WO2011088615A1

WO2011088615A1 - Stereoscopic display device and display method

Info

Publication number: WO2011088615A1
Application number: PCT/CN2010/070291
Authority: WO
Inventors: 张晶; 郑华兵
Original assignee: 深圳超多维光电子有限公司
Priority date: 2010-01-20
Filing date: 2010-01-20
Publication date: 2011-07-28
Also published as: CN102232200B; CN102232200A; JP5213275B2; JP2011150344A

Abstract

The invention discloses a stereoscopic display device, which includes a display module, an electrically driven liquid crystal lens array and a driving voltage source. Said display module displays at least two parallax images in one period, and the said at least two parallax images are formed by splitting the complete left eye view and right eye view and then combining them. Said driving voltage source drives the liquid crystal lens array and the images corresponding to the left and right eye view of the at least two parallax images are directed separately to the left and right eye viewing area. It can overcome the problem of lower resolution and improve the imaging definition and quality by the said stereoscopic display device in the invention.

Description

Description stereoscopic display device and display method

Technical field

The present invention relates to a stereoscopic display device and a display method, and more particularly to a high resolution stereoscopic display device and display method. Background technique

Currently, the displays on the market are basically flat display. With the innovation and development of science and technology, Three-Dimensional (3D) stereoscopic display technology came into being. It uses the slight difference of the objects seen by humans through the left and right eyes, that is, parallax, to sense the depth of the object. Thus, the law of stereoscopic images is recognized, artificial means are used to create the parallax of the left and right eyes, and two images with parallax are respectively sent to the left and right eyes, so that the viewer's brain acquires two images with parallax in the left and right eyes. After that, the feeling of seeing the three-dimensional image is produced. Moreover, the three-dimensional display technology initially requires viewers to wear various auxiliary devices to view stereoscopic images, such as wearing stereoscopic images such as 3D helmets, 3D polarized glasses, or shutter glasses, and there is no need for auxiliary equipment. A naked-eye stereoscopic display device capable of viewing stereoscopic images. The naked-eye stereoscopic display device is mainly a grating type 3D stereoscopic display, which is assembled by a conventional two-dimensional (2D) flat panel display (including a liquid crystal display, a plasma display, a field emission display, an organic electroluminescence display, etc.). to make. According to the grating used in combination, it can be divided into a slit grating and a cylindrical grating. Correspondingly, the grating type 3D stereoscopic display can also be realized in two ways: a slit grating type stereoscopic display device and a microlens array stereoscopic display device.

However, the slit grating type stereoscopic display device utilizes a barrier to separate light into left-eye and right-eye directions to form binocular parallax to realize a stereoscopic image, but inevitably blocks part of the light, resulting in a decrease in light utilization efficiency. Since the microlens array stereoscopic display device does not block light, its light utilization efficiency is high with respect to the slit grating type stereoscopic display device. However, the cylindrical grating used in the microlens array stereoscopic display device is fixed and unadjustable due to its own material, such as focal length and pitch.

In response to the above drawbacks, the industry has proposed a stereoscopic display device using an electrically driven liquid crystal lens. A stereoscopic display device using an electrically driven liquid crystal lens, which is assembled from a conventional 2D flat panel display and an electrically driven liquid crystal lens, is proposed in the patent document US Pat. No. 5,493,427, issued on Feb. 20, 1996. The electrically driven liquid crystal lens includes an upper substrate, a lower substrate, a plurality of strip electrodes disposed on the upper substrate, an electrode layer disposed on the lower substrate, and a liquid crystal layer between the strip electrodes and the electrode layer. By applying respective voltages required for the strip electrodes and the electrode layers, an electric field is generated between the upper and lower substrates, and liquid crystal molecules of the liquid crystal layer are driven to be deflected. Moreover, the voltages applied to the different strip electrodes are different, so that the degree of deflection of the liquid crystal molecules of the strip electrodes corresponding to different voltages is also different, resulting in liquid crystal molecules of the strip electrodes corresponding to different voltages when the light is incident. The refractive index is different, so that a liquid crystal lens similar to a cylindrical grating can be formed, so that after the light is incident on the liquid crystal lens, liquid crystal molecules having different refractive indexes are differently refracted, and finally similar to being emitted from the cylindrical grating. Since the liquid crystal lens is formed by electrically driving a strip electrode and an electrode layer, it is possible to flexibly control the voltage applied to the strip electrode and the voltage distribution, and The parameters such as the focal length and the pitch of the liquid crystal lens are adjusted effectively.

However, the imaging principle of the stereoscopic display device using the electrically driven liquid crystal lens is the same as that of the slit grating type stereoscopic display device and the microlens array stereoscopic display device, and the pixels on the display panel of the stereoscopic display device are divided into two columns by columns. For the left and right pixels, the left pixel is used to generate the left eye image, the right pixel is used to generate the right eye image, and the light path is changed by the grating or liquid crystal lens, the left eye image is sent to the left eye view zone, and the right eye image is sent Into the right eye viewport. In this way, the left-eye image occupies half of all the pixels on the display panel, and the right-eye image also occupies half of all the pixels on the display panel, resulting in a half-resolution reduction of the resolution of the display panel, resulting in the clarity and image quality of the current stereoscopic display device. Poor, affecting the marketing application of stereoscopic display devices. Summary of the invention

It is an object of the present invention to provide a stereoscopic display device that improves imaging sharpness and image quality, which can overcome the problem of reduced resolution.

In order to achieve the object of the present invention, a stereoscopic display device includes a display module, an electrically driven liquid crystal lens array, and a driving voltage source, wherein the display module displays at least two parallax images in one cycle, and the at least The two parallax images are combined after splitting the complete left eye view and the right eye view, and the driving voltage source drives the liquid crystal lens array to respectively respectively image corresponding to the left and right eye views in the at least two parallax images The left eye viewing area and the right eye viewing area are directed.

The period includes a first moment and a second moment, and the parallax image displayed in the first moment includes a first left eye image having a half resolution of a complete left eye view and a first right eye having a half resolution of a complete right eye view An image, the driving voltage source driving the liquid crystal lens array to direct the first left eye image and the first right eye image to a left eye viewing area and a right eye viewing area, respectively; a parallax image displayed in the second time The second left eye image after the first left eye image is removed from the complete left eye view and the second right eye image after the first right eye image is removed from the complete right eye view, wherein the first The position of the display module where the image of the left eye is located is the position of the display module where the image of the first right eye is located, and the position of the display module of the image of the second right eye is the display module of the image of the first left eye. a position of the driving voltage source driving the liquid crystal lens array to be shifted by a distance compared to the liquid crystal lens array at the first moment to separate the second left eye image and the second right eye image respectively Viewing area to the left eye and right eye viewing area.

The liquid crystal lens array includes a first substrate, a second substrate, a first electrode, a second electrode, and a liquid crystal layer, and the first electrode includes a plurality of spaced strip electrodes disposed on a surface of the first substrate, The second electrode is disposed on a surface of the second substrate, the liquid crystal layer is disposed between the first electrode and the second electrode, and the driving voltage source controls the plurality of strip electrodes and the A potential difference between the second electrodes forms a liquid crystal lens array, and translation of the liquid crystal lens array is achieved by changing a potential difference between each of the strip electrodes and the second electrode.

Further having a third electrode and a first insulating layer and a second insulating layer between the first electrode and the first substrate, the first insulating layer being disposed between the first electrode and the third electrode; And a fourth electrode and a second insulating layer between the second electrode and the liquid crystal layer, the second insulating layer is located between the second electrode and the fourth electrode, and the fourth electrode comprises a plurality of strips Shape electrode; the driving voltage source, at the first time Driving only the first electrode and the second electrode to form a liquid crystal lens array, driving only the third electrode and the fourth electrode to form a liquid crystal lens array at a second time, and the liquid crystal lens array formed at the second time is opposite to the liquid crystal formed at the first time The lens array translates a distance.

The distance is half of the width of the two view cells belonging to the left eye view and the right eye view in the parallax image.

The period is less than or equal to the maximum time required for the human eye to stay.

The present invention also provides a stereoscopic display method for displaying at least two parallax images in one cycle by using one display module, wherein the at least two parallax images are combined by splitting the left eye view and the right eye view. Each of the parallax images includes a partial image in a left eye view and a right eye view, the partial image being in the parallax image at the same position as in the left eye view or the right eye view; The driving voltage source drives a controllable electrically driven liquid crystal lens array to direct the images belonging to the left and right eye views in each of the parallax images to the left eye viewing area and the right eye viewing area, respectively.

The liquid crystal lens recombines the left and right eye views with reduced resolution so that the left eye in the left eye viewing zone sees the complete left eye view, and the right eye in the right eye view zone sees the complete right eye view, ie The resolution of the left eye view is not reduced, the resolution of the right eye view is not reduced, and the image seen by the viewer is a full resolution view, thereby improving image sharpness and image quality. DRAWINGS

1 is a schematic block diagram of an embodiment of a stereoscopic display device of the present invention.

2 is a schematic view of a liquid crystal lens array module in the first embodiment of the present invention.

Fig. 3 is a schematic view showing the 2D image display by using a liquid crystal lens array in the first embodiment of the present invention. Fig. 4 is a view showing a voltage distribution applied to the first electrode shown in Fig. 2.

Figure 5 is a schematic view showing the lens unit formed by the liquid crystal layer shown in Figure 2;

Figure 6 is a schematic diagram of the voltage curve applied in Figure 5.

Fig. 7 is a schematic view showing the realization of 3D image display using a liquid crystal lens array.

Fig. 8 is a schematic diagram showing the division of a parallax image according to the first embodiment of the present invention.

Fig. 9 is a schematic diagram showing the combination of a parallax image according to the first embodiment of the present invention.

Figure 10 is a schematic view showing a high resolution 3D image of the first embodiment of the present invention.

Figure 11 is a schematic view showing the structure of a liquid crystal lens array in a second embodiment of the present invention.

Fig. 12 is a schematic diagram showing the division of a parallax image in the second embodiment of the present invention.

Figure 13 is a schematic diagram showing the combination of a parallax image according to a second embodiment of the present invention.

Figure 14 is a schematic view showing a high resolution 3D image of a second embodiment of the present invention. detailed description

Embodiments of the present invention will now be fully described with reference to the drawings of the invention. In the drawings, the size and relative dimensions of the layers and regions are exaggerated for clarity.

Please refer to FIG. 1, which is a schematic diagram of an embodiment of a stereoscopic display device of the present invention.

The stereoscopic display device of the present invention comprises a liquid crystal lens array 100 disposed adjacently, a driving voltage source 500, and The display module 300 is displayed. The display module 300 is configured to display a planar image and provide the planar image to the liquid crystal lens array 100. The display module 300 can be a liquid crystal display, a plasma display, a field emission display or an organic electroluminescent display, etc. Although only one panel shape is shown in the figure, the display screen and the display circuit are actually included. The liquid crystal lens array 100 is configured to display a planar image provided by the display module 300 or convert the planar image into a stereoscopic image to display a stereoscopic image.

Please refer to FIG. 2, which is a schematic diagram of a first embodiment of a liquid crystal lens of the present invention.

The liquid crystal lens array 100 includes a first substrate 101, a second substrate 102, a first electrode 103, a second electrode 104, and a liquid crystal layer 105.

The first substrate 101 is disposed opposite to the second substrate 102, and the first substrate 101 is in the shape of a transparent plate, and the material thereof may be transparent glass, quartz or synthetic resin. The second substrate 102 is also in the shape of a transparent flat plate, and the material thereof may also be transparent glass, quartz or synthetic resin.

The first electrode 103 is formed on a surface of the first substrate 101 adjacent to the second substrate 102, and includes a plurality of strip electrodes 1031. Each strip electrode 1031 is spaced apart from each other, and preferably each strip electrode 1031 is spaced apart from each other in parallel, and the spacing between each adjacent strip electrode 1031 is equal (in a specific application) Whether the strip electrode spacing is equal can be determined according to the actual situation, and the spacing is not necessary.

The second electrode 104 is formed on a surface of the second substrate 102 adjacent to the first substrate 101 and disposed opposite to the first electrode 103. The first electrode 103 and the second electrode 104 are both transparent conductive materials, and may be Indium Tin Oxides (ITO), Indium Zinc Oxide (IZO) or amorphous Indium Tin Oxide (a-Indium). Tin Oxides, a-ITO).

The liquid crystal layer 105 is disposed between the first electrode 103 and the second electrode 104 and is sealed between the first substrate 101 and the second substrate 102. A sealed space is formed between the first substrate 101 and the second substrate 102 by dropping ultraviolet rays (Ultraviolet Rays, UV) glue and exposing and curing at opposite edges between the first substrate 101 and the second substrate 102. The sealed space is for housing the liquid crystal layer 105. The liquid crystal layer 105 includes liquid crystal molecules 1051. The liquid crystal molecules 1051 have a long particle shape, and the longer segment direction of the long particle shape is a long axis direction. The liquid crystal molecules 1051 are deflected by the electric field between the first electrode 103 and the second electrode 104, and the long axis direction also changes. In the present embodiment, the liquid crystal molecules 1051 are exemplified by liquid crystal molecules having positive dielectric anisotropy.

In order to obtain a 2D image display effect, the potential difference between the first electrode 103 and the second electrode 104 is zero, and the long-axis direction of the liquid crystal molecules 1051 of the liquid crystal layer 105 is parallel to the first substrate 101 and the second substrate 102. . When the light illuminates the liquid crystal lens array 100 in a direction perpendicular to the second substrate 102, a polarizer may be disposed outside the liquid crystal lens array 100 such that a polarization direction of the light and a long axis of the liquid crystal molecule 1051 The directions are parallel. The light passes through the second substrate 102, the second electrode 104, the liquid crystal layer 105, the first electrode 103, and the first substrate 101 in sequence, and the viewer in front of the liquid crystal lens array 100 will see a 2D image, as shown in FIG. Shown.

In order to obtain a 3D image display effect, a fixed voltage is applied to the second electrode 104 by the driving voltage source 500, and a different voltage is applied to each strip electrode 1031 of the first electrode 103, and adjacent strip electrodes are applied. The voltage applied by 1031 is different, as shown in Figure 4. With the first electrode 103 For example, n continuous strip electrodes 1031 are applied. The first strip electrode 1031 applies the lowest voltage, which is Vmin, and the voltage applied by the nth strip electrode 1031 is the largest, which is Vmax. The voltage applied by the n strip electrodes 1031 sequentially increases in the direction from the first strip electrode 1031 to the nth strip electrode 1031. Further, with the first strip electrode 1031 as an axis of symmetry, the voltage applied by the strip electrodes 1031 in the direction from the first strip electrode 1031 to the nth strip electrodes 1031 on both sides symmetry. From the direction of the first strip electrode 1031 to the nth strip electrode 1031 on both sides, the liquid crystal molecules 1051 corresponding to the strip electrode 1031 to which a smaller voltage is applied are less deflected, and a larger voltage is applied than the corresponding one. The liquid crystal molecules 1051 of the strip electrodes 1031 are deflected to a greater extent, and the liquid crystal molecules 1051 of different deflection degrees have different refractive indices, thereby forming a lens structure. Similarly, a plurality of identical lens structures can be produced, and the plurality of lens structures are disposed adjacent to each other.

For convenience of description, it is prescribed that each lens structure formed by the liquid crystal lens array 100 is a lens unit 1052 whose center line is represented by 0, and the edge of the lens unit 1052 is represented by E, as shown in FIG. . The strip electrode 1031 corresponding to n the first electrodes 103 is located between the center line 0 and the edge E of the same lens unit 1052, and the voltage applied by the strip electrode 1031 is a gradient from the center line 0 to the edge E. The voltage applied by the strip electrode 1031 at the center line 0 is the smallest, Vmin, min is greater than or equal to the voltage threshold V at which the liquid crystal molecules 1051 are deflected, wherein = (where Δε is the dielectric constant of the liquid crystal) The opposite sex, !^ is the elastic coefficient of the liquid crystal layer,

Is the free space dielectric constant). Far from the center line 0 to the edge Ε, the voltage applied by the strip electrode 1031 is sequentially increased, and the voltage applied to the strip electrode 1031 at the edge 最大 is the largest, which is Vmax. Further, the voltage applied from the strip electrode 1031 in the direction from the center line 0 to the edge E of the same lens unit 1052 is symmetrical with respect to the center line 0 as the axis of symmetry.

It should be particularly noted that the voltage applied by the strip electrode 1031 may be increased by the same amount in the direction from the center line 0 to the edge E, or may be increased by a small amount, or increased by a larger amount, or increased by a larger amount. A smaller amount is added, which can be flexibly set according to the desired display effect. Referring to Fig. 6, a voltage applied by a lens unit 1052 is taken as an example.

When the light illuminates the liquid crystal lens array 100 in a direction perpendicular to the second substrate 102, passing through the transparent second substrate 102 and the second electrode 104, reaching any of the lens units 1052, from the center line In the direction from 0 to the edge E, the liquid crystal molecules 1051 of different degrees of deflection have different refractive indices for the light, so that the liquid crystal lens array 100 is similar to the cylindrical grating, so that its effect on light is also similar to that of the cylindrical grating. If the ray is a left eye view L and a right eye view R with parallax, the left eye view L may be transmitted through the lens unit 1052 to a left eye viewing zone (also referred to as a left eye viewing area), The right eye view R can be transmitted through the lens unit 1052 to the right eye viewing zone (also referred to as the right eye viewing area). When the distance between the left eye viewing zone and the right eye viewing zone is the distance between the left and right eyes of the viewer, the viewer will see the 3D image, as shown in FIG.

Further, in order to achieve a high-resolution 3D image display effect, the voltage applied by the strip electrode 1031 of the first electrode 103 is periodically translated in the direction from the center line 0 to the edge E, so that the liquid crystal lens array The lens unit 1052 of 100 has fluidity, that is, the liquid crystal lens array 100 The lens unit 1052 moves in the direction from the center line 0 to the edge E, and in the case of continuous movement, the lens unit 1052 of the liquid crystal lens array 100 appears to have fluidity.

Specifically, it is referred to from the planar image supplied from the display module 300 to the liquid crystal lens array 100, and is shown in FIG. Usually, the viewer wants to see a stereoscopic image whose left and right eyes respectively receive a left eye view L and a right eye view R with parallax. Dividing a frame of left-eye view L into two views displayed in two adjacent frames, such as a first left-eye view 10 displayed at a first time and a second left-eye view 20 displayed at a second time, the first left eye The view 10 and the second left-eye view 20 form a complete left-eye view L; divide one frame of the right-eye view R into two views displayed in two adjacent frames, such as the first right-eye view 30 displayed at the first moment. And a second right eye view 40 displayed at a second moment, the first right eye view 30 and the second right eye view 40 forming a complete right eye view R. Since the first time and the second time are less than or equal to the maximum time required for the human eye to stay, the human eye has a visual pause, the left eye of the person can feel the complete left eye view L, and the right eye of the person can Feel the full right eye view 1.

The first left-eye view 10 includes a plurality of view cells L1 arranged in parallel at equal intervals, and a blank file B_L1 exists between adjacent view cells L1. Although it is uniformly represented by L1 here, it does not necessarily mean that all views L1 are the same display content, only that it constitutes the first left-eye view 10 of the first time display. The same applies to the plurality of equally spaced parallel view cells L2 included in the second left eye view 20, the first right eye view 30 comprising a plurality of equally spaced parallel views R1 and second right eye views 40 included A plurality of view cells R2 arranged in parallel at equal intervals. There is a blank file B_L2 between adjacent views L2, a blank file B_R1 exists between adjacent views R1, and a blank file B_R2 exists between adjacent view units R2. The blanks B_L1, B_L2, B_R1 and B_R2 are equal in size. In addition, the position of the view unit L1 of the first left-eye view 10 corresponds to the blank position B_R1 of the first right-eye view 30, and the position of the view unit R1 of the first right-eye view 30 corresponds to the first left-eye view of the display screen. The blank file 8_1^1 of 10; that is, the first left-eye view 10 and the first right-eye view 30 constitute an image on the entire display screen at the first time. The position of the view unit L2 of the second left-eye view 20 corresponds to the blank position B_R2 of the second right-eye view 40, and the position of the view unit R2 of the second right-eye view 40 corresponds to the position of the second left-eye view 20 of the second right-eye view 40. The blank file B_L2, that is, the second left eye view 10 and the second right eye view 30 constitute an image on the entire display screen at the second time.

Combining the first left-eye view 10 displayed at the first moment with the first right-eye view 30 displayed at the first moment, the view unit L1 occupies the blank file B_R1 of the first right-eye view 30, and the view unit R1 occupies the first left eye The blank file B_L1 of the view 10 forms the image T1 at the first moment, as shown in FIG. Similarly, the second left-eye view 20 displayed at the second time and the second right-eye view 40 displayed at the second time are combined, the view unit L2 occupies the blank B_R2 of the second right-eye view 40, and the view unit R2 occupies the The blank file B_L2 of the two left eye views 20 forms the image T2 at the second time.

The first moment and the second moment are two moments that are connected, and preferably the duration of the first moment is equal to the duration of the second moment. If the refresh rate of the display module 300 is 120 Ηζ, the image T1 at the first time is displayed using 60 Hz therein, and the image Τ2 at the second time is displayed at 60 Hz, and within the 120 Hz, the first time The image T1 and the image T2 at the second time are alternately displayed.

In the embodiment, the first time and the second time in one refresh cycle of the display module 300 are used. As an example to illustrate.

Please refer to FIG. 10, which is a schematic diagram showing a high resolution 3D image of the first embodiment of the present invention. At the first moment, the display module 300 displays the image T1 at the first moment. The lens unit 1052 of the liquid crystal lens array 100 corresponds to the view unit L1 and the view unit R1 of the image T1 at the first moment, and the view unit L1 and the view unit R1 are symmetric with respect to the center line 0. The view unit L1 is transmitted to the left eye viewing zone via the lens unit 1052, and the view unit R1 is transmitted to the right eye viewing zone via the lens unit 1052, as indicated by the solid line in FIG.

At the second moment, the voltage applied by the strip electrode 1031 of the first electrode 103 translates the view unit L1 pitch along the direction from the center line 0 to the edge E, so that the liquid crystal lens array 100 moves the view unit L1 pitch. (Or moving the adjacent sub-portions belonging to the left eye view and the half view of the two view cells of the right eye view), at this time, the display module 300 displays the image T2 at the second moment. The lens unit 1052 of the liquid crystal lens array 100 corresponds to the view unit L2 of the image Τ2 at the second moment and the view unit R2, and the view unit L2 and the view unit R2 are symmetrical about the center line 0. The view unit L2 is transmitted to the left eye viewing zone via the lens unit 1052, and the view unit R2 is transmitted to the right eye viewing zone via the lens unit 1052, as indicated by the dashed line in FIG.

Thus, in the time interval between the first moment and the second moment, the left eye in the left eye viewing zone sees the complete left eye view L, and the right eye in the right eye viewing zone sees the complete right eye view R, ie left The eye view L is not halved, and the right eye view R is not halved. The image seen by the viewer is a full resolution view with no loss of resolution.

In the present embodiment, the images T1 and Τ2 displayed by the first and second moments of the display module 300 are combined views of the left-eye view L and the right-eye view R, and the minimum of the left-eye view L and the right-eye view R are divided. The unit is the view unit L1, L2, R1 or R2. The distance that the liquid crystal lens array 100 moves between the first and second moments is the pitch of the view cells L1, L2, R1 or R2. The present invention is not limited to the embodiment, and the left-eye view L and the right-eye view R may be respectively divided into multiple maps larger than 2, and the distance moved by the liquid crystal lens array 100 at different times is the minimum unit of the view division with parallax. Pitch.

Please refer to FIG. 11, which is a schematic structural diagram of a liquid crystal lens array in a second embodiment of the present invention. The liquid crystal lens array 200 includes a first substrate 201, a second substrate 202, a first electrode 203, a second electrode 204, a third electrode 205, a fourth electrode 206, a first insulating layer 207, a second insulating layer 208, and a liquid crystal layer 209. .

The first substrate 201 is disposed opposite to the second substrate 202, and the first substrate 201 is in the shape of a transparent plate, and the material thereof may be transparent glass, quartz or synthetic resin. The second substrate 202 is also in the shape of a transparent flat plate, and the material thereof may also be transparent glass, quartz or synthetic resin.

The third electrode 205 is formed on a surface of the first substrate 201 adjacent to the second substrate 202. The first insulating layer 207 is formed on the surface of the third electrode 205 adjacent to the second substrate 202 and is a transparent material.

The first electrode 203 is formed on the surface of the first insulating layer 207 adjacent to the second substrate 202 and includes a plurality of strip electrodes 2031. Each strip electrode 2031 is spaced apart from each other, and preferably each strip electrode 2031 is spaced apart from each other in parallel, and between each adjacent strip electrode 2031 The distance is equal (in the specific application, whether the strip electrode spacing is equal can be determined according to the actual situation, the spacing is not necessary).

The second electrode 204 is formed on a surface of the second substrate 202 adjacent to the first substrate 201 and disposed opposite to the first electrode 203.

The second insulating layer 208 is formed on the surface of the second electrode 204 adjacent to the first substrate 201, and is also transparent and disposed opposite to the first insulating layer 207.

The fourth electrode 206 is formed on the surface of the second insulating layer 208 adjacent to the first substrate 201, and includes a plurality of strip electrodes 2061. Each strip electrode 2061 is spaced apart from each other, and preferably each strip electrode 2061 is spaced apart from each other in parallel, and the spacing between each adjacent strip electrode 2061 is equal. The line between the strip electrode 2061 of the fourth electrode 206 and the strip electrode 2031 of the closest first electrode 203 may be perpendicular to the plane of the second substrate 202, or may be non-vertical, that is, The strip electrode 2061 of the fourth electrode 206 and the strip electrode 2031 of the closest third electrode 203 may face each other or be offset, as shown in FIG.

The first electrode 203, the second electrode 204, the third electrode 205, and the fourth electrode 206 are all transparent conductive materials, and may be ITO, germanium or a-ITO.

The liquid crystal layer 209 is sealed between the first substrate 201 and the second substrate 202. A sealing space is formed between the first substrate 201 and the second substrate 202 by dropping UV glue and exposing and curing at the opposite edges between the first substrate 201 and the second substrate 202. The sealed space is used for a shelter. The liquid crystal layer 209 is described. The liquid crystal layer 209 includes liquid crystal molecules 2091. The liquid crystal molecules 2091 have a long particle shape, and the longer segment direction of the long particle shape is a long axis direction.

In order to obtain a 2D image display effect, the potential difference between the first electrode 203, the second electrode 204, the third electrode 205, and the fourth electrode 206 is zero, and the long-axis direction of the liquid crystal molecules 2091 of the liquid crystal layer 209 is parallel to The first substrate 201 and the second substrate 202. The light ray is irradiated to the liquid crystal lens array 200 in a direction perpendicular to the second substrate 202, and a polarizer may be disposed outside the liquid crystal lens array 200 such that a polarization direction of the light and a long axis direction of the liquid crystal molecule 2091 parallel. The light passes through the second substrate 202, the second electrode 204, the second insulating layer 208, the fourth electrode 206, the liquid crystal layer 209, the third electrode 203, the first insulating layer 207, the first electrode 205, and the first A substrate 201, a viewer in front of the liquid crystal lens array 200, will see a 2D image.

In order to obtain a 3D image display effect, different voltages are applied to each strip electrode 2031 of the first electrode 103 by the driving voltage source 500, and voltages applied by adjacent strip electrodes 2031 are different to the second electrode. A fixed voltage is applied to the 204, and the third electrode 205 is grounded, and the fourth electrode 206 is not applied with a voltage to form a liquid crystal lens array. Alternatively, different voltages are applied to each of the strip electrodes 2061 of the fourth electrode 206, the voltage applied by the adjacent strip electrodes 2061 is different, a fixed voltage is applied to the third electrode 205, and the second The electrode 204 is grounded, and the first electrode 203 is not applied with a voltage. It is similar to the description of the first embodiment in order to obtain a 3D image display effect, and details are not described herein again.

Further, in order to achieve a high-resolution 3D image display effect, voltages applied by the strip electrodes 2031 of the first electrode 203 and the strip electrodes 2061 of the fourth electrode 206 alternate with each other such that the liquid crystal lens array The lens unit 2092 of 200 moves in the direction of the center line 0 to the edge E. And FIG. 13 is a schematic diagram showing the division of a parallax image according to a second embodiment of the present invention, and FIG. 14 is a view of the present invention. A second embodiment is a schematic diagram of a combination of parallax images.

At a first moment, a plurality of strip electrodes 2031 of the first electrode 203 apply a periodic voltage, the second electrode 204 applies a fixed voltage, and the third electrode 205 is grounded or no voltage is applied, and the fourth electrode 206 Without applying a voltage, a liquid crystal lens array at a first moment is formed. The display module displays the image T1 at the first moment. The lens unit 2092 of the liquid crystal lens array 200 corresponds to the view unit L1 and the view unit R1 of the image T1 at the first moment, and the view unit L1 and the view unit R1 are symmetric with respect to the center line 0. View unit L1 is transmitted through lens unit 2092 to the left eye viewing zone, and view unit R1 is transmitted through lens unit 2092 to the right eye viewing zone, as indicated by the solid line in FIG.

At a second time, the plurality of strip electrodes 2061 of the fourth electrode 206 apply a periodic voltage, the third electrode 205 applies a fixed voltage, and the second electrode 204 is grounded or not applied with a voltage, and the first electrode 203 No voltage is applied. Compared with the first moment, the lens unit 2092 of the liquid crystal lens array formed at the second moment shifts the pitch of the view unit L1 along the direction from the center line 0 to the edge E, and the display module displays the image at the second moment. T2. The lens unit 2092 of the liquid crystal lens array 200 corresponds to the view unit L2 of the image Τ2 at the second moment and the view unit R2, and the view unit L2 and the view unit R2 are symmetrical about the center line 0. The view unit L2 is transmitted to the left eye viewing zone via the lens unit 200, and the view unit R2 is transmitted to the right eye viewing zone via the lens unit 200, as indicated by the broken line in FIG.

Thus, in the time period of the first moment and the second moment, the left eye in the left eye viewing zone sees the complete left eye view, and the right eye in the right eye viewing zone sees the complete right eye view, ie the left eye view Without being halved, the right eye view is not halved. The image seen by the viewer is a full resolution view with no loss of resolution.

The high resolution display embodying the present invention is not limited to the two liquid crystal lens array structures exemplified in the embodiments, and the object of the present invention can be achieved by an electrically controllable electrically driven liquid crystal lens array.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the scope of the method and the scope of the claims. Deformation, these are all within the scope of the present invention.

Claims

Claim

A stereoscopic display device comprising a display module, an electrically driven liquid crystal lens array and a driving voltage source, wherein: the display module displays at least two parallax images in one cycle, and the at least two parallaxes The image is assembled by splitting the complete left-eye view and the right-eye view, and the driving voltage source drives the liquid crystal lens array to direct the images of the corresponding left and right eye views of the at least two parallax images to the left eye respectively The viewing area and the right eye viewing area.

2. The stereoscopic display device according to claim 1, wherein: the period includes a first time and a second time, and the parallax image displayed in the first time comprises a first half resolution with a complete left eye view a left eye image and a first right eye image having a half resolution of a complete right eye view, the driving voltage source driving the liquid crystal lens array to direct the first left eye image and the first right eye image to the left eye, respectively a viewing area and a right eye viewing area; the disparity image displayed in the second moment includes removing the second left eye image after removing the first left eye image from the full left eye view and removing the first from the complete right eye view a second right-eye image after the image of the right eye, wherein the position of the display module where the second left-eye image is located is the position of the display module where the first right-eye image is located, and the second right-eye image is The position of the display module is the position of the display module where the first left eye image is located, and the driving voltage source drives the liquid crystal lens array to translate one by one compared with the liquid crystal lens array at the first moment. The distance is to guide the second left eye image and the second right eye image to the left eye viewing area and the right eye viewing area, respectively.

The stereoscopic display device according to claim 2, wherein: the liquid crystal lens array comprises a first substrate, a second substrate, a first electrode, a second electrode, and a liquid crystal layer, wherein the first electrode comprises a plurality of a strip electrode disposed at intervals, disposed on a surface of the first substrate, the second electrode disposed on a surface of the second substrate, the liquid crystal layer being disposed between the first electrode and the second electrode The driving voltage source forms a liquid crystal lens array by controlling a potential difference between the plurality of strip electrodes and the second electrode, and changes a potential difference between each of the strip electrodes and the second electrode Achieving translation of the liquid crystal lens array.

The stereoscopic display device according to claim 3, further comprising: a third electrode and a first insulating layer and a second insulating layer between the first electrode and the first substrate, An insulating layer is disposed between the first electrode and the third electrode; a fourth electrode and a second insulating layer are further disposed between the second electrode and the liquid crystal layer, and the second insulating layer is located at the second Between the electrode and the fourth electrode, the fourth electrode comprises a plurality of strip electrodes; the driving voltage source drives only the first electrode and the second electrode to form a liquid crystal lens array at a first moment, and only drives at a second moment The third electrode and the fourth electrode form a liquid crystal lens array, and the liquid crystal lens array formed at the second time is translated by a distance with respect to the liquid crystal lens array formed at the first time.

The stereoscopic display device according to any one of claims 2 to 4, wherein: The distance is half the width of the two view cells belonging to the left eye view and the right eye view in the parallax image.

The stereoscopic display device according to any one of claims 1 to 4, wherein the period is less than or equal to the maximum time required for the human eye to stay.

7. A stereoscopic display method, characterized in that

At least two parallax images are displayed in one cycle by using one display module, wherein the at least two parallax images are combined by splitting the left eye view and the right eye view, and each of the parallax images includes a left eye a partial image in the view and the right eye view, the position of the partial image in the parallax image being the same as the position in the left eye view or the right eye view;

An image of the left and right eye views in each of the parallax images is directed to the left eye viewing area and the right eye viewing area by driving a controllable electrically driven liquid crystal lens array using a driving voltage source.

The stereoscopic display method according to claim 7, wherein the period includes a first time and a second time, and the parallax image displayed in the first time includes a first half resolution with a complete left eye view a left eye image and a first right eye image having a half resolution of a complete right eye view, the driving voltage source driving the liquid crystal lens array to direct the first left eye image and the first right eye image to the left eye, respectively a viewing area and a right eye viewing area; the disparity image displayed in the second moment includes removing the second left eye image after removing the first left eye image from the full left eye view and removing the first from the complete right eye view a second right-eye image after the image of the right eye, wherein the position of the display module where the second left-eye image is located is the position of the display module where the first right-eye image is located, and the second right-eye image is The position of the display module is the position of the display module where the first left eye image is located, and the driving voltage source drives the liquid crystal lens array to translate one by one compared with the liquid crystal lens array at the first moment. The distance is to guide the second left eye image and the second right eye image to the left eye viewing area and the right eye viewing area, respectively.

The stereoscopic display method according to claim 8, wherein the liquid crystal lens array includes a first substrate, a second substrate, a first electrode, a second electrode, and a liquid crystal layer, and the first electrode includes a plurality of a strip electrode disposed at intervals, disposed on a surface of the first substrate, the second electrode disposed on a surface of the second substrate, the liquid crystal layer being disposed between the first electrode and the second electrode The driving voltage source forms a liquid crystal lens array by controlling a potential difference between the plurality of strip electrodes and the second electrode, and changes a potential difference between each of the strip electrodes and the second electrode Achieving translation of the liquid crystal lens array.

The stereoscopic display method according to claim 9, further comprising a third electrode and a first insulating layer and a second insulating layer between the first electrode and the first substrate, An insulating layer is disposed between the first electrode and the third electrode; a fourth electrode and a second insulating layer are further disposed between the second electrode and the liquid crystal layer, and the second insulating layer is located at the second Between the electrode and the fourth electrode, the first The four electrodes comprise a plurality of strip electrodes; the driving voltage source drives only the first electrode and the second electrode to form a liquid crystal lens array at a first moment, and drives only the third electrode and the fourth electrode to form a liquid crystal lens array at a second moment And the liquid crystal lens array formed at the second moment is translated by a distance with respect to the liquid crystal lens array formed at the first moment.

The stereoscopic display method according to any one of claims 8 to 10, wherein the distance is two view units of adjacent ones of the parallax images belonging to a left eye view and a right eye view. Half of the width.

The stereoscopic display method according to any one of claims 7 to 10, characterized in that the period is less than or equal to the longest time required for the human eye to stay.