CN108919561A - Display device - Google Patents
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- CN108919561A CN108919561A CN201810756830.5A CN201810756830A CN108919561A CN 108919561 A CN108919561 A CN 108919561A CN 201810756830 A CN201810756830 A CN 201810756830A CN 108919561 A CN108919561 A CN 108919561A
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Classifications
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
本发明实施例提供一种显示装置。显示装置包括第一基板、第二基板、光导结构、第一发光模块、元件阵列以及液晶切换层。第一基板具有面对第二基板的内表面。光导结构设置于第一基板的内表面上。第一发光模块设置于第一基板的内表面上，且邻接于光导结构的一侧。元件阵列设置于第二基板。液晶切换层设置于光导结构与第二基板之间。
An embodiment of the present invention provides a display device. The display device includes a first substrate, a second substrate, a light guide structure, a first light emitting module, an element array and a liquid crystal switching layer. The first substrate has an inner surface facing the second substrate. The light guide structure is disposed on the inner surface of the first substrate. The first light-emitting module is disposed on the inner surface of the first substrate and adjacent to one side of the light guide structure. The element array is disposed on the second substrate. The liquid crystal switching layer is disposed between the light guide structure and the second substrate.
Description
Technical field
The present invention relates to a kind of display devices, and in particular to a kind of light source is set to the display dress of active array side
It sets.
Background technique
Flat-panel screens has many advantages, such as electronics production that is small in size, light-weight, therefore being widely applied to modern
In product.Flat-panel screens includes various types, wherein the most universal with liquid crystal display.In general, liquid crystal display includes
Backlight module, a pair of of polaroid positioned at backlight module side and the Liquid Crystal Module between this pair of of polaroid.It is above-mentioned
A pair of of polaroid can be used to the polarization state to filter.However, polaroid can reduce the penetrance of light, therefore liquid crystal display can be reduced
Whole optical efficiency.In addition to this, backlight module accounts for the significant percentage of thickness of liquid crystal display, therefore for lowering liquid crystal
Show that the thickness of device causes to hinder.
Summary of the invention
The display device of the embodiment of the present invention includes first substrate, the second substrate, guide structure, the first light emitting module, member
Part array and liquid crystal switchable layer.First substrate has the inner surface in face of the second substrate.Guide structure is set to first substrate
Inner surface on.First light emitting module is set on the inner surface of first substrate, and is adjacent to the side of guide structure.Element battle array
Column are set to the second substrate.Liquid crystal switchable layer is set between guide structure and the second substrate.
In some embodiments, display device may also include gap filling material and the first smooth recovery layer.Gap filling
Material coats the first light emitting module, and is adjacent to the side of guide structure.First smooth recovery layer is set to gap filling material
Periphery.
In some embodiments, display device may also include the second smooth recovery layer.Second smooth recovery layer is set to light guide knot
The other side of structure.
In some embodiments, display device may also include the second light emitting module.Second light emitting module is set to the first base
On the inner surface of plate.First light emitting module and the second light emitting module are located at the opposite sides of guide structure, and the first light emitting module
Dominant wavelength ranges be substantially equal to the dominant wavelength ranges of the second light emitting module.
In some embodiments, display device may also include spacer structure.Spacer structure is set to first substrate and second
Between substrate, and it is located in liquid crystal switchable layer.Spacer structure includes reflecting material.
In some embodiments, guide structure may include a plurality of light channel structure.First light emitting module may include multiple hairs
Optical element.Multiple light channel structures are arranged and are extended in a first direction in a second direction, and between two adjacent light channel structures
With gap.
In some embodiments, each light-emitting component can position it is corresponding and be adjacent to each light channel structure.
In some embodiments, each light-emitting component can position it is corresponding and be adjacent at least two light channel structures.
In some embodiments, the first light emitting module may include a plurality of light-emitting elements, and a plurality of light-emitting elements can position pair
It answers and is adjacent to light channel structure.
The display device of the embodiment of the present invention includes first substrate, the second substrate, guide structure, light emitting module, element battle array
Column and liquid crystal switchable layer.First substrate have the first inner surface, the second substrate have the second inner surface, and the first inner surface with
Second inner surface is facing with each other.Guide structure is set on the first inner surface, and including a plurality of light channel structure.Each light is logical
Road structure has first end face and second end face relative to each other.The refractive index of the material of guide structure is 1.4 to 1.7.It shines
Module is set on the first inner surface, and light emitting module position corresponds to multiple first end faces of multiple light channel structures.Element
Array is set to the second substrate.Liquid crystal switchable layer is located in the first inner surface of first substrate and the second inner surface of the second substrate
Between.
In some embodiments, the visible light transmittance of the material of guide structure can be 20% to 99%.
In some embodiments, light emitting module may include a plurality of light-emitting elements.Each light channel structure position corresponds to every
At least the two position in one light-emitting component or multiple light channel structures corresponds to each light-emitting component.
In some embodiments, display device may also include reflecting layer and insulating protective layer.Reflecting layer is set in first
Surface, and between first substrate and guide structure.Insulating protective layer is set between reflecting layer and guide structure.
In some embodiments, the thickness of each light channel structure and width may respectively be 10 μm to 500 μm and 1 μm extremely
200μm.There can be spacing between two neighboring light channel structure, and this spacing can be 1 μm to 100 μm.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate specification attached
Figure is described in detail below.
Detailed description of the invention
Figure 1A be according to some embodiments of the invention display device in off position under along first direction section view illustrate
Figure.
Figure 1B is illustrated in the on state along the section view of first direction according to the display device of some embodiments of the invention
Figure.
Fig. 1 C be according to some embodiments of the invention include first substrate, guide structure structure cuing open in a second direction
Depending on schematic diagram.
Fig. 2 to Fig. 7 be according to the first substrate of some embodiments of the invention, guide structure and the first light emitting module (or
First light emitting module and the second light emitting module) top view.
Description of symbols：
10：Display device
100：First substrate
102：The second substrate
110,710：Guide structure
112,712a,712b：Light channel structure
114：Reflecting layer
116：Insulating protective layer
120,320,520,620,720：First light emitting module
420：Second light emitting module
122a、122b、122c、322a、322b、322c、422a、422b、422c、522a、522b、522c、622a、
622b,622c,722a,722b,722c：Light-emitting component
124：Gap filling material
126：First smooth recovery layer
128：Second smooth recovery layer
130：Element arrays
140：Liquid crystal switchable layer
142a,142b：Liquid crystal alignment layer
144：Transparent electrode
BK：Spacer structure
D1：First direction
D2：Second direction
DV：Offset
G：Gap
L：Length
LC：Liquid crystal molecule
Ne：Long axis refractive index
No：Short axle refractive index
P：Connection pad
S1：First inner surface
S2：Second inner surface
SL：Frame glue
T：Thickness
TS1：First end face
TS2：Second end face
W,W1：Width
Specific embodiment
Figure 1A be according to some embodiments of the invention display device 10 in off position under along first direction D1 section view
Schematic diagram.Figure 1B is that the section view according to the display device 10 of some embodiments of the invention in the on state along first direction D1 is shown
It is intended to.Fig. 1 C be according to some embodiments of the invention include the structure of first substrate 100 and guide structure 110 in a second direction
The schematic cross-sectional view of D2.Fig. 2 is shone according to the first substrate 100 of some embodiments of the invention, guide structure 110 and first
The top view of module 120.
Figure 1A and Figure 1B are please referred to, display device 10 includes first substrate 100 and the second substrate 102.In some embodiments
In, the material of first substrate 100 and the second substrate 102 may include glass, quartz, organic polymer, opaque/reflecting material
(such as：Conductive material, metal, wafer, ceramics etc.) or other applicable materials.First substrate 100 and the second substrate 102 are each other
It is oppositely arranged.In detail, first substrate 100 has the first inner surface S1, and the second substrate 102 also has the second inner surface S2, and
First inner surface S1 faces the second inner surface S2.In some embodiments, the area of first substrate 100 can be greater than the second substrate
102 area.In other words, the second substrate 102 can't completely cover first substrate 100, but expose first substrate 100
A part.However, in other embodiments, the area of first substrate 100 also can be equal to or less than the second substrate 102 face
Product, the present invention is not limited thereto.
Figure 1A to Fig. 1 C and Fig. 2 are please referred to, display device 10 further includes guide structure 110, and guide structure 110 is set to
On first inner surface S1 of first substrate 100.In other words, guide structure 110 be located at first substrate 100 and the second substrate 102 it
Between.In some embodiments, the refractive index of the material of guide structure 110 can be 1.4 to 1.7.In further embodiments, light guide
The refractive index of the material of structure 110 can be 1 to 2.In addition, the visible light transmittance of guide structure 110 can be 20% to 99%.It lifts
For example, the material of guide structure 110 may include transparent photomask glue, glass, acrylic and any plastic type plastic material, packet
Containing polyethylene (polystyrene, PE), polycarbonate (polycarbonate, PC), acrylic resin
(polymethylacrylate, PMMA).In this present embodiment, guide structure 110 includes a plurality of 112 (such as Fig. 2 of light channel structure
It is shown).Specifically, each light channel structure 112 can be strip, and D1 extends along a first direction.In other words, optical channel
Structure 112 has the long axis for being parallel to first direction D1.In addition, light channel structure 112 can have first end face relative to each other
TS1 and second end face TS2.In some embodiments, the length L of light channel structure 112 in the first direction dl can be for 10 μm extremely
500 μm, and the width W of light channel structure 112 in a second direction d 2 can be 1 μm to 200 μm.Second direction D2 and first direction
D1 is interlaced with each other or intersection, that is, first direction D1 with second direction D2 is non-is parallel to each other.In some embodiments, second direction
D2 is substantially perpendicular to first direction D1.In addition, the thickness T of light channel structure 112 can be 10 μm to 500 μm.In the implementation of Fig. 2
In example, a plurality of light channel structure 112 is arranged along second direction D2, and is had between one between two adjacent light channel structures 112
Gap G (please refers to Fig. 1 C).For example, the width W1 of clearance G can be 1 μm to 100 μm.
Figure 1A to Fig. 1 C is please referred to, in some embodiments, display device 10 may also include reflecting layer 114 and insulation protection
Layer 116, wherein reflecting layer 114 and insulating protective layer 116 are respectively arranged between guide structure 110 and first substrate 100, and exhausted
Edge protective layer 116 is set between reflecting layer 114 and guide structure 110.In some embodiments, guide structure 110 is not complete
All standing reflecting layer 114 and insulating protective layer 116.In other words, guide structure 110 expose a part reflecting layer 114 and absolutely
Edge protective layer 116.In some embodiments, reflecting layer 114 and insulating protective layer 116 can comprehensively lining in first substrate 100
The first inner surface S1 on.For example, the material in reflecting layer 114 may include aluminium, silver, titanium, gold or combinations thereof.Insulating protective layer
116 material may include silica, silicon nitride or combinations thereof.
Figure 1A, Figure 1B and Fig. 2 are please referred to, display device 10 further includes the first light emitting module 120.First light emitting module
120 are set on the first inner surface S1 of first substrate 100.In some embodiments, the first light emitting module 120 can be via connection pad
P and then on the first inner surface S1 of first substrate 100.For example, chip bonding (flip chip can be passed through
Bonding) or the mode of routing engagement (wire bonding) by the first light emitting module 120 then on connection pad P.In some realities
It applies in example, connection pad p-shaped is on reflecting layer 114 and insulating protective layer 116.In this way, which insulating protective layer 116 can be located at reflection
Between 114 and connection pad P of layer.In addition, the first light emitting module 120 is adjacent to the side of guide structure 110.For example, such as Fig. 2 institute
Show, the position of the first light emitting module 120 can correspond to the first end face TS1 of light channel structure 112.In other words, the first luminous mould
Block 120 can be relatively far from the second end face of light channel structure 112 adjacent to the first end face TS1 of light channel structure 112
TS2.In these embodiments, the light that the first light emitting module 120 is issued can enter light channel structure via first end face TS1
112.In some embodiments, reflecting layer 114 can reflect the light advanced from the first light emitting module 120 toward first substrate 100, with
It is set to enter light channel structure 112 indirectly.In other words, it may insure the light of the first light emitting module 120 by reflecting layer 114
It will not enter in first substrate 100, and lead to leakage problem.In some embodiments, insulating protective layer 116 is covered in reflecting layer
114, avoid reflecting layer 114 from having signal short circuit problem.
In some embodiments, the first light emitting module 120 may include a plurality of light-emitting elements, and display device 10 may include more
A first light emitting module 120 (as shown in Figure 2).For example, each light emitting module 120 may include light-emitting component 122a, shine
Element 122b and light-emitting component 122c, and light-emitting component 122a, light-emitting component 122b and light-emitting component 122c distinguish position
It corresponds to and is adjacent to multiple light channel structures 112.In other words, light-emitting component 122a, light-emitting component 122b and light-emitting component
The position 122c is corresponding and is adjacent to different light channel structures 112.In some embodiments, each light-emitting component has single master
Wave-length coverage.In these embodiments, each light-emitting component may include one or more luminous two with identical dominant wavelength ranges
Pole pipe.Light emitting diode can be inorganic light-emitting diode or Organic Light Emitting Diode, and light emitting diode size (that is, it is long,
It is wide or high) it can be 1 μm to 10000 μm.For example, light-emitting component 122a may include one or more red light-emitting diodes, hair
Optical element 122b may include one or more green light LEDs, and light-emitting component 122c may include one or more blue light emittings two
Pole pipe.The dominant wavelength ranges for the light that red light-emitting diode is issued can be 610nm to 670nm.Green light LED is sent out
The dominant wavelength ranges of light out can be 510nm to 560nm.The dominant wavelength ranges for the light that blue light-emitting diode is issued can be
254nm to 470nm.Those skilled in the art can adjust the number of light-emitting component in the first light emitting module 120 according to design requirement
Amount and its dominant wavelength ranges, the present invention is not limited thereto.In some embodiments, light-emitting component 122a, light-emitting component
122b and light-emitting component 122c all can be blue light-emitting diode, and correspond respectively to light-emitting component 122a, light-emitting component
It can be covered with wavelength conversion material at least the two of the light channel structure 112 of 122b and light-emitting component 122c, so that these
Light channel structure 112 can transmit the light of different dominant wavelength ranges.For example, corresponding to the optical channel knot of light-emitting component 122a
Structure 112 can and can be covered with red not covered with wavelength conversion material, corresponding to the light channel structure 112 of light-emitting component 122b
Wavelength conversion material and viridescent wavelength conversion material can be covered corresponding to the light channel structure 112 of light-emitting component 122c.?
In some embodiments, above-mentioned wavelength conversion material may include fluorescent molecule, quantum dot, quantum rod or combinations thereof.
Please refer to Figure 1A and Figure 1B, in some embodiments, display device 10 may also include gap filling material 124 and
First smooth recovery layer 126.First light emitting module 120, gap filling material 124 and the first smooth recovery layer 126 are all adjacent to light guide
The same side of structure 110.In this present embodiment, gap filling material 124 coats the first light emitting module 120.Specifically, first
Light emitting module 120 can be adjacent to the first end face TS1 of light channel structure 112 via gap filling material 124.In other words, one
Partial gap filling material 124 can be between the first light emitting module 120 and light channel structure 112.In some embodiments,
The material of gap filling material 124 may include light-hardening resin or thermosetting resin.It, can by the way that gap filling material 124 is arranged
It avoids the first light emitting module 120 by the influence of aqueous vapor and oxygen in environment, and the reliable of the first light emitting module 120 can be improved
Degree.In this present embodiment, the first smooth recovery layer 126 is set to the periphery of gap filling material 124.Specifically, the first light returns
A part that layer 126 can be coated on the first light emitting module 120 is received, so that the first light emitting module 120 is not right against light guide knot
The surface of structure 110 can be covered by the first smooth recovery layer 126 with reflecting layer 114.In this way, can be effectively by the first light emitting module
120 light issued are guided into guide structure 110.In some embodiments, the first smooth recovery layer 126 can be by first substrate
100 the first inner surface S1 extend to guide structure 110 on the side of the second substrate 102.In further embodiments,
First smooth recovery layer 126 can be extended to by the first inner surface S1 of first substrate 100 guide structure 110 in face of the second substrate
On 102 side, or it can be extended on the side of guide structure 110 by insulating protective layer 116.In some embodiments, first
The material of light recovery layer 126 may include aluminium, silver, titanium, gold or combinations thereof.
In some embodiments, display device 10 may also include the second smooth recovery layer 128, wherein the second smooth recovery layer 128
It is set to the side relative to the first light emitting module 120 of guide structure 110.For example, the first light emitting module 120 can abut
In the first end face TS1 of light channel structure 112, and the second smooth recovery layer 128 can be adjacent to the second end face of light channel structure 112
TS2.In some embodiments, the second smooth recovery layer 128 can be formed on the first inner surface S1 of first substrate 100, and be covered
The second end face TS2 of light channel structure 112.In some embodiments, the material of the second smooth recovery layer 128 may include aluminium, silver,
Titanium, gold or combinations thereof.By the way that the second smooth recovery layer 128 is arranged, can will be entered by light channel structure 112 via second end face TS2
In the light reflected light channel design 112 of environment.
In this present embodiment, display device 10 further includes element arrays 130, and wherein element arrays 130 are set to the second base
Plate 102.In some embodiments, element arrays 130 may be disposed on the second inner surface S2 of the second substrate 102.For example,
Element arrays 130 may include pixel circuit, transparent electrode and signal line (all omit and show).Pixel circuit may include active member
Part and passive element.Active component may include transistor, and passive element may include capacitor.Figure 1A and Figure 1B are only with single layer structure
Element arrays 130 are shown.However, element arrays 130 may actually be multilayered structure.For example, multilayered structure may include that
This insulating layer and conductive pattern for being alternately stacked.In this present embodiment, display device 10 further includes liquid crystal switchable layer 140,
Middle liquid crystal switchable layer 140 is set between guide structure 110 and the second substrate 102.In other words, liquid crystal switchable layer 140 is located in
Between first inner surface S1 of first substrate 100 and the second inner surface S2 of the second substrate 102.Liquid crystal switchable layer 140 includes
Multiple liquid crystal molecules LC, and liquid crystal molecule LC can have birefringence characteristic.In other words, liquid can be controlled by element arrays 130
The direction of rotation of the liquid crystal molecule LC of the different zones of brilliant switchable layer 140, and make liquid crystal switchable layer 140 tool there are two types of or two kinds with
Upper different refractive index.Specifically, liquid crystal molecule LC is birefringent material, i.e., there is a long axis refractive index on long axis direction
Ne has a short axle refractive index No on short-axis direction.By the different direction of rotation liquid crystal molecule LC, come regulate and control light be by
Different refractivity (such as long axis refractive index Ne or short axle refractive index No) forms dark-state and illuminated state.As shown in Figure 1A, liquid crystal molecule
The long axis (or being optical axis) of LC is substantially parallel to the first inner surface S1 (as shown in Figure 1A) of first substrate 100, and short axle is then
It is substantially perpendicular to the first inner surface S1.When light passes through liquid crystal switchable layer 140, i.e., from the liquid crystal to be entered of guide structure 110
Switchable layer 140 because variant between the refractive index of guide structure 110 and the short axle refractive index No of liquid crystal molecule LC, and is formed complete
Reflection.Such as with this one, most of light does not penetrate liquid crystal switchable layer 140, and forms dark-state.As shown in Figure 1B, liquid crystal point
The long axis (or being optical axis) of sub- LC is substantially perpendicular to the first inner surface S1.When light pass through liquid crystal switchable layer 140 when, i.e., from
The liquid crystal switchable layer 140 to be entered of guide structure 110, because of the refractive index of guide structure 110 and the long axis refractive index of liquid crystal molecule LC
Ne is substantially identical, and light can be coupled into liquid crystal switchable layer 140.In this way, which most of light can penetrate liquid crystal switching
Layer 140, and form illuminated state.In some embodiments, the long axis refractive index Ne of liquid crystal molecule LC is greater than short axle refractive index No.One
In a little embodiments, the difference of long axis refractive index Ne and short axle refractive index No can be greater than 0.1, or be greater than 0.15.For example, liquid crystal
The short axle refractive index No of molecule L C can be 1.25 to 1.69.The long axis refractive index Ne of liquid crystal molecule LC can be 1.4 to 1.7.
In addition, the material of guide structure 110 can be chosen as with the substantially equal to long axis refractive index of liquid crystal molecule LC
Ne.In some embodiments, the difference between the refractive index of guide structure 110 and the long axis refractive index Ne of liquid crystal molecule LC can be small
In 0.1.For example, the material of guide structure 110 can be transparent photomask glue, glass, acrylic and any plastic type plastic cement
Material includes polyethylene (polystyrene, PE), polycarbonate (polycarbonate, PC), acrylic resin
(polymethylacrylate, PMMA), and the material of liquid crystal molecule LC can be eurymeric or negative type liquid crystal.Due to liquid crystal molecule LC
Long axis refractive index Ne be greater than short axle refractive index No, therefore the refractive index of guide structure 110 is also greater than the short axle of liquid crystal molecule LC
Refractive index No.In some embodiments, the difference model of the short axle refractive index No of the refractive index of guide structure 110 and liquid crystal molecule LC
Enclose to be 0.1~0.3.In this way, which the liquid crystal molecule LC in some regions of liquid crystal switchable layer 140 is oriented for such as Figure 1A
Shown, the light from the first light emitting module 120 marches between guide structure 110 and this region of liquid crystal switchable layer 140
Total reflection can be generated when interface, therefore cannot be introduced into liquid crystal switchable layer 140.In other words, in some regions of liquid crystal switchable layer 140
Liquid crystal molecule LC when rotating to be specific direction, dark-state is presented in those regions of display device 10.On the other hand, switch in liquid crystal
Layer 140 some regions in liquid crystal molecule LC it is oriented be it is as shown in Figure 1B, the light from the first light emitting module 120 can be suitable
The second substrate 102 sharply is passed through via this region of guide structure 110 and liquid crystal switchable layer 140, without in guide structure
It is totally reflected between 110 and liquid crystal switchable layer 140.In other words, the liquid crystal molecule in some regions of liquid crystal switchable layer 140
When LC rotates to be another specific direction, illuminated state is presented in those regions of display device 10.
In some embodiments, display device 10 may also include spacer structure BK, and wherein spacer structure BK is set to first
Between substrate 100 and the second substrate 102.In some embodiments, the quantity of spacer structure BK can be majority.Liquid crystal switchable layer
140 can be in the space between multiple spacer structure BK.It follows that some spacer structure BK can be located at liquid crystal switchable layer
In 140.In some embodiments, spacer structure BK may include reflecting material.It in further embodiments, can be in spacer structure BK
Surface formed reflecting layer (not shown).In this way, by liquid crystal switchable layer 140 along substantially parallel to first substrate 100
It can be reflected back in liquid crystal switchable layer 140 by spacer structure BK with the direction of the second substrate 102 toward the light that two sides are advanced.
Figure 1A to Fig. 1 C is please referred to, in some embodiments, display device 10 may also include a pair of of liquid crystal alignment layer, such as
It is the first liquid crystal alignment layer 142a and the second liquid crystal alignment layer 142b, wherein liquid crystal switchable layer 140 is located at the first liquid crystal alignment layer
Between 142a and the second liquid crystal alignment layer 142b.In this present embodiment, the first liquid crystal alignment layer 142a may be disposed at first substrate
On 100 the first inner surface S1, the second liquid crystal alignment layer 142b is then located at the second inner surface S2 of the second substrate 102.Some
In embodiment, the first liquid crystal alignment layer 142a is in a first direction continuous structure on D1 and second direction D2.In other realities
Apply in example, the first liquid crystal alignment layer 142a in a second direction d 2 and discontinuous (not shown), and in adjacent light channel structure
There is gap between 112.Clearance G between this gap and adjacent light channel structure 112 communicates with each other, and can have it is identical or
Different width.For example, the material of the first liquid crystal alignment layer 142a and the second liquid crystal alignment layer 142b can respectively include class
Diamond carbon (diamond-like carboon, DLC), silicon carbide, silica, silicon nitride, aluminium oxide, cerium oxide, tin oxide,
Zinc titanate, polyimides, poly- vinyl cinnamate (poly (vinyl cinnamate), PVCN), polymethacrylates
(polymethyl methacrylate, PMMA) or combinations thereof.
In some embodiments, display device 10 may also include a pair of of transparent electrode, be respectively arranged at the first LCD alignment
The side relative to liquid crystal switchable layer 140 of layer 142a and the second liquid crystal alignment layer 142b.In some embodiments, this is a pair of thoroughly
Transparent electrode 144 in prescribed electrode can be between the first liquid crystal alignment layer 142a and guide structure 110.In some embodiments
In, transparent electrode 144 is in a second direction d 2 and discontinuous, and has gap (as schemed between adjacent light channel structure 112
Shown in 1C).Clearance G between this gap and adjacent light channel structure 112 communicates with each other, and can have identical or different width
Degree.On the other hand, it is set to the transparent electrode of the side relative to liquid crystal switchable layer 140 of the second liquid crystal alignment layer 142b (not
Show) it can be integrated into element arrays 130, or (can not show between element arrays 130 and the second liquid crystal alignment layer 142b
Out).For example, the material of above-mentioned a pair of of transparent electrode can respectively include tin indium oxide (indium tin oxide, ITO),
Aluminum zinc oxide (aluminum zinc oxide, AZO), indium-zinc oxide (indium zinc oxide, IZO) or combinations thereof.
It may be configured to control the steering of liquid crystal molecule LC positioned at a pair of of transparent electrode of the opposite sides of liquid crystal switchable layer 140, in turn
Control the illuminated state or dark-state of the different zones of display device 10.In some embodiments, display device 10 may also include frame glue SL,
Wherein frame glue SL is set between first substrate 100 and the second substrate 102.In some embodiments, frame glue SL may be disposed at light
Guide structure 110 on the side of the second substrate 102, and extend to the second liquid crystal alignment layer 142b, but the present invention is not with this
It is limited.In addition, frame glue SL may be disposed at the fringe region of the second substrate 102.Although Figure 1A and Figure 1B only show the one of frame glue SL
Part, frame glue SL can actually surround liquid crystal switchable layer 140, to avoid liquid crystal switchable layer 140 by the aqueous vapor of external environment and
Oxygen influences.In some embodiments, the material of frame glue SL may include light-hardening resin or thermosetting resin.
Based on above-mentioned, the open and close of display device, this hair are controlled compared to the polarization direction using control light
Bright embodiment can control the total reflection path and optical coupling path of light using the birefringence characteristic of liquid crystal switchable layer 140, with
Form the dark-state and illuminated state of display device 10.In this way, can be not required to that polarisation is arranged in the opposite sides of liquid crystal switchable layer 140
Piece does not also need setting colored filter.Therefore, the light transmittance of display device 10 can be greatly improved, display can be also improved
The optical efficiency of device 10.In addition to this, compared to the outside for a pair of of substrate that backlight module is set to display device, this hair
First light emitting module 120 is set between a pair of of substrate of display device 10 (that is, first substrate 100 and second by bright embodiment
Between substrate 102).In this way, which the thickness of display device 10 can be reduced further.
Fig. 3 is according to the first substrate 100 of some embodiments of the invention, guide structure 110 and the first light emitting module 320
Top view.
Referring to figure 2. with Fig. 3, first substrate 100 shown in Fig. 3,320 phase of guide structure 110 and the first light emitting module
It is similar to first substrate 100, guide structure 110 and the first light emitting module 120 shown in Fig. 2.The difference of the two is shown in Fig. 3
Multiple first light emitting modules 320 position is corresponding respectively and is adjacent to multiple light channel structures 112.For example, every one first
320 position of light emitting module is corresponding and is adjacent to the first end face TS1 of each light channel structure 112.Every one first light emitting module 320
It may include a plurality of light-emitting elements, and a plurality of light-emitting elements are all adjacent to same light channel structure 112.For example, every one first
Light emitting module 320 may include light-emitting component 322a, light-emitting component 322b and light-emitting component 322c.Each light-emitting component may include
One or more light emitting diodes with identical dominant wavelength ranges.Light emitting diode can be inorganic light-emitting diode or organic light emission
Diode, and the size range of light emitting diode can be 1 μm to 10000 μm.For example, light-emitting component 322a may include one or
Multiple red light-emitting diodes, light-emitting component 322b may include one or more green light LEDs, and light-emitting component 322c can
Including one or more blue light-emitting diodes.The dominant wavelength ranges for the light that red light-emitting diode is issued can be for 610nm extremely
670nm.The dominant wavelength ranges for the light that green light LED is issued can be 510nm to 560nm.Blue light-emitting diode is sent out
The dominant wavelength ranges of light out can be 254nm to 470nm.Those skilled in the art can adjust first according to design requirement and shine
The quantity of light-emitting component and its dominant wavelength ranges in module 320, the present invention is not limited thereto.
In the embodiment shown in fig. 3, it can be controlled by driving circuit (not shown) multiple in the first light emitting module 320
Light-emitting component, so that the first light emitting module 320 can issue the light with different dominant wavelength ranges according to specific time sequence.In other words, exist
In some embodiments, the first light emitting module 320 only issues the light of single dominant wavelength ranges in the same time, and in a period of time
Interior capable of emitting a variety of light with multiple and different dominant wavelength ranges.
Fig. 4 be according to the first substrate 100 of some embodiments of the invention, guide structure 110, the first light emitting module 120 with
And second light emitting module 420 top view.
Referring to figure 2. with Fig. 4, embodiment shown in Fig. 4 is similar to embodiment shown in Fig. 2.The difference of the two is Fig. 4
Shown in display device may also include multiple second light emitting modules 420 to replace the second smooth recovery layer 128 of Fig. 2, it is plurality of
Second light emitting module 420 is set on the first inner surface S1 of first substrate 100.In addition, multiple second light emitting modules 420 with it is more
A first light emitting module 120 is located at the opposite sides of guide structure 110.Every one second light emitting module 420 may include multiple shines
Element.For example, every one second light emitting module 420 may include light-emitting component 422a, light-emitting component 422b and light-emitting component
422c.In some embodiments, the light-emitting component 422a of the second light emitting module 420, light-emitting component 422b and light-emitting component
Position is corresponding respectively and is adjacent to the second end face TS2 of multiple light channel structures 112 by 422c, and the luminous member of the first light emitting module
Position is corresponding respectively and is adjacent to the of multiple light channel structures 112 by part 122a, light-emitting component 122b and light-emitting component 122c
One end face TS1.In some embodiments, each light-emitting component of the second light emitting module 420 has single dominant wavelength ranges.Herein
In a little embodiments, each light-emitting component may include one or more light emitting diodes with identical dominant wavelength ranges.Light-emitting diodes
Guan Kewei inorganic light-emitting diode or Organic Light Emitting Diode, and the size range for the two-body that shines can be 1 μm to 10000 μm.It lifts
For example, light-emitting component 422a may include one or more red light-emitting diodes, and light-emitting component 422b may include that one or more are green
Light-emitting diode, and light-emitting component 422c may include one or more blue light-emitting diodes.Red light-emitting diode is issued
The dominant wavelength ranges of light can be 610nm to 670nm.The dominant wavelength ranges for the light that green light LED is issued can be
510nm to 560nm.The dominant wavelength ranges for the light that blue light-emitting diode is issued can be 254nm to 470nm.Art technology
Personnel can adjust the quantity and its dominant wavelength ranges of light-emitting component in the second light emitting module 420, this hair according to design requirement
It is bright to be not limited thereto.
In some embodiments, the first light emitting module 120 relative to each other and the master having the same of the second light emitting module 420
Wave-length coverage.In other words, the first light emitting module 120 relative to each other is with the second light emitting module 420 with identical dominant wavelength model
The light-emitting component enclosed is adjacent to the first end face TS1 and second end face TS2 of same light channel structure 112 respectively.For example, divide
Not Bao Kuo one or more red diodes light-emitting component 122a and light-emitting component 422a can position be corresponding respectively and is adjacent to light
The first end face TS1 and second end face TS2 of channel design 112.In this way, by light channel structure 112 first end face TS1 with
The light that second end face TS2 enters light channel structure 112 can have substantially the same wave-length coverage.In other words, same light is logical
The both ends of the surface of road structure 112 are all equipped with the light-emitting component of phase co-wavelength.In this present embodiment, the first light emitting module 120 and second
Light emitting module 420 can drive simultaneously or timesharing driving.
Fig. 5 is according to the first substrate 100 of some embodiments of the invention, guide structure 110 and the first light emitting module 520
Top view.
Referring to figure 2. with Fig. 5, embodiment shown in fig. 5 is similar to embodiment shown in Fig. 2.Difference between the two exists
It is corresponding in each luminous element position of the first light emitting module 520 shown in fig. 5 and be adjacent at least two light channel structures 112
Side.For example, the first light emitting module 520 may include light-emitting component 522a, light-emitting component 522b and light-emitting component
522c, and position is corresponding respectively and to be adjacent to three light logical by light-emitting component 522a, light-emitting component 522b and light-emitting component 522c
The first end face TS1 of road structure 112.Each light-emitting component may include one or more light-emitting diodes with identical dominant wavelength ranges
Pipe.Light emitting diode can be inorganic light-emitting diode or Organic Light Emitting Diode, and the size range for the two-body that shines can be 100 μm
To 10000 μm.For example, light-emitting component 522a may include one or more red light-emitting diodes, and light-emitting component 522b can be wrapped
One or more green light LEDs are included, and light-emitting component 522c may include one or more blue light-emitting diodes.Red light-emitting
The dominant wavelength ranges for the light that diode is issued can be 610nm to 670nm.The dominant wavelength for the light that green light LED is issued
Range can be 510nm to 560nm.The dominant wavelength ranges for the light that blue light-emitting diode is issued can be 254nm to 470nm.Institute
Technical staff can adjust the quantity of light-emitting component and its main wave in the first light emitting module 520 according to design requirement in category field
Long range, the present invention is not limited thereto.
In some embodiments, light-emitting component 522a, light-emitting component 522b and light-emitting component 522c can all send out for blue light
Optical diode, and correspond respectively to the multiple groups optical channel knot of light-emitting component 522a, light-emitting component 522b and light-emitting component 522c
Wavelength conversion material can be covered in at least two groups of structure 112, so that the light channel structure 112 of these groups can transmit different masters
The light of wave-length coverage.For example, can and turn not covered with wavelength corresponding to one group of light channel structure 112 of light-emitting component 522a
Conversion materials, the wavelength conversion material and correspondence that red can be covered with corresponding to one group of light channel structure 112 of light-emitting component 522b
Viridescent wavelength conversion material can be covered in one group of light channel structure 112 of light-emitting component 522c.In some embodiments, on
The wavelength conversion material stated may include fluorescent molecule, quantum dot, quantum rod or combinations thereof.
Fig. 6 is according to the first substrate 100 of some embodiments of the invention, guide structure 110 and the first light emitting module 620
Top view.
Referring to figure 5. with Fig. 6, embodiment shown in fig. 6 is similar to embodiment shown in fig. 5.The difference of the two is Fig. 6
Shown in every one first light emitting module 620 a plurality of light-emitting elements all positions it is corresponding and be adjacent to some light channel structures 112
Side.For example, every one first light emitting module 620 may include light-emitting component 622a, light-emitting component 622b and the member that shines
Part 622c, and all positions light-emitting component 622a, light-emitting component 622b and light-emitting component 622c are corresponding and adjacent all logical in three light
The first end face TS1 of road structure 112.Each light-emitting component may include one or more light-emitting diodes with identical dominant wavelength ranges
Pipe.Light emitting diode can be inorganic light-emitting diode or Organic Light Emitting Diode, and the size range for the two-body that shines can be 100 μm
To 10000 μm.For example, light-emitting component 622a may include one or more red light-emitting diodes, and light-emitting component 622b can be wrapped
One or more green light LEDs are included, and light-emitting component 622c may include one or more blue light-emitting diodes.Red light-emitting
The dominant wavelength ranges for the light that diode is issued can be 610nm to 670nm.The dominant wavelength for the light that green light LED is issued
Range can be 510nm to 560nm.The dominant wavelength ranges for the light that blue light-emitting diode is issued can be 254nm to 470nm.This
Field technical staff can adjust the quantity of light-emitting component and its dominant wavelength model in the first light emitting module 620 according to design requirement
It encloses, the present invention is not limited thereto.
In the embodiment shown in fig. 6, it can be controlled by driving circuit (not shown) multiple in the first light emitting module 620
Light-emitting component, so that the first light emitting module 620 can issue the light with different dominant wavelength ranges according to specific time sequence.In other words, exist
In some embodiments, the first light emitting module 620 only issues the light of single dominant wavelength ranges in the same time, and in different time
Capable of emitting a variety of light with multiple and different dominant wavelength ranges.
Fig. 7 is according to the first substrate 100 of some embodiments of the invention, guide structure 710 and the first light emitting module 720
Top view.
Referring to figure 5. with Fig. 7, embodiment shown in Fig. 7 is similar to embodiment shown in fig. 5.The difference of the two is Fig. 7
Shown in a plurality of light-emitting elements of every one first light emitting module 720 D2 is alternately arranged in guide structure 710 in a second direction
Opposite two sides.In addition to this, multiple light channel structures of guide structure 710 are along second direction D2 alternately phase toward each other
Anti- first direction D1 (the e.g. both forward and reverse directions of first direction D1) offset.Offset direction based on light channel structure, it is multiple
Light channel structure can be divided into light channel structure 712a and light channel structure 712b.Specifically, in the embodiment of Fig. 7, two-by-two
There is offset DV in the first direction dl between adjacent light channel structure 712a and light channel structure 712b.Citing and
Speech, every one first light emitting module 720 may include light-emitting component 722a, the light-emitting component 722b along second direction D2 arranged in sequence
And light-emitting component 722c.Light-emitting component 722a, light-emitting component 722b and light-emitting component 722c difference position are corresponding and adjacent
In two light channel structures.In some embodiments, light-emitting component 722a is corresponding with the difference position light-emitting component 722c and adjacent
In the first end face TS1 of two light channel structure 712a, and the position light-emitting component 722b is corresponding and is adjacent to two optical channel knots
The second end face TS2 of structure 712b.Each light-emitting component may include one or more light emitting diodes with identical dominant wavelength ranges.
Light emitting diode can be inorganic light-emitting diode or Organic Light Emitting Diode, and the size range for the two-body that shines can be for 100 μm extremely
10000μm.For example, light-emitting component 722a may include one or more red light-emitting diodes, and light-emitting component 722b may include
One or more green light LEDs, and light-emitting component 722c may include one or more blue light-emitting diodes.Red light-emitting two
The dominant wavelength ranges for the light that pole pipe is issued can be 610nm to 670nm.The dominant wavelength model for the light that green light LED is issued
Enclosing can be 510nm to 560nm.The dominant wavelength ranges for the light that blue light-emitting diode is issued can be 254nm to 470nm.Ability
Field technique personnel can adjust the quantity of light-emitting component and its dominant wavelength model in the first light emitting module 720 according to design requirement
It encloses, the present invention is not limited thereto.It, can be (such as right in the appropriate location of optical channel according to different demands in another variant embodiment
Answer the other end of light-emitting component) it is equipped with the second recovery layer, to promote light utilization efficiency and brightness.
In conclusion controlling the open and close of display device, this hair compared to the polarization direction using control light
Bright embodiment can control the total reflection path and optical coupling path of light using the birefringence characteristic of liquid crystal switchable layer, to be formed
The dark-state and illuminated state of display device.In this way, can be not required to that polaroid is arranged in the opposite sides of liquid crystal switchable layer, also do not need
Colored filter is set.Therefore, the light transmittance of display device can be greatly improved.In other words, the optics of display device can be improved
Efficiency.In addition to this, compared to the outside for a pair of of substrate that backlight module is set to display device, the embodiment of the present invention is by
One light emitting module is set between a pair of of substrate of display device (that is, between first substrate and the second substrate).In this way,
The thickness of display device can further be reduced.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, any technical field
Middle technical staff, without departing from the spirit and scope of the present invention, when can make a little variation and retouching, therefore protection of the invention
Range is subject to view as defined in claim.
Claims (14)
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| CN111477655A (en) * | 2019-01-24 | 2020-07-31 | 三星电子株式会社 | display device |
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| TW201947302A (en) | 2019-12-16 |
| TWI657296B (en) | 2019-04-21 |
| CN108919561B (en) | 2021-09-28 |
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