CN107942528B - Naked eye 3D display device and manufacturing method thereof - Google Patents
Naked eye 3D display device and manufacturing method thereof Download PDFInfo
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- CN107942528B CN107942528B CN201810003163.3A CN201810003163A CN107942528B CN 107942528 B CN107942528 B CN 107942528B CN 201810003163 A CN201810003163 A CN 201810003163A CN 107942528 B CN107942528 B CN 107942528B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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Abstract
The application discloses naked eye 3D display equipment and a manufacturing method thereof, and relates to a display technology. By arranging the heightening layer, the distance between the CF ITO layer and the first ITO is reduced, and then the distance between the CF ITO layer and the first ITO and the distance difference between the CF ITO layer and the second ITO are reduced, so that the difference of LC deflection is reduced, the difference of brightness caused by different liquid crystal deflection is reduced, and bright lines existing in a black state are reduced.
Description
Technical Field
The present disclosure relates generally to display technologies, and more particularly, to 3D display technologies, and more particularly, to a naked-eye 3D display device and a method for fabricating the same.
Background
The appearance of naked eye 3D mobile phones greatly attracts the eyeballs of consumers, and the basic principle is that a grating is added on the basis of a common 2D display screen, so that R (for the right eye) and L (for the left eye) images are interactively displayed on a liquid crystal panel. If a slit (e.g., a vertical stripe-shaped light shielding plate) is disposed on the liquid crystal panel to serve as a light shielding plate, the right eye image of the interactive display will only reach the right eye, and the left eye image will only reach the left eye, as shown in fig. 1, and the display device includes: a left eye view 101, a right eye view 102, a raster open area 103, and a raster closed area 104, and also a left eye 105 and a right eye 106 are shown in fig. 1. As for the viewer located right in front of the screen, binocular parallax is generated, and as a result, stereoscopic vision can be obtained.
There is a novel switchable grating in the existing market, i.e. a controllable liquid crystal grating box is pasted on/under the original display screen, thereby realizing the switching of the on-off state of the grating when supplying voltage.
As shown in fig. 2, the basic principle of the liquid crystal grating is that the liquid crystal display device includes: the liquid crystal grating is in a TN mode, when the liquid crystal grating is normally used, the ITO is not powered, the liquid crystal grating is in a normally white mode, a normal 2D effect is visually seen, when 3D display is needed, the corresponding ITO is turned on, and the liquid crystal grating is changed into a grid mode with alternate black and white, so that a naked eye 3D effect is achieved.
Such a grating power supply manner is shown in fig. 3, fig. 3 shows a plurality of second ITO203 and first ITO204, a white area represents the second ITO203, a diagonal area represents the first ITO204, the number of black ITO (assumed as x) is related to the optimal viewing distance of human eyes and the width of ITO, when 3D is turned on, the adjacent x ITO (including the first ITO and the second ITO) in the black state all give a rated voltage, and the adjacent x ITO in the white state do not give a voltage, so that grating stripes with alternate black and white appear to produce a 3D effect.
However, the inventors of the present invention have found that the liquid crystal grating of such a structure has a problem of more or less bright lines because, although the first ITO and the second ITO are given the same voltage, the TN type electric field is a longitudinal electric field whose rated voltage is related to the distance between the ITO of the TFT and the CF, and thus, in the structure shown in fig. 2, when the first ITO and the second ITO are given the same voltage, due to the presence of the PVX layer, D ≠ D thereof makes VOP thereof different, resulting in a difference in corresponding LC deflection thereof, and a difference in liquid crystal deflection results in a difference in brightness thereof, resulting in the presence of bright lines in the black state.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a naked-eye 3D display device and a method for manufacturing the same to obtain better 3D display effect.
In a first aspect, an embodiment of the present invention provides a naked eye 3D display device, including:
and the heightening layer is arranged between the color film indium tin oxide CF ITO layer and the glass substrate, the position of the heightening layer corresponds to the first ITO, the material of the heightening layer is a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of the PVX layer corresponding to the first ITO and the thickness of the second ITO.
Further, the material of the enhancement layer is an insulating material.
Still further, the material used for the enhancement layer is an organic resin OC material.
Preferably, the enhancement layer is disposed below the CF ITO layer.
Further, the material of the enhancement layer is ITO
Preferably, the thickness of the enhancement layer is specifically:
the PVX layer corresponds to the sum of the thickness of the first ITO and the thickness of the second ITO.
In a second aspect, an embodiment of the present invention further provides a method for manufacturing a naked eye 3D display device, where the method includes:
manufacturing a heightening layer at a position corresponding to the first ITO, wherein the material of the heightening layer is a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of the PVX layer corresponding to the first ITO and the thickness of the second ITO;
and manufacturing a color film indium tin oxide CF ITO layer.
Further, the material used for the enhancement layer is an organic resin OC material.
Preferably, the thickness of the enhancement layer is specifically:
the PVX layer corresponds to the sum of the thickness of the first ITO and the thickness of the second ITO.
In a third aspect, an embodiment of the present invention further provides a method for manufacturing a naked eye 3D display device, including:
manufacturing a color film indium tin oxide CF ITO layer;
and etching away part of the thickness of the CF ITO at the position corresponding to the second ITO.
The embodiment of the invention provides naked eye 3D display equipment and a manufacturing method thereof, wherein a heightening layer is arranged between a CF ITO layer and a glass substrate, the position of the heightening layer corresponds to that of a first ITO, the material of the heightening layer is a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of a PVX layer corresponding to the first ITO and the thickness of a second ITO. By arranging the heightening layer, the distance between the CF ITO layer and the first ITO is reduced, and then the distance between the CF ITO layer and the first ITO and the distance difference between the CF ITO layer and the second ITO are reduced, so that the difference of LC deflection is reduced, the difference of brightness caused by different liquid crystal deflection is reduced, and bright lines existing in a black state are reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a naked eye 3D display principle in the prior art;
FIG. 2 is a schematic structural diagram of a naked eye 3D display device in the prior art;
FIG. 3 is a schematic diagram of a grating power supply mode of a naked eye 3D display device in the prior art;
fig. 4 is a schematic structural diagram of a naked eye 3D display device according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for manufacturing a naked eye 3D display device according to an embodiment of the present invention;
fig. 6 is a second flowchart of a method for manufacturing a naked-eye 3D display device according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 4, the naked eye 3D display device provided in the embodiment of the present invention includes: the liquid crystal grating comprises a first glass substrate and a PVX layer, a first ITO is arranged between the first glass substrate and the PVX layer, a second ITO is arranged on one side of the PVX layer far away from the first glass substrate, the first ITO and the second ITO are arranged at intervals,
the liquid crystal grating further comprises a heightening layer 206, which is arranged between the CF ITO (color film indium tin oxide) layer 202 and the second glass substrate, the position of the heightening layer 206 corresponds to the first ITO204, the material of the heightening layer 206 is transparent, and the thickness of the heightening layer 206 is less than twice of the sum of the thickness of the PVX (silicon nitride passivation) layer 205 corresponding to the first ITO204 and the thickness of the second ITO 203;
the liquid crystal grating comprises a plurality of black state parts and a plurality of white state parts, the black state parts and the white state parts are arranged at intervals, each black state part and each white state part respectively comprise X pieces of first ITO and second ITO, rated voltage is applied to the ITO of the black state parts, and the ITO of the white state parts does not give voltage, so that the effect of 3D display is realized.
Due to the fact that the heightening layer 206 is additionally arranged between the CF ITO layer 202 and the glass substrate 201 and corresponds to the position of the first ITO204, the distance between the CF ITO layer 202 and the first ITO204 is reduced, further, the difference between the distance between the CF ITO layer 202 and the first ITO204 and the distance between the CF ITO layer 202 and the second ITO203 is reduced, the difference of LC deflection is reduced, the difference of brightness caused by different liquid crystal deflection is reduced, and bright lines existing in a black state are reduced.
Preferably, the thickness of the enhancement layer 206 is specifically the sum of the thickness of the PVX layer 206 corresponding to the first ITO204 and the thickness of the second ITO203, and at this time, D = D avoids the difference in brightness caused by the difference in liquid crystal deflection, and further avoids bright lines existing in a black state.
In the embodiment of the present invention, the heightening layer 206 is preferably made of an insulating material, so that the influence of a non-insulating material on the device performance can be avoided.
In general, the material of the OC (organic resin) layer is a desirable material for forming the height increasing layer. That is, the material used for the raised layer may be OC. At this time, it can also be understood that, between the CF ITO layer 202 and the glass substrate 201, an OC layer for increasing is added, and the OC layer is provided at a position corresponding to the first ITO 204.
To reduce the possible impact of the raised layer 206 on the device, the raised layer 206 may be disposed under the CF ITO layer 202, so as to not only raise the corresponding position of the CF ITO layer 202, but also avoid changing the position of other layers between the CF ITO layer 202 and the glass substrate 201.
In order to reduce the manufacturing process steps and the process difficulty, the heightening layer 206 can also be made of an ITO material directly, at this time, the heightening layer 206 and the CF ITO layer 202 can be regarded as one layer, when the heightening layer 206 and the CF ITO layer 202 are manufactured, a thicker CF ITO layer is manufactured, the thickness of the CF ITO layer is the sum of the heightening layer and the original CF ITO layer, and then the CF ITO with partial thickness is etched at the position corresponding to the second ITO203, so that the height difference corresponding to the first ITO204 and the second ITO203 is formed.
The embodiment of the invention also correspondingly provides a method for manufacturing the naked eye 3D display device, which comprises the following steps of:
s501, manufacturing a heightening layer at a position corresponding to the first ITO, wherein the heightening layer is made of a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of the PVX layer at the position corresponding to the first ITO and the thickness of the second ITO;
and S502, manufacturing a CF ITO layer.
Because the manufacture of the heightening layer is added before the CF ITO layer is manufactured, the position of the CF ITO layer corresponding to the first ITO is heightened, and the distance between the CF ITO layer and the first ITO is further reduced.
Further, the material used for the elevated layer is OC material.
Preferably, the thickness of the enhancement layer is specifically:
the PVX layer 205 corresponds to the sum of the thickness at the first ITO204 and the thickness of the second ITO 203. At this time, the distance between the CF ITO layer 202 and the first ITO204 is the same as the distance between the CF ITO layer 202 and the second ITO203, and occurrence of bright lines is avoided.
The embodiment of the invention also provides a method for manufacturing a naked eye 3D display device, as shown in fig. 6, the method includes:
s601, manufacturing a CF ITO layer;
step S602, etching away a part of the thickness of CF ITO at the position corresponding to the second ITO.
At the moment, at the position corresponding to the first ITO, the thickness of the CF ITO layer is thicker, the distance between the CF ITO layer and the first ITO is also reduced, and further the difference between the distance between the CF ITO layer and the first ITO and the difference between the distance between the CF ITO layer and the second ITO is reduced, and when the thickness of the CF ITO layer is proper, the difference between the distance between the CF ITO layer and the first ITO and the difference between the distance between the CF ITO layer and the second ITO are zero, so that the generation of bright lines is avoided, and a better display effect is obtained.
It should be noted that while the operations of the method of the present invention are depicted in the drawings in a particular order, this does not require or imply that the operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Rather, the steps depicted in the flowcharts may change the order of execution. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. A naked eye 3D display device, comprising: the liquid crystal grating comprises a first glass substrate and a PVX layer, a first ITO is arranged between the first glass substrate and the PVX layer, a second ITO is arranged on one side of the PVX layer far away from the first glass substrate, the first ITO and the second ITO are arranged at intervals,
the liquid crystal grating also comprises a heightening layer, wherein the heightening layer is arranged between the color film indium tin oxide (CF ITO) layer and the second glass substrate, the position of the heightening layer corresponds to the first ITO, the material of the heightening layer is a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of the PVX layer corresponding to the first ITO and the thickness of the second ITO;
the liquid crystal grating comprises a plurality of black state parts and a plurality of white state parts, the black state parts and the white state parts are arranged at intervals, each black state part and each white state part respectively comprise X pieces of first ITO and second ITO, rated voltage is applied to the ITO of the black state parts, and the ITO of the white state parts does not give voltage, so that the effect of 3D display is realized.
2. The apparatus of claim 1, wherein the material of the height-enhancing layer is an insulating material.
3. The apparatus of claim 2, wherein the material used for the enhancement layer is an organic resin OC material.
4. The apparatus of claim 1, wherein the material of the enhancement layer is ITO.
5. The apparatus according to any of claims 1-4, wherein the thickness of the enhancement layer is in particular:
the PVX layer corresponds to the sum of the thickness of the first ITO and the thickness of the second ITO.
6. A method of manufacturing a naked eye 3D display device according to any one of claims 1 to 3, comprising:
manufacturing a heightening layer at a position corresponding to the first ITO, wherein the material of the heightening layer is a transparent material, and the thickness of the heightening layer is less than twice of the sum of the thickness of the PVX layer corresponding to the first ITO and the thickness of the second ITO;
and manufacturing a color film indium tin oxide CF ITO layer.
7. The method of claim 6, wherein the material used for the enhancement layer is an organic resin OC material.
8. The method of claim 6, wherein the thickness of the enhancement layer is specified by:
the PVX layer corresponds to the sum of the thickness of the first ITO and the thickness of the second ITO.
9. A method for manufacturing a naked eye 3D display device according to claim 1 or 4, wherein the method comprises the following steps:
manufacturing a color film indium tin oxide CF ITO layer;
and etching away part of the thickness of the CF ITO at the position corresponding to the second ITO, so that the difference between the distance between the CF ITO layer and the first ITO and the distance between the CF ITO layer and the second ITO is zero.
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