CN201765385U

CN201765385U - Stereoscopic display device

Info

Publication number: CN201765385U
Application number: CN2010201866117U
Authority: CN
Inventors: 刘再权; 刘晓林; 谢佳; 牛磊; 陈瑞改; 孙晓平
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2010-05-06
Filing date: 2010-05-06
Publication date: 2011-03-16
Anticipated expiration: 2020-05-06

Abstract

The utility model provides a stereoscopic display device which is matched with a pair of polaroid glasses to obtain the stereoscopic display effect. The stereoscopic display device comprises a liquid crystal display and a phase filter, wherein the phase filter is positioned between the liquid crystal display and the polaroid glasses. The phase filter comprises a raster type phase difference liquid crystal film and a lambada/4 wave plate, wherein the raster type phase difference liquid crystal film is arranged on the surface of the liquid crystal display, and the lambada/4 wave plate is positioned between the raster type phase difference liquid crystal film and the polaroid glasses. The stereoscopic display device has the advantages of low cost.

Description

3 d display device

Technical field

The utility model relates to a kind of 3 d display device, relates in particular to a kind of 3 d display device of phase filtrator that comprises.

Background technology

Now 3 d display device more and more appears in the application of numerous occasions, and the ultimate principle of its stereo display is that the right and left eyes to the people provides two discrepant pictures respectively, by brain this two width of cloth picture is synthesized the image with 3D effect.Can provide the mode of this two width of cloth picture to have much respectively, wherein utilize polaroid glasses to come the information of analyzing, thereby isolate the image of right and left eyes, offer right and left eyes respectively by a kind of phase filtrator output.

At present the position phase filtrator in the 3 d display device generally is the blooming of little polarizing layer (micro-polarizer) array of coming out of employing laser ablation, and it adopts the difference of thickness to realize the difference of a phase.But required thickness control is more accurate during fabrication for this blooming, and uniformity requirement is very high, so its cost is higher, correspondence has increased the cost of the 3 d display device of using this phase filtrator.

The utility model content

At the used position of prior art 3 d display device phase filtrator cost problem of higher, the utility model provides a kind of used position phase filtrator lower-cost 3 d display device.

A kind of 3 d display device, itself and polaroid glasses collocation are used to obtain the stereo display effect.This 3 d display device comprises LCD and position filtrator mutually, and this phase filter bits is between this LCD and this polaroid glasses.This phase filtrator comprises grating phase difference liquid crystal film and λ/4 wave plates, and this grating phase difference liquid crystal film is arranged on this liquid crystal display surface, and this λ/4 wave plates are between this grating phase difference liquid crystal film and this polaroid glasses.

Preferably, this grating phase difference liquid crystal film comprises oriented film, liquid crystal and frame, and this oriented film is oppositely arranged, and this frame and surrounds an enclosure space with this oriented film between this oriented film, and this sealing liquid crystal is contained in this enclosure space.

Preferably, the material of this oriented film is a polyimide.

Preferably, this grating phase difference liquid crystal film is the liquid crystal film that directed half-twist is solidified in interlacing.

Preferably, the sub pixel width of the width of this grating phase difference liquid crystal film interlacing and this LCD overlaps.

Preferably, these polaroid glasses comprise left sheet and right circular polarizing disk, the linearly polarized photon of 0 λ, λ/2 phasic differences of penetrating from this grating phase difference liquid crystal film is converted to left light and right-hand circularly polarized light by this λ/4 wave plates, and corresponding left sheet and the right circular polarizing disk that is sent to these polaroid glasses.

In the position phase filtrator that the utility model 3 d display device is adopted, this grating phase difference liquid crystal film homogeneity is better, and evenly not high to its thickness, so its cost is lower, thus the corresponding cost that has reduced this 3 d display device.

Description of drawings

The STRUCTURE DECOMPOSITION synoptic diagram of Fig. 1 the utility model 3 d display device one better embodiment.

Fig. 2 is a position shown in Figure 1 phase structure of filter decomposing schematic representation.

Fig. 3 is the synoptic diagram that forms transparency conducting layer in the manufacturing process of grating phase difference liquid crystal film shown in Figure 2.

Fig. 4 is the synoptic diagram that forms hot melt adhesive layer after Fig. 3 step.

Fig. 5 is the synoptic diagram that forms oriented film after Fig. 4 step.

Fig. 6 is the synoptic diagram of friction oriented film after Fig. 5 step.

Fig. 7 goes up the synoptic diagram that lower glass substrate is fitted into liquid crystal cell after Fig. 6 step.

Fig. 8 is the synoptic diagram of perfusion liquid crystal after Fig. 7 step.

Fig. 9 is the synoptic diagram that solidifies liquid crystal after Fig. 8 step.

Figure 10 is the synoptic diagram of hot melt adhesive demoulding after Fig. 9 step.

Figure 11 is the synoptic diagram of finished film edge cuts finishing after Figure 10 step.

Embodiment

Below in conjunction with accompanying drawing the utility model 3 d display device is described.

See also Fig. 1 and Fig. 2, wherein, Fig. 1 is the STRUCTURE DECOMPOSITION synoptic diagram of the utility model 3 d display device, and Fig. 2 is a position shown in Figure 1 phase structure of filter decomposing schematic representation.This 3 d display device 1 comprises LCD (liquid crystal display, LCD) 2 with position filtrator 3 mutually, in use, need to come the information of analyzing by these phase filtrator 3 outputs by polaroid glasses 4, thereby isolate the image of right and left eyes, offer right and left eyes respectively, reach the effect of watching stereo display.

This phase filtrator 3 comprises grating phase difference liquid crystal film 32 and λ/4 wave plates 34, and this grating phase difference liquid crystal film 32 is arranged on this LCD 2 surfaces, and this λ/4 wave plates 34 are between this grating phase difference liquid crystal film 32 and this polaroid glasses 4.The main effect of this grating phase difference liquid crystal film 32 is λ/2 phasic differences that respectively linearly polarized light of incident realized odd-numbered line and even number line in odd-numbered line and even number line, it solidifies the liquid crystal film of directed half-twist for interlacing, it is close to the surface of this LCD 2, and through accurate contraposition, the width of the sub-pixel of the width of its interlacing and this LCD 2 is overlapped fully.

By these LCD 2 outgoing are linearly polarized lights of equidirectional, liquid crystal through the directed half-twist of the curing in this grating phase difference liquid crystal film 32 is capable, it produces the phasic difference of λ/2, and linearly polarized light is just turned round and turn 90 degrees by TN (twisted nematie, twisted nematic panel) liquid crystal cell.And through the liquid crystal without spin in this grating phase difference liquid crystal film 32 when capable, linearly polarized light does not produce phase differential, linearly polarized light does not twist but directly penetrates, and does not change direction, so forms the linearly polarized light of the mutually perpendicular both direction of odd/even row.

This λ/4 wave plates 34 are arranged between this grating phase difference liquid crystal film 32 and this polaroid glasses 4, it mainly acts on is that the linearly polarized light of 0 λ, λ/2 phasic differences that will penetrate from this grating phase difference liquid crystal film 32 converts left light and right-hand circularly polarized light to, left sheet and right circular polarizing disk by these polaroid glasses 4, can realize the separation of images of right and left eyes, reach the stereos copic viewing effect.

The position phase filtrator 3 of the utility model 3 d display device 1 does not utilize difference in thickness to realize phasic difference, but cooperate λ/4 wave plates 34 to obtain phasic difference by this grating phase difference liquid crystal film 32 that directed half-twist is solidified in the interlacing corresponding with these LCD 2 sub-pixels, its homogeneity is better, and it is not evenly high to its thickness, therefore its cost is lower, thereby uses also corresponding reduction of cost of this 3 d display device 1 of this phase filtrator 3.

See also Fig. 3 to Figure 11, this grating phase difference liquid crystal film 32 can by simple and easy, manufacture craft makes cheaply, the glue that wherein is used for demoulding can be hot melt adhesive or light-sensitive emulsion, is the manufacturing process that example illustrates this grating phase difference liquid crystal film 32 with the hot melt adhesive in the present embodiment:

(1), forms transparency conducting layer 322 as Fig. 3.At first be provided for into two glass substrates 320 up and down of box, at the transparency conducting layer 322 of this glass substrate 320 photomask surfaces formation space, wherein the material of this transparency conducting layer 322 is tin indium oxide (ITO) or oxidation steel zinc (IZO);

(2) as Fig. 4, printing heat melten gel 324.Printing heat melten gel 324 on transparency conducting layer 322, the preferential roll printing coated technique that adopts, select for use temperature less than 185 degrees centigrade hot melt adhesive 324, perhaps select for use greater than the liquid crystal cleaning point but less than the hot melt adhesive 324 of liquid crystal decomposition temperature, its applied thickness is less than 0.2mm, under keeping warm mode, hot melt adhesive 324 is applied evenly, then with hot melt adhesive 324 coolings;

(3) as Fig. 5, printing oriented film 326.Printing oriented film 326 is cured printed oriented film 326 then on 324 layers of hot melt adhesives, the material of this oriented film 326 be polyimide (polyimide, PI);

(4) as Fig. 6, friction oriented film 326.Selecting the orthogonal directions of two glass substrates 320 is frictional direction, and the direction that preferable frictional direction is chosen as two glass substrates 320 is set to-45 degree and+45 degree respectively;

(5), fit into box as Fig. 7.The last lower glass substrate 320 that will be formed with oriented film 326 is fitted and is formed the TN boxes, and 320 of last lower glass substrate frame 327 is set, and wherein, fits into that the box operation comprises that conduction is expected silk-screen, frame silk-screen, dusted, contraposition applying and low temperature and pressure;

(6) as Fig. 8, perfusion liquid crystal 328.Earlier this TN box is normally cut, pour into liquid crystal 328 then, wherein when high-temperature perfusion liquid crystal 328, its temperature is selected to be lower than the temperature of fusion of hot melt adhesive 324, and is lower than liquid crystal 328 clearing point temperatures but is higher than the nematic phase temperature of liquid crystal 328;

(7), solidify liquid crystal 328 as Fig. 9.This liquid crystal is carried out ultra-violet curing for 328 layers, and the temperature when wherein solidification temperature is with perfusion liquid crystal 328 is identical, the interlacing making alive, and voltage is selected the high voltage of appropriate frequency;

(8) as Figure 10, hot melt adhesive 324 demouldings.At high temperature hot melt adhesive 324 is melted demoulding, temperature is controlled between liquid crystal 328 cleaning points and liquid crystal 328 decomposition temperatures, because liquid crystal 328 ultra-violet curing operation, so liquid crystal 328 can not be affected;

(9) as Figure 11, the finishing of finished film edge cuts.Employing cut finishing is cut finishing with the edge of finished film, forms final grating phase difference liquid crystal film 32.

Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. 3 d display device, its the place ahead is provided with polaroid glasses, this 3 d display device comprises LCD and position filtrator mutually, this phase filter bits is between this LCD and this polaroid glasses, it is characterized in that: this phase filtrator comprises grating phase difference liquid crystal film and λ/4 wave plates, this grating phase difference liquid crystal film is arranged on this liquid crystal display surface, and this λ/4 wave plates are between this grating phase difference liquid crystal film and this polaroid glasses.

2. 3 d display device according to claim 1, it is characterized in that: this grating phase difference liquid crystal film comprises oriented film, liquid crystal and frame, this oriented film is oppositely arranged, this frame is between this oriented film, and surrounding an enclosure space with this oriented film, this sealing liquid crystal is contained in this enclosure space.

3. 3 d display device according to claim 2 is characterized in that: the material of this oriented film is a polyimide.

4. 3 d display device according to claim 2 is characterized in that: this grating phase difference liquid crystal film is the liquid crystal film that directed half-twist is solidified in interlacing.

5. 3 d display device according to claim 4 is characterized in that: the width of this grating phase difference liquid crystal film interlacing and the sub pixel width of this LCD overlap.

6. 3 d display device according to claim 5, it is characterized in that: these polaroid glasses comprise left sheet and right circular polarizing disk, the linearly polarized photon of 0 λ, λ/2 phasic differences of penetrating from this grating phase difference liquid crystal film is converted to left light and right-hand circularly polarized light by this λ/4 wave plates, and corresponding left sheet and the right circular polarizing disk that is sent to these polaroid glasses.