CN106200067B - Optical waveguide display device and its manufacturing method - Google Patents
Optical waveguide display device and its manufacturing method Download PDFInfo
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- CN106200067B CN106200067B CN201610586466.3A CN201610586466A CN106200067B CN 106200067 B CN106200067 B CN 106200067B CN 201610586466 A CN201610586466 A CN 201610586466A CN 106200067 B CN106200067 B CN 106200067B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
Abstract
The invention discloses a kind of optical waveguide display device and its manufacturing methods, belong to field of display technology.Optical waveguide display device includes: two display base plates, the liquid crystal between two display base plates and the light source that two display base plate sides are arranged in box forming, liquid crystal has first refractive index when being not powered on pressure, there is the second refractive index in making alive, first refractive index, the refractive index of display base plate and the second refractive index are sequentially increased.The present invention solves the problems, such as that the luminous mode in control work zone domain is more single, enriches the luminous mode in control work zone domain, is used for optical waveguide display device.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of optical waveguide display device and its manufacturing method.
Background technique
Optical waveguide display device may include to the array substrate and cover board of box forming, between array substrate and cover board
Filler and the light source of array substrate Yu cover board side is set.Filler can be by liquid crystal and high molecular polymer group
At refractive index of the liquid crystal when voltage is not added is different from refractive index when making alive, and (big with the refractive index of high molecular polymer
In the refractive index of glass) it is identical.
The display area of optical waveguide display device can be made of multiple subregions, luminous and another in a part of subregion
When part subregion does not shine, which can show image.In the related technology, light source is to be greater than filler and cover board
The angle of (material is usually glass) corresponding critical angle injects light to cover board.It, can when a certain subregion of control does not shine
With not to the liquid crystal applied voltages of the subregion, at this point, incident ray can pass through liquid crystal and polyphosphazene polymer before directive cover board
Object is closed, since the liquid crystal of the subregion and the refractive index of high molecular polymer are identical, and is all larger than the refractive index of glass, so,
The direction of propagation of incident ray after liquid crystal and high molecular polymer will not change, when incident ray reaches cover board
When, incident ray meets the condition of total reflection, so can be totally reflected on the cover board, so that the subregion does not shine.?
It, can be to the liquid crystal applied voltages of the subregion, due to applying to the liquid crystal of the subregion when controlling a certain subregion and shining
After voltage, the refractive index of the liquid crystal of the subregion is changed, and incident ray is passing through liquid crystal and reaching high molecular polymer
When, liquid crystal is different from the refractive index of high molecular polymer, so, liquid crystal can reflect on high molecular polymer, and final
Cover board is refracted to, so that the incident angle that a part reaches the incident ray of cover board is corresponding with cover board critical no more than filler
Angle, that is, the incident ray for reaching cover board is unsatisfactory for the condition of total reflection, so total reflection can not occur on the cover board and can be from
Cover board projects, so that the subregion shines.
Since in the related technology, optical waveguide display device when control work zone domain shines, is reached on cover board by changing
Incident ray incident angle, destroy the condition that is totally reflected on the cover board of light so that subregion shines, because
This, the luminous mode in control work zone domain is more single.
Summary of the invention
In order to solve the problems, such as that the luminous mode in control work zone domain is more single, the present invention provides a kind of displays of optical waveguide to fill
It sets and its manufacturing method.The technical solution is as follows:
On the one hand, a kind of optical waveguide display device is provided, the optical waveguide display device includes: two to box forming
Display base plate, the liquid crystal between two display base plates and the light source that described two display base plate sides are set,
The liquid crystal when being not powered on pressure have first refractive index, in making alive have the second refractive index, described first
Refractive index, the refractive index of the display base plate and second refractive index are sequentially increased.
Optionally, incidence angle of the light that the light source issues on the display base plate is greater than preset threshold angle, described
Preset threshold angle is the liquid crystal critical angle corresponding with the display base plate when being not powered on pressure.
Optionally, the angle of differently- oriented directivity of the liquid crystal when being not powered on pressure and the incident direction of the light is first
The angle of the incident direction of angle, differently- oriented directivity of the liquid crystal in making alive and the light is the second angle,
Wherein, the absolute value of first angle is less than the first preset threshold, second angle and 90 degree of difference it is exhausted
To value less than the second preset threshold, and the absolute value of first angle is less than the absolute value of second angle.
Optionally, differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel with the incident direction of the light；
Differently- oriented directivity of the liquid crystal in making alive is vertical with the incident direction of the light.
Optionally, the preset threshold angle is θc,
Wherein,ForArcsin value, ngFor the first refractive index, the naFor the display base plate
Refractive index.
On the other hand, a kind of manufacturing method of optical waveguide display device is provided, which comprises
Two display base plates shape box；
The filling liquid crystal between two display base plates shaped to box, the liquid crystal have first refractive when being not powered on pressure
Rate has the second refractive index, the first refractive index, the refractive index of the display base plate and second refraction in making alive
Rate is sequentially increased；
In the two display base plate sides shaped to box, light source is set.
Optionally, incidence angle of the light that the light source issues on the display base plate is greater than preset threshold angle, described
Preset threshold angle is the liquid crystal critical angle corresponding with the display base plate when being not powered on pressure.
Optionally, the angle of differently- oriented directivity of the liquid crystal when being not powered on pressure and the incident direction of the light is first
The angle of the incident direction of angle, differently- oriented directivity of the liquid crystal in making alive and the light is the second angle,
Wherein, the absolute value of first angle is less than the first preset threshold, second angle and 90 degree of difference it is exhausted
To value less than the second preset threshold, and the absolute value of first angle is less than the absolute value of second angle.
Optionally, differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel with the incident direction of the light；
Differently- oriented directivity of the liquid crystal in making alive is vertical with the incident direction of the light.
Optionally, the preset threshold angle is θc,
Wherein,ForArcsin value, ngFor the first refractive index, the naFor the display base plate
Refractive index.
In conclusion the optical waveguide is aobvious the embodiment of the invention provides a kind of optical waveguide display device and its manufacturing method
Liquid crystal is only provided only between two display base plates in showing device, and liquid crystal has first refractive index when being not powered on pressure,
There is the second refractive index when making alive.Need to control the subregion in optical waveguide display device shine when, can forbid to liquid
Crystalline substance applies voltage, and the refractive index of liquid crystal is less than the refractive index of display base plate at this time, and the light that light source issues is on display base plate surface
It is unsatisfactory for the condition of total reflection, therefore has light across display base plate and projects, so that the subregion shines.That is, this hair
By way of the bright refractive index controlling liquid crystal is less than display base plate so that light be unsatisfactory for total reflection condition and from display base plate
On subregion project, so, enrich the luminous mode in control work zone domain.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1-1 is a kind of application scenarios schematic diagram for backlight module that the relevant technologies provide；
Fig. 1-2 is a kind of structural schematic diagram for optical waveguide display device that the relevant technologies provide；
Fig. 2-1 is a kind of structural schematic diagram of optical waveguide display device provided in an embodiment of the present invention；
Fig. 2-2 is a kind of mesomorphic state schematic diagram when being not powered on pressure provided in an embodiment of the present invention；
Mesomorphic state schematic diagram when Fig. 2-3 is a kind of making alive provided in an embodiment of the present invention；
Fig. 3 is a kind of method flow diagram of the manufacturing method of optical waveguide display device provided in an embodiment of the present invention.
Current above-mentioned attached drawing, it has been shown that the specific embodiment of the present invention will be hereinafter described in more detail.These attached drawings
It is limited the scope of the inventive concept with verbal description any mode that is not intended to pass through, but current is with reference to specific embodiment
Those skilled in the art illustrate idea of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
As Figure 1-1, in the related technology, incident light is provided for display panel A usually using side entrance back module 0.
The side entrance back module 0 may include light source 01 and light guide plate 02, wherein what light guide plate 02 was arranged in display panel A enters light
The side of light guide plate 02 is arranged in side, light source 01, and the light that light source 01 issues can inject light guide plate from the side of light guide plate 02, and
It is projected from the light emission side of light guide plate 02, and then injects display panel A.
Exemplary, light is when from the first medium incident to second of medium, if the refractive index of the first medium is greater than
The refractive index of second of medium, and incident angle of the light on second of medium is greater than the first medium and second of medium pair
The critical angle answered, then light can be totally reflected in second of dielectric surface, specifically, the first medium and second of Jie
The corresponding critical angle of matter can be the SIN function of the ratio of the refractive index of the refractive index and second of medium of the first medium
It is reciprocal.
As shown in Figs. 1-2, in the related technology, there are a kind of optical waveguide display device 1, optical waveguide display device 1 be can wrap
It includes and exists to the array substrate 11 and cover board 12 of box forming, the filler 13 between array substrate 11 and cover board 12 and setting
The light source 14 of array substrate 11 and 12 side of cover board.Filler 13 can be made of liquid crystal 131 and high molecular polymer 132, liquid
Refractive index of the crystalline substance 131 when voltage is not added is different from refractive index when making alive, and the refractive index with high molecular polymer 132
(greater than the refractive index of glass) is identical.The display area of optical waveguide display device 1 can be made of multiple subregions, in a part
When subregion shines and another part subregion does not shine, which can show image.In the related technology, light source 14 with
Greater than the critical angle corresponding with cover board 12 (material is usually glass) of filler 13 when voltage is not added angle to cover board 12 (or
Person's array substrate 11) inject light.Exemplary, which can be θc,Wherein,ForIt is anti-
Sine value, n1(or array substrate 11) refractive index of filler 13, n when for voltage is not added2For the refractive index of cover board 12.
When a certain subregion B1 of control does not shine, voltage can not be applied to the liquid crystal 131 of subregion B1, at this point,
Incident ray can be by liquid crystal 131 and high molecular polymer 132, due to the liquid crystal of subregion B1 before directive cover board 12
131 is identical with the refractive index of high molecular polymer 132, and is all larger than the refractive index of glass, so, by liquid crystal 131 and high score
The direction of propagation of incident ray after sub- polymer 132 will not change, when incident ray reaches cover board 12, incident light
Line meets the condition of total reflection, so can be totally reflected on cover board 12, so that subregion B1 does not shine.Controlling certain
When one subregion B2 shines, voltage can be applied to the liquid crystal 131 of subregion B2, due in the liquid crystal to subregion B2
After 131 apply voltage, the refractive index of the liquid crystal 131 of subregion B2 is changed, and incident ray is passing through liquid crystal 131 and arriving
When up to high molecular polymer 132, liquid crystal 131 is different from the refractive index of high molecular polymer 132, so, liquid crystal 131 can be in high score
It is reflected on sub- polymer 1, and finally refracts to cover board 12, so that a part reaches the incidence angle of the incident ray of cover board 12
Degree is not more than filler critical angle corresponding with cover board, that is, the incident ray for reaching cover board is unsatisfactory for the condition of total reflection, institute
It is totally reflected and can be projected from cover board 12 can not occur on cover board 12, so that subregion B2 shines.
Due to when control work zone domain B2 shines, being in the related technology by changing the incident ray on arrival cover board 12
Incident angle destroys the condition that light is totally reflected on cover board 12, so that subregion B2 shines, therefore, control
Region B2 luminous mode is more single.
As shown in Fig. 2-1, the embodiment of the invention provides a kind of optical waveguide display devices 2, which can
To include: two display base plates 21 to box forming, the liquid crystal 22 between two display base plates 21 and be arranged at two
The light source 23 of 21 side of display base plate,
Liquid crystal 22 when being not powered on pressure have first refractive index, in making alive have the second refractive index, first refractive index,
The refractive index of display base plate 21 and the second refractive index are sequentially increased.
In conclusion the embodiment of the invention provides a kind of optical waveguide display device, in the optical waveguide display device two
Liquid crystal is only provided only between a display base plate, and liquid crystal has first refractive index when being not powered on pressure, has in making alive
Second refractive index.Need to control the subregion in optical waveguide display device shine when, can forbid to liquid crystal applied voltages, this
When liquid crystal refractive index be less than display base plate refractive index, light source issue light display base plate surface be unsatisfactory for total reflection
Condition, therefore have light across display base plate and project, so that the subregion shines.That is, the present invention passes through control liquid crystal
Refractive index be less than display base plate mode so that light is unsatisfactory for total reflection condition and penetrates from the subregion on display base plate
Out, so, the luminous mode in control work zone domain is enriched.
Optionally, incidence angle M of the light that light source 23 issues on display base plate 21 is greater than preset threshold angle, preset threshold
Angle can be the critical angle corresponding with display base plate 21 of liquid crystal 22 when being not powered on pressure.Specifically, the preset threshold angle can be
θc,Wherein,ForArcsin value, ngFor first refractive index, naFor the refraction of display base plate
Rate.Since incidence angle of the light on display base plate 21 that light source 23 issues is greater than preset threshold angle, needing to control optical waveguide
When a certain subregion in display device does not shine, voltage can be applied to liquid crystal 22, the refractive index of liquid crystal 22 is greater than aobvious at this time
Show the refractive index of substrate 21, incidence angle of the light that light source 23 issues on display base plate 21 is greater than preset threshold angle, that is, light
The light that source 23 issues meets total reflection condition, and can be totally reflected on display base plate 21, at this time without light from showing
Show that the subregion on substrate 21 projects, so that the subregion in optical waveguide display device does not shine.
Fig. 2-2 is a kind of mesomorphic state schematic diagram when being not powered on pressure provided in an embodiment of the present invention, and Fig. 2-3 is the present invention
Mesomorphic state schematic diagram when a kind of making alive that embodiment provides.Fig. 2-2 and Fig. 2-3 are please referred to, liquid crystal 22 is being not powered on pressure
When differently- oriented directivity and the angle of incident direction of light be the first included angle A, differently- oriented directivity and light of the liquid crystal 11 in making alive
The angle of the incident direction of line is the second included angle B, wherein the absolute value of the first included angle A is less than the first preset threshold namely first
Included angle A and 0 degree of absolute value are less than the first preset threshold, and the second included angle B and 90 degree of absolute value of the difference are less than the second default threshold
Value, and the absolute value of the first included angle A is less than the absolute value of the second included angle B.
It should be noted that liquid crystal 22 is to light when the differently- oriented directivity of liquid crystal 22 is parallel with the incident direction of light
Refractive index reaches minimum value, when the differently- oriented directivity of liquid crystal 22 is vertical with the incident direction of light, refraction of the liquid crystal 22 to light
Rate reaches maximum value.That is, the absolute value in the angle of the incident direction of the differently- oriented directivity and light of liquid crystal 22 is greater than or equal to 0
Degree, and be less than or equal to 90 degree when, the size of the absolute value of the angle of the incident direction of the differently- oriented directivity and light of liquid crystal 22 with
The refractive index of liquid crystal is directly proportional, and the absolute value of the angle of the incident direction of the differently- oriented directivity and light of liquid crystal 22 is bigger, liquid crystal 22
Refractive index it is bigger, the absolute value of the angle of the incident direction of the differently- oriented directivity and light of liquid crystal 22 is smaller, the refractive index of liquid crystal
It is smaller.
It can control differently- oriented directivity of the liquid crystal 22 when being not powered on pressure in the embodiment of the present invention and be parallel to light as far as possible
Incident direction, that is, control the first included angle A absolute value less than the first preset threshold so that liquid crystal tool when being not powered on pressure
There is lesser refractive index；Control differently- oriented directivity of the liquid crystal 22 in making alive as far as possible perpendicular to the incident direction of light,
That is, control the second included angle B absolute value and 90 degree of difference less than the second preset threshold so that the tool when being not powered on pressure of liquid crystal 22
There is biggish refractive index, namely liquid crystal is made to make refractive index be greater than refractive index when voltage is not added in making alive.
Preferably, differently- oriented directivity of the liquid crystal 22 when being not powered on pressure is parallel with the incident direction of light, and liquid crystal 22 is adding
Differently- oriented directivity when voltage is vertical with the incident direction of light.When the differently- oriented directivity of liquid crystal is parallel with the incident direction of light,
Liquid crystal reaches minimum value to the refractive index of light, and when the differently- oriented directivity of liquid crystal is vertical with the incident direction of light, liquid crystal is to light
The refractive index of line reaches maximum value.First refractive index and the second refractive index are larger at this time, can guarantee the folding of display base plate
The rate of penetrating is placed exactly between first refractive index and the second refractive index.
Please refer to Fig. 2-2, need to control a certain subregion in optical waveguide display device shine when, can forbid to liquid
Crystalline substance 22 applies voltage, and the refractive index of liquid crystal 22 is less than the refractive index of display base plate 21 at this time, and the light that light source 23 issues is being shown
Incidence angle M on substrate 21 is greater than preset threshold angle, and the light that light source issues is unsatisfactory for total reflection on 21 surface of display base plate
Condition, therefore have light across display base plate 21 and project, so that the subregion shines.Fig. 2-3 is please referred to, is needing to control
When a certain subregion in optical waveguide display device does not shine, voltage can be applied to liquid crystal 22, at this time the refractive index of liquid crystal 22
Greater than the refractive index of display base plate 21, incidence angle M of the light that light source 23 issues on display base plate 21 is greater than preset threshold angle,
The light that light source issues meets the condition of total reflection on 21 surface of display base plate, therefore light can occur on 21 surface of display base plate
Total reflection does not have light across display base plate 21, so that the subregion does not shine.
In conclusion the embodiment of the invention provides a kind of optical waveguide display device, in the optical waveguide display device two
Liquid crystal is only provided only between a display base plate, and liquid crystal has first refractive index when being not powered on pressure, has in making alive
Second refractive index.Need to control the subregion in optical waveguide display device shine when, can forbid to liquid crystal applied voltages, this
When liquid crystal refractive index be less than display base plate refractive index, light source issue light display base plate surface be unsatisfactory for total reflection
Condition, therefore have light across display base plate and project, so that the subregion shines.That is, the present invention passes through control liquid crystal
Refractive index be less than display base plate mode so that light is unsatisfactory for total reflection condition and penetrates from the subregion on display base plate
Out, so, the luminous mode in control work zone domain is enriched.
As shown in figure 3, the embodiment of the invention provides a kind of manufacturing method of optical waveguide display device, which is shown
The manufacturing method of device may include:
Step 301 shapes two display base plates to box.
Step 302, the filling liquid crystal between two display base plates shaped to box, liquid crystal have first when being not powered on pressure
Refractive index has the second refractive index in making alive, and first refractive index, the refractive index of display base plate and the second refractive index successively increase
Greatly.
Light source is arranged in the two display base plate sides shaped to box in step 303.
In conclusion the embodiment of the invention provides a kind of manufacturing method of optical waveguide display device, due to aobvious at two
Show and be simply filled with liquid crystal between substrate, and liquid crystal has first refractive index when being not powered on pressure, has second in making alive
Refractive index.When needing to control the subregion in optical waveguide display device and shining, can forbid to liquid crystal applied voltages, at this time liquid
Brilliant refractive index is less than the refractive index of display base plate, and the light that light source issues is unsatisfactory for the item of total reflection on display base plate surface
Part, therefore have light across display base plate and project, so that the subregion shines.That is, the present invention passes through control liquid crystal
Refractive index is less than the mode of display base plate, so that light is unsatisfactory for total reflection condition and projects from the subregion on display base plate,
So enriching the luminous mode in control work zone domain.
Optionally, incidence angle of the light that light source issues on display base plate is greater than preset threshold angle, and preset threshold angle can
Think the liquid crystal critical angle corresponding with display base plate when being not powered on pressure.Specifically, the preset threshold angle can be θc,Wherein,ForArcsin value, ngFor first refractive index, naFor the refractive index of display base plate.By
It is greater than preset threshold angle in incidence angle of the light that light source issues on display base plate, in needing to control optical waveguide display device
A certain subregion when not shining, can be to liquid crystal applied voltages, the refractive index of liquid crystal is greater than the refractive index of display base plate at this time,
Incidence angle of the light that light source issues on display base plate is greater than preset threshold angle, that is, the light satisfaction that light source issues is all-trans
Condition is penetrated, and can be totally reflected on display base plate, projects, makes from the subregion on display base plate without light at this time
The subregion obtained in optical waveguide display device does not shine.
The angle of the incident direction of differently- oriented directivity and light of the liquid crystal when being not powered on pressure is the first angle, and liquid crystal is being powered on
The angle of the incident direction of differently- oriented directivity and light when pressure is the second angle, wherein the absolute value of the first angle is less than first
Preset threshold namely the first angle and 0 degree of absolute value are less than the first preset threshold, the second angle and 90 degree of absolute value of the difference
Less than the second preset threshold, and the absolute value of the first angle is less than the absolute value of the second angle.It should be noted that when liquid crystal
When differently- oriented directivity is parallel with the incident direction of light, liquid crystal reaches minimum value to the refractive index of light, when the differently- oriented directivity of liquid crystal
When vertical with the incident direction of light, liquid crystal reaches maximum value to the refractive index of light.That is, in the differently- oriented directivity and light of liquid crystal
The absolute value of the angle of the incident direction of line is greater than or equal to 0 degree, and when less than or equal to 90 degree, the differently- oriented directivity and light of liquid crystal
The size of the absolute value of the angle of the incident direction of line and the refractive index of liquid crystal are directly proportional, the differently- oriented directivity of liquid crystal and entering for light
The absolute value for penetrating the angle in direction is bigger, and the refractive index of liquid crystal is bigger, the folder of the incident direction of the differently- oriented directivity and light of liquid crystal
The absolute value at angle is smaller, and the refractive index of liquid crystal is smaller.
It can control the incidence side that differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel to light as far as possible in the present invention
To that is, the absolute value of the angle of the incident direction of differently- oriented directivity and light of the control liquid crystal when being not powered on pressure is less than first
Preset threshold, so that liquid crystal has lesser refractive index when being not powered on pressure；It is most to control differently- oriented directivity of the liquid crystal in making alive
The possible incident direction perpendicular to light, that is, the incident direction of differently- oriented directivity and light of the control liquid crystal in making alive
Angle absolute value less than the second preset threshold so that liquid crystal has biggish refractive index when being not powered on pressure, namely make
Liquid crystal makes refractive index be greater than refractive index when voltage is not added in making alive.
Preferably, differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel with the incident direction of light, and liquid crystal is in making alive
When differently- oriented directivity it is vertical with the incident direction of light.When the differently- oriented directivity of liquid crystal is parallel with the incident direction of light, liquid crystal
Minimum value is reached to the refractive index of light, when the differently- oriented directivity of liquid crystal is vertical with the incident direction of light, liquid crystal is to light
Refractive index reaches maximum value.First refractive index and the second refractive index are larger at this time, can guarantee the refractive index of display base plate
It is placed exactly between first refractive index and the second refractive index.
Please refer to Fig. 2-2, need to control a certain subregion in optical waveguide display device shine when, can forbid to liquid
Crystalline substance 22 applies voltage, and the refractive index of liquid crystal 22 is less than the refractive index of display base plate 21 at this time, and the light that light source 23 issues is being shown
Incidence angle M on substrate 21 is greater than preset threshold angle, and the light that light source issues is unsatisfactory for total reflection on 21 surface of display base plate
Condition, therefore have light across display base plate 21 and project, so that the subregion shines.Fig. 2-3 is please referred to, is needing to control
When a certain subregion in optical waveguide display device does not shine, voltage can be applied to liquid crystal 22, at this time the refractive index of liquid crystal 22
Greater than the refractive index of display base plate 21, incidence angle M of the light that light source 23 issues on display base plate 21 is greater than preset threshold angle,
The light that light source issues meets the condition of total reflection on 21 surface of display base plate, therefore light can occur on 21 surface of display base plate
Total reflection does not have light across display base plate 21, so that the subregion does not shine.
In conclusion the embodiment of the invention provides a kind of manufacturing method of optical waveguide display device, due to aobvious at two
Show and be simply filled with liquid crystal between substrate, and liquid crystal has first refractive index when being not powered on pressure, has second in making alive
Refractive index.When needing to control the subregion in optical waveguide display device and shining, can forbid to liquid crystal applied voltages, at this time liquid
Brilliant refractive index is less than the refractive index of display base plate, and the light that light source issues is unsatisfactory for the item of total reflection on display base plate surface
Part, therefore have light across display base plate and project, so that the subregion shines.That is, the present invention passes through control liquid crystal
Refractive index is less than the mode of display base plate, so that light is unsatisfactory for total reflection condition and projects from the subregion on display base plate,
So enriching the luminous mode in control work zone domain.
It is apparent to those skilled in the art that for convenience and simplicity of description, the light wave of foregoing description
The specific work process of the manufacturing method of display device is led, it can be mutual with the process in aforementioned optical waveguide display device embodiment
With reference to details are not described herein for the embodiment of the present invention.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of optical waveguide display device, which is characterized in that the optical waveguide display device includes: two displays to box forming
Substrate, the liquid crystal between two display base plates and the light source that described two display base plate sides are set,
The liquid crystal has first refractive index when being not powered on pressure, has the second refractive index, the first refractive in making alive
Rate, the refractive index of the display base plate and second refractive index are sequentially increased, and the light that the light source issues is in the display
Incidence angle on substrate is greater than preset threshold angle, and the preset threshold angle is the liquid crystal and the display base when being not powered on pressure
The corresponding critical angle of plate.
2. optical waveguide display device according to claim 1, which is characterized in that
The angle of differently- oriented directivity of the liquid crystal when being not powered on pressure and the incident direction of the light is the first angle, the liquid
The angle of differently- oriented directivity of the crystalline substance in making alive and the incident direction of the light is the second angle,
Wherein, the absolute value of first angle is less than the first preset threshold, second angle and 90 degree of absolute value of the difference
Less than the second preset threshold, and the absolute value of first angle is less than the absolute value of second angle.
3. optical waveguide display device according to claim 2, which is characterized in that
Differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel with the incident direction of the light；
Differently- oriented directivity of the liquid crystal in making alive is vertical with the incident direction of the light.
4. optical waveguide display device according to claim 1, which is characterized in that
The preset threshold angle is θc,
Wherein,ForArcsin value, ngFor the first refractive index, the naFor the refraction of the display base plate
Rate.
5. a kind of manufacturing method of optical waveguide display device, which is characterized in that the described method includes:
Two display base plates shape box；
The filling liquid crystal between two display base plates shaped to box, the liquid crystal have first refractive index when being not powered on pressure,
There is the second refractive index, the first refractive index, the refractive index of the display base plate and second refractive index in making alive
It is sequentially increased；
Light source is set in the two display base plate sides shaped to box, the light that the light source issues is on the display base plate
Incidence angle is greater than preset threshold angle, and the preset threshold angle is that the liquid crystal is corresponding with the display base plate when being not powered on pressure
Critical angle.
6. according to the method described in claim 5, it is characterized in that,
The angle of differently- oriented directivity of the liquid crystal when being not powered on pressure and the incident direction of the light is the first angle, the liquid
The angle of differently- oriented directivity of the crystalline substance in making alive and the incident direction of the light is the second angle,
Wherein, the absolute value of first angle is less than the first preset threshold, second angle and 90 degree of absolute value of the difference
Less than the second preset threshold, and the absolute value of first angle is less than the absolute value of second angle.
7. according to the method described in claim 6, it is characterized in that,
Differently- oriented directivity of the liquid crystal when being not powered on pressure is parallel with the incident direction of the light；
Differently- oriented directivity of the liquid crystal in making alive is vertical with the incident direction of the light.
8. according to the method described in claim 5, it is characterized in that,
The preset threshold angle is θc,
Wherein,ForArcsin value, ngFor the first refractive index, the naFor the refraction of the display base plate
Rate.
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