-pixel is the same, and is disposed in the first light-shielding portion between the sub-pixels. Each of the sub-pixels is controlled by one TFT, and each of the sub-pixels is m portions by the second light-shielding portion, m>l, and m is an integer.

Preferably, the first light shielding portion is a first portion and a second portion, a first portion of the first light shielding portion is disposed between each row of sub-pixels, and a second portion of the first light shielding portion is disposed at each row of sub-pixels Between two adjacent sub-pixels of a pixel.

Preferably, a direction of the first portion of the first light shielding portion is the same as a row direction of the sub-pixel, and an angle between a direction of the second portion of the first light shielding portion and the first portion of the first light shielding portion is greater than 0 degrees is less than or equal to 90 degrees.

Preferably, an angle between a direction of the second portion of the first light shielding portion and a first portion of the first light shielding portion is 90 degrees.

Preferably, the direction of the second light shielding portion is parallel to the direction of the second portion of the first light shielding portion.

Preferably, the m portions into which each of the sub-pixels are divided have the same shape.

Preferably, the second portion of the first light shielding portion is the same material as the second light shielding portion.

Preferably, the first light shielding portion and the second light shielding portion are both black matrixes.

Preferably, the first portion of the first light shielding portion is a black matrix, and the second portion of the first light shielding portion and the second light shielding portion are both metal.

Preferably, the flat panel display device further includes a TFT substrate, and the metal is made of metal in the same layer as the data line layer or the scan line layer of the TFT substrate.

Preferably, the metal is Al, Mo, or an alloy of A1 and Mo.

Preferably, the second portion of the first light shielding portion has the same width as the second light shielding portion.

Preferably, the flat panel display device is a liquid crystal display (LCD) or an organic electroluminescent display (OLED).

Preferably, the flat panel display device is an FFS type liquid crystal display device or an IPS type liquid crystal display device.

Preferably, in the FFS type liquid crystal display device or the IPS type liquid crystal display device, each sub-pixel is divided into a plurality of domains by a domain line, and the second light-shielding portion and the domain line are overlapped in a light-transmitting direction.

Preferably, each sub-pixel is divided into a plurality of domains by a domain line, and the second light-shielding portion is formed by a domain line.

Preferably, the stereoscopic image display device further includes a grating, the period of the grating being along each of the sub-pixels X times the width of the row direction, X is a natural number, and X is greater than or equal to 2.

Preferably, the stereoscopic image display device further includes a lens having a period of Y times the width of each of the sub-pixels along the row direction, Y being a natural number, and Y being greater than or equal to 2.

Preferably, the sub-pixel is a color sub-pixel, and includes sub-pixels of three colors of R, G, and B.

The stereoscopic image display device according to claim 1, wherein the sub-pixels are black and white sub-pixels, and include sub-pixels of two colors of black and white.

Compared with the prior art, the present invention has the following advantages:

In the above-described stereoscopic image display device, each of the sub-pixels included in the CF substrate or the TFT substrate in the flat panel display device is covered by m portions (m>1 and m is an integer), so that the stereoscopic display device uses a lenticular lens. The technology is also realized by the parallax barrier technology. The ratio of the spacing between the BM stripes in the flat panel display device to the spacing between the gratings/lenses is 1/m in the prior art, since the moiré fringe spacing is along with the BM fringes. The ratio between the spacing between the grating and the grating/lens is reduced, and the smaller the moiré spacing is, the smaller the interference to the stereoscopic image observer is, so that the moiré can be reduced. The display effect of the grain. DRAWINGS

1 is a schematic diagram of the operation of a stereoscopic display device of a parallax barrier technology in the prior art;

2 is a schematic diagram showing the operation of a stereoscopic display device of a lenticular lens technology in the prior art;

3 is a schematic diagram of the generation of moiré in a stereoscopic image display device in the prior art;

4 is a graph showing a decrease in the moire fringe pitch as the angle between the grating and the BM fringe increases as k is a parameter in the embodiment of the present invention;

5 is a schematic diagram of a pixel design in a stereoscopic display device according to a first embodiment of the present invention; FIG. 6 is a plan view of a CF substrate according to a first embodiment of the present invention;

Figure 7 is a plan view of the lens plate of the first embodiment in the embodiment of the present invention;

Figure 8 is a simulation diagram of the moire fringe pitch p when the ratio n of the lens period to the BM pitch is different in the embodiment of the present invention.

Figure 9 is a plan view of a sub-pixel of the second embodiment in the embodiment of the present invention.

Fig. 10 is a view showing the flat panel display device in the embodiment of the present invention in which the domain line of the FFS liquid crystal display device is overlapped with the second light blocking portion. detailed description

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the invention.

Embodiment 1: As shown in FIG. 5, it is a schematic diagram of pixel design of a stereoscopic display device according to an embodiment of the present invention.

The stereoscopic display device includes a flat panel display device, and the flat panel display device includes a thin film transistor (TFT) substrate 501 and a color filter (CF) substrate 502 disposed opposite to each other, and is disposed on the TFT A liquid crystal (not shown) between the substrate 501 and the CF substrate 502.

In the TFT substrate 501, a plurality of scanning lines 503 and a plurality of data lines are disposed on the TFT substrate 501.

504, the plurality of scan lines 503 and the plurality of data lines 504 are disposed to intersect each other to define a plurality of sub-pixels 505. In the embodiment, only six sub-pixels 505 arranged in three rows and two columns are shown. . Each of the sub-pixels 505 is controlled by a TFT switching element 506, each of which includes a gate, a source and a drain. The gate material is generally an alloy such as an alloy of aluminum or molybdenum, and the source and drain materials are generally selected from metallic aluminum or metallic molybdenum. Each of the sub-pixels further includes a pixel electrode 507, which is connected to a drain of the TFT switching element 506. The scan line 503 is connected to the gate of the TFT switching element 506, and the data line 504 is connected to the source of the TFT switching element 506. The pixel electrode 507 is generally composed of a transparent electrode such as indium tin oxide or zinc oxide.

In the case of the CF substrate 502, the CF substrate 502 includes a plurality of sub-pixels corresponding to the sub-pixels 505 on the TFT substrate 501, and the sub-pixels are color sub-pixels, for example, among the plurality of color sub-pixels. Subpixels of the same color are arranged in rows, and sub-pixels of different colors are arranged in columns. As shown in Fig. 5, in the present embodiment, only six sub-pixels which are arranged in three rows and two columns and which correspond to six sub-pixels 505 on the TFT substrate 501 are shown on the CF substrate 502. The first row of subpixels is blue (B, B) subpixels, the second row of subpixels is green (Green, G) subpixels, and the third row of subpixels is red (Red, R) subpixels, where adjacent The three ^ G and R sub-pixels constitute one pixel, where the three ^ G and R sub-pixels defining the first column are composed of the left pixel 508a, and the three columns of the three B, G, and R sub-pixels are composed of Right pixel 508b.

Referring to FIG. 5, a first light blocking portion is disposed between the sub-pixel and the sub-pixel, and the first light blocking portion includes a first light-shielding portion first portion 509a disposed between each sub-pixel of each row, specifically a first light blocking portion first portion 509a is disposed between the first row B sub-pixel and the second row G sub-pixel, and a first light blocking portion is also disposed between the second row G sub-pixel and the third row R sub-pixel a first portion 509a; a first light blocking portion second portion 509b is disposed between adjacent two sub-pixels of each row of sub-pixels, for example, in the first row B sub-pixel, between two adjacent B sub-pixels is disposed The first light shielding portion second portion 509b. Further, the first light blocking portion first portion 509a and the first light blocking portion second portion 509b are both BM stripes.

Further, the second light shielding portion 510 on which the sub-pixels are disposed is divided into m portions. In this embodiment, the second light shielding portions 510 have the same direction, and each of the sub-pixels is Divided into three parts (m=3), referring to FIG. 5, the first B sub-pixels in the first row are divided into 511a, 511b, and 511c3 portions by the second light shielding portion 510, and the three portions have the same shape and size. In the present embodiment, the second light blocking portion 510 is also made of the same material as the BM stripe.

Referring to FIG. 6 , FIG. 6 is a plan view of the entire CF substrate 502. In this embodiment, an angle between the first portion 509 a of the first light shielding portion and the second portion 509 b of the first light shielding portion is close to 90 degrees, that is, Subpixel shape is close to A square shape that is a regular shape of a sub-pixel. Further, the second light blocking portion 510 is the same direction as the first light blocking portion second portion 509b, that is, the sub-pixel 508a and the sub-pixel 508b are respectively divided into three identical small squares by the second light blocking portion 510, and each row is In the sub-pixel unit, the interval between the first light-shielding portion second portion 509b and the second light-shielding portion 510 is equal to each other, and corresponds to 1/3 of the interval between the adjacent first light-shielding portion second portions 509b. If it is assumed that the interval between the first adjacent first light-shielding portions 509b is b, the interval between the first light-shielding portion second portion 509b and the second light-shielding portion 510 is b/3.

The stereoscopic display device provided in this embodiment may employ a lenticular lens technology, and the stereoscopic display device further includes a lens plate. Please refer to FIG. 5 and FIG. 7. FIG. 7 is a top view of the lens plate, and the lens plate is made up of a plurality of elongated lenses. The semi-cylindrical lenses 512 are closely arranged, and the period of each of the semi-cylindrical lenses 512 is a.

Referring to FIG. 5, a correspondence relationship between one period of the lens plate and the CF substrate 502 is shown. The lens plate is disposed in front of the CF substrate 502, that is, the lens plate faces the viewer side, and the CF substrate 502. Located behind the lens plate 512. The period a of each of the semi-cylindrical lenses 512 corresponds to Y sub-pixels, that is, each of the periods a is Y times the width of each sub-pixel in the direction of the row, wherein Y is a natural number greater than 2, in the present embodiment For example, the value of Y is 2, that is, the semi-cylindrical lens 512 corresponds to two sub-pixels on the CF substrate 502, specifically one left pixel 508a and one right pixel 508b.

Referring to Figures 5, 6, and 7, the angle between the direction of the elongated semi-cylindrical lens 512 and the direction of the first portion 509a of the first light-shielding portion is 90 degrees.

As can be seen by combining Equation 1 and FIG. 4, when the angle between the semi-cylindrical lens 512 and the first portion 509a of the first light-shielding portion is 90 degrees, regardless of the pitch of the first portion 509a of the first light-shielding portion and the period a of the semi-cylindrical lens 512 In what relationship, the pitch p value of the moiré fringes approaches 0, since the human eye cannot distinguish when the pitch p of the moiré fringes is less than 200 μm, the semi-cylindrical lens 512 and the first shading The moiré fringes formed by the first portion 509a are negligible.

Referring next to Figures 5, 6, and 7, the angle of the elongated semi-cylindrical lens 512 and the second portion 509b of the first light-shielding portion are 0 degrees.

As described above, in the direction parallel to the semi-cylindrical lens 512, the spacing between the second portions 509b of the first light-shielding portions is b, and the semi-cylindrical lenses 512 correspond to the two sub-pixels on the CF substrate 502, that is, a is equal to 2b. The ratio k of the pitch b of the second portion 509b of the first light-shielding portion to the period a of the semi-cylindrical lens 512 is k=b/a=l/2. As can be seen from Fig. 4, the pitch P of the moire fringes at this time is about 3 to 4 mm, i.e., 3000 μm to 4000 μm, and the human eye feels a noticeable unevenness in brightness when observed.

In this embodiment, since the second light shielding portion 510 is disposed in each sub-pixel, the interval between the adjacent first light shielding portion second portion 509b and the second light blocking portion 510 is the semi-cylindrical lens 512. In the parallel direction, the distance between the adjacent light-shielding portions is b/3, and the ratio of the light-shielding portion to the grating pitch is k'=(b/3) /a=l/6, that is, k' provided in this embodiment. One third of the prior art. According to the law shown in FIG. 4, the stereoscopic display device provided by this embodiment, the moire fringe The pitch p will drop significantly.

In the embodiment, the second light shielding portion 510 divides the sub-pixel into three portions. In other embodiments, the sub-pixel may also be divided into other portions by the second light shielding portion 510, that is, adjacent light shielding portions. The spacing is other values. Fig. 8 is a simulation diagram of the moire fringe pitch p when the ratio of the period 511 of the lens 512 to the pitch of the light-shielding portion is n. In FIG. 8, the lens period is a fixed value of 135 μm, and the pitch of the light shielding portion ranges from 9.64 to 135 μm, and the η values are 1, 2, 3, ..., respectively, and the direction of the lens. The angle with the second light shielding portion 510 is 1 degree, because in the actual production of the product, the angle between the lens 512 and the second light shielding portion 510 may be somewhat different, and the simulation with 1 degree is closer to the actual situation.

As can be seen from Fig. 8, when the ratio η of the pitch of the lens period a to the second light blocking portion 510 is larger, the pitch of the moire fringes is smaller. If the second light blocking portion 510 is not provided, the adjacent light blocking portions are the first light blocking portion second portions 509b, n is equal to 2, and the pitch of the moire fringes exceeds 4000 μm. In the embodiment, the second light shielding portion 510 divides the sub-pixel into three equal parts, the η value is equal to 6, and the moire fringe pitch is less than 2000 μm, thereby effectively reducing the spacing of the moire fringes. Significantly improved the problem of the moire of the moire.

As can be seen from Fig. 8, the larger the η value is, the smaller the moire fringe pitch is, and the smaller the ratio n of the lens period a to the second light blocking portion 510 is, the smaller the moire fringe pitch is. Therefore, in the present invention, a plurality of second light blocking portions 510 may be provided to divide the sub-pixel into a plurality of portions, and the more the divided portions, the larger the ratio of the pitch between the lens period a and the second light blocking portion 510. The smaller the spacing of the moiré stripes, the better the display will be.

The stereoscopic display device provided by the first embodiment is a stereoscopic display device with two viewpoints, that is, the observer can only stand in front to understand the stereoscopic effect. However, the stereoscopic display device provided by the present invention may also be a multi-view stereoscopic display device, and the observer The stereo effect can be felt at multiple angles. Specifically, each of the semi-cylindrical lens periods may correspond to Y sub-pixels, and Y is a natural number, and may be a natural number greater than 2 such as 3, 4, or 5. When the number of sub-pixels corresponding to the lens period is larger, the pitch of the moire fringes equivalent to the lens period and the second light-shielding portion is smaller.

In this embodiment, the material of the second light shielding portion 510 is the same as the material of the first light shielding portion second portion 509b and has the same width, that is, the material of the second light shielding portion 510 is consistent with the material of the BM stripe, and the The two light shielding portions 510 are formed at the same time as the first light shielding portion second portion 509b, and have the same reflectance to light, and display uniformity, thereby increasing the screen shield.

In addition, referring to FIG. 5, the second light shielding portion may be disposed in the sub-pixel 505 on the TFT substrate, and the sub-pixel 505 is m portions, and specifically, the method is the same as that of the first embodiment. Achieve the same technical effect. When the second light shielding portion 510 is disposed in a sub-pixel on the TFT substrate, the second light shielding portion 510 may be a metal, and the metal is made of metal in the same layer as the data line 504 or the scanning line 503 of the TFT substrate 501. The metal may be Al, Mo or an alloy of A1 and Mo; further, the first light shielding portion second portion 509b may also be disposed on the TFT substrate, and the material is the same as the second light shielding portion 510, so as to improve Uniformity of the display.

The stereoscopic display device in the present invention is not limited to the above specific embodiments, and in other embodiments, it can also be used. A parallax barrier technology, the stereoscopic display device includes a grating and a planar liquid crystal display panel. The grating may be disposed in front of or behind the planar liquid crystal display panel, and the period of each of the gratings includes X sub-pixels, that is, the period of each of the gratings is X of each sub-pixel along the width of the row direction. Times, X is a natural number greater than or equal to 2. The design of the planar liquid crystal display panel is the same as that of the planar liquid crystal display panel in the first embodiment, and will not be described in detail.

In the first embodiment of the present invention, the sub-pixel is a color sub-pixel, and the color sub-pixel includes three colors, which are respectively an R sub-pixel, a G sub-pixel, and a B sub-pixel. Further, the color sub-pixel may further include an R sub-pixel, a G sub-pixel, a B sub-pixel, a white sub-pixel, and a yellow sub-pixel.

In the first embodiment of the present invention, the sub-pixel is a color sub-pixel. Further, the sub-pixel may be a black and white sub-pixel, and the black and white sub-pixel includes a sub-pixel of two colors of a black sub-pixel and a white sub-pixel.

In summary, by dividing each of the sub-pixels 508a and 508b into a plurality of portions by using the second light shielding portion 510, the pitch of the moire fringes is effectively reduced, and the interference of the moire fringes is remarkably improved. problem. Embodiment 2:

The second embodiment is different from the first embodiment in that the angle between the first portion of the first light shielding portion of each of the sub-pixels and the second portion of the first light shielding portion is greater than 0 degrees and less than 90 degrees.

9 is a top view of a sub-pixel, as shown in FIG. 9, the first portion 801a of the first opaque portion is in the same direction as the sub-pixel row, and the sub-pixel is provided with a second opaque portion 802, the second shading Section 802 divides each of the sub-pixels into three portions 803a, 803b, 803c of the same shape and size, the first opaque portion second portion 801b being located between each sub-pixel of each row of sub-pixels and with the The second light blocking portion 802 is parallel, and the angle between the first light blocking portion second portion 801b and the first light blocking portion first portion 801a is α, that is, the second light blocking portion 802 and the first light blocking portion first portion 801a are sandwiched. The angle is α, and α is greater than 0 degrees and less than 90 degrees.

As can be seen from FIG. 3 and FIG. 4, when the value of k is constant, the pitch of the moiré fringes decreases as the angle between the semi-cylindrical lens and the second portion 801b of the first light-shielding portion increases, that is, The angle between the first light blocking portion second portion 801b and the first light blocking portion first portion 801a is increased. Therefore, when the angle between the first light shielding portion second portion 801b and the first light shielding portion first portion 801a is reduced from 90 degrees as described in the first embodiment to less than 90 degrees, that is, when the pixel is tilted, the first The angle between the second portion 801b of the light shielding portion and the lens period is increased to be greater than 0 degrees, and the pitch of the moiré stripes is increased by 0 degrees from the angle between the second portion 501b of the first light shielding portion and the lens period. When the spacing of the moiré fringes is small, the interference of the moire fringes can be reduced.

In summary, when the pixel is tilted, the spacing of the moire fringes can be reduced, thereby reducing the interference of the moire fringes to the observer. Embodiment 3:

In this embodiment, the flat panel display device in the stereoscopic display device is a fringe field switch (Fringe Field An embodiment of a Switching, FFS) liquid crystal display device or an In Panel Switching (IPS) type liquid crystal display device. The display principle of the FFS type liquid crystal display device or the IPS type liquid crystal display device is that the pixel electrode and the common electrode for driving the liquid crystal are all located on the same substrate, generally a TFT substrate, and the two modes of the liquid crystal display device are opposite to The conventional Twisted Nematic (TN) has a wider display viewing angle, but the liquid crystal molecules in the middle region between the adjacent pixel electrode and the common electrode generate domain lines due to the inability to have a clear deflection direction. Visually, there are strips of uneven color or uneven color in the area, which also has a certain impact on the display.

As shown in Fig. 10, it is a schematic diagram in which the flat panel display device is a domain line of the FFS type liquid crystal display device and the second light shielding portion is overlapped.

Each of the sub-pixels 1005 is controlled by the same TFT, and each of the sub-pixels 1005 is divided into m portions by the second light blocking portion 1006. When m is equal to 4, the respective portions are 1007a, 1007b, 1007c, and 1007d, respectively. The FFS liquid crystal display device further includes a pixel electrode 1001 and a common electrode 1002. A plurality of holes 1003 are disposed on the common electrode 1002, and the number of the holes 1003 is greater than or equal to 1. A domain line 1004 is then created in the middle of each of the apertures 1003 and between the apertures and apertures. The second light blocking portion 1006 and the domain line 1004 overlap in the light transmitting direction.

In this embodiment, the domain line region of the original FFS is a region where the light transmission is relatively chaotic. Now, the second light shielding portion is overlapped with the domain line 1004, so that the domain line 1004 can be blocked, and the influence of the domain line on the picture is affected. Also eliminated. The effect of reducing the pitch of the moire fringes and eliminating the influence of the domain lines can be achieved at the same time.

In the third embodiment of the present invention, the second light shielding portion and the domain line are respectively disposed and overlap in the light transmission direction. Further, the second light shielding portion may be formed by a domain line. The width of the domain line is the width of the second light shielding portion. That is, the second light-shielding portion is not provided on the CF substrate, and the sub-pixel is divided into a plurality of portions by the domain lines, thereby achieving the effect of reducing the pitch of the moire fringes.

In the third embodiment of the present invention, the flat panel display device may be an FFS liquid crystal display device. Further, the flat panel display device may also be an IPS liquid crystal display device.

The above description is only a preferred embodiment of the invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above, or modify the equivalents of equivalent changes without departing from the scope of the technical solutions of the present invention. Example. Therefore, any modifications, equivalent changes, and modifications made to the above embodiments in accordance with the technical solutions of the present invention are still within the scope of the technical solutions of the present invention.

Claims

Rights request

A stereoscopic image display device, comprising: a flat panel display device, wherein the flat panel display device comprises a thin film transistor TFT substrate and a color film CF substrate, wherein the TFT substrate and the CF substrate respectively comprise a plurality of rows of sub-pixels, wherein each row of sub-pixels on the CF substrate has the same color, and a first light-shielding portion is disposed between two adjacent sub-pixels, and each sub-pixel on the TFT substrate is replaced by a TFT Controlling, each sub-pixel on the CF substrate or each sub-pixel on the TFT substrate is provided with a second light-shielding portion, and each sub-pixel on the CF substrate or each of the TFT substrates The sub-pixels are m portions by the second light-shielding portion, m>l, and m is an integer.

The stereoscopic image display device according to claim 1, wherein the first light shielding portion is a first portion and a second portion, and the first portion of the first light shielding portion is disposed on each of the CF substrates Between the row of sub-pixels, the second portion of the first light-shielding portion is disposed between adjacent two sub-pixels of each row of sub-pixels on the CF substrate, or the second portion of the first light-shielding portion is disposed at Between two adjacent sub-pixels of each row of sub-pixels on the TFT substrate.

The stereoscopic image display device according to claim 2, wherein a direction of the first portion of the first light shielding portion is the same as a row direction of the sub-pixel, and a second portion of the first light shielding portion The angle between the direction and the first portion of the first light shielding portion is greater than 0 degrees and less than or equal to 90 degrees.

The stereoscopic image display device according to claim 3, wherein an angle between a direction of the second portion of the first light blocking portion and a first portion of the first light blocking portion is 90 degrees.

The stereoscopic image display device according to claim 2, wherein a direction of the second light blocking portion is parallel to a direction of the second portion of the first light blocking portion.

The stereoscopic image display device according to claim 1, wherein each of the sub-pixels on the CF substrate or each of the sub-pixels on the TFT substrate is divided into m shapes having the same shape.

The stereoscopic image display device according to claim 2, wherein the second portion of the first light blocking portion is made of the same material as the second light blocking portion.

The stereoscopic image display device according to claim 7, wherein the first light blocking portion and the second light blocking portion are both black matrixes.

The stereoscopic image display device according to claim 7, wherein the first portion of the first light shielding portion is a black matrix, and the second portion of the first light shielding portion and the second light shielding portion are both metal.

The stereoscopic image display device according to claim 9, wherein the metal is made of metal in the same layer as the data line layer or the scanning line layer of the TFT substrate.

The stereoscopic image display device according to claim 10, wherein the metal is Al, Mo, or an alloy of A1 and Mo.

The stereoscopic image display device according to claim 2, wherein the second portion of the first light blocking portion has the same width as the second light blocking portion.

The stereoscopic image display device according to claim 1, wherein the flat panel display device is a liquid crystal display LCD or an organic electroluminescence display OLED.

The stereoscopic image display device according to claim 13, wherein the flat panel display device is an edge field switch FFS type liquid crystal display device or an in-plane field switch IPS type liquid crystal display device.

The stereoscopic image display device according to claim 14, wherein in the FFS type liquid crystal display device or the IPS type liquid crystal display device, each sub-pixel is divided into a plurality of domains by a domain line, and the second The light shielding portion and the domain lines are arranged to coincide in the light transmission direction.

The stereoscopic image display device according to claim 14, wherein each sub-pixel is divided into a plurality of domains by a domain line, and the second light-shielding portion is formed by a domain line.

The stereoscopic image display device according to claim 1, wherein the stereoscopic image display device further comprises a grating, wherein a period of the grating is X times a width of each of the sub-pixels along a row direction, X Is a natural number, and X is greater than or equal to 2.

The stereoscopic image display device according to claim 1, wherein the stereoscopic image display device further comprises a lens, wherein a period of the lens is Y times a width of each of the sub-pixels along a row direction, Y Is a natural number, and Y is greater than or equal to 2.

The stereoscopic image display device according to claim 1, wherein the sub-pixels are color sub-pixels, and the color sub-pixels include at least R sub-pixels, G sub-pixels, and B sub-pixels.

The stereoscopic image display device according to claim 1, wherein the sub-pixels are black and white sub-pixels, and the black and white sub-pixels include sub-pixels of two colors of black and white.