CN108336122A - A kind of display module, display system and display system production method - Google Patents
A kind of display module, display system and display system production method Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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Abstract
The present invention relates to display equipment technical fields; provide a kind of display module, display system and display device production method; display module includes the basal layer being made of clear material, the dimming unit on basal layer, the light source unit on dimming unit and the protective layer on light source unit; light source unit is used for from main light emission, and dimming unit is for controlling the transmission state of light；Due to being provided with dimming unit between basal layer and light source unit, when dimming unit is in first state, light can not transmit, when dimming unit is in the second state, light can be transmitted from dimming unit, so as to control whether light can transmit by controlling the working condition of dimming unit, it is unilateral luminous or dual-side emissive to which display module on the one hand can be controlled, whether transparent on the other hand can also controls display module.
Description
Technical field
The present invention relates to display equipment technical fields, are to be related to a kind of display module, display system and aobvious more specifically
Show system production method.
Background technology
In recent years, under the promotion of mobile communication technology, electronic communication technology and Internet technology, the world just enters letter
The exchange epoch are ceased, have magnanimity information to pass to people by the display screen of the products such as smart mobile phone, computer, TV all the time
Class.An important interface of the display device as human-computer interaction, plays a crucial role in information exchanging process.According to
The difference of displaying principle, flat-panel monitor can be generally divided into liquid crystal display, and (Liquid Crystal Display, are abbreviated as
LCD), plasma scope (Plasma Display Panel, be abbreviated as PDP), organic light emitting display (Organic
Light-Emitting Diode, are abbreviated as OLED), (Field Emission Display, are abbreviated as electroluminescent display
) and electroluminescent display (Electro Luminescense Display, be abbreviated as ELD) etc. FED.OLED have LCD without
The advantage of method analogy, by self-luminous, flexibility, wide viewing angle, can transparence display the advantages that, gradually substitution LCD and PDP
Application field.Such as major mobile phone brand manufacturers and emerging virtual reality (Virtual Reality, be abbreviated as VR) industry
Numerous and confused setting input OLED screen shows field, and universal trend of the small size OLED display technologies in screen display field is also getting faster.
With the development of science and technology, since the display in transparence display technology can inadvertently stimulate the vision of audient
Nerve, distinct theme, novel design so that advertisement image is more lively, does not have mandatory, the information content completely
It more easily being recognized and is received by audient, therefore its technical advantage becomes increasingly conspicuous, transparent display is just quickly strided forward to commercial field,
And be with a wide range of applications in fields such as mobile device, jewelry and luxury goods, while attracting consumer's sight, also pierce
Swash consumption, becomes outshining othersOne branch of the tree is particularly thriving for display industry really.Transparent display has a degree of penetrability, can show picture
The background at face rear is applicable to building and vehicle window and shopper window etc..In addition to original display function, transparent display
Can also have and the functions such as information are provided, can be used for building field, advertisement field, public sphere etc., and drive monitor market
Growth.
Currently, transparent display can only rest on laboratory stage mostly, the technology mainly used includes electrowetting technology
(mainly the physics such as deformation, displacement are brought it about to change its contact angle by changing the voltage between drop and insulating substrate
Variation) and backlight side patch technology (surrounding that backlight is fitted in display), however it is equal when use above-mentioned technical proposal
The light transmission state of display can not be controlled.
The above deficiency, has much room for improvement.
Invention content
The purpose of the present invention is to provide a kind of display modules, to solve the light transmission shape of display existing in the prior art
The technical issues of state is unable to control.
To achieve the above object, the technical solution adopted by the present invention is：A kind of display module is provided, including：
Basal layer is made of clear material；
Dimming unit is set on the basal layer, is controlled for the transmission state to light；
Light source unit is set on the dimming unit, is used for from main light emission；
Protective layer is set on the light source unit.
Further, the light source unit includes：
Light source unit substrate, is made of clear material；
Light source unit first electrode is set on the light source unit substrate, is made of clear material；
Transistor is set on the light source unit substrate, is connect with the light source unit first electrode；
Selfluminous cell is set in the light source unit first electrode, for generating light；
Light source unit second electrode is set on the selfluminous cell, is made of clear material.
Further, the selfluminous cell includes：
Luminescent layer is set between the light source unit first electrode and the light source unit second electrode；
Electron transfer layer is set between the luminescent layer and the light source unit second electrode；
Hole transmission layer is set between the luminescent layer and the light source unit first electrode；
Alternatively,
The selfluminous cell includes：
Luminescent layer is set between the light source unit first electrode and the light source unit second electrode；
Hole transmission layer is set between the luminescent layer and the light source unit second electrode；
Electron transfer layer is set between the luminescent layer and the light source unit first electrode.
Further, the dimming unit includes：
The first basal layer of dimming unit, is made of translucent material；
The first conductive layer of dimming unit is set on the first basal layer of the dimming unit；
Polymer dispersed liquid crystal layer is set on the first conductive layer of the dimming unit；
The second conductive layer of dimming unit is set on the polymer dispersed liquid crystal layer；
The second basal layer of dimming unit is set on the second conductive layer of the dimming unit, is made of translucent material.
Further, touch control unit is additionally provided between the light source unit and the protective layer, the touch control unit includes：
Touch control unit substrate, is made of translucent material；
Touch control unit first electrode is set to a surface of the touch control unit substrate；
Touch control unit second electrode is set to another surface of the touch control unit substrate.
It is multiple described aobvious the present invention also aims to provide a kind of display system, including multiple above-mentioned display modules
Show module at array arrangement.
The present invention also aims to provide a kind of display system production method, including：
Light source unit is set；
Dimming unit is set, and the light source unit is bonded with the dimming unit；
Protective layer is bonded with the light source unit, and basal layer is bonded with the dimming unit.
Further, the setting light source unit step includes：
Transistor base is set, light source unit first electrode is set on transistor base；
Selfluminous cell is set, hole transmission layer, luminescent layer are plated successively on the surface of the light source unit first electrode
And electron transfer layer；
The light source unit second electrode is plated on the surface of the electron transfer layer.
Further, the setting selfluminous cell step includes：
It will be placed in the cavity of evaporated device equipped with the transistor base of the light source unit first electrode；
Evaporation condition is set, and the temperature of the cavity is 350 °~410 °, and the vacuum degree of the cavity is 10-4~10- 3Pa, the transistor base are 250 millimeters~750 millimeters at a distance from the evaporation source of the evaporated device；
The selfluminous cell is deposited, the hole transport is plated successively on the surface of the light source unit first electrode
Layer, the luminescent layer and the electron transfer layer, the hole transmission layer, the luminescent layer and the electron transfer layer total thickness
Degree is 3 microns~30 microns.
Further, further include after the setting dimming unit step：
Touch control unit is set, touch control unit first electrode and touch control unit are plated respectively on two surfaces of touch control unit substrate
Second electrode；
The touch control unit is bonded with the light source unit.
A kind of advantageous effect of display module provided by the invention is：Due to being arranged between basal layer and light source unit
Dimming unit, when dimming unit is in first state, light can not transmit, when dimming unit is in the second state, light
Line can be transmitted from dimming unit, so as to control whether light can be sent out by controlling the working condition of dimming unit
Life transmission is unilateral luminous or dual-side emissive on the one hand control display module, on the other hand can also control aobvious
Show whether module is transparent.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of display module provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the light source unit of display module provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the dimming unit of display module provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram when dimming unit of display module provided in an embodiment of the present invention does not work；
Schematic diagram when Fig. 5 is the dimming unit work of display module provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the touch control unit of display module provided in an embodiment of the present invention；
Fig. 7 is the flow chart one of display system production method provided in an embodiment of the present invention；
Fig. 8 is the flow chart of the setting light source unit of display system production method provided in an embodiment of the present invention；
Fig. 9 is the flowchart 2 of display system production method provided in an embodiment of the present invention.
Wherein, each reference numeral in figure：
1- basal layers；2- dimming units；
The first basal layer of 21- dimming units；The first conductive layer of 22- dimming units；
23- polymer dispersed liquid crystal layers；The second conductive layer of 24- dimming units；
The second basal layer of 25- dimming units；26- drives；
3- light source units；
31- light source unit substrates；32- light source unit first electrodes；
33- transistors；34- selfluminous cells；
341- hole transmission layers；342- luminescent layers；
343- electron transfer layers；35- light source unit second electrodes；
36- light source unit protective layers；4- protective layers；
5- touch control units；51- touch control unit substrates；
52- touch control unit first electrodes；53- touch control unit second electrodes；
The first silicon dioxide layers of 54-；The second silicon dioxide layers of 55-.
Specific implementation mode
In order to make technical problems, technical solutions and advantages to be solved be more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It is located on another component indirectly.When a component is referred to as " being connected to " another component, it can be it is direct or
It is connected in succession on another component.Term "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top",
The orientation or position of the instructions such as "bottom", "inner", "outside" are orientation based on ... shown in the drawings or position, are merely for convenience of describing,
It should not be understood as the limitation to the technical program.Term " first ", " second " are used merely to facilitate description purpose, and should not be understood as
It indicates or implies relative importance or implicitly indicate the quantity of technical characteristic.The meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Referring to Fig. 1, a kind of display module, including the basal layer 1, the tune on basal layer 1 that are made of clear material
Light unit 2, the light source unit 3 on dimming unit 2 and the protective layer 4 on light source unit 3, light source unit 3 are used for
From main light emission, dimming unit 2 is for controlling the transmission state of light.
In the present embodiment, light source unit 3 and protective layer 4 are made of clear material, and dimming unit 2 is used for light
Transmission state controlled, i.e. dimming unit 2 can control whether light can transmit from dimming unit 2, when light modulation is single
When member 2 is in first state, light can not transmit；When dimming unit 2 is in the second state, light can be from dimming unit 2
Middle transmission.
A kind of operation principle of display module provided in this embodiment is as follows：
When display module does not shine, light source unit 3 does not generate light.When dimming unit 2 is in first state, light
It can not transmit, display module is not transparent at this time；When dimming unit 2 is in the second state, since light can be from light modulation
It transmits in unit 2, can also be transmitted when ambient light is irradiated in display module at this time, therefore display module is transparent
's.
When needing display module to shine, light source unit 3 is from main light emission, on the one hand, the light that light source unit 3 generates is from light
Protective layer 4 is reached after the surface outgoing of source unit 3, and is emitted after protective layer 4 so that user can watch light
The image of source unit 3；On the other hand, the light that light source unit 3 generates is reached after being emitted from another surface of light source unit 3 and is adjusted
Light unit 2, when dimming unit 2 is in first state, light can not transmit, and the light that light source unit 3 generates at this time can only be from
Protective layer 4 is emitted；When dimming unit 2 is in the second state, light can be transmitted from dimming unit 2, at this time light source unit 3
The light of generation can be both emitted from protective layer 4, can also be emitted from basal layer 1 so that user can be from both direction
The image of light source unit 3 can be watched.
A kind of advantageous effect of display module provided in this embodiment is：Due between basal layer 1 and light source unit 3
Provided with dimming unit 2, when dimming unit 2 is in first state, light can not transmit, when dimming unit 2 is in the second shape
When state, light can be transmitted from dimming unit 2, so as to control light by controlling the working condition of dimming unit 2
Whether can transmit, be unilateral luminous or dual-side emissive to which display module on the one hand can be controlled, on the other hand
It is whether transparent that display module can be controlled.
In one embodiment, basal layer 1 is glass substrate, on the one hand has good light transmittance, it is ensured that light can
Through optical property is more stablized, and another aspect can also play a supporting role to dimming unit 2 and protective effect.Protective layer 4
For glass substrate, on the one hand there is good light transmittance, it is ensured that light can penetrate, and optical property is more stablized, on the other hand
Also it can play a protective role to light source unit 3, overall structure is more secured.
Referring to Fig. 2, further, light source unit 3 includes the light source unit substrate 31 being made of clear material, is set to light
Light source unit first electrode 32 and transistor 33 on source unit substrate 31, selfluminous cell 34 and light for generating light
Source unit second electrode 35, wherein light source unit first electrode 32 are made of clear material, to ensure that light can smoothly lead to
It crosses；Transistor 33 is connect with light source unit first electrode 32, so as to play on-off action, controls light source unit first electrode
Whether 32 be powered；Light source unit second electrode 35 is made of clear material, it is ensured that light can pass through；Selfluminous cell 34
Between light source unit first electrode 32 and light source unit second electrode 35, light source unit first electrode 32 is preferably anode,
Light source unit second electrode 35 is preferably cathode, so as to by the second electricity of light source unit first electrode 32 and light source unit
Voltage is generated between pole 35 to control the working condition of selfluminous cell 34.
In one embodiment, transistor 33 is thin film transistor (TFT) (Thin Film Transistor, be abbreviated as TFT),
Light source unit substrate 31 is the thin film transistor base plate made of glass-based material (being abbreviated as TFT substrate), is had good
Light rate and the optical property stablized.Thin film transistor base plate is preferably active matrix structure driving, each in this structure
Pixel (i.e. each small luminescence unit) is equipped with thin film transistor (TFT), and each pixel is equipped with a charge storage electricity
Hold, peripheral drive circuit and array of display whole system are integrated on thin film transistor base plate.The active square that the present embodiment uses
The type of drive of battle array structure belongs to static drive mode, has storage effect, complete (100%) load driving can be carried out, with nothing
Source matrix needs, which are scanned every strip electrode, to be compared, and this driving is not limited by scan electrode number, can be only to each pixel
It is vertical to carry out selective control, control the luminescent color of each pixel, brightness, intensity, it is easy to accomplish high brightness, high-resolution and
Colorization, while and efficiency can be improved, reduce power consumption, and with response speed quickly.
In one embodiment, thin film transistor (TFT) is that GaAs (GaAs) type thin film transistor (TFT) (uses GaAs conduct
Semi-conducting material).Conventional thin film transistor generally use low temperature polycrystalline silicon is as P-N junction material, but low-temperature polysilicon silicon materials
Without translucency, the increase in non-transparent region in the display area of display module can be caused, so that thin film transistor (TFT) base
The integral light-transmitting rate of plate can reduce.Using GaAs semi-conducting material in the present embodiment, since GaAs material is transparent
Material, translucency is good, the transmission region in display area so as to increase display module.Moreover, due to arsenic
The electron mobility of gallium material is 5.7 times of traditional silicon materials, and it has that very high electron mobility, energy gap be big, band
The characteristics such as gap is direct band gap, the power of consumption is low, thus it is more advantageous to the quantum effect for improving luminescent material in light source unit 3
Rate, and then help to reduce the size of thin film transistor (TFT), reduce invalid display area so that the light-emitting zone of display module increases
Greatly, aperture opening ratio (i.e. the ratio of the permeable effective coverage of light) higher (close to 90%) of display module, shows pair of image
It is more saturated than degree higher, color.The lower copper of resistivity can be used as X electrode and Y electricity in the electrode material of thin film transistor (TFT)
Pole (the X rows electrode i.e. in film transistor matrix structure and Y row electrode), therefore in the case of same resistance, X electrode and Y
Electrode can be made thinner, the non-transparent region in display area so as to further decrease display module, it is ensured that film
The integral light-transmitting rate higher of transistor base, while can also ensure that the response speed of thin film transistor (TFT) is unaffected.
Further, selfluminous cell 34 be OLED light emitting unit, including be cascading hole transmission layer 341,
Luminescent layer 342 and electron transfer layer 343, hole transmission layer 341 are connect with light source unit first electrode 32, electron transfer layer
343 connect with light source unit second electrode 35.Its hole-transporting layer 341 is used for transmission hole, and electron transfer layer 343 is for passing
Transmission of electricity.The hole that anode (i.e. light source unit first electrode 32) generates is transmitted by hole transmission layer 341, and cathode is (i.e.
Light source unit second electrode 35) generate electronics be transmitted by electron transfer layer 343, hole and electronics are in luminescent layer 342
It is inside compounded to form exciton, the compound releasing energy of exciton, and transfers energy to point of the organic luminescent substance in luminescent layer 342
The molecule absorption energy of son, organic luminescent substance can be excited and be in excitation state, when excited molecule returns to ground state from excitation state
When radiation transistion, to generate luminescence phenomenon.
In one embodiment, luminescent layer 342 is preferably organic luminous layer, and containing three kinds of phosphorescence in organic luminous layer mixes
Sundries (such as PQIr can provide red light, Ir (PPy)3Green light, FIr can be provided6Blue light can be then provided) organic light emission object
Matter is the luminous main parts OLED.OLED relies on electric current driving, when each display module obtains drive signal, controls arsenic
Change the conducting of gallium transistor npn npn, so that light source unit first electrode 32 is connected, electrons and holes exist under the driving of electric current
Compound generation exciton in organic luminous layer excites the molecule of organic luminous layer that it is made to transit to excitation state, and three kinds different organic
Object molecule can send out the light wave of three kinds of different colours of red, green, blue during returning to ground state from excitation state, these three light waves are logical
The light for being compounded to form different colours is crossed, so as to realize from main light emission without backlight.By light source in this present embodiment
Unit first electrode 32, selfluminous cell 34 and light source unit second electrode 35 are the material of high transparency, it is possible to real
Existing both sides shine.
In one embodiment, light source unit first electrode 32 is to be vaporized on the ITO on 31 surface of light source unit substrate
(Indium Tin Oxide, i.e. tin indium oxide) film layer, light source unit second electrode 35 are to be vaporized on 34 surface of selfluminous cell
Ito film layer, ito film layer be transparent film layer, have good conductive property, work function reaches 5.2eV, and light transmittance can reach
90%；Ito film layer is close with the potential energy of hole transmission layer 341, to be more advantageous to the injection in hole, and then is conducive in raising
Quantum efficiency and light transmittance.Due to using glass substrate (material of light source unit substrate 31 can be glass) to be used as supporting substrate,
Higher temperature may be used when plating ito film layer and selfluminous cell 34 on the glass substrate, the film layer formed in this way more causes
It is close, adhesive force is more preferable, and glass substrate and the coefficient of thermal expansion of film layer are close, will not occur in the case of the larger temperature difference
The problem of film layer cracks, falls off.Simultaneously because not containing water oxygen base in glass substrate, will not decompose, therefore will not be to self-luminous
Organic layer in unit 24 has an impact.
Hole transmission layer 341, luminescent layer 342 and the electron transfer layer 343 of selfluminous cell 34 are vaporized on light source successively
In unit first electrode 32, need to carry out surface smoothness processing to light source unit first electrode 32 before being deposited, this is
Due to：(1) coarse 32 surface of light source unit first electrode will make light generate diffusing reflection, thus can reduce outgoing light efficiency,
Reduce the external quantum efficiency of OLED；(2) coarse 32 surface of light source unit first electrode can influence the field distribution in OLED, cause
So that luminous intensity is reduced, thus need the surface progress to light source unit first electrode 32 smooth, to avoid the above problem.Have
Machine luminescent layer selects that molecular structure is relatively small, the accurate small molecule of molecular weight, and the light wave spectrum of such stimulated emission is relatively narrow, face
The contrast of color can reach 1000000:1.
In one embodiment, light source unit first electrode 32 or cathode, light source unit second electrode 35 are corresponding
For anode, selfluminous cell 34 includes hole transmission layer 341, luminescent layer 342 and the electron-transport being cascading at this time
Layer 343, hole transmission layer 341 is connect with light source unit second electrode 35, electron transfer layer 343 and light source unit first electrode 32
Connection.
Further, light source unit 3 further includes the light source unit protective layer 36 being made of clear material, light source unit protection
Layer 36 is covered in the surface of light source unit second electrode 35, so as to play a protective role to light source unit second electrode 35.
Preferably, light source unit protective layer 36 is also coated on light source unit first electrode 32, transistor 33, selfluminous cell 34 and light
The surrounding of source unit second electrode 35 effectively extends certainly so as to prevent selfluminous cell 34 from being contacted with outside water or oxygen
The service life of luminescence unit 34, so as to go to ensure that light source unit 3 is with good stability and service life.
Referring to Fig. 3, further, dimming unit 2 includes the first basal layer of dimming unit 21 being cascading, adjusts
(Polymer Dispersed Liquid Crystal, are abbreviated as the first conductive layer of light unit 22, polymer dispersed liquid crystal layer 23
PDLC), the second conductive layer of dimming unit 24 and the second basal layer of dimming unit 25, wherein 21 He of the first basal layer of dimming unit
The second basal layer of dimming unit 25 is made of translucent material, the second conductive layer of the first conductive layer of dimming unit 22 and dimming unit
24 connect with the driving 26 for providing driving voltage, so as to provide the work shape of control polymer dispersed liquid crystal layer 23
The electric field of state.
In one embodiment, the first basal layer of dimming unit 21 is transparent membrane or glass substrate, dimming unit first
Conductive layer 22 is the indium tin oxide transparent conducting film for being plated in 21 surface of the first basal layer of dimming unit；The second substrate of dimming unit
Layer 25 is transparent membrane or glass substrate, and the second conductive layer of dimming unit 24 is to be plated in 25 surface of the second basal layer of dimming unit
Indium tin oxide transparent conducting film.Polymer dispersed liquid crystal layer is that liquid crystal is dispersed in organic solid-state polymerization with the particle of micron dimension
In object matrix, freely it is orientated since the optical axis for the particle being made of liquid crystal molecule is in, the refractive index of refractive index and matrix is not
Matching is scattered when light is by matrix by droplet by is in opaque milky white state or translucent strongly.
Referring to Fig. 4, when being not added with external electric field, i.e. the first conductive layer of dimming unit 22 and the second conductive layer of dimming unit 24
Between there is no extra electric field, the optical axis of each particle being made of liquid crystal molecule in being freely orientated, but fine-grained optical axis
Be orientated it is different, so overall be presented a kind of unordered state distribution.Since liquid crystal is strong optics and dielectric anisotropy
Material, effective refractive index not with the index matching of matrix and differ larger, when light is from side incidence polymeric matrix
When, because of extremely non-uniform index contrast, light can be by strong scattering, refraction, it is difficult to be reached normal through polymeric matrix
Opaque dull gray state or translucent milky white state is presented in the other side, such polymer dispersed liquid crystal layer.
Referring to Fig. 5, when applying external electric field, i.e. the first conductive layer of dimming unit 22 and the second conductive layer of dimming unit 24
Between be equipped with extra electric field, the optical axis direction for the particle being made of liquid crystal molecule is consistent with direction of an electric field, the ordinary refractive of particle
Rate and the refractive index of matrix match, are almost the same, and light can penetrate matrix, and polymer dispersed liquid crystal layer is transparent.
Referring to Fig. 4, when removing external electric field, that is, removes the first conductive layer of dimming unit 22 and dimming unit second is conductive
Extra electric field between layer 24, particle are restored to initial scattering state, therefore polymer again under the action of base elastomer energy
Dispersing liquid crystal layer has electric control optical switch characteristic under the action of electric field, so as to be to control product according to the actual needs
Permeability.
In one embodiment, when applying between the first conductive layer of dimming unit 22 and the second conductive layer of dimming unit 24
When rated voltage is the driving voltage of 40V-80V, then electric field can be formed within the time less than 50ms, liquid crystal particle will be sent out
Raw rotation.By the calculation formula E=U/d of electric field, under the conditions of identical thickness d, the size of voltage U determines the power of electric field E, from
And the rotation for controlling liquid crystal particle is strong and weak, and then control the transmitance of dimming unit 2.In order to ensure the uniformity of electric field, dim
The first conductive layer of unit 22 and the second conductive layer of dimming unit 24 need to handle by flatness, it is ensured that its surfacing, this is
Because the spike of conductive layer surface will cause high local fields, high and low non-uniform electric field that can make the rotation of liquid crystal particle optical axis
Angle is inconsistent, then whole system will will appear non-uniform situation to the transmitance of light, influences entire display module
Translucent effect.In order to improve wavelength in the transmitance of 380nm~760nm visible light wave ranges, the diameter of liquid crystal particle can be reduced,
The transmitance of dimming unit 2 is 86%~88% at this time.When the thickness of polymer dispersed liquid crystal layer 23 is about 20 μm, the response time
Less than 50 milliseconds, the needs of practical operation can be met completely.
In one embodiment, in order to improve light transmission and it is opaque between contrast, in polymer dispersed liquid crystal layer also
It is mixed into dichroic dye, makes polymeric matrix that there is controllable absorption and reflection.Polymer dispersed liquid crystal layer can pass through water
Glue or a kind of OCA (Optically Clear Adhesive, extraordinary adhesive for cementing transparent optical element) fittings
Technique fits together with light source unit 3, is transparent or non-transparent state so as to control display module.
It please refers to Fig.1 and Fig. 6 is further additionally provided with touch control unit 5, touch-control list between light source unit 3 and protective layer 4
Member 5 includes the touch control unit substrate 51 made of translucent material, the touch control unit the set on a surface of touch control unit substrate 51
One electrode 52 and touch control unit second electrode 53 set on another surface of touch control unit substrate 51.
In one embodiment, one group of electrode is laterally in touch control unit first electrode 52 and touch control unit second electrode 53
Electrode, another group of electrode is longitudinal electrode, and two arrays of electrodes mutually forms capacitance, this two arrays of electrodes has respectively constituted the two of capacitance
Pole, this mode are alternatively referred to as mutual capacitance screen.Preferably, touch control unit first electrode 52 is driving electrodes, touch control unit second
Electrode 53 is induction electrode, and mutual capacitance screen sends out driving electrodes pulse by drive control device, and receiving terminal is responsible for receiving electrode signal.
When the finger of user touches capacitance plate, affect coupling of the touch point nearby between two electrodes, to change this two
Capacitance between a electrode.The electrode pulse signal that receiving electrode is received at this time changes, when detecting mutual capacitance size,
Lateral electrode sends out pumping signal successively, and longitudinal all electrodes receive signal simultaneously, can obtain all laterally electricity in this way
The capacitance size of pole and longitudinal electrode joint, i.e., the capacitance size of the two dimensional surface of entire touch screen.Since human body carries
Charge can cause localized capacitance amount to reduce, according to touch screen capacitance change data, can calculate when human finger is close
Touch point on touch screen (such as is projected to X-axis and Y direction, then respectively in X by the coordinate for going out each touch point respectively
Axis and Y direction calculate coordinate, finally calculate the coordinate for being combined into touch point).Even if therefore shielding above has multiple touch points
The true coordinate of each touch point can be calculated, and the operation of driver can be controlled with this.
In one embodiment, the quantity of touch control unit second electrode 53 is multiple, in touch control unit first electrode 52 also
It is connected with metal mold 56, two neighboring touch control unit first electrode 52 is additionally provided with insulating layer 57, so as to touch control unit
One electrode 52 plays a protective role and insulating effect.
The first silicon dioxide layer (SiO is additionally provided between touch control unit first electrode 52 and touch control unit substrate 512) 54, it touches
It is additionally provided with the second silicon dioxide layer 55,54 He of the first silicon dioxide layer between control unit second electrode 53 and touch control unit substrate 51
Second silicon dioxide layer 55 is preferably doped with niobium pentaoxide (Nb2O5), so as to play the role of better touch-control.
It is bonded dimming unit 2 in the side of light source unit 3, while in the other side sticking touch control unit 5 of light source unit 3,
The operation that driver can be then controlled by touch control unit 5, controls so as to the display information to display module,
The transparent feelings of display module can be controlled by adjusting the working condition of polymer dispersed liquid crystal layer in dimming unit 2 simultaneously
Condition, so as to realize that unilateral display or bilateral are shown as needed.
The purpose of the present embodiment, which also resides in, provides a kind of display system, including multiple above-mentioned display modules, multiple displays
Module is at array arrangement.
A kind of advantageous effect of display system provided in this embodiment includes at least：
(1) due to being provided with dimming unit 2 between basal layer 1 and light source unit 3, when dimming unit 2 is in the first shape
When state, light can not transmit, and when dimming unit 2 is in the second state, light can be transmitted from dimming unit 2, so as to
It is aobvious on the one hand control to control whether light can transmit by controlling the working condition of dimming unit 2
Show that module is unilateral luminous or dual-side emissive, and then it is unilateral luminous or dual-side emissive that can control display system；It is another
Whether aspect can also control display module transparent, and then whether can control display system transparent.
(2) thin film transistor (TFT) uses GaAs semi-conducting material, since GaAs material is transparent material, translucency
Well, the transmission region in the display area so as to increase display module, and then the transparent area of display system can be increased
Domain.
(3) luminescent layer 342 is preferably organic luminous layer, can not need backlight, liquid crystal layer, polaroid, colour with self-luminous
Piece etc. can significantly improve the light transmittance of the structure, while illumination effect is good.
(4) polymer dispersed liquid crystal layer 23 is set in dimming unit 2, since polymer dispersed liquid crystal layer is in the effect of electric field
There is down electric control optical switch characteristic, so as to control its permeability according to the actual needs.
(5) touch control unit 5 is set, the display information of display module can be controlled, and then display system can be controlled
The display information of system.
(6) relatively low to the excitation purity of display, contrast requirement, existing OLED technology can meet, so as to
Drive the development of OLED industries.
(7) application range of display system is more extensive, such as billboard, large display screen, light regulating window, meeting, religion
Learning the fields such as Projection Display can use, that is, the display field in living can use, and can also carry out single, double side
Display pattern switches.
Referring to Fig. 7, the purpose of the present embodiment, which also resides in, provides a kind of display system production method, including：
Step S10：Light source unit is set；
Step S20：Dimming unit is set, and light source unit is bonded with dimming unit；
Step S30：Protective layer is bonded with light source unit, and basal layer is bonded with dimming unit.
Referring to Fig. 8, further, step S10 includes：
Step S101：Transistor base is set, light source unit first electrode is set on transistor base；
Step S102：Selfluminous cell is set, hole transmission layer, hair are plated successively on the surface of light source unit first electrode
Photosphere and electron transfer layer；
Step S103：Light source unit second electrode is deposited, light source unit second electrode is plated on the surface of electron transfer layer.
In step S101, transistor base is thin film transistor base plate, when making thin film transistor base plate, using saturating
Semi-conducting material of bright GaAs (GaAs) the material substitution low temperature polycrystalline silicon as thin film transistor (TFT).Light source unit first electrode
Thickness for ito film layer, ito film layer isSo that it is guaranteed that having relatively high light penetration, simultaneity
It can stablize.
After the plated film for completing light source unit first electrode (ito film layer, preferably anode layer), need to ito film layer
Surface carry out smooth processing, to improve the external quantum efficiency of selfluminous cell (being in the present embodiment OLED light emitting unit)
And luminous intensity.
Further, step S102 includes：
It will be placed in the cavity of evaporated device equipped with the transistor base of light source unit first electrode, in the chamber of evaporated device
Evaporating coating is carried out in body；
Evaporation condition is set, and the temperature of cavity is 350 °~410 °, and temperature uniformity is at ± 0.1 DEG C, the vacuum degree of cavity
It is 10-4~10-3Pa, transistor base are 250 millimeters~750 millimeters at a distance from the evaporation source of evaporated device；
Selfluminous cell is deposited, is carried out by the way of mask (MASK) version during vapor deposition, in light source unit the
The surface of one electrode plates hole transmission layer, luminescent layer and electron transfer layer, hole transmission layer, luminescent layer and electron-transport successively
The overall thickness of layer is 3 microns~30 microns, and the uniformity of the thicknesses of layers of selfluminous cell is ± 1~3%.
In one embodiment, the cavity of evaporated device is placed in the transistor base that will be equipped with light source unit first electrode
It needs to clean up transistor base before, to be conducive to that selfluminous cell subsequently is deposited.
Further, in step S103 the evaporation condition of light source unit second electrode is plated on the surface of electron transfer layer
For：It is 350 seconds that coating chamber, which is driven beat, and flow is 100~130Sccm, and argon gas (Ar) flow is 200~220Sccm, vacuum degree
3.0×10-2Pa~5 × 10-2Pa, the light source unit second electrode thicknesses of layers platedTo ultimately form light
Source unit second electrode (preferably cathode layer).
In one embodiment, further include after step S103：
Step S104：Light source unit protective layer is set, in the surface of light source unit second electrode covering light source unit protection
Layer, while coating light source in the surrounding of light source unit first electrode, transistor, selfluminous cell and light source unit second electrode
Cell protection layer effectively extends the service life of selfluminous cell so as to prevent selfluminous cell from being contacted with outside water or oxygen,
So as to ensure that light source unit is with good stability and service life.
After the making for completing light source unit, need to be packaged processing to light source unit again, and by light source unit according to
Pre-set dimension is cut, to obtain multiple small-scale light sources units satisfactory, at array arrangement.
Further, the detailed process of setting dimming unit is in step S20：On the surface of the first basal layer of dimming unit
The first conductive layer of dimming unit (preferably ito film layer) is plated by way of magnetron sputtering, in the second basal layer of dimming unit
Surface the second conductive layer of dimming unit (preferably ito film layer) is plated by way of magnetron sputtering, then according to design ruler
Very little be cut into meets preset requirement, multiple small size dimming units at array arrangement, is made by exactitude position technology
It gap between the second conductive layer of the first conductive layer of dimming unit and dimming unit, will using capillary spontaneous imbibition phenomena at 20 μm or so
Polymerizable mesogenic matrix is placed between the second conductive layer of the first conductive layer of dimming unit and dimming unit, is then used again ultraviolet
(UV) solidification glue is packaged, to obtain the dimming unit made.
Referring to Fig. 9, further, further including between step S20 and step S30：
Step S201：Touch control unit is set, touch control unit first electrode is plated on a surface of touch control unit substrate, is being touched
Another surface of control unit substrate plates touch control unit second electrode；
Step S202：Touch control unit is bonded with light source unit.
In one embodiment, the detailed process of step S201 can be：
Touch control unit first electrode (preferably ito film layer) is plated on a surface of preset touch control unit substrate, together
When on another surface of touch control unit substrate plate touch control unit second electrode (preferably ito film layer), then by yellow light system
Ito film layer is made scheduled layout by journey；
MoAlMo film layers are coated on a surface of touch control unit substrate by magnetron sputtering, it then again will by yellow light processing procedure
MoAlMo film layers make scheduled layout；
Then touch control unit is cut according to pre-set dimension again, to obtain meet preset requirement, arrange at array
Multiple small size touch control units of cloth.
Further, the detailed process of step S30 can be：
Dimming unit is bonded by OCA attaching process or glue attaching process with a surface of light source unit, touch-control list
Member is bonded by OCA attaching process or glue attaching process with another surface of light source unit；
Then dimming unit is bonded with basal layer, and touch control unit is bonded with protective layer, to form basal layer/light modulation list
The structure of member/light source unit/touch control unit/protective layer, overall structure are more secured.
Further, further include after step S30：
Step S40：Test carries out the above-mentioned display system to complete the test of electrical property, appearance etc., reaches
The subsequent steps such as packing box storage are carried out after quality requirement again.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of display module, it is characterised in that：Including
Basal layer is made of clear material；
Dimming unit is set on the basal layer, is controlled for the transmission state to light；
Light source unit is set on the dimming unit, is used for from main light emission；
Protective layer is set on the light source unit.
2. display module as described in claim 1, it is characterised in that：The light source unit includes：
Light source unit substrate, is made of clear material；
Light source unit first electrode is set on the light source unit substrate, is made of clear material；
Transistor is set on the light source unit substrate, is connect with the light source unit first electrode；
Selfluminous cell is set in the light source unit first electrode, for generating light；
Light source unit second electrode is set on the selfluminous cell, is made of clear material.
3. display module as claimed in claim 2, it is characterised in that：The selfluminous cell includes：
Luminescent layer is set between the light source unit first electrode and the light source unit second electrode；
Electron transfer layer is set between the luminescent layer and the light source unit second electrode；
Hole transmission layer is set between the luminescent layer and the light source unit first electrode；
Alternatively,
The selfluminous cell includes：
Luminescent layer is set between the light source unit first electrode and the light source unit second electrode；
Hole transmission layer is set between the luminescent layer and the light source unit second electrode；
Electron transfer layer is set between the luminescent layer and the light source unit first electrode.
4. display module as described in claim 1, it is characterised in that：The dimming unit includes：
The first basal layer of dimming unit, is made of translucent material；
The first conductive layer of dimming unit is set on the first basal layer of the dimming unit；
Polymer dispersed liquid crystal layer is set on the first conductive layer of the dimming unit；
The second conductive layer of dimming unit is set on the polymer dispersed liquid crystal layer；
The second basal layer of dimming unit is set on the second conductive layer of the dimming unit, is made of translucent material.
5. such as Claims 1 to 4 any one of them display module, it is characterised in that：The light source unit and the protective layer
Between be additionally provided with touch control unit, the touch control unit includes：
Touch control unit substrate, is made of translucent material；
Touch control unit first electrode is set to a surface of the touch control unit substrate；
Touch control unit second electrode is set to another surface of the touch control unit substrate.
6. a kind of display system, it is characterised in that：Including multiple Claims 1 to 5 any one of them display modules, Duo Gesuo
Display module is stated into array arrangement.
7. a kind of display system production method, it is characterised in that：Including
Light source unit is set；
Dimming unit is set, and the light source unit is bonded with the dimming unit；
Protective layer is bonded with the light source unit, and basal layer is bonded with the dimming unit.
8. display system production method as claimed in claim 7, it is characterised in that：The setting light source unit step includes：
Transistor base is set, light source unit first electrode is set on transistor base；
Selfluminous cell is set, hole transmission layer, luminescent layer and electricity are plated successively on the surface of the light source unit first electrode
Sub- transport layer；
Light source unit second electrode is deposited.
9. display system production method as claimed in claim 8, it is characterised in that：The setting selfluminous cell step packet
It includes：
It will be placed in the cavity of evaporated device equipped with the transistor base of the light source unit first electrode；
Evaporation condition is set, and the temperature of the cavity is 350 °~410 °, and the vacuum degree of the cavity is 10-4~10-3Pa, it is described
Transistor base is 250 millimeters~750 millimeters at a distance from the evaporation source of the evaporated device；
The selfluminous cell is deposited, the hole transmission layer, institute are plated successively on the surface of the light source unit first electrode
Luminescent layer and the electron transfer layer are stated, the overall thickness of the hole transmission layer, the luminescent layer and the electron transfer layer is 3
Micron~30 microns.
10. display system production method as claimed in claim 7, it is characterised in that：After the setting dimming unit step also
Including：
Touch control unit is set, touch control unit first electrode and touch control unit second are plated respectively on two surfaces of touch control unit substrate
Electrode；
The touch control unit is bonded with the light source unit.
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