CN109272824A - A kind of braille display panel, braille display device and braille display methods - Google Patents
A kind of braille display panel, braille display device and braille display methods Download PDFInfo
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- CN109272824A CN109272824A CN201811404993.3A CN201811404993A CN109272824A CN 109272824 A CN109272824 A CN 109272824A CN 201811404993 A CN201811404993 A CN 201811404993A CN 109272824 A CN109272824 A CN 109272824A
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- Prior art keywords
- braille
- module
- point
- trigger
- light
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
- G09B21/004—Details of particular tactile cells, e.g. electro-mechanical or mechanical layout
Abstract
The embodiment of the invention discloses a kind of braille display panel, braille display device and braille display methods, wherein, braille display panel includes: the display unit of the multiple array arrangements of first substrate and setting on the first substrate, each display unit includes: multiple trigger modules and multiple point modules, and multiple trigger modules and multiple point modules correspond；Wherein, each trigger module is used to provide light or electric field to corresponding point module, shows braille to trigger corresponding point module.One-to-one trigger module and point module is arranged in technical solution provided in an embodiment of the present invention on substrate, light is provided by trigger module or electric field is independently controlled point module, so that braille shows that the structure of structure is simple, reduce volume, and accurate control has been carried out to braille point.
Description
Technical field
The present embodiments relate to field of display technology, and in particular to a kind of braille display panel, braille display device and
Braille display methods.
Background technique
Blind person can only obtain external information by sound and tactile due to its intrinsic defects of vision.Therefore, blind person into
When row is read, information is usually obtained by touch-control braille.The paper of braille book production on traditional technology can not repeat benefit
With causing the serious wasting of resources.For this purpose, being used to show that the braille of braille shows that structure is come into being.
Through inventor the study found that braille in the related technology shows that structure generallys use mechanical control method, still, this
Kind control mode makes braille display structure, and structure is complicated, and volume is larger, and is not easy to realize the accurate control to braille point.
Summary of the invention
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of braille display panels, braille display device
With braille display methods, the structure that braille shows structure is not only simplified, reduces volume, and essence has been carried out to braille point
Really control.
In a first aspect, the embodiment of the invention provides a kind of braille display panels, comprising: first substrate and setting are described
The display unit of multiple array arrangements on first substrate, each display unit include: multiple trigger modules and multiple point moulds
Block, the multiple trigger module and the multiple point module correspond；
Wherein, each trigger module is used to provide light or electric field to corresponding point module, to trigger corresponding point
Position module shows braille.
Optionally, each trigger module includes: first light source for emitting visible light and for the of emitting ultraviolet light
Two light sources.
Optionally, each point module includes: deformation layer and point key；
Side of the corresponding trigger module far from first substrate is arranged in the deformation layer, in corresponding trigger module
Deformation occurs under the action of the light of transmitting；
Side of the deformation layer far from first substrate is arranged in the point key, for the drive lower convexity in deformation layer.
Optionally, each point module further include: light blocking portion；
The side of corresponding trigger module is arranged in the light blocking portion, to stop to come the adjacent touching of self-corresponding trigger module
Send out the light of module transmitting.
Optionally, the making material of the deformation layer is the crosslinking liquid crystal high polymer material for including photoresponse group.
Optionally, the photoresponse group includes: azobenzene, so that when the trigger module emits ultraviolet light, institute
Stating deformation layer, deformation occurs under the irradiation of ultraviolet light, and when the trigger module emits visible light, the deformation layer is visible
Restore deformation under the irradiation of light.
Optionally, each trigger module is thin film transistor (TFT).
Optionally, each point module includes: first electrode, second electrode, deformation layer and point key；
The first electrode and second electrode same layer setting, and the two sides of the deformation layer, first electrode are set
It is connect with the drain electrode of thin film transistor (TFT), the second electrode ground connection, to be provided by corresponding trigger module to first electrode
Electric signal forms electric field between the first electrode and the second electrode；
The deformation layer is arranged in side of the corresponding trigger module far from the first substrate, and with the first electrode
It is connected with second electrode, for deformation occurs under the action of electric field；
The side of the deformation layer far from the first substrate is arranged in the point key, for the band in the deformation layer
Dynamic lower convexity.
Optionally, each point module further include: passivation dielectric layer；
The deformation layer is arranged in close to the side of the first substrate, for the deformation to be isolated in the passivation dielectric layer
Layer and corresponding thin film transistor (TFT)；
The making material of the passivation dielectric layer includes: phosphorosilicate glass or silicon nitride.
Optionally, the making material of the deformation layer includes: electroactive polymer.
Optionally, further includes: the second substrate of the side of the deformation layer far from the first substrate is set；
The second substrate includes: multiple via holes, and the via hole and the point key correspond, the point key setting
In the via hole, so that the point key runs through the via hole when drive lower convexity of the point key in deformation layer.
Second aspect, the embodiment of the present invention also provide a kind of braille display device, comprising: information identificating unit, control are single
The first and described braille display panel；
The information identificating unit, for identification image information and/or voice messaging；
Described control unit is connect with the information identificating unit and trigger module respectively, the image for will recognize
Information and/or voice messaging are converted to braille information, according to the row of display unit in braille information and the braille display panel
Mode for cloth obtains the corresponding display information of the braille information；It is also used to according to the display information, generates and issues braille and is aobvious
The control instruction shown provides light or electric field to corresponding point module by trigger module, to trigger corresponding point mould
Block shows braille.
Optionally, the information identificating unit includes: camera for obtaining image information and/or for obtaining voice
The microphone of information.
The third aspect, the embodiment of the present invention also provide a kind of braille display methods, are applied in above-mentioned braille display device,
The described method includes:
Identify image information and/or voice messaging；
The image information recognized and/or voice messaging are converted into braille information, shown according to braille information and braille
The arrangement mode of display unit in panel obtains the corresponding display information of the braille information；
According to the display information, the control instruction that braille is shown is generated and issues, by trigger module to corresponding point
Position module provides light or electric field, shows braille to trigger corresponding point module.
Optionally, described to provide light or electric field to corresponding point module by trigger module, it is corresponding to trigger
Point module shows that braille includes:
Light or electric field are provided to point module by trigger module, so that deformation occurs for corresponding point module, with
It triggers corresponding point module and shows braille.
The embodiment of the present invention provides a kind of braille display panel, braille display device and braille display methods, wherein braille
Display panel includes: the display unit of the multiple array arrangements of first substrate and setting on the first substrate, each display unit
It include: multiple trigger modules and multiple point modules, multiple trigger modules and multiple point modules correspond；Wherein, each
Trigger module is used to provide light or electric field to corresponding point module, shows braille to trigger corresponding point module.This
One-to-one trigger module and point module is arranged in the technical solution that inventive embodiments provide on substrate, passes through trigger module
Light is provided or electric field is independently controlled point module, so that braille shows that the structure of structure is simple, reduces volume,
And accurate control is carried out to braille point.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the top view of braille display panel provided in an embodiment of the present invention；
Fig. 2 is the side view of braille display panel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram one of the first structure of braille display device provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram for being crosslinked liquid crystal polymer cis-trans isomerism for including azobenzene；
Fig. 5 is the structural schematic diagram two of the first braille display panel provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram one of second of structure of braille display device provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram two of second of structure of braille display device provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of braille display device provided in an embodiment of the present invention；
Fig. 9 is the flow chart of braille display methods provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Unless otherwise defined, the embodiment of the present invention discloses the technical term used or scientific term should be institute of the present invention
The ordinary meaning that personage in category field with general technical ability is understood." first ", " second " used in the embodiment of the present invention
And similar word is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.
The similar word such as " comprising " or "comprising", which means to occur element or object before the word, to be covered to appear in and arranges behind the word
The element of act perhaps object and its equivalent and be not excluded for other elements or object.The similar word such as " connection " or " connected "
Language is not limited to physics or mechanical connection, but may include electrical connection, either direct or indirect
's."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for the object being described changes
Afterwards, then the relative positional relationship may also correspondingly change.
Embodiment one
The embodiment of the invention provides a kind of braille display panel, Fig. 1 is braille display surface provided in an embodiment of the present invention
The top view of plate, Fig. 2 are the side view of braille display panel provided in an embodiment of the present invention, as depicted in figs. 1 and 2, the present invention
The braille display panel that embodiment provides includes: the aobvious of first substrate 10 and multiple array arrangements for being arranged on first substrate 10
Show unit 20, each display unit includes: multiple trigger modules 30 and multiple point modules 40, multiple trigger modules 30 with it is multiple
Point module 40 corresponds, and each trigger module 30 is used to provide light or electric field to corresponding point module 40, with touching
It sends out point module 40 corresponding and shows braille.
Optionally, first substrate 10 can be rigid substrate or flexible substrate, wherein rigid substrate can be but be not limited to
One of glass, Jin Shu Be piece are a variety of；Flexible substrate can be but be not limited to polyethylene terephthalate, to benzene two
Formic acid glycol ester, polyether-ether-ketone, polystyrene, polycarbonate, poly- aryl acid esters, polyarylate, polyimides, polyvinyl chloride,
One of polyethylene, textile fabric are a variety of.
Optionally, the quantity for the display unit that braille display panel includes be it is multiple, the embodiment of the present invention does not appoint this
What is limited, and Fig. 1 is illustrated for including 6 display units.In addition, point module 40 included by display unit 20
It is arranged in array.Since under normal conditions, the Braille of a standard is made of the dot matrix of 2 × 3 points, pass through different positions
The point protrusion set, indicates different meanings.It is therefore preferred that can enable multiple point modules included by each display unit be in
The column arrangement of three rows two, can enhance the applicability of braille display panel, braille of being more convenient for touches and identifies braille in this way.
It should be noted that multiple trigger modules 30 are corresponded with multiple point modules 40 indicates touching in the present embodiment
Hair module 30 is identical as the quantity of point module 40, and the light or electric field that trigger module 30 provides act only on corresponding point
In module 40.It is understood that each point module 40 is equivalent to a pixel unit.Meanwhile each trigger module is only
Vertical, corresponding point module can be independently controlled, to keep control more fine, and then can more accurately be shown
Show braille.
In the present embodiment, specifically, trigger module 30 receives the control instruction that shows of braille, by control instruction to correspondence
Point module 40 light or electric field are provided.
In addition, in the present embodiment, due to each point module by the way of independent control, thus can be in reasonable model
Enclose the interior volume for reducing region shared by each point module, and then reduce the area in region shared by display unit, due to one it is aobvious
Show therefore the display of the corresponding Braille of unit can make braille display panel show in unit area more
Braille.On the other hand, as reducing region shared by a Braille, then can be to a certain degree
The upper size for reducing braille size of display panels, so that blind person be facilitated to carry and use.
Braille display panel provided in an embodiment of the present invention includes: the multiple battle arrays of first substrate and setting on the first substrate
The display unit of arrangement is arranged, each display unit includes: multiple trigger modules and multiple point modules, multiple trigger modules and more
A point module corresponds；Wherein, each trigger module is used to provide light or electric field to corresponding point module, with touching
It sends out point module corresponding and shows braille.One-to-one triggering is arranged in technical solution provided in an embodiment of the present invention on substrate
Module and point module provide light by trigger module or electric field are independently controlled corresponding point module, be not required to
The mechanical structures such as additional addition motor, gear, spring are wanted, so that not only braille shows the structure and simple process of structure, are subtracted
Volume is lacked, has been carried convenient for blind person, and accurate control has been carried out to braille point, and then can accurately show braille.
As an implementation, each trigger module in the first braille display panel provided in an embodiment of the present invention
30 include: the first light source for emitting visible light and the second light source for emitting ultraviolet light.
Optionally, first light source can be can be light emitting diode (Light Emitting Diode, abbreviation LED),
The light source of Organic Light Emitting Diode (Organic Light-Emitting Diode, abbreviation OLED) or other forms, as long as
Visible light can be issued.
Optionally, second light source can be can be light emitting diode (Light Emitting Diode, abbreviation LED),
The light source of Organic Light Emitting Diode (Organic Light-Emitting Diode, abbreviation OLED) or other forms, as long as
Ultraviolet light can be issued.
Fig. 3 is the structural schematic diagram one of the first structure of braille display device provided in an embodiment of the present invention, such as Fig. 3 institute
Show, each point module 40 in the first braille display panel provided in an embodiment of the present invention includes: deformation layer 41 and point
Key 42.
Specifically, corresponding side of the trigger module 30 far from first substrate 10 is arranged in deformation layer 41, in correspondence
Trigger module 30 emit light under the action of deformation occurs；Deformation layer 41 is arranged in far from first substrate 10 in point key 42
Side, for the drive lower convexity in deformation layer 41.
Optionally, the making material of deformation layer 41 is the crosslinking liquid crystal high polymer material for including photoresponse group.Wherein, it hands over
Connection liquid crystal high polymer material has both the anisotropy of liquid crystal and the elasticity of macromolecule network, and cooperates with and make with excellent molecule
Have the characteristics that there is good synergistic effect between ordered arrangement and molecule with, liquid crystal polymer, when a small amount of molecule outside
When stimulation lower generation arrangement in portion's changes, other liquid crystal molecules can also occur to be orientated change accordingly, therefore change entire liquid crystal
Energy needed for system is seldom, it is only necessary to the energy for changing the Liquid Crystal Molecules Alignment direction of 1mol%, in crosslinking liquid crystal polymer
Middle introducing photoresponse group, can assign its photo-deformable performance, can be caused photochemical reaction using molecule synergistic effect
Molecule structure change be enlarged into macroscopic deformation.It should be noted that the embodiment of the present invention not to the type of liquid crystal polymer not
Make specific limit.
Optionally, photoresponse group includes: azobenzene, so that deformation layer is in purple when trigger module emits ultraviolet light
Deformation occurs under the irradiation of outer light, and when trigger module emits visible light, deformation layer restores deformation under the irradiation of visible light.When
When crosslinking liquid crystal polymer containing azobenzene receives ultraviolet light, the variation of molecularly oriented will further make entire macromolecule
Network generates anisotropic macroscopic deformation.Deformation caused by this phase transformation as liquid crystal system is typically all two-way controllable
's.
Specifically, azobenzene has two kinds of configurations of cis and trans, azobenzene exists under room temperature with anti-configuration, in ultraviolet light
Irradiation under, isomerization reaction occurs for trans- azobenzene, is transformed into cis-azobenzene；Cis-azobenzene configuration is thermodynamically in
Unsteady state can be restored to anti-configuration by the irradiation or heating of visible light.Trans-azobenzene growth club shaped structure, with
Liquid crystal molecule is similar, has stabilized effect to liquid crystal system, and cis-azobenzene is then warp architecture, it is intended to make entire
Orientation disorder occurs for liquid crystal system.
Fig. 4 is the schematic diagram for being crosslinked liquid crystal polymer cis-trans isomerism for including azobenzene, as shown in figure 4, R1 and R2 is liquid
Polycrystalline macromolecule, when issuing ultraviolet light UV using trigger module, the azobenzene in crosslinking liquid crystal polymer in deformation layer is by anti-
Formula configuration is transformed into cis-configuration, and cis-azobenzene is then warp architecture, it is intended to make entire liquid crystal system that orientation occur disorderly
Disorderly, it is acted synergistically using molecule, molecule structure change caused by photochemical reaction can be enlarged into macroscopic deformation, cause deformation layer
Deformation occurs.When not needing deformation layer deformation occurs, it is only necessary to irradiate deformation layer with visible light VIS, it is high to cause crosslinking liquid crystal
Azobenzene in molecule is transformed into anti-configuration by cis-configuration, the club shaped structure because trans-azobenzene configuration is grown up, with liquid crystal
Molecule is similar, has stabilized effect to liquid crystal system, is acted synergistically using molecule, so that playing deformation layer restores deformation.
Optionally, in order to realize the accurate control to braille point, the light for avoiding other touch-control modules from providing influences, figure
5 be the structural schematic diagram two of the first braille display panel provided in an embodiment of the present invention, as shown in figure 5, each point module
40 further include: light blocking portion 43；The side of corresponding trigger module 30 is arranged in light blocking portion 43, to stop to carry out self-corresponding trigger mode
The light of the adjacent trigger module transmitting of block.
Optionally, the making material in light blocking portion 43 and the making material of black matrix are identical, and light blocking portion 43 surrounds trigger module
30。
Specifically, deformation layer 41 can be contacted directly with trigger module 30, direct can not also be contacted with trigger module 30,
Fig. 5 be by deformation layer 41 is not direct contacted with trigger module 30 for be illustrated.
Optionally, in order to enable blind person touch get up it is more convenient, as shown in figure 5, provided in an embodiment of the present invention first
Kind braille display panel further include: the second substrate 50 of side of the deformation layer 41 far from first substrate 10, the second substrate are set
50 include: multiple via holes, and via hole and point key 42 correspond, and point key 42 is arranged in the vias, so that when point key exists
When the drive lower convexity of deformation layer, point key 42 runs through via hole.
It should be noted that point key 42 is not through via hole when deformation layer restores deformation.
Optionally, the second substrate 50 can be rigid substrate or flexible substrate, wherein rigid substrate can be but be not limited to
One of glass, Jin Shu Be piece are a variety of；Flexible substrate can be but be not limited to polyethylene terephthalate, to benzene two
Formic acid glycol ester, polyether-ether-ketone, polystyrene, polycarbonate, poly- aryl acid esters, polyarylate, polyimides, polyvinyl chloride,
One of polyethylene, textile fabric are a variety of.
The working principle of the first braille display panel provided in an embodiment of the present invention is further illustrated below: when point needs
When wanting protrusion, trigger module receives the control instruction that braille is shown, ultraviolet to the offer of corresponding point module by control instruction
Light, the azobenzene in crosslinking liquid crystal polymer in deformation layer is transformed into cis-configuration by anti-configuration, and cis-azobenzene is then
It is warp architecture, it is intended to make entire liquid crystal system that orientation disorder occur, be acted synergistically, photochemical reaction can be drawn using molecule
The molecule structure change risen is enlarged into macroscopic deformation, and causing deformation layer, deformation occurs, to drive point key raised, passes through control
The protrusion of the point key of different location, thus can make display unit show different brailles in each display unit.Work as protrusion
Point key when needing to set back, trigger module receives the control instruction that braille is shown, by control instruction to corresponding point
Position module provides visible light, and the azobenzene in crosslinking liquid crystal polymer in deformation layer is transformed into anti-configuration by cis-configuration,
The club shaped structure because trans-azobenzene configuration is grown up, it is similar to liquid crystal molecule, there is stabilized effect to liquid crystal system, utilizes
Molecule synergistic effect, so that deformation layer restores deformation, so that point key can also set back, so that the surface of display base plate is recessed
Convex injustice is to form braille corresponding thereto, so that blind person, which can touch blind person's display device, carries out readding for text
It reads.
As another embodiment, Fig. 6 is second of structure of braille display device provided in an embodiment of the present invention
Structural schematic diagram one, as shown in fig. 6, each trigger module 30 in second of braille display panel provided in an embodiment of the present invention
For thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT), each point module 40 includes: deformation layer 41, point key
42, first electrode 44 and second electrode 45.
Wherein, thin film transistor (TFT) includes: active layer 31, gate electrode 33 and source-drain electrode 35, each trigger module common gate
Insulating layer 32, interlayer insulating film 34 and flatness layer 36, it should be noted that the thin film transistor (TFT) in the present embodiment can be top-gated
Structure with bottom grating structure, Fig. 6 is illustrated by taking top gate structure as an example, and the embodiment of the present invention is not limited thereto.
Specifically, first electrode 44 and the setting of 45 same layer of second electrode, and the two sides of deformation layer 41, first electrode are set
44 connect with the drain electrode of thin film transistor (TFT), and second electrode 45 is grounded, with by corresponding trigger module 30 to first electrode 44
Electric signal is provided, forms electric field between first electrode 44 and second electrode 45；Deformation layer 41 is arranged in corresponding trigger module
30 sides far from first substrate 10, and connect with first electrode 44 and second electrode 45, for occurring under the action of electric field
Deformation；Side of the deformation layer 41 far from first substrate 10 is arranged in point key 42, for the drive lower convexity in deformation layer 41.
Optionally, the making material of deformation layer 41 includes: electroactive polymer, wherein electroactive polymer
(Electroactive Polymer, abbreviation EAP) refers to the novel intelligent that shapes and sizes change can be generated under electric field action
Material has special electrical property and mechanical performance.
In the present embodiment, when original state, do not apply electric field, there is no deformation for deformation layer, and point key is not raised, blind person
Touch feeling can not be generated when touching, when a field is applied, deformation occurs under electric field action for deformation layer, and then drives point
Key protrusion so that blind person generates touch feeling when touching, and then realizes the Braille reading function of braille display panel.
Specifically, EAP is broadly divided into electron type EAP and ionic EAP two major classes, wherein electron type EAP is in electric field action
Lower Coulomb force induction generates electrostriction effect and piezoelectricity, ferroelectric effect, needs higher driving voltage, electron type EAP master
It to include dielectric elastomer, electrostriction film, ferroelectric polymers, liquid crystal elastic body etc..Ionic EAP is by two electrodes and electricity
Liquid composition is solved, Ion transfer or peptizaiton can allow this kind of material generate incentive action at lower drive voltage,
Response speed is very fast, and ionic EAP mainly includes conducting polymer, ionomer Base Metal composite material, ionomer
Gel and carbon nanotube etc..
It should be noted that when the making material of deformation layer is electron type EAP, then phase in first electrode and second electrode
Repulsive interaction between electrostatic attraction effect between counter charges and the identical charges on same electrode will generate film deformation layer
Pressure, because the elastomer volume size of deformation layer remains unchanged, therefore the contraction in deformation layer on thickness, cause it in area
Elongation on direction, the electric field of vertical direction ensure that the biggish elastic deformation of deformation layer.When deformation layer making material be from
When subtype EAP, when applying electric field to deformation layer, under the action of electric field, the cation meeting bound water molecule of ionic EAP is formed
Hydrated cation, and moved to cathode direction, this motion process forms the barometric gradient of fluid, causes the curved of deformation layer
Song deformation, ensure that the biggish elastic deformation of deformation layer.
Optionally, the length of deformation layer 41 is 50~150 millimeters, and width is 50~150 millimeters, with a thickness of 50~150 millis
Rice.
Optionally, point key 42 can be polytetrafluoroethylene material or silicone elastomer etc., not only high temperature resistant but also
It with high resiliency, can also insulate, the shape of point key can be various shape, determine with specific reference to actual demand, the present invention
Embodiment is not limited in any way this.
Optionally, the making material of first electrode 44 and second electrode 45 can be transparent conductive material, such as indium oxide
Tin, can also for metal or other can conductive material, the embodiment of the present invention is not limited in any way this.
Optionally, first electrode 44 and second electrode 45 can be plane-shape electrode, column or strip shaped electric poles, the present embodiment
It is turned on or off by TFT, control first electrode 44 is conductive or non-conductive, to control whether to be formed in deformation layer two sides
Electric field, when forming electric field, deformation occurs for deformation layer 41, and when not forming electric field, i.e. when TFT is closed, deformation layer 41 restores former
Shape.The embodiment of the present invention is not limited in any way this.
Optionally, Fig. 7 is the structural schematic diagram two of second of structure of braille display device provided in an embodiment of the present invention,
As shown in fig. 7, each point module in second of structure of braille display device provided in an embodiment of the present invention further include: blunt
Change dielectric layer 60, deformation layer 41 is arranged in close to the side of first substrate 10, for 41 He of deformation layer to be isolated in passivation dielectric layer 60
Corresponding thin film transistor (TFT).
Optionally, the making material of passivation dielectric layer 60 includes: phosphorosilicate glass or silicon nitride.
In the present embodiment, 60 purpose of passivation dielectric layer is prevented in TFT in order to which deformation layer is isolated with corresponding TFT
Metal line layer, which is distorted the charged ion in layer, to be influenced, and the influence of TFT leakage current can also be reduced.Since display unit needs
With circuit connection to power to trigger module, the dielectric passivation layer surface depositing temperature in the embodiment of the present invention is low, is hardly damaged
Circuit, and there is good electrical insulating property and light transmittance.
Specifically, passivation dielectric layer 60 is deposited on thin film transistor (TFT) by sputtering technology, it is integrated into thin film transistor (TFT)
One.
Optionally, in order to enable blind person touch get up it is more convenient, as shown in fig. 7, provided in an embodiment of the present invention first
Kind braille display panel further include: the second substrate 50 of side of the deformation layer 41 far from first substrate 10, the second substrate are set
50 include: multiple via holes, and via hole and point key 42 correspond, and point key 42 is arranged in the vias, so that when point key exists
When the drive lower convexity of deformation layer, point key 42 runs through via hole.
It should be noted that point key 42 is not through via hole when deformation layer restores deformation.
Optionally, the second substrate 50 can be rigid substrate or flexible substrate, wherein rigid substrate can be but be not limited to
One of glass, Jin Shu Be piece are a variety of；Flexible substrate can be but be not limited to polyethylene terephthalate, to benzene two
Formic acid glycol ester, polyether-ether-ketone, polystyrene, polycarbonate, poly- aryl acid esters, polyarylate, polyimides, polyvinyl chloride,
One of polyethylene, textile fabric are a variety of.
The working principle of second of braille display panel provided in an embodiment of the present invention is further illustrated below: when point needs
When wanting protrusion, trigger module receives the control instruction that shows of braille, by control instruction into corresponding point module first
Electrode provides electric signal, and since second electrode is grounded, at this point, forming electric field between first electrode and second electrode, deformation layer exists
Deformation occurs under the action of electric field, to drive point key raised, by the point key for controlling different location in each display unit
Protrusion, thus display unit can be made to show different brailles.When the point key of protrusion needs to set back, trigger mode
Block receives the control instruction that braille is shown, the first electrode by control instruction not into corresponding point module provides telecommunications
Number, at this point, electric field is not formed between first electrode and second electrode, so that deformation layer restores deformation, so that point key also can
It sets back, so that the surface irregularity of display base plate to be to form braille corresponding thereto, so that blind person can
Touch the reading that blind person's display device carries out text.
Embodiment two
Inventive concept based on the above embodiment, the embodiment of the present invention also provide a kind of braille display device, and Fig. 8 is this hair
The structural schematic diagram for the braille display device that bright embodiment provides, as shown in figure 8, braille provided in an embodiment of the present invention display dress
Setting includes: braille display panel (not shown) that information identificating unit 100, control unit 200 and embodiment one provide.
Specifically, information identificating unit 100, image information and/or voice messaging, control unit 200 are distinguished for identification
It is connect with the trigger module in information identificating unit 100 and braille display panel, for by the image information recognized and/or language
Message breath is converted to braille information, according to the arrangement mode of display unit in braille information and braille display panel, obtains braille
The corresponding display information of information；It is also used to generate and issue the control instruction that braille is shown according to display information, pass through trigger mode
Block provides light or electric field to corresponding point module, shows braille to trigger corresponding point module.
Optionally, information identificating unit includes: camera for obtaining image information and/or for obtaining voice messaging
Microphone.
Optionally, control unit can be realized by executing the processor of logical operation, such as central processing unit
(Central Processing Unit/Processor, abbreviation CPU), Field Programmable Logic Array (Field
Programmable Gate Array, abbreviation FPGA), digital signal processor (Digital Signal Processing, letter
Claim DSP), single-chip microcontroller (Microcontroller Unit, abbreviation MCU), dedicated logic circuit (Application Specific
Integrated Circui, abbreviation ASIC) etc. the device with data-handling capacity and/or program executive capability.
Optionally, control unit can be set in any position of first substrate, and the embodiment of the present invention does not appoint this
What is limited, and is determined with specific reference to actual demand.
Braille display device provided in an embodiment of the present invention includes: information identificating unit, control unit and braille display surface
Plate, on the one hand, since the braille display device includes: braille display panel described in embodiment one, braille display dress
Point module can be independently controlled by setting, so that point position control is more accurate, and then can more accurately show braille,
And keeping its structure simple, size is smaller, carries convenient for blind person.On the other hand, since the braille display device further includes for knowing
The information identificating unit of other image information and/or voice messaging and for by the image information recognized and/or voice messaging
Braille information is converted to, according to the arrangement mode of display unit in braille information and braille display panel, obtains braille information pair
The display information answered；It is also used to the control instruction that braille is shown be generated and issue, by trigger module to right according to display information
The point module answered provides light or electric field, and to trigger the control unit that corresponding point module shows braille, the present invention is real
Applying braille display device provided by example can also be converted to braille for acquired external information, to keep blind person better
External information is obtained, blind community is read and is not limited solely to the dedicated books of traditional braille or equipment.
Since each point module is by the way of independent control, point key institute occupied area can be reduced in the reasonable scope
On the one hand the area in domain can show more Brailles in unit area for braille display device, on the other hand can be with
The size for reducing braille display device, so that blind person be facilitated to carry and use.
Embodiment three
Inventive concept based on the above embodiment, the embodiment of the present invention also provide a kind of braille display methods, are applied to real
In the braille display device for applying the offer of example two, Fig. 9 is the flow chart of braille display methods provided in an embodiment of the present invention, such as Fig. 9
Shown, braille display methods provided in an embodiment of the present invention includes:
Step S1, image information and/or voice messaging are identified.
Specifically, step S1 obtains image information by camera, and/or obtains voice messaging by microphone.
Step S2, the image information recognized and/or voice messaging are converted into braille information, according to braille information and blind
The arrangement mode of display unit in literary display panel obtains the corresponding display information of braille information.
Optionally, display information is the raised position of each each point module in each display unit, wherein raised position packet
It includes: raised or not raised.
Step S3, according to display information, the control instruction that braille is shown is generated and issues, by trigger module to corresponding
Point module provides light or electric field, shows braille to trigger corresponding point module.
Specifically, light or electric field are provided to corresponding point module by trigger module in step S3, with triggering
Corresponding point module shows that braille specifically includes: light or electric field is provided to point module by trigger module, so that right
Deformation occurs for the point module answered, and shows braille to trigger corresponding point module.
Wherein, braille display methods provided in this embodiment is applied in the braille display device that embodiment two provides,
Realization principle is similar with effect is realized, details are not described herein.
Attached drawing of the embodiment of the present invention is pertained only to the present embodiments relate to the structure arrived, and other structures, which can refer to, usually to be set
Meter.
For clarity, in the attached drawing of embodiment for describing the present invention, the thickness and size of layer or micro-structure
It is amplified.It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
In the absence of conflict, the feature in the embodiment of the present invention, that is, embodiment can be combined with each other new to obtain
Embodiment.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (15)
1. a kind of braille display panel characterized by comprising the multiple battle arrays of first substrate and setting on the first substrate
The display unit of arrangement is arranged, each display unit includes: multiple trigger modules and multiple point modules, the multiple trigger module
It is corresponded with the multiple point module；
Wherein, each trigger module is used to provide light or electric field to corresponding point module, to trigger corresponding point mould
Block shows braille.
2. braille display panel according to claim 1, which is characterized in that each trigger module includes: can for transmitting
Light-exposed first light source and the second light source for emitting ultraviolet light.
3. braille display panel according to claim 2, which is characterized in that each point module includes: deformation layer and point
Position key；
Side of the corresponding trigger module far from first substrate is arranged in the deformation layer, for emitting in corresponding trigger module
Light under the action of deformation occurs；
Side of the deformation layer far from first substrate is arranged in the point key, for the drive lower convexity in deformation layer.
4. braille display panel according to claim 3, which is characterized in that each point module further include: light blocking portion；
The side of corresponding trigger module is arranged in the light blocking portion, to stop to come the adjacent trigger mode of self-corresponding trigger module
The light of block transmitting.
5. braille display panel according to claim 3, which is characterized in that the making material of the deformation layer be include light
Respond the crosslinking liquid crystal high polymer material of group.
6. braille display panel according to claim 5, which is characterized in that the photoresponse group includes: azobenzene, with
So that deformation occurs under the irradiation of ultraviolet light for the deformation layer, when the triggering when the trigger module emits ultraviolet light
When module emits visible light, the deformation layer restores deformation under the irradiation of visible light.
7. braille display panel according to claim 1, which is characterized in that each trigger module is thin film transistor (TFT).
8. braille display panel according to claim 7, which is characterized in that each point module includes: first electrode,
Two electrodes, deformation layer and point key；
The first electrode and second electrode same layer setting, and are arranged in the two sides of the deformation layer, first electrode with it is thin
The drain electrode of film transistor connects, the second electrode ground connection, to provide telecommunications to first electrode by corresponding trigger module
Number, electric field is formed between the first electrode and the second electrode；
The deformation layer is arranged in side of the corresponding trigger module far from the first substrate, and with the first electrode and
Two electrodes connection, for deformation occurs under the action of electric field；
The side of the deformation layer far from the first substrate is arranged in the point key, under the drive of the deformation layer
Protrusion.
9. braille display panel according to claim 8, which is characterized in that each point module further include: dielectric passivation
Layer；
The deformation layer is arranged in close to the side of the first substrate in the passivation dielectric layer, for be isolated the deformation layer and
Corresponding thin film transistor (TFT)；
The making material of the passivation dielectric layer includes: phosphorosilicate glass or silicon nitride.
10. braille display panel according to claim 8, which is characterized in that the making material of the deformation layer includes: electricity
Living polymer.
11. the braille display panel according to claim 4 or 8, which is characterized in that further include: it is arranged in the deformation layer
The second substrate of side far from the first substrate；
The second substrate includes: multiple via holes, and the via hole and the point key correspond, and the point key is arranged in institute
It states in via hole, so that the point key runs through the via hole when drive lower convexity of the point key in deformation layer.
12. a kind of braille display device characterized by comprising information identificating unit, control unit and as claim 1~
11 described in any item braille display panels；
The information identificating unit, for identification image information and/or voice messaging；
Described control unit is connect with the information identificating unit and trigger module respectively, the image information for will recognize
And/or voice messaging is converted to braille information, according to the arrangement side of display unit in braille information and the braille display panel
Formula obtains the corresponding display information of the braille information；It is also used to generate according to the display information and issue what braille was shown
Control instruction provides light or electric field to corresponding point module by trigger module, aobvious to trigger corresponding point module
Show braille.
13. braille display device according to claim 12, which is characterized in that the information identificating unit includes: to be used for
Obtain the camera of image information and/or the microphone for obtaining voice messaging.
14. a kind of braille display methods, which is characterized in that be applied to braille display device as described in claim 12 or 13
In, which comprises
Identify image information and/or voice messaging；
The image information recognized and/or voice messaging are converted into braille information, according to braille information and braille display panel
The arrangement mode of middle display unit obtains the corresponding display information of the braille information；
According to the display information, the control instruction that braille is shown is generated and issues, by trigger module to corresponding point mould
Block provides light or electric field, shows braille to trigger corresponding point module.
15. according to the method for claim 14, which is characterized in that described to be mentioned by trigger module to corresponding point module
For light or electric field, show that braille includes: to trigger corresponding point module
Light or electric field are provided to point module by trigger module, so that deformation occurs for corresponding point module, with triggering
Corresponding point module shows braille.
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| CN201811404993.3A CN109272824A (en) | 2018-11-23 | 2018-11-23 | A kind of braille display panel, braille display device and braille display methods |
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| CN201811404993.3A CN109272824A (en) | 2018-11-23 | 2018-11-23 | A kind of braille display panel, braille display device and braille display methods |
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| CN112967577A (en) * | 2021-03-10 | 2021-06-15 | 中国科学院宁波材料技术与工程研究所 | Image-text display unit and reader for blind people |
| CN115083240A (en) * | 2022-07-27 | 2022-09-20 | 之江实验室 | Static driven braille point display device and method |
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