Embodiment
See also Fig. 2, it is for the structural representation of display device first embodiment of the present invention.This display device 200 comprises a display panel 220, one module 210 backlight and a stereoptics film 230.Wherein, this display panel 220 can be a display panels, and this module 210 backlight can be arranged on the back side of this display panel 220, is used to this display panel 220 to provide a planar light so that its display frame.This stereoptics film 230 can be arranged on the display surface surface of this module 210 backlight (promptly away from) top of this display panel 220, is used for the plane picture that this display panel 220 shows is converted to stereoscopic picture plane.
See also Fig. 3, this display panel 220 can comprise a plurality of pixels 211 that are matrix distribution.Wherein, every m * n pixel 211 can be used as a stereoscopic display unit 212.In the present embodiment, m and n can get m=2, n=2 respectively.For ease of describing, to comprise that 2 * 2=4 pixel is that example is described following with each stereoscopic display unit 212 in about the description of present embodiment, and four pixels 211 of each stereoscopic display unit 212 will be designated as the first pixel cell P1, the second pixel cell P2, the 3rd pixel cell P3 and the 4th pixel cell P4 respectively.Wherein, these four pixel cell P1-P4 lay respectively at upper left quarter, upper right quarter, lower left quarter and the right lower quadrant of this stereoscopic display unit 212.
Each stereoscopic display unit 212 is display units of these display device 200 minimums.Particularly, if the image division that this display panel 220 is at a time shown is a plurality of elementary areas, then each stereoscopic display unit 212 is respectively applied for an elementary area that shows this image correspondence position in this display panel 220, and all stereoscopic display unit 212 shown elementary areas can be formed the image that this display panel 220 shows together.And in each stereoscopic display unit 212, this first to fourth pixel P1-P4 is respectively applied for the elementary area that shows these stereoscopic display unit 212 correspondences and takes the view data that obtains four different angles.
In one embodiment, these four different angles can be respectively front, the back side, the left side and the right side of object to be shown.Below be that example is simply introduced this four view data that pixel cell P1-P4 is shown with rectangular pyramid as object to be shown.See also Fig. 4 and Fig. 5, this rectangular pyramid comprises four leg-of-mutton side A, B, C, D, and it lays respectively at front, the left side, the right side and the back side of this rectangular pyramid.By from the front, the left side, four different angles in the right side and the back side take side A, side B, side C and the side D that resulting four images correspond respectively to this rectangular pyramid to this rectangular pyramid.When showing this rectangular pyramid, the display driver of these display device 200 inside (figure do not show) can be respectively be provided to first, second, third, fourth pixel P1, P2, P3, P4 in the stereoscopic display unit 212 of correspondence position in this display panel 220 respectively with the view data of this side A, side B, side C and each elementary area correspondence of side D, thereby makes each stereoscopic display unit 212 can show the correspondence image unit of different shooting angles simultaneously.But, should be appreciated that in other embodiments that these four different angles can also be other shooting angle, such as the front take back, the front takes over, wait on the lower side with the front on the upper side in the front.
Please consult Fig. 2 and Fig. 6 once more, this stereoptics film 230 comprises that a substrate 232 is arranged on a plurality of lens units 231 on these substrate 232 surfaces.This a plurality of lens unit 231 is that unit arranges with the row and column, thereby forms a lens arra.Each lens unit 231 corresponds respectively to a stereoscopic display unit 212, and its size is consistent with this stereoscopic display unit 212.Each lens unit 231 is used for the light of stereoscopic display unit 212 ejaculations of correspondence is reflected, and promptly the light that stereoscopic display unit 212 is penetrated comprises the beam split of horizontal direction and vertical direction at least.When this stereoptics film 230 was arranged on the display surface of this display panel 220, each lens unit 231 can cover each pixel in its corresponding stereoscopic display unit 212 (first to fourth pixel P1-P4) substantially.In the present embodiment, this display panel 220 comprises M * N stereoscopic display unit (being 2M * 2N pixel cell), and then this lens arra comprises M * N lens unit 231 accordingly.
As shown in Figure 7 and Figure 8, it is respectively a lens unit 231 positions in the stereoptics film 230 shown in Figure 6 respectively along the diagrammatic cross-section of VII-VII line and VIII-VIII line.Each lens unit 231 can comprise a convex lens structures, particularly, each lens unit 231 comprises incidence surface 2311 and exiting surface 2312, this incidence surface 2311 is for being close to the planar structure on the substrate 232, and this exiting surface 2312 is a curved-surface structure of giving prominence to away from the display surface of this display panel 220.In the present embodiment, the shape of each lens unit 231 is roughly the semiellipsoid structure, and this incidence surface 2311 is oval-shaped planar structure, and this exiting surface 2312 is a half ellipsoidal surface.
The incidence surface 2311 of each lens unit 231 also defines a major axis and a minor axis, and the length breadth ratio of the ratio of this major axis and this minor axis and this pixel 211 is roughly the same.Further, in the present embodiment, because of the shape of each lens unit 231 is roughly the semiellipsoid structure, so as shown in Figures 7 and 8, each lens unit 231 also defines a long-focus fa and a short focal distance f b, and the ratio between this long-focus fa and the short focal distance f b can approximate the length breadth ratio of this pixel 211 greatly.
In addition, in the present embodiment, the shape of each lens unit 231 pairing ellipsoids is basic identical; But, should be appreciated that in other alternate embodiments, for reaching better optical effect, according to the difference of these lens unit 231 positions, the shape of each lens unit 231 (such as the curvature of this part ellipsoid) can be different in this stereoptics film 230.
By above structure, it is the effect that all can watch stereo-picture watching from different perspectives that display device 200 provided by the invention can realize making the user, and can see that in different angles the angle of image is different.Introduce the principle of user below in conjunction with Fig. 9 to Figure 11 at the stereoscopic picture plane that different angles observed.
Under the normal condition, be positioned at the place ahead of this display device 200 as the user, observe this display device 200 with level angle, specifically, when user's eyes place straight line is parallel with a horizontal line O-O of this display device 200, as shown in Figure 9, each lens unit 231 carries out the left and right sides beam split of horizontal direction to the light that each stereoscopic display unit 212 penetrates, be the first pixel P1 of each stereoscopic display unit 212 and the second pixel P2 (perhaps the 3rd pixel P3 and the 3rd pixel P4, be to be that example explains among Fig. 9 with the first pixel P1 and the second pixel P2) after the refraction of light penetrated through lens unit 231 corresponding in this stereoptics film 230, converge to user's left eye and right eye respectively, the user just can watch the image of different angles thus, and experiences stereopsis.Need to prove, in fact, one of ordinary skill in the art can set as required: when watching this stereoscopic display unit 212 with the level angle of roughly overlooking when the user is positioned at the place ahead of this display device 200, after the refraction of the light that the first pixel P1 of this stereoscopic display unit 212 and the second pixel P2 penetrate through lens unit 231 corresponding in this stereoptics film 230, converge to user's left eye and right eye respectively, make the user just can watch the image of different angles, and experience stereopsis; When the user is positioned at the place ahead of this display device 200, watching this stereoscopic display unit 212 with the level angle of roughly looking up, after the refraction of the light that the 3rd pixel P3 of this stereoscopic display unit 212 and the 3rd pixel P4 penetrate through lens unit 231 corresponding in this stereoptics film 230, converge to user's left eye and right eye respectively, make the user just can watch the image of different angles, and experience stereopsis.
Between the water center line O-O of user's eyes place straight line and this display device 200, surpass a critical angle, be tilted to the left when observing this display device 200 such as head with a vertical angle as the user, as shown in figure 10, each lens unit 231 carries out the beam split up and down of vertical direction to the light that each stereoscopic display unit 212 penetrates, be that the first pixel P1 of each stereoscopic display unit 212 and the light of the 3rd pixel P3 ejaculation pass through after the refraction of lens unit 231 corresponding in this stereoptics film 230, converge to user's right eye and left eye respectively, the user also can watch the image of different angles thus, and experiences stereopsis.And between the horizontal central line of user's eyes place straight line and this display device 200 above a critical angle, be tilted to the right when observing this display device 200 such as head with a vertical angle as the user, each lens unit 231 carries out the beam split up and down of vertical direction to the light that each stereoscopic display unit 212 penetrates, promptly as shown in figure 11, after the refraction of the light that second pixel P2 of each stereoscopic display unit 212 and the 4th pixel P4 penetrate through lens unit 231 corresponding in this stereoptics film 230, converge to user's left eye and right eye respectively, the user still can watch the image of different angles thus, and experiences stereopsis.
Compared with prior art, display device 200 provided by the invention, by display surface the stereoptics film 230 that this has lens arra is set at this display panel 220, each lens unit 231 in this stereoptics film 230 comprises a convex lens structures, and then this lens unit 231 can carry out the beam split of horizontal direction and vertical direction to the light that each stereoscopic display unit 212 penetrates at least, further cooperate the stereoscopic display unit 212 that comprises 2 * 2 pixels 211 in the present embodiment, no matter make the user from level or vertically which angle watch image, after the light that capital in each stereoscopic display unit 212 has two pixels 211 to penetrate reflects by corresponding lens unit 231, converge to user's left eye and right eye respectively, the user can not be subjected to the restriction of viewing angle thus, the observation stereo-picture.
See also Figure 12 and Figure 13, Figure 12 is the planar structure synoptic diagram of the display panel of display device second embodiment of the present invention, and Figure 13 is the planar structure synoptic diagram of the stereoptics film of display device second embodiment of the present invention.This display device 300 is similar to the display device 200 that above embodiment is somebody's turn to do, but, each stereoscopic display unit 312 comprises three pixels 311 respectively in the display panel 310 of this display device 300, and three pixels 311 of each stereoscopic display unit 312 can be designated as P1, P2, P3 respectively, preferably, this P1, P2, P3 are isosceles triangle and arrange.This P1, P2, P3 are respectively applied for and are presented at the view data that three different angles shootings obtain.
Under the normal condition, when user's eyes during roughly from level angle observation display device 300, after the refraction of the light that the first pixel P1 of each stereoscopic display unit 312 and the second pixel P2 penetrate through lens unit 331 corresponding in this stereoptics film 330, converge to user's left eye and right eye respectively, make the user watch the image of different angles, experience stereopsis.
When user's head is tilted to the left certain angle, after the refraction of the light that first pixel P1 of each stereoscopic display unit 312 and the 3rd pixel P3 penetrate through lens unit 231 corresponding in this stereoptics film 230, can converge to user's right eye and left eye respectively, make the user watch the image of different angles, experience stereopsis.And when user's head is tilted to the right certain angle, after the refraction of the light that second pixel P2 of each stereoscopic display unit 312 and the 3rd pixel P3 penetrate through lens unit 331 corresponding in this stereoptics film 330, converge to user's left eye and right eye respectively, make the user watch the image of different angles, experience stereopsis.
See also Figure 14, it is for the STRUCTURE DECOMPOSITION figure of display device the 3rd embodiment of the present invention.This display device 400 is similar to the display device 200 that above embodiment is somebody's turn to do, and but, the display panel 220 in this display device 400 is a self-emission panel, as self-emission panels such as plasma panel or organic electroluminescence panel etc.Owing to adopt self-emission panel, so this display device 400 does not need to adopt module backlight.As seen, in the present invention, module backlight is not necessary module.
Yet it is described that the present invention is not limited to above-mentioned embodiment, as: in first embodiment, each stereoscopic display unit 212 included pixel 211 can also be other numbers in this display panel 220, such as 3 * 2,3 * 3,4 * 4,4 * 2 etc.Further, the arrangement mode of each pixel is not limited to rectangular arranging in this stereoscopic display unit 212, can also be trapezoidal such as it and arrange etc.