CN102799010B - Liquid crystal display for displaying stereoscopic images - Google Patents

Abstract

The present invention discloses a liquid crystal display for displaying three-dimensional images, which comprises a first substrate, an electrode array, a dielectric layer, a first alignment layer, a liquid crystal layer, a second alignment layer, a common electrode layer and a second substrate in sequence. The electrode array comprises a first potential main line, a second potential main line, a plurality of first potential branches and a plurality of second potential branches. When a first voltage is applied to the first potential main line and the first potential branch, and a second voltage is applied to the second potential main line and the second potential branch, the refractive index effect of the liquid crystal arrangement of the liquid crystal layer is equivalent to that of a convex lens array.

Description

Liquid crystal display for displaying stereoscopic images

technical field

The present invention relates to a liquid crystal display for displaying stereoscopic images, and in particular to a liquid crystal display for displaying stereoscopic images with naked eyes.

Background technique

Liquid Crystal Display (LCD) has the advantages of high image quality, small size, light weight, low voltage drive, low power consumption and wide application range, so it has been widely used in portable TVs, mobile phones, video cameras, etc. In consumer electronics or computer products such as video projectors, notebook computers, and desktop displays, displays have become the mainstream.

With the development of technology, the stereoscopic image display function has become the development trend of the display. The principle of stereoscopic image display is to superimpose the images of the left and right eyes, and use the persistence of vision to synthesize a stereoscopic image in the brain. Existing stereoscopic image display technologies can be roughly classified into two types: glasses-type and naked-view-type. Glasses can be divided into shutter glasses, polarization glasses, anaglyph glasses, head mount displays, etc. Naked vision can be divided into holographic, volumetric, and multiplexed 2-D. Since the glasses-type stereoscopic image display technology requires users to wear glasses, it is easy to cause discomfort to users and problems in equipment maintenance.

Contents of the invention

Therefore, the object of the present invention is to provide a liquid crystal display for displaying stereoscopic images.

According to an embodiment of the present invention, a liquid crystal display for displaying stereoscopic images is proposed, comprising a first substrate, an electrode array, a dielectric layer, a first alignment layer, a second alignment layer, a second substrate, a A common electrode layer, and a liquid crystal layer. The electrode array is formed on the first substrate, and the electrode array includes a first potential main line, a second potential main line, multiple first potential branch lines and multiple second potential branch lines. The first potential main line is located on one side of the first substrate and has a plurality of first nodes. The first potential branch line is branched from the first node, and the first potential branch line is perpendicular to the first potential main line. The second potential main line surrounds the outer edge of the first substrate and has a plurality of second nodes. The second potential branch line is branched from the second node, the second potential branch line is perpendicular to the second potential main line, and the first potential branch line and the second potential branch line are arranged alternately. The dielectric layer is formed on the electrode array. The first alignment layer is disposed on the dielectric layer. The common electrode layer is formed on the second substrate. The second alignment layer is disposed on the common electrode layer. The liquid crystal layer is interposed between the first alignment layer and the second alignment layer, wherein when the first voltage is applied to the first potential main line and the first potential branch line respectively, and the second voltage is applied to the second potential main line and the second potential branch line When , the refractive index effect of the liquid crystal arrangement of the liquid crystal layer is equivalent to that of the convex lens array.

In one embodiment, the electrode array further includes a third potential main line and a plurality of third potential branch lines. The third potential main line is disposed on the other side of the first substrate relative to the first potential main line, and has a plurality of third nodes. The third potential branch line is branched from the third node, and the third potential branch line is perpendicular to the third potential main line. Wherein the first potential branch line, the second potential branch line and the third potential branch line are alternately arranged. The first potential branch line and the third potential branch line are arranged in a fork shape in a group of multiple groups. The first potential main line further includes an extension section connecting the first node and the first potential main line, and the third potential main line further includes an extension section connecting the third node and the third potential main line. The second potential branch lines are in multiple groups, and each group of second potential branch lines includes a wire connected to the opposite second potential main line. Each set of second potential branch lines includes bent lines wound between the first potential branch lines, wherein the bent lines are bow-shaped and wound between the first potential branch lines. The common electrode layer can completely cover the surface of the second substrate facing the liquid crystal layer. The arrangement order of the first potential branch line, the second potential branch line and the third potential branch line is the first potential branch line, the second potential branch line, the third potential branch line, and the second potential branch line, and this cycle is repeated.

Yet another embodiment of the present invention is a liquid crystal display for displaying stereoscopic images, comprising a first substrate, an electrode array, a dielectric layer, a first alignment layer, a second substrate, a common electrode layer, a first Two alignment layers and a liquid crystal layer. The electrode array includes a first potential main line, a second potential main line, multiple first potential branch lines and multiple second potential branch lines. The first potential branch line is branched from the first potential main line, and the first potential branch line is perpendicular to the first potential main line. The second potential main line is located on the same side of the first substrate as the first potential main line. The second potential branch line is branched from the second potential main line, the second potential branch line is perpendicular to the second potential main line, and the first potential branch line and the second potential branch line are arranged alternately. The dielectric layer is formed on the electrode array. The first alignment layer is disposed on the dielectric layer. The common electrode layer is formed on the second substrate. The second alignment layer is disposed on the second electrode. The liquid crystal layer is sandwiched between the first alignment layer and the second alignment layer. When the first voltage is applied to the first potential main line and the first potential branch line, and the second voltage is applied to the second potential main line and the second potential branch line respectively, the refractive index effect of the liquid crystal arrangement of the liquid crystal layer is equivalent to that of the convex lens array. The electrode array also includes a third potential main line and a plurality of third potential branch lines. The third potential main line and the first potential main line are located on the same side of the first substrate. The third potential branch line is branched from the third potential main line, and the third potential branch line is perpendicular to the third potential main line. Wherein the first potential branch line, the second potential branch line and the third potential branch line are alternately arranged. The common electrode layer can completely cover the surface of the second substrate facing the liquid crystal layer. The arrangement order of the first potential branch line, the second potential branch line and the third potential branch line is the first potential branch line, the second potential branch line, the third potential branch line, and the second potential branch line, and this cycle is repeated.

Through the dielectric layer on the electrode array, the operating voltage in the liquid crystal layer can be reduced, making the change of the electric field more uniform and improving the quality of phase formation. The wiring design of the electrode array can effectively save the space required for wiring and facilitate the supply of voltage.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the detailed description of the accompanying drawings is as follows:

FIG. 1 shows an exploded view of an embodiment of a liquid crystal display for displaying stereoscopic images according to the present invention;

2A and 2B are cross-sectional views of the liquid crystal display for displaying stereoscopic images in FIG. 1 at different phases;

FIG. 3 shows a schematic diagram of an embodiment of an electrode array in a liquid crystal display for displaying stereoscopic images of the present invention;

FIG. 4 is a schematic diagram of another embodiment of the electrode array of the liquid crystal display for displaying stereoscopic images of the present invention.

[Description of main component symbols]

100: Liquid crystal display 220: Second potential main line

110: First substrate 222: Second node

120: electrode array 224: extension section

122: The first potential branch line 230: The first potential branch line

124: Second potential branch line 240: Second potential branch line

126: Third potential branch line 250: Third potential main line

130: Dielectric layer 252: The third node

140: first alignment layer 254: extension

150: liquid crystal layer 260: third potential branch line

152: Lens segment 300: Electrode array

160: Second alignment layer 302: First substrate

170: common electrode layer 310: first potential main line

180: second substrate 320: second potential main line

200: electrode array 330: first potential branch line

202: The first substrate 340: The second potential branch line

210: The main line of the first potential 350: The main line of the third potential

212: The first node 360: The third potential branch line

214: extension

Detailed ways

The following will clearly illustrate the spirit of the present invention with the accompanying drawings and detailed descriptions. After any person with ordinary knowledge in the art understands the preferred embodiments of the present invention, he can change and modify it by the technology taught in the present invention. without departing from the spirit and scope of the present invention.

Referring to FIG. 1 , it shows an exploded view of an embodiment of a liquid crystal display for displaying stereoscopic images of the present invention. The liquid crystal display 100 for displaying stereoscopic images includes a first substrate 110 , an electrode array 120 , a dielectric layer 130 , a first alignment layer 140 , a liquid crystal layer 150 , a second alignment layer 160 , a common electrode layer 170 , and a second substrate 180 . The electrode array 120 is formed on the first substrate 110 , the dielectric layer 130 is formed on the electrode array 120 , and the first alignment layer 140 is disposed on the dielectric layer 130 . The common electrode layer 170 is formed on the second substrate 180 , and the second alignment layer 160 is disposed on the common electrode layer 170 . The liquid crystal layer 150 is sandwiched between the first alignment layer 140 and the second alignment layer 160 .

The liquid crystal display 100 applies different voltage values to the electrode array 120, and changes the twisting direction of the liquid crystal in the liquid crystal layer 150 through the gradual change of the electric field, so that the liquid crystal in the liquid crystal layer 150 is distributed along a specific shape, and the optical refractive index of this arrangement is The effect is equivalent to a convex lens, so that the light is focused on multiple focal points after passing through, and can provide multiple viewing angles to display stereoscopic images. The dielectric layer 130 with a specific impedance value is distributed on the electrode array 120, which can effectively make the electric field gradually more uniform.

The aforementioned first substrate 110 and second substrate 180 may be rigid transparent substrates, such as glass substrates or plastic substrates. The first substrate 110 is a lower substrate, and the second substrate 180 is an upper substrate. At this time, the electrode array 120 is the lower electrode, the common electrode layer 170 is the upper electrode, and the voltage is applied from the lower electrode. The material of the electrodes of the electrode array 120 and the common electrode layer 170 is preferably a transparent conductive material, such as indium tin oxide (Indium Tin Oxide; ITO), indium zinc oxide (Indium Zinc Oxide; IZO) or zinc oxide (ZincOxide). ). The material of the first alignment layer 140 and the second alignment layer 160 may be polyimide (PI), which is used to align the direction of the liquid crystal.

The material of the dielectric layer 130 can be a transparent resin or a dielectric material, and its impedance ranges from 10-1010 ohms. The material of the dielectric layer 130 can be aluminum nitride (AZO), indium gallium zinc oxide (IGZO), zinc oxide (ZnO), niobium oxide (NbO), titanium oxide (TiO ₂ ), tin dioxide (SnO ₂ ), tin pentoxide (SnO ₅ ), aluminum oxide (Al ₂ O ₃ ), hafnium dioxide (HfO ₂ ), tantalum oxide (Ta ₂ O5), sulfur phosphide (SP ₃ ), amorphous silicon ( a-Si) etc. Alternatively, the material of the dielectric layer 130 may be a PEDOT based material, such as poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) (poly(3,4-ethylenedioxythiophene):poly(tyrenesulfonate); PEDOT:PSS). In other embodiments, it is more optional to have another dielectric layer between the common electrode layer 170 and the liquid crystal layer 150 .

In the following embodiments, the same or similar materials are used, which will not be repeated here.

Referring to FIG. 2A and FIG. 2B , they illustrate cross-sectional views of the liquid crystal display for displaying stereoscopic images in FIG. 1 in different phases. The electrode array 120 includes a plurality of first potential branch lines 122 and a plurality of second potential branch lines 124 , and the first potential branch lines 122 and the second potential branch lines 124 are arranged alternately. The common electrode layer 170 completely covers the surface of the second substrate 180 facing the liquid crystal layer 150 , and the common electrode layer 170 can be used as a ground plane.

When it is desired to display a stereoscopic image, the first voltage is applied to the first potential branch line 122 and the second voltage is applied to the second potential branch line 124. The first potential branch line 122 and the second potential branch line 124 will have different potentials, and at the second A gradually changing electric field is formed between the first potential branch line 122 and the second potential branch line 124 . The twisting direction of the liquid crystal molecules in the liquid crystal layer 150 is affected by the electric field, and presents a convex lens array equivalent to a plurality of lens segments 152 in terms of refractive index optical effect (the twisting direction of the liquid crystal is shown by its optical effect in the figure). In other words, in each lens segment 152 , the intensity of the electric field varies along the width direction of the lens segment 152 , so that the liquid crystal molecules in each lens segment 152 are reoriented.

For example, in a time phase, as shown in FIG. 2A , the first potential provided is greater than the second potential, and the intensity maximum value of the electric field, that is, the position of the first potential branch line 122, is generated at the edge of each lens segment 152, The minimum value of the electric field intensity, that is, the position of the second potential branch line 124 is generated at the center of each lens segment 152 , and the intensity of the electric field gradually decreases from the edge of each lens segment 152 to the center thereof. In the next time phase, as shown in Figure 2B, the first potential provided is smaller than the second potential, and the intensity maximum value of the electric field, that is, the position of the second potential branch line 124, is generated at the edge of each lens segment 152, and the intensity of the electric field The minimum value, ie the position of the first potential branch line 122 , is generated at the center of each lens segment 152 , and the intensity of the electric field gradually decreases from the edge of each lens segment 152 to its center. The focus position of the light can be changed through the conversion of the applied voltage, so as to provide two images with different focal points to be superimposed to form a stereoscopic image.

As mentioned above, the variation of the electric field can be made uniform by the dielectric layer 130 formed on the electrode array 120 . Certainly, the electrode array 120 can also have a plurality of third potential branch lines 126 according to user's design requirements, and the third potential branch lines 126 can be arranged between adjacent first potential branch lines 122 and second potential branch lines 124, and The third potential is between the first potential and the second potential, so that the change of the electric field is more uniform. By analogy, the electrode array 120 may further have a plurality of fourth potential branches, fifth potential branches, etc., which will not be repeated here.

Referring to FIG. 3 , it shows a schematic diagram of an embodiment of the electrode array in the liquid crystal display for displaying stereoscopic images of the present invention. The electrode array 200 includes a first potential main line 210 , a second potential main line 220 , a plurality of first potential branch lines 230 and a plurality of second potential branch lines 240 . The first potential main line 210 is located on one side of the first substrate 202 , and the second potential main line 220 surrounds the outer edge of the first substrate 202 . There are a plurality of first nodes 212 on the first potential main line 210 , and the first potential branch lines 230 are branched from the first nodes 212 , and the first potential branch lines 230 are perpendicular to the first potential main line 210 . There are a plurality of second nodes 222 on the second potential main line 220 , and the second potential branch lines 240 are branched from the second nodes 222 , and the second potential branch lines 240 are perpendicular to the second potential main line 220 . Wherein the first potential branch line 230 and the second potential branch line 240 are arranged alternately. When different voltages are applied to the first potential main line 210 and the second potential main line 220, the first potential branch line 230 has a first potential, and the second potential branch line 240 has a second potential, wherein the first potential and the second potential line The two potentials are different.

The first potential branch lines 230 are branched from the first node 212 in a fork-like arrangement, and point to opposite directions. The first potential main line 210 further includes an extension section 214 for connecting the first node 212 and the first potential main line 210 . The second potential main line 220 further includes an extension section 224 connecting the second node 222 and the second potential main line 220 .

The second potential branch lines 240 are in multiple groups, and each group of the second potential branch lines 240 includes a conducting wire 242 and a bending line 244 . The wire 242 is connected to the opposite second potential main line 220 , in other words, the second potential main line 220 on opposite sides of the first substrate 202 shares the wire 242 . The bending line 244 is wound between the first potential branch lines 230 , wherein the bending line 244 is wound around the first potential branch lines 230 in a bow shape. In this way, the first potential branch lines 230 and the second potential branch lines 240 are arranged alternately.

The electrode array 200 of this embodiment may further include a third potential main line 250 and a plurality of third potential branch lines 260 . The third potential main line 250 is disposed on the other side of the first substrate 202 relative to the first potential main line 210 . The third potential main line 250 has a plurality of third nodes 252 , and the third potential branch lines 260 branch from the third nodes 252 and are perpendicular to the third potential main line 250 . Wherein the first potential branch line 230 , the second potential branch line 240 and the third potential branch line 260 are arranged alternately in sequence. The third potential main line 250 further includes an extension section 254 connected to the third node 252 and the third potential main line 250 . The third potential branch lines 260 are arranged in groups of forks and point to the opposing first potential main lines 210 . The first potential branch lines 230 , the second potential branch lines 240 and the third potential branch lines 260 are alternately arranged. More specifically, the second potential branch line 240 is located between the first potential branch line 230 and the third potential branch line 260 . Alternatively, the arrangement sequence of the first potential branch line 230, the second potential branch line 240 and the third potential branch line 260 is the first potential branch line 230, the second potential branch line 240, the third potential branch line 260, the second potential branch line 230, and then return to The first potential branch line 230 circulates in this way.

When different voltages are respectively applied to the first potential main line 210, the second potential main line 220 and the third potential main line 250, the first potential branch line 230, the second potential branch line 240 and the third potential branch line 260 connected to them also carry the first potential branch line 260 respectively. A potential, a second potential and a third potential. The relationship among the first potential, the second potential and the third potential in a phase can be that the first potential is the highest, the second potential is next, and the third potential is the lowest. Or in another time phase, the first potential is the lowest, the third potential is the highest, and the second potential is in between.

Referring to FIG. 4 , it shows a schematic view of another embodiment of the electrode array of the liquid crystal display for displaying stereoscopic images of the present invention. The electrode array 300 includes a first potential main line 310 , a second potential main line 320 , a plurality of first potential branch lines 330 , and a plurality of second potential branch lines 340 . The first potential main line 310 is located on one side of the first substrate 302 . The first potential branch line 330 is branched from the first potential main line 310 , and the first potential branch line 330 is perpendicular to the first potential main line 310 . The second potential main line 320 is located on the same side as the first potential main line 310 on the first substrate 302 . The second potential branch line 340 is branched from the second potential main line 320 and is perpendicular to the second potential main line 320 . The first potential branch lines 330 and the second potential branch lines 340 are arranged alternately.

The electrode array 300 may further include a third potential main line 350 and a third potential branch line 360 . The third potential main line 350 is located on the same side as the first potential main line 310 on the first substrate 302 . The third potential branch line 360 branches from the third potential main line 350 and is perpendicular to the third potential main line 350 . Wherein the third potential branch line 360 is located between two adjacent second potential branch lines 340 . Alternatively, the arrangement order of the first potential branch line 330, the second potential branch line 340 and the third potential branch line 360 is the first potential branch line 330, the second potential branch line 340, the third potential branch line 360, the second potential branch line 330, and then return to The first potential branch line 330 circulates in this way.

When performing stereoscopic image display, different voltages can be applied to the first potential main line 310, the second potential main line 320, and the third potential main line 350 from the same side of the first substrate 302, and the first potential branch line 330 and the third potential main line 350 connected to them will be connected to each other. The second potential branch line 340 and the third potential branch line 360 also carry the first potential, the second potential and the third potential respectively. The relationship among the first potential, the second potential and the third potential in a phase can be that the first potential is the highest, the second potential is next, and the third potential is the lowest. Or in another time phase, the first potential is the lowest, the third potential is the highest, and the second potential is in between.

It can be known from the above preferred embodiments of the present invention that the application of the present invention has the following advantages. Through the dielectric layer on the electrode array, the change of the electric field can be made more uniform and the imaging quality can be improved. The wiring design of the electrode array can effectively save the space required for wiring and facilitate the supply of voltage.

Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any skilled person can make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined by the appended claims.

Claims (3)

1. show a liquid crystal display for stereopsis, it is characterized in that, comprise:

One first substrate;

One electrod-array, be formed on this first substrate, wherein this electrod-array comprises:

One first current potential main line, is positioned at the side of this first substrate;

Multiple first current potential branch line, branch is from this first current potential main line, and this first current potential branch line is perpendicular to this first current potential main line;

One second current potential main line, around the outer rim of this first substrate;

Multiple second current potential branch line, branch is from this second current potential main line, this the second current potential branch line is perpendicular to this second current potential main line, this the second current potential branch line is multiple one group, the the second current potential branch line wherein often organized comprises a wire and a folding line, this wire is communicated with this second current potential main line of subtend, and this folding line is set around between this first current potential branch line;

One the 3rd current potential main line, is arranged at the opposite side of this first substrate relative to this first current potential main line; And

Multiple 3rd current potential branch line, branch is from the 3rd current potential main line, and the 3rd current potential branch line is perpendicular to the 3rd current potential main line, and wherein this first current potential branch line, this second current potential branch line and the 3rd current potential branch line are sequentially staggered;

One dielectric layer, is formed on this electrod-array;

One first both alignment layers, arranges on this dielectric layer;

One second substrate;

One common electrode layer, is formed at this second substrate;

One second both alignment layers, is arranged in this common electrode layer; And

One liquid crystal layer, be folded between this first both alignment layers and this second both alignment layers, wherein when applying the first voltage respectively in this first current potential main line and this first current potential branch line, apply the second voltage in this second current potential main line and this second current potential branch line, and applying tertiary voltage when the 3rd current potential main line and the 3rd current potential branch line, the refracting power effects of the liquid crystal arrangement of this liquid crystal layer is equal to convex lens array.

2. the liquid crystal display of display stereopsis according to claim 1, is characterized in that, this second substrate of the complete covering of this common electrode layer is in the face of a surface of this liquid crystal layer.

3. the liquid crystal display of display stereopsis according to claim 1, it is characterized in that, putting in order as this first current potential branch line, this second current potential branch line, the 3rd current potential branch line, this second current potential branch line of this first current potential branch line, this second current potential branch line and the 3rd current potential branch line, circulates with this.