CN106569368B - Reflective display and its front optical module - Google Patents
Reflective display and its front optical module Download PDFInfo
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- CN106569368B CN106569368B CN201510657254.5A CN201510657254A CN106569368B CN 106569368 B CN106569368 B CN 106569368B CN 201510657254 A CN201510657254 A CN 201510657254A CN 106569368 B CN106569368 B CN 106569368B
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- reflective display
- turn
- emitting surface
- guide plate
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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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a kind of reflective display and its front optical module, front optical module includes light guide plate, light source and turn light rays film.Light guide plate includes incidence surface, interior light-emitting surface and outer light-emitting surface.Incidence surface is adjacent between interior light-emitting surface and outer light-emitting surface.Outer light-emitting surface appears.Light source is the incidence surface to irradiate light guide plate.Turn light rays film is located at by interior light-emitting surface, and the direction of travel to deflect the light from light guide plate.The sharp angle of the normal of light and interior light-emitting surface after steering is less than the sharp angle for turning the normal of forward light and interior light-emitting surface.Whereby, reflective display of the invention and its front optical module, the incidence angle angle that the light after steering enters reflective display panel can be effectively lowered, and can be left front optical module along more vertical direction and be entered in reflective display panel.
Description
Technical field
The present invention relates to a kind of display devices, and in particular to a kind of reflective display and its front optical module.
Background technique
Colorized optical filtering is mainly arranged in the color display technology of color electric reader in reflective display panel at present
Piece (Color filter).Reflective display panel includes multiple microcapsules.Colored filter includes multiple with different colours
The sub-pixel area of (such as: red, green and blue).It is located at the gray scale variation of the microcapsules under different sub-pixel areas by control, it can
Color electric reader is set to generate full-color image effect.
Typically, since reflective display panel itself does not shine, therefore external light source is very relied on, once in the external world
In the weaker environment of light source, reflective display panel can not clearly illustrate picture.In order to solve the problems, can will before
Optical module is set in front of the display surface of reflective display panel, to provide reflective display panel in external light source deficiency
Enough light shows picture with benefit.
However, when front optical module is applied to color electric reader, for display panel, excessive angle of incidence of light
Degree be easy to cause the deviation of display color.Specifically, Fig. 1 is seen, this figure is painted the light of representative color electronic reader 900
Road schematic diagram.Color electric reader 900 includes reflective display panel 910, colored filter 920 and front optical module 930.
Colored filter 920 is between reflective display panel 910 and front optical module 930.Colored filter 920 includes filtered region
921,922 and 923.The passable optical band of filtered region 921,922 and 923 is different.Front optical module 930 includes light source 931
And light guide plate 932.When in use, the light that light source 931 generates can be injected in light guide plate 932 by the side of light guide plate 932, and
Projected outside light guide plate 932 by the bottom surface of light guide plate 932, and by after colored filter 920 again by 910 institute of reflective display panel
Reflection.
Furthermore, it is understood that light S1 emitted by 932 bottom surface of light guide plate can be arrived at by colored filter 920 it is reflective
Display panel 910.Light S1 can be reflected into light S2 by reflective display panel 910.This light S2 can pass through colored filter
920, and color electric reader 900 is left from 932 upper surface of light guide plate.When the light-emitting angle ψ of light S1 is excessive, it is easy to lead
Light S1 is caused to pass through different filtered regions 922 and 923 respectively from light S2, to cause the mistake or deviation of display color.
In addition, Fig. 2 depicts the light-emitting angle of typical front optical module and the relational graph of luminous intensity, by Ben Tu it is found that in typical preceding light
In module, the light-emitting angle of most of light is 83 degree, and the light that goes out of such wide-angle is particularly easy to cause the mistake of display color
Or deviation.
Summary of the invention
The purpose of the present invention is to provide a kind of reflective display and its front optical module, reflective display can be allowed
Light enters in reflective display panel along more vertical direction, therefore, when this reflective display shows colored shadow
When picture, the incident light of reflective display panel can avoid from the colored filter sub-pixel region of mistake, to reduce color
The degree of deviation.
An embodiment according to the present invention, a kind of front optical module include light guide plate, light source and turn light rays film.It is guide-lighting
Plate includes incidence surface, interior light-emitting surface and outer light-emitting surface.Incidence surface is adjacent between interior light-emitting surface and outer light-emitting surface.Light source to
Irradiate the incidence surface of light guide plate.Turn light rays film is located at by interior light-emitting surface, and the traveling to deflect the light from light guide plate
Direction.The sharp angle of light after steering and the normal of interior light-emitting surface, which is less than, turns the sharp of forward light and the normal of interior light-emitting surface
Angle.
An embodiment according to the present invention, a kind of reflective display include light guide plate, light source, reflective display panel
Plate and turn light rays film.Light guide plate includes incidence surface and light-emitting surface.Incidence surface is adjacent to light-emitting surface.Light source is led to irradiate
The incidence surface of tabula rasa.Reflective display panel includes display surface.Light-emitting surface of the display surface towards light guide plate.Turn light rays film is located at
Between the display surface of reflective display panel and the light-emitting surface of light guide plate.Turn light rays film is to deflect the light from light guide plate
Direction of travel and make this light towards display surface advance.Before the sharp angle of the normal of light and display surface after steering is less than steering
Light and display surface normal sharp angle.
In the above-described embodiment, compared to turn a forward light, the light after steering be bordering on more partially interior light-emitting surface and/or
The normal of display surface, therefore, the incidence angle angle that the light after steering enters display surface can be effectively lowered, and can be along more
It leaves front optical module and enters in reflective display panel in vertical direction.
Compared with prior art, the invention has the following beneficial effects: reflective displays of the invention and its preceding light
Module can allow light to enter in reflective display panel along more vertical direction, therefore, when this reflective display is aobvious
When showing chromatic image, the incident light of reflective display panel can avoid from the colored filter sub-pixel region of mistake, thus
Reduce the degree of color error ratio.
The above is only to illustrate the problem of present invention is to be solved, technical means to solve problem and its generate
The effect of etc., detail of the invention by below embodiment and correlative type in be discussed in detail.
Detailed description of the invention
For the embodiment of the present invention can be clearer and more comprehensible, institute's accompanying drawings are described as follows:
Fig. 1 is painted the light path schematic diagram of representative color electronic reader；
Fig. 2 depicts the light-emitting angle of typical front optical module and the relational graph of luminous intensity；
Fig. 3 is painted the diagrammatic cross-section of the reflective display of an embodiment according to the present invention；
Fig. 4 is painted the index path of the reflective display of Fig. 1；
Fig. 5 is painted luminous intensity received by the display surface of the reflective display of Fig. 1 illustrated embodiment and enters with it
The relational graph of firing angle angle；
Fig. 6 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention；
Fig. 7 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention；And
Fig. 8 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention.
Specific embodiment
Hereinafter multiple embodiments of the invention will be disclosed with schema, as clearly stated, the details in many practices
It will be explained in the following description.However, those skilled in the art are it should be appreciated that in part embodiment party of the present invention
In formula, the details in these practices is not necessary, therefore does not apply to limit the present invention.In addition, for the sake of simplifying schema, one
A little existing usual structures will be painted in a manner of simply illustrating in the drawings with element.
Fig. 3 is painted the diagrammatic cross-section of the reflective display of an embodiment according to the present invention.As shown in figure 3,
In present embodiment, reflective display includes light source 100, light guide plate 200, turn light rays film 300 and reflective display
Panel 400.Light source 100, light guide plate 200 and turn light rays film 300 can collectively form front optical module.Light guide plate 200 includes into light
Face 210, interior light-emitting surface 220 and outer light-emitting surface 230.Incidence surface 210 is adjacent between interior light-emitting surface 220 and outer light-emitting surface 230.Light
Incidence surface 210 of the source 100 to irradiate light guide plate 200.For example, light source 100 can be located at by incidence surface 210, and court enters light
210 ray of face.Reflective display panel 400 includes display surface 401.Interior light-emitting surface of the display surface 401 towards light guide plate 200
220.Turn light rays film 300 is located at by interior light-emitting surface 220.Specifically, turn light rays film 300 is located at reflective display panel
Between 400 display surface 401 and the interior light-emitting surface 220 of light guide plate 200.Turn light rays film 300 comes from light guide plate 200 to deflect
Light direction of travel, and make this light along more vertical direction towards display surface 401 advance.
Furthermore, it is understood that seeing Fig. 4, this figure is painted the index path of the reflective display of Fig. 3.As shown in figure 4, interior
Light-emitting surface 220 has normal N 1.Light L from light guide plate 200 can enter in turn light rays film 300, and turn light rays film 300
It is projected outside turn light rays film 300 after the direction of travel of this light L being deflected, wherein turn forward light L and interior light-emitting surface
220 normal N 1 folds a sharp angle θ 1, and the normal N 1 of the light L after steering and interior light-emitting surface 220 folds a sharp angle θ 2.It is sharp
Angle theta 2 is less than sharp angle θ 1.In other words, compared to forward light L is turned, the light L after steering is to go out light in being bordering on more partially
The normal N 1 in face 220, in this way, which turn light rays film 300 can make light L leave front optical module along more vertical direction.
In some embodiments, display surface 401 has normal N 2, the normal N 2 of light L and display surface 401 after steering
Sharp angle, be less than the sharp angle for turning the normal N 2 of forward light L and display surface 401.In other words, before compared to steering
Light L, the light L after steering is the normal N 2 for being bordering on display surface 401 more partially, in this way, which turn light rays film 300 can make light
Line L enters reflective display panel 400 along more vertical direction.In some embodiments, display surface 401 can substantially be put down
Row is in interior light-emitting surface 220, in other words, normal N 1 with normal N 2 be it is parallel, therefore, turn forward light L and display surface 401
The sharp angle of normal N 2 be also θ 1, and the sharp angle of the normal N 2 of light L and display surface 401 after turning to also is θ 2.In portion
Divide in embodiment, display surface 401 can also be not parallel with interior light-emitting surface 220.
In some embodiments, as shown in figure 4, turn light rays film 300 turns to light L in the way of reflection
's.Specifically, turn light rays film 300 includes light transmission membrane body 310 and multiple turn light rays micro-structures 320.Turn light rays are micro-
Structure 320 is set on light transmission membrane body 310.Turn light rays micro-structure 320 is than light transmission membrane body 310 closer to light guide plate 200.Light
It turns to micro-structure 320 and reflective display panel 400 is located at the opposite side of light transmission membrane body 310.In other words, turn light rays
Micro-structure 320 is adjacent to light guide plate 200.At least one turn light rays micro-structure 320 includes first surface 321.This first surface 321
Vertical range d1 to display surface 401 is reduced along the direction far from light source 100 (seeing Fig. 3).Specifically, first
Surface 321 can be clinoplain, be inclined (that is, in figure towards display surface 401 along the direction far from light source 100
It is turned right inclined downward by upper left side).
In this way, when light L enters turn light rays micro-structure 320 and arrives at first surface 321, first surface 321
Light L can be reflected towards display surface 401, and compared to the light L before reflection, the light L after reflection can be bordering on display surface more partially
401 normal N 2 enters in reflective display panel 400 to be conducive to light L along more vertical direction.In part embodiment party
In formula, there can be the first surface 321 of one or more turn light rays micro-structures 320 to meet vertical range d1 along far from light source
The condition of 100 direction reduction, in some embodiments, can also all turn light rays micro-structures 320 first surface 321 it is equal
Meet the condition of direction reduction of the vertical range d1 along separate light source 100, it can be by turn light rays with the most of light L of benefit
Film 300 turns to, and enters in reflective display panel 400 along more vertical direction.
In some embodiments, light transmission membrane body 310 includes back to the back side of turn light rays micro-structure 320 311, the first table
The vertical range at face 321 to the back side 311 is also to reduce along the direction far from light source 100, with sharp light L along more vertical
Turn light rays film 300 is left from light transmission membrane body 310 in direction.In some embodiments, the back side 311 of light transmission membrane body 310 can be real
The display surface 401 of reflective display panel 400 is parallel in matter.In some embodiments, the back side 311 of light transmission membrane body 310
Display surface 401 with reflective display panel 400 can also be not parallel.
In some embodiments, as shown in figure 4, reflective display also includes light transmission adhesion coating 510.Light transmission adhesion
Layer 510 is adhered between turn light rays micro-structure 320 and light guide plate 200.In this way, which light transmission adhesion coating 510 can fix leaded light
Plate 200 and turn light rays film 300.In some embodiments, the refractive index of the material of light transmission adhesion coating 510 is less than turn light rays
The refractive index of the material of micro-structure 320 is totally reflected to help light L in first surface 321.Furthermore, it is understood that working as light L
When arriving at the incidence angle of first surface 321 greater than critical angle, it may occur that total reflection, and change direction and go out along in being bordering on more partially
Advance in the direction of the normal N 2 of the normal N 1 and/or display surface 401 of smooth surface 220.
In some embodiments, as shown in figure 4, first surface 321 and display surface 401 define sharp angle α, this sharp angle
α is between 30 degree to 50 degree.Sharp angle α within this range preferably allows the light L after reflection along being bordering on display surface more partially
Advance in the direction of 401 normal N 2.It will be understood that a parameter described in this specification not only represents the parameter between A to B
It may be greater than A and be less than the arbitrary value of B, also representing the parameter can be equal to A or be equal to B.Separately it will be understood that in Fig. 4, sharp angle
α is depicted in turn light rays film 300 and is parallel between a plane of display surface 401 and first surface 321, to help reader to manage
Solution.
In some embodiments, when the interior light-emitting surface 220 of light guide plate 200 is substantially parallel to display surface 401, the
One surface 321 can also define sharp angle α with interior light-emitting surface 220, this sharp angle α is between 30 degree to 50 degree.Within this range sharp
Angle α preferably allows the light L after reflection to advance along the direction for the normal N 1 for being bordering on interior light-emitting surface 220 more partially.
In some embodiments, the material of light transmission adhesion coating 510 can be optical cement (Optically Clear
Adhesive；) or optical resin (Optically Clear Resin OCA；OCR)；The material of turn light rays micro-structure 320 can
For polyethylene terephthalate (PET), polycarbonate (PC) or polyacids methyl esters (PMMA), but the present invention is not limited thereto.
Above-mentioned material can be conducive to the refraction for the material for making the refractive index of the material of light transmission adhesion coating 510 be less than turn light rays micro-structure 320
Rate is totally reflected to help light L in first surface 321.
In some embodiments, the material of turn light rays micro-structure 320 is identical as the material of light transmission membrane body 310 or phase
Closely, it can so prevent light from unnecessary refraction occurs when by the boundary of light transmission membrane body 310 and turn light rays micro-structure 320
And/or reflection.In some embodiments, as shown in figure 4, turn light rays micro-structure 320 also includes second surface 322.Second
Surface 322 is adjacent to first surface 321.Second surface 322 is than first surface 321 closer to light source 100 (seeing Fig. 3).The
The vertical range d2 of two surfaces 322 to display surface 401 is increased along the direction far from light source 100.In other words, the second table
Face 322 is inclined (that is, being inclined by lower left towards upper right side in figure backwards to display surface 401 along the direction far from light source 100
Tiltedly).When such design be may help to so that light L is entered in turn light rays micro-structure 320, reduces the deviation of light angle and support
Up to first surface 321.In some embodiments, the vertical range at second surface 322 to the back side 311 is also along far from light source
100 direction is increased, is tilted by lower left towards upper right side in figure with sharp second surface 322.
In some embodiments, second surface 322 and display surface 401 define sharp angle β, and sharp angle β is greater than or equal to
70 degree.Sharp angle β within this range preferably reduces the deviation that angle occurs in second surface 322 for light L.It is real in part
It applies in mode, second surface 322 is substantially perpendicular to display surface 401, so that the section of turn light rays micro-structure 320 is rectangular
Triangle, and its upstanding edge than bevel edge closer to light source 100 (seeing Fig. 3).In other words, when second surface 322 is substantial
When perpendicular to display surface 401, the thickness of turn light rays micro-structure 320 is reduced along the direction far from light source 100, can benefit
It is totally reflected in light L in first surface 321.
In some embodiments, as shown in figure 4, when the interior light-emitting surface 220 of light guide plate 200 is substantially parallel to display surface
When 401, second surface 322 can also define sharp angle β with interior light-emitting surface 220, and sharp angle β is greater than or equal to 70 degree, to reduce light
The deviation of angle occurs in second surface 322 for line L.In some embodiments, second surface 322 can also be substantially perpendicular to interior
Light-emitting surface 220 so that the rectangular triangle of the section of turn light rays micro-structure 320, and its upstanding edge than bevel edge closer to light source
100 (seeing Fig. 3).
In some embodiments, as shown in figure 3, turn light rays micro-structure 320 is continuously adjacent.Further come
It says, the first surface 321 of the turn light rays micro-structure 320 of closer light source 100 is adjacent to the turn light rays further away from light source 100
The second surface 322 of micro-structure 320, and interval is had no between the two.In this way, may make the big portion from light guide plate 200
After light splitter can enter turn light rays micro-structure 320, then is reflected by first surface 321 and enters reflective display panel 400,
And it is conducive to reflective display panel 400 and receives more vertical light.
Fig. 5 is painted luminous intensity received by the display surface 401 of the reflective display of Fig. 3 illustrated embodiment and its
The relational graph of incidence angle angle.In Fig. 5, horizontal axis represents the incidence angle angle of light received by display surface 401, and the longitudinal axis represents
Enter the luminous intensity of the light of display surface 401 by the incidence angle.As can be seen from Figure 5, most light is by about 28 degree of incidence
Angle enters display surface 401.That is, only about 28 degree of sharp angle of the incident light of display surface 401 and normal N 2, thus may be used
Know, turn light rays film 300 can effectively help light to enter through display surface 401 along more vertical direction.
In some embodiments, as shown in figure 3, light transmission adhesion coating 510 is not only to be adhered to turn light rays micro-structure 320
First surface 321 and light guide plate 200 interior light-emitting surface 220 between, can also be adhered to the second table of turn light rays micro-structure 320
Between face 322 and the interior light-emitting surface 220 of light guide plate 200.Turn in this way, which light transmission adhesion coating 510 can more securely fix light
To film 300 and light guide plate 200.In some embodiments, the material of light transmission adhesion coating 510 can be optical cement (OCA) or optics
Resin (OCR), but the present invention is not limited thereto.
In some embodiments, as shown in figure 3, reflective display also may include light transmission adhesion coating 520.Light transmission is viscous
Layer 520 be adhered between turn light rays film 300 and the display surface 401 of reflective display panel 400, to fix turn light rays film
300 with reflective display panel 400.In some embodiments, the material of light transmission adhesion coating 520 can for optical cement (OCA) or
Optical resin (OCR), but the present invention is not limited thereto.
In some embodiments, as shown in figure 3, outer light-emitting surface 230 and interior light-emitting surface 220 are located at light guide plate 200
Opposite side, and outer light-emitting surface 230 appears.Furthermore, it is understood that outer light-emitting surface 230 is light-permeable, and it is not reflected material
What material or light-proof material were covered.In this way, which the light of the reflection can when 400 reflection light of reflective display panel
Sequentially by light transmission adhesion coating 520, turn light rays film 300 and light transmission adhesion coating 510, then enters by interior light-emitting surface 220 and lead
In tabula rasa 200, then reflective display left by outer light-emitting surface 230, to allow user to watch reflective display panel 400
Display picture.
In some embodiments, reflective display panel 400 can be electrophoretic display device (EPD) (Electro Phoretic
Display；EPD), liquid crystal display (Liquid Crystal Display；) or electric moistening display (Electro LCD
wetting Display；EWD), but not limited to this.By taking electrophoretic display device (EPD) as an example, reflective display panel 400 may include more
A microcapsules.Each microcapsules has multiple light charged particles and dark charged particle in wherein.Light charged particle with
The charge of dark charged particle institute band is different.For example, light charged particle can be positively charged, and dark charged particle can be with negative
Electricity.In this way, can by the position of light charged particle and dark charged particle in each microcapsules of electric field controls, and
Grey scale pattern is presented.In other words, reflective display panel 400 can be grayscale display panel.
In some embodiments, as shown in figure 3, light guide plate 200 is also comprising multiple light micro-structures 240 out.These go out light
Micro-structure 240 is set on interior light-emitting surface 220, to destroy the total reflection of light, and is conducive to light and is left interior light-emitting surface 220, and
Reflective display panel 400 is advanced to by turn light rays film 300.In other words, reflective show can be improved in light micro-structure 240 out
Show the light income of panel 400.In some embodiments, turn light rays micro-structure 320 goes out light micro-structure adjacent to light guide plate 200
240。
In some embodiments, as shown in figure 3, the light micro-structure 240 that goes out further away from light source 100 arranges more intensive,
Therefore, easier to leave interior light-emitting surface 220 when light advances to the rear area of light guide plate 200, therefore even if much light
Interior light-emitting surface 220 is left in the front region of light guide plate 200, and causes the luminous flux of 200 rear area of light guide plate lower, but by
It is easier to leave interior light-emitting surface 220 in the light of rear area, therefore the front region and rear area of reflective display panel 400
Light income difference be not excessive, therefore, the light incomes of 400 different zones of reflective display panel can more uniformly.
In some embodiments, as shown in figure 3, that amount of light can have been played is uniform for the density arrangement of light micro-structure 240 out
The effect of change, therefore turn light rays micro-structure 320 need not extraly density arranges again.Therefore, in some embodiments, light turns
It can be evenly distributed to micro-structure 320.In other words, the spacing of any two adjacent turn light rays micro-structures 320 can be equal.
For it is preferred that, the spacing of any two adjacent turn light rays micro-structures 320 is zero, that is, turn light rays micro-structure 320 is continuous
Adjacent.Since turn light rays micro-structure 320 is evenly distributed, therefore when combining turn light rays film 300 and light guide plate 200,
Without special consideration should be given to the alignment issues of the two, and it may help to the assembling of reflective display.
In some embodiments, light micro-structure 240 can be protruded from interior light-emitting surface 220 out.For example, the micro- knot of light out
Structure 240 can be the hemispherical configuration protruded from interior light-emitting surface 220.In some embodiments, light micro-structure 240 can also be recessed out
Set on interior light-emitting surface 220.For example, light micro-structure 240 can be the recessed hemispherical groove in interior light-emitting surface 220 out.Ying Liao
It solving, the shape of above-mentioned light micro-structure 240 out is only illustrative, rather than to limit the present invention.
Fig. 6 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention.As shown in fig. 6,
Main difference between present embodiment and Fig. 3 illustrated embodiment is to be: reflective display panel 400a is colored display
Panel, and non-gray scale display panel.Furthermore, it is understood that reflective display panel 400a includes colored filter in wherein.Specifically
For, reflective display panel 400a may include reflective display module 410, filter coating 420 and optical filtering ilm substrate 430.It filters
Film 420 and optical filtering ilm substrate 430 can collectively form colored filter.Filter coating 420 include multiple filtered regions 421,422 with
423.The passable optical band of filtered region 421,422 and 423 is different.For example, the passable light of filtered region 421
Wave band can be red light wavelength, and the passable optical band of filtered region 422 can be green wavelength, and filtered region 423 passes through
Optical band be blue light wavelength.In this way, filtered region 421,422 and 423 can respectively to filter out the light of different wave length,
To be conducive to that chromatic image is presented.
In some embodiments, as shown in fig. 6, the orientation of filtered region 421,422 and 423 substantially parallel to
Display surface 401.Furthermore, filtered region 421,422 and 423 is arranged along the direction far from light source 100.Although
The incident light that such arrangement mode is likely to result in reflective display panel 400a passes through different filtered region (examples from reflected light
Such as: incident light is by filtered region 421, and reflected light passes through filtered region 422), however, since turn light rays film 300 can allow
Light enters reflective display panel 400a along more vertical direction, therefore can effectively reduce entering for reflective display panel 400a
The incidence angle angle of light and the angle of reflection angle of reflected light are penetrated, so that being conducive to incident light and reflected light passes through identical filtered region
(such as: incident light and reflected light pass through filtered region 421).In this way, which turn light rays film 300 can effectively reduce color
Deviation, the color needed for being presented in favor of reflective display panel 400a.
In some embodiments, filter coating 420 is between reflective display module 410 and optical filtering ilm substrate 430.It is aobvious
Show the upper surface that face 401 is reflective display module 410 and is adhered to filter coating 420.For example, reflective display module
There can be optical adhesive layer between 410 and filter coating 420, the two is adhered together.It is reflective aobvious in some embodiments
Show that module 410 can be electrophoresis display module, but the present invention is not limited thereto.Light from front optical module can adhere from light transmission
Layer 520 sequentially arrives at the microcapsules in reflective display module 410 by optical filtering ilm substrate 430 and filter coating 420, works as light
When being reflected by the light charged particle in microcapsules, this reflected light can sequentially by filter coating 420 and optical filtering ilm substrate 430 from
Open reflective display panel 400a.
Fig. 7 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention.As shown in fig. 7,
Main difference between present embodiment and Fig. 3 illustrated embodiment is to be: the micro- knot of turn light rays of turn light rays film 300a
The shape of structure 320a is different from the shape of aforementioned turn light rays micro-structure 320.Specifically, the of turn light rays micro-structure 320a
One surface 321a is the cambered surface of outer gibbosity.The vertical range of this outer gibbosity cambered surface to display surface 401 is also along far from light source 100
Direction reduce, reflective display panel 400 can be reflexed in a manner of being totally reflected by this outer gibbosity cambered surface to help light.
Fig. 8 is painted the diagrammatic cross-section of the reflective display of another embodiment according to the present invention.As shown in figure 8,
Main difference between present embodiment and Fig. 3 illustrated embodiment is to be: the micro- knot of turn light rays of turn light rays film 300b
The shape of structure 320b is different from the shape of aforementioned turn light rays micro-structure 320.Specifically, the of turn light rays micro-structure 320b
One surface 321b is the cambered surface of inner concavity.In one embodiment, the vertical range of this inner concavity cambered surface to display surface 401 can be along
Direction far from light source 100 is reduced, and can be reflexed in a manner of being totally reflected by this inner concavity cambered surface to help light reflective aobvious
Show panel 400.
Although above embodiment discloses three kinds of first surface 321,321a and 321b of different shapes, above-mentioned three
Kind shape is only example, is not intended to limit the present invention, as long as light can be allowed to reflex to reflective display panel in a manner of being totally reflected,
First surface can also be other shapes, such as zigzag or wavy or two kinds or more shapes combination, but the present invention is not
As limit.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, any this field skill
Art personnel, without departing from the spirit and scope of the present invention, when various variations and retouching, therefore protection scope of the present invention can be made
Subject to view as defined in claim.
Claims (18)
1. a kind of front optical module, which is characterized in that the front optical module includes:
Light guide plate, it includes incidence surface, interior light-emitting surface and outer light-emitting surface, the incidence surface be adjacent to the interior light-emitting surface with it is described
Between outer light-emitting surface；
Light source, to irradiate the incidence surface of the light guide plate；And
Turn light rays film is located at by the interior light-emitting surface, and the direction of travel to deflect the light from the light guide plate,
The sharp angle of the light and the normal of the interior light-emitting surface after wherein turning to be less than turn forward light with it is described interior
The sharp angle of the normal of light-emitting surface；
Wherein, the turn light rays film includes light transmission membrane body and the micro- knot of multiple turn light rays being set on the light transmission membrane body
Structure, the multiple turn light rays micro-structure is than the light transmission membrane body closer to the light guide plate, at least one described turn light rays
Micro-structure includes adjacent first surface and second surface, and the first surface is than the second surface further from the light
Source, the first surface and the interior light-emitting surface define the first sharp angle, the second surface and the interior light-emitting surface definition the
Two sharp angles, wherein second sharp angle is greater than first sharp angle.
2. front optical module as described in claim 1, which is characterized in that the light transmission membrane body includes micro- back to the turn light rays
The back side of structure, the vertical range at the first surface to the back side are reduced along the direction far from the light source.
3. front optical module as claimed in claim 2, which is characterized in that first sharp angle is between 30 degree to 50 degree.
4. front optical module as claimed in claim 2, which is characterized in that the vertical range at the second surface to the back side is
It is increased along the direction far from the light source.
5. front optical module as claimed in claim 4, which is characterized in that second sharp angle is more than or equal to 70 degree.
6. front optical module as claimed in claim 2, which is characterized in that the front optical module also includes light transmission adhesion coating, until
It is adhered between the first surface of the turn light rays micro-structure and the interior light-emitting surface of the light guide plate less.
7. front optical module as claimed in claim 6, which is characterized in that the refractive index of the material of the light transmission adhesion coating is less than institute
State the refractive index of the material of turn light rays micro-structure.
8. front optical module as described in claim 1, which is characterized in that the light guide plate includes multiple light micro-structures out, is set
It is placed on the interior light-emitting surface.
9. front optical module as claimed in claim 8, which is characterized in that further away from described in the light source go out light microstructured ar-rangement
It obtains more intensive.
10. front optical module as claimed in claim 9, which is characterized in that the turn light rays micro-structure is adjacent to the light guide plate
It is described go out light micro-structure, the turn light rays micro-structure is evenly distributed.
11. a kind of reflective display, which is characterized in that the reflective display includes:
Light guide plate, it includes incidence surface and interior light-emitting surface, the incidence surface is to be adjacent to the interior light-emitting surface；
Light source, to irradiate the incidence surface of the light guide plate；
Reflective display panel, it includes display surfaces, towards the interior light-emitting surface of the light guide plate；And
Turn light rays film is located at the display surface of the reflective display panel and the interior light-emitting surface of the light guide plate
Between, the turn light rays film is the direction of travel to deflect the light from the light guide plate and makes the light towards described
Display surface is advanced, wherein the sharp angle of the normal of the light and the display surface after turning to, which is less than, turns the forward light
With the sharp angle of the normal of the display surface；
Wherein, the turn light rays film includes light transmission membrane body and the micro- knot of multiple turn light rays being set on the light transmission membrane body
Structure, the multiple turn light rays micro-structure is than the light transmission membrane body closer to the light guide plate, at least one described turn light rays
Micro-structure includes adjacent first surface and second surface, and the first surface is than the second surface further from the light
Source, the first surface and the interior light-emitting surface define the first sharp angle, the second surface and the interior light-emitting surface definition the
Two sharp angles, wherein second sharp angle is greater than first sharp angle.
12. reflective display as claimed in claim 11, which is characterized in that the first surface to the display surface
Vertical range is reduced along the direction far from the light source.
13. reflective display as claimed in claim 12, which is characterized in that first sharp angle be between 30 degree extremely
50 degree.
14. reflective display as claimed in claim 12, which is characterized in that the second surface to the display surface
Vertical range is increased along the direction far from the light source.
15. reflective display as claimed in claim 14, which is characterized in that second sharp angle is more than or equal to 70
Degree.
16. reflective display as claimed in claim 11, which is characterized in that the reflective display panel includes colour
For optical filter in wherein, the colored filter includes multiple filtered regions, the filtered region can by optical band not
Together.
17. reflective display as claimed in claim 11, which is characterized in that the reflective display also includes
Light adhesion coating is adhered between the turn light rays film and the display surface of the reflective display panel.
18. reflective display as claimed in claim 12, which is characterized in that described the of the turn light rays micro-structure
The shape on one surface is plane, convex cambered surface, concavity cambered surface, zigzag, wavy or combinations thereof.
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| CN201510657254.5A CN106569368B (en) | 2015-10-13 | 2015-10-13 | Reflective display and its front optical module |
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| CN201510657254.5A CN106569368B (en) | 2015-10-13 | 2015-10-13 | Reflective display and its front optical module |
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| CN109031512B (en) * | 2018-09-04 | 2021-08-27 | 京东方科技集团股份有限公司 | Light guide film assembly, front light source and reflective display device |
| CN109116657A (en) * | 2018-10-25 | 2019-01-01 | 成都捷翼电子科技有限公司 | A kind of color electric paper display module and preparation method thereof |
| CN109901259B (en) * | 2019-04-07 | 2021-03-05 | 深圳市美誉镜界光电科技有限公司 | Optical waveguide structure, AR equipment optical imaging system and AR equipment |
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| CN106569368A (en) | 2017-04-19 |
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