CN203275869U - Projector - Google Patents
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- CN203275869U CN203275869U CN2013200355989U CN201320035598U CN203275869U CN 203275869 U CN203275869 U CN 203275869U CN 2013200355989 U CN2013200355989 U CN 2013200355989U CN 201320035598 U CN201320035598 U CN 201320035598U CN 203275869 U CN203275869 U CN 203275869U
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Abstract
The utility model discloses a projector comprising an electric field controller, and a Polaroid, a driving liquid crystal cell and a compensation liquid crystal cell which are sequentially arranged in a direction of light transmission; the driving liquid crystal cell and the compensation liquid crystal cell comprise same liquid crystal layers; and the electric field controller is used for supplying a first voltage to the driving liquid crystal cell and supplying a second voltage to the compensation liquid crystal cell. Each of the work cycles of the electric field controller can be divided into three continuous time quantum, the first voltage and the second voltage are all high level in the first time quantum, the first voltage and the second voltage are all low level in the second time quantum, and the first voltage is high level and the second voltage is low level in the third time quantum. By adopting the above mode, the compensation liquid crystal cell is employed to compensate birefringence and time delayed effects of the liquid crystal layers in the driving liquid crystal cell, and a display effect of images is raised.
Description
Technical field
The utility model relates to the display technique field, relates in particular to a kind of projector.
Background technology
The twisted-nematic TN type liquid crystal layer that uses in display technique at present or super twisted nematic type STN type liquid crystal layer boost and have birefringence and time delay effect in process applying electric field, make the image of demonstration produce colour cast and ghost phenomena.Wherein, super twisted nematic type STN type liquid crystal layer birefringence effect is particularly serious, has the dispersion of light when showing, when added electric field not, super twisted nematic type STN type liquid crystal display is color slightly, such as with yellow or blue.Above-mentioned phenomenon can reduce the display effect of display device.
Therefore, be necessary to provide a kind of projector to solve the problems of the technologies described above.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of projector.
The first technical scheme that the utility model adopts is to provide a kind of projector, comprising:
Image signal processing equipment, liquid crystal cell structure and projection lens;
Described image signal processing equipment is used for synthetic image signal light;
Described liquid crystal cell structure is arranged on the bang path of picture signal light, is used for picture signal light is changed over two kinds of different polarized lights;
Described projection lens is used for described two kinds of different polarized light transmissions to the projection screen imaging;
Wherein, described liquid crystal cell structure comprises the first described liquid crystal cell structure of technical scheme any one of the present utility model.
Wherein, described image signal processing equipment comprises: digital light is processed the type image signal treatment facility, is used for synthetic image signal light; Or liquid crystal on silicon type image signal treatment facility, be used for synthetic image signal light; Or the liquid crystal type image signal processing equipment, be used for synthetic image signal light; Or display device, being used for synthetic image signal light, described display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
By the way, a kind of projector that the utility model provides compensates liquid crystal cell by employing and compensates birefringence and the time delay effect that drives liquid crystal layer in liquid crystal cell, can improve the display effect of image.
Description of drawings
Fig. 1 is the simplified structure schematic diagram of the first embodiment of liquid crystal cell structure of the present utility model;
Fig. 2 is the detailed construction schematic diagram of liquid crystal cell structure in Fig. 1;
Fig. 3 is the simplified structure schematic diagram of the second embodiment of liquid crystal cell structure of the present utility model;
Fig. 4 is the structural representation of the first embodiment of projector of the present utility model;
Fig. 5 is the structural representation of the second embodiment of projector of the present utility model;
Fig. 6 is the structural representation of the first embodiment of stereo projection system of the present utility model;
Fig. 7 is the structural representation of the second embodiment of stereo projection system of the present utility model;
Fig. 8 is the principle of work schematic diagram of liquid crystal cell structure shown in Figure 1.
Embodiment
See also Fig. 1, Fig. 1 is the simplified structure schematic diagram of the first embodiment of liquid crystal cell structure of the present utility model.As shown in Figure 1, the liquid crystal cell structure 10 of the present embodiment comprises control device of electric field (not shown) and the polaroid 11, driving liquid crystal cell 12 and the compensation liquid crystal cell 13 that are arranged in order setting along the light direction of transfer.Wherein, the incidence surface and the polaroid 11 that drive liquid crystal cell 12 are bonding, and the exiting surface of described driving liquid crystal cell 12 is bonding with compensation liquid crystal cell 13, and described driving liquid crystal cell 12 is drawn together identical liquid crystal layer with compensation liquid crystal cell bag 13.
In the present embodiment, described polaroid 11 is used for seeing through the light parallel with its light transmission shaft direction, obtains the First Line polarized light, and the First Line polarized light enters to inject to drive liquid crystal cell 12.Whether driving liquid crystal cell 12 changes the polarization direction of First Line polarized light need to be determined according to the duty of control device of electric field.
described control device of electric field is used for providing the first voltage to driving liquid crystal cell 12, provide second voltage to compensation liquid crystal cell 13, each work period T of described control device of electric field can be divided into three continuous time periods, described three continuous time periods are followed successively by very first time section 0-t1, the second time period t 1-t2 and the 3rd time period t 2-t3, in very first time section 0-t1, described the first voltage and second voltage are all high level, in the second time period t 1-t2, the first voltage and second voltage are all low level, in the 3rd time t2-t3 section, the first voltage is high level and second voltage is low level.in the present embodiment, drive when being in high level together with compensation liquid crystal cell 13 on liquid crystal cell 12, the First Line polarized light directly sees through and drives liquid crystal cell 12 more directly through compensation liquid crystal cell 13, the voltage that drives liquid crystal cell 12 and drive on liquid crystal cell 12 and compensation liquid crystal cell 13 is dropped in low level process by high level gradually, the sense of rotation of the polarization direction of driving liquid crystal cell 12 and 13 pairs of linearly polarized lights of compensation liquid crystal cell is opposite and the anglec of rotation is identical, drive the voltage on liquid crystal cell 12 and compensate liquid crystal cell 13 when being in low level together, from driving liquid crystal cell 12 outgoing polarization directions perpendicular to the second linearly polarized light of First Line polarized light, the second linearly polarized light becomes via compensation liquid crystal cell 13 the 3rd linearly polarized light that the polarization direction is parallel to the First Line polarized light, drive that liquid crystal cell 12 is in high level and when compensating liquid crystal cell 13 and being in low level, the First Line polarized light directly sees through and drives liquid crystal cell 12 more directly through compensation liquid crystal cell 13, then the First Line polarized light becomes the polarization direction perpendicular to the 4th linearly polarized light of First Line polarized light via compensation liquid crystal cell 13.
When drive that liquid crystal cell 12 and compensation liquid crystal cell adopt be TN type liquid crystal the time, see also Fig. 8, Fig. 8 is the principle of work schematic diagram of liquid crystal cell structure shown in Figure 1.as shown in Figure 8, Fig. 8 (A) is the time dependent schematic diagram of institute's making alive that drives liquid crystal cell 12, Fig. 8 (B) is the time dependent schematic diagram of institute's making alive of compensation liquid crystal cell 13, Fig. 8 (C) is that the voltage shown in Fig. 8 (A) is added on to drive when the compensation liquid crystal cell 13 shown in liquid crystal cell 12 and Fig. 8 (B) is added on the compensation liquid crystal cell and drives liquid crystal cell to the windup-degree schematic diagram of linearly polarized light, Fig. 8 (D) is that the voltage shown in Fig. 8 (A) is added on the windup-degree schematic diagram that compensates 13 pairs of linearly polarized lights of liquid crystal cell when the compensation liquid crystal cell 13 shown in driving liquid crystal cell 12 and Fig. 8 (B) is added on the compensation liquid crystal cell, Fig. 8 (E) is the schematic diagram with Fig. 8 (C) polarization direction anglec of rotation of the linearly polarized light of synchronous corresponding incident on the time.Wherein, perpendicular to the polarization direction of First Line polarized light, the four-headed arrow representative of vertical direction is parallel to the polarization direction of First Line polarized light to the representative of horizontal bidirectional arrow in Fig. 8 (E) from the polarization direction of the linearly polarized light of compensation liquid crystal cell 13 outgoing from the polarization direction of the linearly polarized light of compensation liquid crystal cell 13 outgoing.
Therefore, the liquid crystal cell structure 10 of the present embodiment alternately outgoing polarization direction is parallel to the linearly polarized light of First Line polarized light and polarization direction perpendicular to the polarized light of First Line polarized light, and adopts and drive the voltage delay effect that liquid crystal cell 12 and compensation liquid crystal cell 13 structures can effective compensation drive liquid crystal cell 12.
See also Fig. 2, Fig. 2 is the detailed construction schematic diagram of liquid crystal cell structure in Fig. 1.As shown in Figure 2, described driving liquid crystal cell 12 comprises the first conductive layer 121, the first liquid crystal layer 122, the second conductive layer 123 and the first glass plate 124 that is arranged in parallel successively along the direction of transfer of First Line polarized light, described the first conductive layer 121 and the second conductive layer 123 are transparency conducting layer, and described the first conductive layer 121 and the second conductive layer 123 and the first liquid crystal layer 123 are bonding, and described the second conductive layer 123 and the first glass plate 124 are bonding; Described compensation liquid crystal cell 13 comprises the second glass plate 131, the 3rd conductive layer 132, the second liquid crystal layer 133 and the 4th conductive layer 134 that is arranged in parallel successively along the beam projecting direction that drives liquid crystal cell 12, described the 3rd conductive layer 132 and the 4th conductive layer 134 are transparency conducting layer, and described the 3rd conductive layer 132 and the 4th conductive layer 134 and the second liquid crystal layer 133 are bonding, and described the 3rd conductive layer 132 and the second glass plate 131 are bonding.This kind situation, described the first Polarizer 11 and the first conductive layer 121 are bonding, the first glass plate 124 and the second glass plate 131 are bonding, and in other embodiment of liquid crystal cell structure 10, described the first glass plate 124 and the second glass plate 131 also can adopt the mode of fixed intervals to arrange certainly.
In other embodiment of liquid crystal cell structure 10 of the present utility model, described the first glass plate 124 and the second glass plate 131 also can be substituted by a glass plate, make the second conductive layer 123 and the 3rd conductive layer 132 be bonded on the same glass plate.
please further referring to Fig. 2, in another embodiment of liquid crystal cell structure 10 of the present utility model, described driving liquid crystal cell 12 further comprises the 3rd glass plate 125, described First Line polarized light incides on the first conductive layer 121 after seeing through the 3rd glass plate 125, the plane of incidence of the exit facet of the 3rd glass plate 125 and the first conductive layer 121 is bonding, described compensation liquid crystal cell 13 further comprises the 4th glass plate 135, from the light of described the 4th conductive layer 134 outgoing through the 4th glass plate 135 outgoing, the exit facet of the plane of incidence of described the 4th glass plate 135 and the 4th conductive layer 134 is bonding.
Please further referring to Fig. 2, the voltage swing that described driving liquid crystal cell 12 and described compensation liquid crystal cell 13 apply equates, polarity is opposite, particularly, and as shown in Figure 2, the first conductive layer 121 polarity are for just, the second conductive layer 123 polarity are for negative, and the electric potential difference between the first conductive layer 121 and the second conductive layer 123 is u, and the 3rd conductive layer 132 polarity are for negative, the 4th conductive layer 134 polarity are for just, and the electric potential difference between the 3rd conductive layer 132 and the 4th conductive layer 134 is-u.Certainly, the electric potential difference between the first conductive layer 121 and the second conductive layer 123 also can be-u, and the electric potential difference between the 3rd conductive layer 132 and the 4th conductive layer 134 is u, and this situation is also within protection domain of the present utility model.
In a preferred embodiment of liquid crystal cell structure of the present utility model, described the first conductive layer 121, the second conductive layer 123, the 3rd conductive layer 131 and the 4th conductive layer 134 comprise tin indium oxide ITO conductive layer, can certainly adopt other conductive materials with identical functions to substitute.
Described in a preferred embodiment of the present utility model, the first liquid crystal layer 122 and the second liquid crystal layer 133 comprise: twisted-nematic TN type liquid crystal layer, when described control device of electric field does not provide electric field to twisted-nematic TN type liquid crystal layer, incide linearly polarized light change of polarized direction 90 degree of described twisted-nematic TN type liquid crystal layer.The first liquid crystal layer 122 described in another preferred embodiment of the present utility model and the second liquid crystal layer 133 comprise: super twisted nematic STN type liquid crystal layer, when described control device of electric field does not provide electric field to super twisted nematic STN type liquid crystal layer, incide linearly polarized light change of polarized direction 270 degree of described super twisted nematic STN type liquid crystal layer.Described twisted-nematic TN type liquid crystal layer and super twisted nematic STN type liquid crystal layer exist birefringence and time delay effect in applying the process of electric field, can affect the display effect of display frame, therefore, adopt the scheme of the Double liquid crystal box of liquid crystal cell structure of the present utility model can compensate this birefringence and time delay effect, improve the display effect of display device.
See also Fig. 3, Fig. 3 is the simplified structure schematic diagram of the second embodiment of liquid crystal cell structure of the present utility model.As shown in Figure 3, the liquid crystal cell structure 20 of the present embodiment comprises control device of electric field and the polaroid 11, driving liquid crystal cell 12, compensation liquid crystal cell 13 and quarter-wave phaser or the four/three-wavelength phaser 14 that are arranged in order setting along the light direction of transfer.
liquid crystal cell structure 10 shown in Figure 3 is with the difference of liquid crystal cell structure 20 shown in Figure 1: the bright dipping side of the compensation liquid crystal cell 13 of liquid crystal cell structure 20 further comprises a quarter-wave phaser or four/three-wavelength phaser 14, described phaser 14 comprises quarter-wave lengthy motion picture or four/three-wavelength sheet, the light transmission shaft angular separation of the slow axes direction of described phaser 14 and described polaroid 11 is 45 degree or-45 degree, change into left circularly polarized light or right-circularly polarized light for the linearly polarized light that will compensate liquid crystal cell 13 outgoing, therefore in Fig. 2, the emergent ray of liquid crystal cell structure 20 is left circularly polarized light or right-circularly polarized light.
In the second embodiment of liquid crystal cell structure of the present utility model, the control device of electric field that alternately is in the first duty and the second duty makes liquid crystal cell structure 20 alternately produce left circularly polarized light and right-circularly polarized light.
See also Fig. 4, Fig. 4 is the structural representation of the first embodiment of projector of the present utility model.As shown in Figure 4, the projector 30 of the present embodiment comprises: image signal processing equipment (not sign), liquid crystal cell structure and projection lens (not indicating).Wherein, described image signal processing equipment is used for synthetic image signal light.Described liquid crystal cell structure adopts is the structure of liquid crystal cell structure 10 shown in Figure 1, described liquid crystal cell structure is arranged on the bang path of picture signal light, be used for picture signal light is changed over two kinds of different polarized lights, be specially the polarization direction and be parallel to the axial linearly polarized light of printing opacity of polaroid 11 and polarization direction perpendicular to the axial linearly polarized light of the printing opacity of polaroid 11.The axial linearly polarized light of printing opacity and polarization direction that described polarization direction is parallel to polaroid 11 are alternately incided projection lens and are transmitted through screen imaging through projection lens perpendicular to the axial linearly polarized light of the printing opacity of polaroid 11.
In the concrete application of the present embodiment, the user can coordinate the projector 30 of the present embodiment to watch 3D projected image effect by wearing the line polaroid glasses.
See also Fig. 5, Fig. 5 is the structural representation of the second embodiment of projector of the present utility model.Shown in Figure 5, the projector 40 of the present embodiment comprises: image signal processing equipment (not sign), liquid crystal cell structure and projection lens (not indicating).Wherein, described image signal processing equipment is used for synthetic image signal light.Described liquid crystal cell structure adopts is the structure of liquid crystal cell structure 20 shown in Figure 3, described liquid crystal cell structure is arranged on the bang path of picture signal light, be used for picture signal light is changed over two kinds of different polarized lights, specifically comprise left circularly polarized light and right-circularly polarized light.The left circularly polarized light that alternately produces in the engineering of described liquid crystal cell structure 20 work and right-circularly polarized light alternately incide to projection lens and through projection lens projects to the projection screen imaging.
In the concrete application of the present embodiment, the user can coordinate the projector 40 of the present embodiment to watch 3D projected image effect by wearing the rotatory polarization glasses.
Wherein, in the concrete application of projector of the present utility model, the image signal processing equipment that projector 30 shown in Figure 4 and projector 40 shown in Figure 5 comprise comprises: digital light is processed the type image signal treatment facility, is used for synthetic image signal light; Or liquid crystal on silicon type image signal treatment facility, be used for synthetic image signal light; Or the liquid crystal type image signal processing equipment, be used for synthetic image signal light; Or display device, being used for synthetic image signal light, described display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
See also Fig. 6, Fig. 6 is the structural representation of the first embodiment of stereo projection system of the present utility model.As shown in Figure 6, the stereo projection system 50 of the present embodiment comprises: projector, liquid crystal cell structure and line polaroid glasses (not shown).Wherein, projector is used for projects images signal light to the projection screen imaging; Liquid crystal cell structure is arranged between projector and projection screen on light path, is used for described picture signal light is become two kinds of different linearly polarized lights; On the line polaroid glasses are arranged at that described projection screen reflexes to light transmition path, described line polaroid glasses comprise left eyeglass, right eyeglass and frame, described left eyeglass and right eyeglass are arranged on described frame, the light transmission shaft direction of described left eyeglass is parallel from the polarization direction of one of described two kinds of different linear polarization light, and the polarization direction of the another kind of linearly polarized light in the light transmission shaft direction of described right eyeglass and described two kinds of different linear polarization light is parallel.
In the present embodiment, described liquid crystal cell structure adopts is the technical scheme of the liquid crystal cell structure 10 of the first embodiment of the present utility model shown in Figure 1, the structure of described liquid crystal cell structure 10 and principle of work have provided detailed description in the first embodiment of the present utility model, do not repeat them here.
See also Fig. 7, Fig. 7 is the structural representation of the second embodiment of stereo projection system of the present utility model.As shown in Figure 7, the stereo projection system 60 of the present embodiment comprises: projector, liquid crystal cell structure and rotatory polarization glasses (not shown).Wherein, projector is used for projects images signal light to the projection screen imaging; Liquid crystal cell structure is arranged between projector and projection screen on light path, is used for described picture signal light is become left circularly polarized light and right-circularly polarized light; On the rotatory polarization glasses are arranged at that described projection screen reflexes to light transmition path, described rotatory polarization glasses comprise left eyeglass, right eyeglass and frame, described left eyeglass and right eyeglass are arranged on described frame, and described left eyeglass comprises: left eyeglass quarter-wave plate and left eyeglass polaroid; Described left eyeglass quarter-wave plate changes the left eye linearly polarized light for one of the left circularly polarized light that will obtain and right-circularly polarized light after described projection screen reflection; Described left eyeglass polaroid is used for seeing through described left eye linearly polarized light; Described right eyeglass comprises right eyeglass quarter-wave plate and right eyeglass polaroid; Described right eyeglass quarter-wave plate changes the right eye linearly polarized light for the left circularly polarized light that will obtain and the another kind of circularly polarized light of right-circularly polarized light after described projection screen reflection; Described right eyeglass polaroid is used for seeing through described right eye linearly polarized light; The polar orientation irrelevancy of the polar orientation of described left eyeglass polaroid and right eyeglass polaroid is capable.
In the present embodiment, described liquid crystal cell structure adopts is the technical scheme of the liquid crystal cell structure 20 of the second embodiment of the present utility model shown in Figure 3, the structure of described liquid crystal cell structure 20 and principle of work have provided detailed description in the first embodiment of the present utility model, do not repeat them here.
In using particularly, the user is by stereo projection system of the present utility model 50 shown in Figure 6 and stereo projection system 60 shown in Figure 7, the purpose that can realize watching the 3D projected image.
By the way, the liquid crystal cell structure that the utility model provides and comprise projector and the stereo projection system of described liquid crystal cell structure, compensate liquid crystal cell by employing and compensate birefringence and the time delay effect that drives liquid crystal layer in liquid crystal cell, can improve the display effect of image.
For the utility model liquid crystal cell structure, the projector that comprises described liquid crystal cell structure and stereo projection system, the form of realization is diversified.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a projector, is characterized in that, described projector comprises: image signal processing equipment, liquid crystal cell structure and projection lens;
Described image signal processing equipment is used for synthetic image signal light;
Described liquid crystal cell structure is arranged on the bang path of picture signal light, is used for picture signal light is changed over two kinds of different polarized lights;
Described projection lens is used for described two kinds of different polarized light transmissions to the projection screen imaging;
Wherein, described liquid crystal cell structure comprises control device of electric field and the polaroid, driving liquid crystal cell and the compensation liquid crystal cell that are arranged in order setting along the light direction of transfer;
Described polaroid is used for seeing through the light parallel with its light transmission shaft direction, obtains the First Line polarized light;
Incidence surface and the polaroid of described driving liquid crystal cell are bonding, and the exiting surface of described driving liquid crystal cell is bonding with the compensation liquid crystal cell, and described driving liquid crystal cell comprises identical liquid crystal layer with the compensation liquid crystal cell;
Described control device of electric field is used for the first voltage being provided, providing second voltage to the compensation liquid crystal cell to driving liquid crystal cell, each work period of described control device of electric field can be divided into three continuous time periods, described three continuous time periods are followed successively by very first time section, the second time period and the 3rd time period, in very first time section, described the first voltage and second voltage are all high level, within the second time period, the first voltage and second voltage are all low level, within the 3rd time period, the first voltage is high level and second voltage is low level;
wherein, drive when being in high level together with the compensation liquid crystal cell on liquid crystal cell, the First Line polarized light directly sees through and drives liquid crystal cell more directly through the compensation liquid crystal cell, the voltage that drives liquid crystal cell and drive on liquid crystal cell and compensation liquid crystal cell is dropped in low level process by high level gradually, drive liquid crystal cell and compensate liquid crystal cell opposite and the anglec of rotation is identical to the sense of rotation of the polarization direction of linearly polarized light, drive the voltage on liquid crystal cell and compensate liquid crystal cell when being in low level together, from driving liquid crystal cell outgoing polarization direction perpendicular to the second linearly polarized light of First Line polarized light, the second linearly polarized light becomes via the compensation liquid crystal cell the 3rd linearly polarized light that the polarization direction is parallel to the First Line polarized light, drive that liquid crystal cell is in high level and when compensating liquid crystal cell and being in low level, the First Line polarized light directly sees through and drives liquid crystal cell more directly through the compensation liquid crystal cell, then the First Line polarized light becomes the polarization direction perpendicular to the 4th linearly polarized light of First Line polarized light via the compensation liquid crystal cell.
2. projector according to claim 1, is characterized in that, described image signal processing equipment comprises: digital light is processed the type image signal treatment facility, is used for synthetic image signal light; Or liquid crystal on silicon type image signal treatment facility, be used for synthetic image signal light; Or the liquid crystal type image signal processing equipment, be used for synthetic image signal light; Or display device, being used for synthetic image signal light, described display device comprises TV, computer, projector, navigating instrument, mobile phone, camera.
3. projector according to claim 1, it is characterized in that, described driving liquid crystal cell comprises the first conductive layer, the first liquid crystal layer, the second conductive layer and the first glass plate that is arranged in parallel successively along the direction of transfer of First Line polarized light, described the first conductive layer and the second conductive layer are transparency conducting layer, and described the first conductive layer and the second conductive layer and the first liquid crystal layer are bonding, and described the second conductive layer and the first glass plate are bonding; Described compensation liquid crystal cell comprises the second glass plate, the 3rd conductive layer, the second liquid crystal layer and the 4th conductive layer that is arranged in parallel successively along the beam projecting direction that drives liquid crystal cell, described the 3rd conductive layer and the 4th conductive layer are transparency conducting layer, and described the 3rd conductive layer and the 4th conductive layer and the second liquid crystal layer are bonding, and described the 3rd conductive layer and the second glass plate are bonding.
4. projector according to claim 3, it is characterized in that, described driving liquid crystal cell further comprises the 3rd glass plate, described First Line polarized light incides on the first conductive layer after seeing through the 3rd glass plate, the plane of incidence of the exit facet of the 3rd glass plate and the first conductive layer is bonding, described compensation liquid crystal cell further comprises the 4th glass plate, and through the 4th glass plate outgoing, the exit facet of the plane of incidence of described the 4th glass plate and the 4th conductive layer is bonding from the light of described the 4th conductive layer outgoing.
5. projector according to claim 3, is characterized in that, described the first conductive layer, the second conductive layer, the 3rd conductive layer and the 4th conductive layer comprise tin indium oxide ITO conductive layer.
6. projector according to claim 3, it is characterized in that, described the first liquid crystal layer and the second liquid crystal layer comprise: super twisted nematic STN type liquid crystal layer, when described control device of electric field does not provide electric field to super twisted nematic STN type liquid crystal layer, incide linearly polarized light change of polarized direction 270 degree of described super twisted nematic STN type liquid crystal layer.
7. projector according to claim 3, it is characterized in that, described the first liquid crystal layer and the second liquid crystal layer comprise: twisted-nematic TN type liquid crystal layer, when described control device of electric field does not provide electric field to twisted-nematic TN type liquid crystal layer, incide linearly polarized light change of polarized direction 90 degree of described twisted-nematic TN type liquid crystal layer.
8. according to claim 1-7 any one described projectors, it is characterized in that, the exiting surface of described compensation liquid crystal cell is provided with phaser, described phaser comprises quarter-wave lengthy motion picture or four/three-wavelength sheet, the light transmission shaft angular separation of the slow axes direction of described phaser and described polaroid is 45 degree or-45 degree, and the linearly polarized light that is used for compensating the liquid crystal cell outgoing changes into left circularly polarized light or right-circularly polarized light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200355989U CN203275869U (en) | 2013-01-23 | 2013-01-23 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200355989U CN203275869U (en) | 2013-01-23 | 2013-01-23 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275869U true CN203275869U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200355989U Expired - Fee Related CN203275869U (en) | 2013-01-23 | 2013-01-23 | Projector |
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| Country | Link |
|---|---|
| CN (1) | CN203275869U (en) |
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2013
- 2013-01-23 CN CN2013200355989U patent/CN203275869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN YISIDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: SHENZHEN ESTA DISPLAY TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee after: SHENZHEN ESTAR DISPLAYTECH CO., LTD. Address before: 518000, District, Shenzhen, Nanshan District high tech Zone, Southern District, B1 digital technology park, building 2, C Patentee before: Shenzhen Esta Display Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160123 |
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| EXPY | Termination of patent right or utility model |