CN110634358B - Braille display panel, driving method and preparation method thereof, and Braille display device - Google Patents
Braille display panel, driving method and preparation method thereof, and Braille display device Download PDFInfo
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- CN110634358B CN110634358B CN201910900165.7A CN201910900165A CN110634358B CN 110634358 B CN110634358 B CN 110634358B CN 201910900165 A CN201910900165 A CN 201910900165A CN 110634358 B CN110634358 B CN 110634358B
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- 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
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Abstract
The application discloses a Braille display panel, a driving method and a preparation method thereof and a Braille display device, which are used for determining a Braille display starting position according to a finger shielding area. The braille display panel that this application embodiment provided, braille display panel includes: a substrate base plate on which a plurality of braille display cells are located; the braille display unit includes: the Braille display device comprises a plurality of Braille display subunits and at least one positioning unit arranged at intervals with the Braille display subunits; the positioning unit is used for determining the shielding area of the fingers on the Braille display panel.
Description
Technical Field
The application relates to the technical field of Braille display, in particular to a Braille display panel, a driving method and a preparation method thereof and a Braille display device.
Background
The blind people can only obtain external information through sound and touch due to inherent visual defects, and a plurality of braille display devices are available in the market at present in order to improve the life quality of a plurality of blind people vulnerable groups and improve the culture level of the blind people. However, when the existing braille display device displays braille, the display position of the first braille is fixed, for example, the top lattice position of the braille display panel, and when the blind unfamiliar with the braille display device uses the device, the time for searching the display position of the first braille is invisibly increased.
In conclusion, the Braille display product provided by the prior art cannot change the first Braille display position, so that the blind can read by using the display product difficultly and the use is inconvenient.
Disclosure of Invention
The embodiment of the application provides a Braille display panel, a driving method and a preparation method thereof and a Braille display device, which are used for determining a Braille display starting position according to a finger shielding area.
The braille display panel that this application embodiment provided, braille display panel includes: a substrate base plate on which a plurality of braille display cells are located; the braille display unit includes: the Braille display device comprises a plurality of Braille display subunits and at least one positioning unit arranged at intervals with the Braille display subunits; the positioning unit is used for determining the shielding area of the fingers on the Braille display panel.
The Braille display panel that this application embodiment provided, because the Braille display element includes the positioning element, the positioning element can confirm the region that shelters from of finger at the Braille display panel to according to sheltering from the first Braille display element that the region confirmed the Braille and show, thereby can realize the accurate control to the Braille display position, blind person user need not to look for the home position that the Braille shows, practice thrift blind person user reading time, and reduced blind person user and used the Braille to show the degree of difficulty that the product read, promote blind person user experience.
Optionally, the positioning unit comprises: a first light emitting element and a light sensitive element; the first light emitting part and the photosensitive part do not overlap with each other.
When the blind user needs to read by using the Braille display panel, in the area shielded by the fingers of the blind user, the light emitted by the first light-emitting component is reflected by the fingers of the blind user, the light-sensitive component receives the reflected light, the signal emission of the light-sensitive component is changed, in the area not shielded by the fingers, the light emitted by the first light-emitting component is not reflected to the light-sensitive component, and the signal of the light-sensitive component is not changed. Therefore, the finger shielding area can be positioned by utilizing the first light-emitting component and the photosensitive component.
Optionally, the positioning unit further comprises: a collimating component located over the first light emitting component; the collimating component is a first transparent resin film or an optical lens for emitting collimated light; the first transparent resin film has the same thickness in a region covering the first luminescent part.
The braille display panel that this application embodiment provided owing to set up the collimation part on first luminescent part to can make the light of first luminescent part outgoing be the parallel light outgoing under the effect of collimation part, avoid not reaching photosensitive part by the light that the finger reflects, improve the accuracy that the locating element confirmed to shelter from the region.
Optionally, the positioning unit further comprises: a light focusing member positioned above the photosensitive member; the light-focusing component is a second transparent resin film or a light-focusing lens; the thickness of the second transparent resin film is gradually reduced in a direction in which the second transparent resin film is directed toward the edge of the second transparent resin film perpendicular to the axis of symmetry of the base substrate.
The braille display panel that this application embodiment provided owing to set up the light condensing part on photosensitive part, light condensing part can be with the light gathering of finger reflection for the reflected light obtains the reinforcing, has improved photosensitive part to the identification precision of reflection light.
Optionally, the braille display panel further includes: a first dam between the first light emitting element and the light sensitive element.
The Braille display panel that this application embodiment provided owing to set up first barricade between first light-emitting component and light-sensitive part to can avoid the light that first light-emitting component sent directly to be received by light-sensitive part, avoid causing light-sensitive part misidentification, improve the accuracy that the locating unit confirmed to shelter from the region.
Optionally, the positioning unit further comprises: a planarization layer over the first light emitting element and over the light sensitive element.
According to the Braille display panel provided by the embodiment of the application, the flat layer is arranged on the first light-emitting component and the photosensitive component, so that the flat layer can protect the first light-emitting component and the photosensitive component.
Optionally, the positioning units correspond to the braille display sub-units one to one.
The embodiment of the application provides a driving method of a Braille display panel, which comprises the following steps:
determining an occlusion area of a finger using the positioning unit;
determining a first Braille display unit for displaying Braille according to the shielding area;
and determining the display sequence of each Braille display unit from the first Braille display unit, and displaying the Braille according to the display sequence of each Braille display unit according to the Braille information to be displayed.
According to the driving method of the Braille display panel, the positioning unit is used for determining the shielding area of the finger on the Braille display panel, the first Braille display unit for displaying the Braille is determined according to the shielding area, the display sequence of each Braille display unit is determined, the Braille is displayed from the first Braille display unit according to the Braille information to be displayed, so that a blind user does not need to find the initial position for displaying the Braille, the reading time of the blind user is saved, the difficulty of the blind user in reading the Braille display product is reduced, and the experience of the blind user is improved.
Optionally, determining a first braille display unit for displaying braille according to the shielding region specifically includes:
and determining the Braille display unit corresponding to the shielding area according to the preset corresponding relation between the shielding area and the Braille display unit and the shielding area, and using the Braille display unit as a first Braille display unit for displaying Braille.
The embodiment of the application provides a preparation method of a Braille display panel, which comprises the following steps:
providing a substrate base plate;
forming a Braille display subunit and at least one positioning unit arranged at intervals with the Braille display subunit on the substrate base plate; the positioning unit is used for determining that the fingers are on the Braille display panel.
According to the method for preparing the Braille display panel, due to the fact that the positioning unit is arranged, the positioning unit can determine the shielding area of the finger on the Braille display panel and determine the first Braille display unit displayed by the Braille according to the shielding area, accurate control over the Braille display position can be achieved, a blind user does not need to find the initial position displayed by the Braille, reading time of the blind user is saved, the difficulty of the blind user in reading the Braille display product is reduced, and blind user experience is improved.
Optionally, the forming of at least one positioning unit arranged at an interval with the braille display subunit specifically includes:
providing a first light emitting device and a photosensitive member;
and a first light-emitting component and a photosensitive component are arranged in the area of each positioning unit.
Optionally, after the first light emitting element and the photosensitive element are mounted in the region of each of the positioning units, the method further includes:
forming a collimating component over the first light emitting component and a light focusing component over the light sensitive component;
wherein, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
coating a transparent resin over the first light emitting element and the photosensitive element;
forming a pattern of collimating elements over the first light emitting elements and a pattern of light focusing elements over the light sensitive elements using a patterning process;
or, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
an optical lens for emitting collimated light is arranged above the first light-emitting component;
a condenser lens is disposed over the photosensitive member.
Optionally, after the first light emitting element and the photosensitive element are mounted in the region of each of the positioning units, the method further includes:
applying a planarization layer material over the first luminescent element and the photosensitive element using an inkjet printing process;
and carrying out a curing process on the planarization layer material to form a planarization layer.
Optionally, before forming the braille display sub-unit over the substrate base plate and forming at least one positioning unit spaced apart from the braille display sub-unit, the method further includes:
and forming a pattern of a first retaining wall on the substrate base plate, wherein the first retaining wall is positioned between the first light-emitting component and the photosensitive component.
The Braille display device comprises the Braille display panel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a Braille display panel according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view along AA' of FIG. 1 according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of another Braille display panel provided by the embodiment of the application;
FIG. 4 is a schematic structural diagram of another Braille display panel provided by the embodiment of the application;
FIG. 5 is a schematic structural diagram of another Braille display panel provided by the embodiment of the present application;
FIG. 6 is a schematic structural diagram of another Braille display panel provided by the embodiment of the application;
FIG. 7 is a schematic structural diagram of another Braille display panel provided by the embodiment of the present application;
FIG. 8 is a schematic structural diagram of another Braille display panel provided by the embodiment of the present application;
FIG. 9 is a schematic structural diagram of another Braille display panel provided by the embodiment of the present application;
FIG. 10 is a schematic diagram of a driving method of a Braille display panel according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a method for manufacturing a Braille display panel according to an embodiment of the present application;
fig. 12 is a schematic view of a braille display device according to an embodiment of the present application.
Detailed Description
The embodiment of the present application provides a braille display panel, as shown in fig. 1 and fig. 2, wherein fig. 2 is a cross-sectional view along AA' in fig. 1, the braille display panel includes: a substrate base plate 1 on which a plurality of braille display cells 2 are located; the braille display unit 2 includes: a plurality of braille display sub-units 3, and at least one positioning unit 4 arranged at intervals with the braille display sub-units 3; the positioning unit 4 is used for determining the shielding area of the finger 5 on the Braille display panel.
The Braille display panel that this application embodiment provided, because the Braille display element includes the positioning element, the positioning element can confirm the region that shelters from of finger at the Braille display panel to according to sheltering from the first Braille display element that the region confirmed the Braille and show, thereby can realize the accurate control to the Braille display position, blind person user need not to look for the home position that the Braille shows, practice thrift blind person user reading time, and reduced blind person user and used the Braille to show the degree of difficulty that the product read, promote blind person user experience.
Optionally, in the braille display panel shown in fig. 2 provided in the embodiment of the present application, the positioning unit 4 is located between the braille display sub-units 3.
Optionally, in the braille display panel shown in fig. 2 provided in the embodiment of the present application, the positioning unit 4 includes: a first luminescent part 6 and a photosensitive part 7; the first luminescent part 6 and the photosensitive part 7 do not overlap each other.
When the blind user needs to read by using the Braille display panel, in the area shielded by the fingers of the blind user, the light emitted by the first light-emitting component is reflected by the fingers of the blind user, the light-sensitive component receives the reflected light, the signal emission of the light-sensitive component is changed, in the area not shielded by the fingers, the light emitted by the first light-emitting component is not reflected to the light-sensitive component, and the signal of the light-sensitive component is not changed. Therefore, the finger shielding area can be positioned by utilizing the first light-emitting component and the photosensitive component.
For example, the first light-emitting component can emit light with a preset wavelength, and the photosensitive component is only sensitive to the light with the preset wavelength, that is, the photosensitive component only senses the light which is emitted by the first light-emitting component and reflected by the finger, when the photosensitive component receives the light with the preset wavelength, the light signal can be converted into an electrical signal, so that the electrical signal of the photosensitive component is detected, when the electrical signal of the photosensitive component changes, that is, an area which represents a positioning unit where the photosensitive component is located is shielded by the finger, so that the position of the photosensitive component where the electrical signal changes can be determined as a finger shielding area. And subsequently, according to the photosensitive part with the changed electric signal, the Braille display unit corresponding to the photosensitive part is determined and is used as the first Braille display unit for displaying Braille.
Optionally, the first light emitting component emits infrared light, and the photosensitive component is an infrared photosensitive device.
Optionally, the wavelength range of the infrared light emitted by the first light emitting component is: 5.6 micrometers (mum) to 5.9μm.
Optionally, as shown in fig. 3, the positioning unit 4 further includes: a collimating component 8 is located above said first luminescent component 6.
The braille display panel that this application embodiment provided owing to set up the collimation part on first luminescent part to can make the light of first luminescent part outgoing be the parallel light outgoing under the effect of collimation part, avoid not reaching photosensitive part by the light that the finger reflects, improve the accuracy that the locating element confirmed to shelter from the region.
Optionally, the collimating component is a first transparent resin film or an optical lens that emits collimated light; the first transparent resin film has the same thickness in a region covering the first luminescent part.
The material of the first transparent resin film may be, for example, polyimide, and the optical lens for emitting collimated light may be, for example, a fresnel lens, a collimator lens, or a convex lens.
Optionally, in the braille display panel shown in fig. 3 provided in the embodiment of the present application, the positioning unit 4 further includes: a light focusing member 9 positioned above the photosensitive member 7.
The braille display panel that this application embodiment provided owing to set up the light condensing part on photosensitive part, light condensing part can be with the light gathering of finger reflection for the reflected light obtains the reinforcing, has improved photosensitive part to the identification precision of reflection light.
Optionally, the light-focusing member is a second transparent resin film or a light-focusing lens; the thickness of the second transparent resin film is gradually reduced in a direction in which the second transparent resin film is directed toward the edge of the second transparent resin film perpendicular to the axis of symmetry of the base substrate.
The material of the second transparent resin film may be polyimide.
Optionally, as shown in fig. 4 and 5, the braille display panel provided in the embodiment of the present application further includes: a first dam 10 between the first light emitting part 6 and the photosensitive part 7.
The Braille display panel that this application embodiment provided owing to set up first barricade between first light-emitting component and light-sensitive part to can avoid the light that first light-emitting component sent directly to be received by light-sensitive part, avoid causing light-sensitive part misidentification, improve the accuracy that the locating unit confirmed to shelter from the region.
Optionally, as shown in fig. 6 and 7, the positioning unit 4 further includes: a planarising layer 11 located above said first luminescent member 6 and above said light sensitive member 7. As shown in fig. 6, the planarization layer 11 covers the first luminescent member 6 and the photosensitive member 7. When the positioning unit comprises a collimating component and a light concentrating component, as shown in fig. 7, the planar layer 11 covers the collimating component 8 and the light concentrating component 9.
According to the Braille display panel provided by the embodiment of the application, the flat layer is arranged on the first light-emitting component and the photosensitive component, so that the flat layer can protect the first light-emitting component and the photosensitive component.
Optionally, the material of the planarization layer is an optical resin. Namely, the flat layer is a light-transmitting flat layer, and light passing is not influenced.
Alternatively, as shown in fig. 8, the positioning units 4 correspond to the braille display units 2 one to one.
I.e., the number of the positioning units is the same as the number of the braille display units. In specific implementation, the positioning unit corresponding to the shielding area can be determined, and then the Braille display unit corresponding to the positioning unit is determined, so that the Braille display unit can be used as the first Braille display unit for displaying Braille.
Or, alternatively, as shown in fig. 9, the positioning units 4 correspond to the braille display sub-units 3 one to one.
I.e., the number of the positioning units is the same as the number of the braille display sub-units. In specific implementation, the positioning unit corresponding to the finger coverage area can be determined, and then the Braille display sub-unit corresponding to the positioning unit is determined, so that the Braille display unit where the Braille display sub-unit is located can be used as the first Braille display unit for displaying Braille.
When the positioning unit corresponds to the braille display sub-units one by one, the positioning unit can be arranged between the braille display sub-units, and for the braille display sub-units positioned at the edge of the braille display panel, the positioning unit is arranged at one side of the braille display sub-units facing to the edge of the braille display panel close to the braille display sub-units.
Typically, a standard braille character is composed of an array of dot locations of 3 rows by 2 columns, with the dot location bumps at different locations representing different meanings. Optionally, in the braille display panel shown in fig. 1 provided in the embodiment of the present application, each braille display unit includes 6 braille display sub-units.
Optionally, in the braille display panel shown in fig. 2 to 7 provided in the embodiment of the present application, the display subunit 3 includes a trigger component 12 and a point component 13 located above the trigger component; the trigger components 12 and the point position components 13 are in one-to-one correspondence.
Optionally, in the braille display panel shown in fig. 2 to 7 provided in the embodiment of the present application, the dot position component 13 includes: a deformable layer 14 located over the trigger member 12, and a site key 15 located on the deformable layer.
Optionally, in the braille display panel shown in fig. 2 to 7 provided in the embodiment of the present application, each of the display sub-units further includes a second retaining wall 21. The trigger member 12 and the point position member 13 are located between the adjacent second blocking walls 21. The deformation layer 14 is fixed between the adjacent second retaining walls 21.
Optionally, the material of the deformable layer comprises a photo-deformable material. The corresponding trigger component comprises: a second light emitting part and a third light emitting part not overlapping with the second light emitting part; the second light emitting part and the third light emitting part emit light of different wavelengths.
When the light emitting device is specifically implemented, the deformation layer is in the deformation is generated under the irradiation of the light emitted by the second light emitting component, so that the deformation layer is deformed to drive the point position key to be convex, the point position key can be touched by a blind user, the deformed deformation layer is restored to the original state under the irradiation of the light emitted by the third light emitting component, the point position key is driven to return to the original position, and the point position key is not convex any more and cannot be touched by the blind user.
Optionally, the second light emitting component emits ultraviolet light and the third light emitting component emits visible light. Correspondingly, the deformation layer deforms under the irradiation of ultraviolet light, and the deformed deformation layer restores to the original shape under the irradiation of visible light.
When the second light emitting member emits ultraviolet light, the photo-deformable material may be, for example, a cross-linked liquid crystal polymer material including a photo-responsive group, which may be, for example, azobenzene.
Optionally, the material of the deformation layer comprises a magneto-deformable material, and the respective trigger component is an electromagnetic component. When the variable magnetic field disappears, the deformed deformation layer restores to the original state to drive the point position key to return to the original position, and the point position key is not protruded and cannot be touched by a blind user. The electromagnetic component may be an electromagnet, for example.
Specifically, the trigger part receives a control instruction of Braille information to be displayed so as to enable point position keys at corresponding positions in different Braille display units to be protruded, the surface of the display panel is uneven, and a blind user can read Braille formed by touching the protruded point position keys.
In specific implementation, the trigger component and the positioning unit can be controlled by using the thin film transistor. Optionally, the braille display panel further includes: the light-emitting device comprises a substrate base plate, a first thin film transistor, a second thin film transistor and a thin film transistor, wherein the substrate base plate is provided with a first light-emitting component, the first thin film transistor is positioned on the substrate base plate and electrically connected with the first light-emitting component, the second thin film transistor is positioned on the substrate base plate and electrically connected with the photosensitive component, and the thin film transistor is positioned on the substrate base plate and electrically connected with. The number of the thin film transistors electrically connected to the triggering component can be selected according to actual requirements, for example, when the triggering component includes the second light emitting component and the third light emitting component, the thin film transistors electrically connected to the triggering component include the third thin film transistor and the fourth thin film transistor, and when the triggering component is an electromagnetic component, the thin film transistors electrically connected to the triggering component include the third thin film transistor.
In the braille display panel shown in fig. 2 to 7 provided by the embodiment of the application, the dot key 15 has a spherical protrusion for facilitating touch recognition by a blind user. The material of the dot bond may be an insulating material.
Optionally, the braille display panel according to the embodiment of the present application, as shown in fig. 2 to 7, further includes a cover plate 16.
Optionally, as for the braille display panel shown in fig. 2 to 7 provided by the embodiment of the present application, the cover plate 16 includes a plurality of via holes 17, the via holes 17 correspond to the point position keys 15 one-to-one, and when the deformation layer 14 deforms, the point position keys 15 can pass through the holes under the driving of the deformation layer. As shown in fig. 2 to 5, the deformation layer 14 in the braille display subunit 3 on the right side is deformed so that the dot position key 15 protrudes through the through hole 17 of the cover plate 16, i.e., the highest point of the dot position key 15 is higher than the cover plate 16, so that the blind user can touch the protruding dot position key 15. It should be noted that, when the deformation layer is not deformed or is restored to the original state after being deformed, the point location key does not penetrate through the hole, that is, the blind user can only touch the point location key protruding through the hole.
According to the Braille display panel provided by the embodiment of the application, the substrate base plate and the cover plate can be rigid base plates or flexible base plates. The material of the rigid substrate may be, for example, a glass substrate, a metal sheet; the flexible substrate may be, for example, polyethylene terephthalate, ethylene terephthalate, polyetheretherketone, polystyrene, polycarbonate, polyarylate, polyimide, polyvinyl chloride, polyethylene, textile fibers. The material of the first retaining wall and the second retaining wall may be selected to be the same as that of the black matrix.
Based on the same inventive concept, the embodiment of the present application further provides a driving method of a braille display panel, as shown in fig. 10, the method includes:
s101, determining a blocking area of a finger by using the positioning unit;
s102, determining a first Braille display unit for displaying Braille according to the shielding area;
s103, determining the display sequence of each Braille display unit from the first Braille display unit, and displaying Braille according to the display sequence of each Braille display unit according to Braille information to be displayed.
According to the driving method of the Braille display panel, the positioning unit is used for determining the shielding area of the finger on the Braille display panel, the first Braille display unit for displaying the Braille is determined according to the shielding area, the display sequence of each Braille display unit is determined, the Braille is displayed from the first Braille display unit according to the Braille information to be displayed, so that a blind user does not need to find the initial position for displaying the Braille, the reading time of the blind user is saved, the difficulty of the blind user in reading the Braille display product is reduced, and the experience of the blind user is improved.
When the blind user places fingers on the Braille display panel, the fingers reflect the light emitted by the first light-emitting component to the photosensitive component in the area shielded by the fingers, so that the signal of the photosensitive component changes, and in the area not shielded by the fingers, the light emitted by the first light-emitting component cannot be reflected, the photosensitive component cannot receive the reflected light, and the signal of the photosensitive component cannot change. Optionally, in step S101, determining a finger blocking area by using a positioning unit specifically includes: and establishing two-dimensional coordinates for the Braille display panel, and determining the position coordinates of the photosensitive part with changed signals so as to determine the position coordinates corresponding to the finger shielding area. Therefore, the positioning of the finger shielding area is realized.
Optionally, the step S102 of determining a first braille display unit for displaying braille according to the shielding region specifically includes:
and determining the Braille display unit corresponding to the shielding area according to the preset corresponding relation between the shielding area and the Braille display unit and the shielding area, and using the Braille display unit as a first Braille display unit for displaying Braille.
The preset corresponding relation between the shielding area and the Braille display unit can be the corresponding relation between the position coordinate of the preset shielding area and the Braille display unit, and after the position coordinate corresponding to the finger shielding area is determined, the Braille display unit corresponding to the position coordinate is determined according to the preset shielding area position coordinate.
Based on the same inventive concept, the method for manufacturing the braille display panel provided by the embodiment of the application is as shown in fig. 11, and the method comprises the following steps:
s201, providing a substrate base plate;
s202, forming a Braille display subunit on the substrate and forming at least one positioning unit arranged at intervals with the Braille display subunit; the positioning unit is used for determining that the fingers are on the Braille display panel.
According to the method for preparing the Braille display panel, due to the fact that the positioning unit is arranged, the positioning unit can determine the shielding area of the finger on the Braille display panel and determine the first Braille display unit displayed by the Braille according to the shielding area, accurate control over the Braille display position can be achieved, a blind user does not need to find the initial position displayed by the Braille, reading time of the blind user is saved, the difficulty of the blind user in reading the Braille display product is reduced, and blind user experience is improved.
Optionally, in step S202, forming at least one positioning unit spaced apart from the braille display subunit specifically includes:
s301, providing a first light-emitting device and a photosensitive component;
s302, mounting a first light-emitting component and a photosensitive component in the area of each positioning unit.
Optionally, after the step S2022 of mounting the first light emitting device and the light sensitive component in the area of each of the positioning units, the method further includes:
s303, forming a collimating component above the first light emitting component and a light focusing component above the photosensitive component;
wherein, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
coating a transparent resin over the first light emitting element and the photosensitive element;
forming a pattern of collimating elements over the first light emitting elements and a pattern of light focusing elements over the light sensitive elements using a patterning process;
or, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
an optical lens for emitting collimated light is arranged above the first light-emitting component;
a condenser lens is disposed over the photosensitive member.
Optionally, after the step S302 of mounting the first light emitting device and the photosensitive device in the area of each of the positioning units, the method further includes:
s304, coating a flat layer material on the first light-emitting component and the photosensitive component by adopting an ink-jet printing process;
s305, carrying out a curing process on the planarization layer material to form a planarization layer.
Optionally, before forming the braille display sub-unit over the substrate base plate and forming at least one positioning unit spaced apart from the braille display sub-unit, the method further includes:
and forming a pattern of a first retaining wall on the substrate base plate, wherein the first retaining wall is positioned between the first light-emitting component and the photosensitive component.
Optionally, while forming the pattern of the first retaining wall on the substrate base plate, the method further includes:
and forming a pattern of a second retaining wall on the substrate base plate.
Forming a pattern of a first retaining wall on the substrate base plate and forming a pattern of a second retaining wall on the substrate base plate, specifically comprising:
and coating a black matrix material on the substrate base plate, and forming a pattern of the first retaining wall and a pattern of the second retaining wall by adopting an exposure and development process.
Optionally, step S201 provides a substrate, which specifically includes:
providing a substrate formed with a thin film transistor array, the thin film transistor array comprising: the thin film transistor is electrically connected with the Braille display subunit; wherein. The thin film transistor electrically connected to the positioning unit includes: a first thin film transistor electrically connected to the first light emitting device, and a second thin film transistor electrically connected to the photosensitive member.
Optionally, the forming of the braille display subunit on the substrate in step S202 specifically includes:
s401, arranging a trigger part between the adjacent second retaining walls of the region of each Braille display subunit;
s402, providing a deformation layer, and attaching the deformation layer to the second retaining wall adjacent to the region of each Braille display subunit by using frame sealing glue on the trigger part;
and S403, providing a point position key, and positioning the point position key on the deformation layer.
Optionally, in step S401, a triggering component is disposed between the adjacent second blocking walls in the region of each braille display subunit, which specifically includes:
providing a second light emitting component and a third light emitting component;
transferring and bonding the second light emitting part and the third light emitting part in sequence onto the base substrate.
When the trigger part includes the second light emitting part and the third light emitting part, the thin film transistor electrically connected to the braille display sub-unit includes: a third thin film transistor and a fourth thin film transistor;
and sequentially transferring and bonding the second light-emitting component and the third light-emitting component onto the substrate, specifically comprising:
transferring and electrically connecting the second light emitting part to the third thin film transistor;
the third light emitting part is transferred and electrically connected to the fourth thin film transistor.
Or, optionally, in step S401, a triggering component is disposed between the adjacent second blocking walls in the region of each braille display subunit, which specifically includes:
providing an electromagnetic component;
mounting the electromagnetic component on the substrate base plate.
When the triggering part includes an electromagnetic part, the thin film transistor electrically connected to the braille display sub-unit includes: a third thin film transistor;
mounting the electromagnetic component on the substrate base plate, specifically comprising:
electrically connecting the electromagnetic component with the third thin film transistor.
After the step S202 of forming the braille display sub-unit and the at least one positioning unit spaced apart from the braille display sub-unit on the substrate base plate, the method further includes:
providing a cover plate with a through hole; the through holes correspond to the point position keys one to one, the point position keys penetrate through the holes under the driving of the deformation layer when the deformation layer deforms, and the point position keys do not penetrate through the holes when the deformation layer does not deform;
and aligning the cover plate with a substrate base plate forming the Braille display subunit and the positioning unit.
For example, a pattern of uv-curable adhesive may be formed on the cover plate, and the cover plate may be attached to the base substrate forming the braille display sub-unit and the positioning unit by the uv-curable adhesive.
As shown in fig. 12, the braille display device according to the embodiment of the present application includes the above braille display panel 18 according to the embodiment of the present application.
Optionally, the braille display device further includes: a control unit 19, and an information identifying unit 20; the control unit is electrically connected with the positioning unit and the information identification unit.
The control unit may thus receive information of the positioning unit to determine the occlusion area of the finger.
The information identification unit is used for identifying image information and/or voice information. Optionally, the information identifying unit includes: a camera and/or a microphone.
The control unit can also be electrically connected with the information identification unit and the trigger component respectively. So that the control unit can convert the image information and/or voice information recognized by the information recognition unit into corresponding braille information; the control unit can also receive the information of the positioning unit and confirm the display information corresponding to the Braille information according to the received information of the positioning unit and the arrangement mode of the Braille display units in the Braille display panel, wherein the display information comprises a first Braille display unit for displaying Braille and other Braille display units; the control unit is also used for generating and sending a control instruction for displaying the braille according to the display information, and providing light or an electric field for the corresponding point position component through the trigger component so as to trigger the corresponding point position component to display the braille. The control unit may be implemented by a processor performing logic operations, such as a central processing unit, a field programmable logic array, a digital signal processor, a single chip, dedicated logic circuits, and/or other devices having data processing capabilities and/or program execution capabilities.
To sum up, the braille display panel and the driving method thereof, the braille display device provided by the embodiment of the application, because the braille display unit includes the positioning unit, the positioning unit can determine the shielding area of the finger on the braille display panel, and determine the first braille display unit displayed by the braille according to the shielding area, thereby realizing the accurate control of the braille display position, the blind user does not need to find the initial position displayed by the braille, the reading time of the blind user is saved, the difficulty of the blind user in reading the braille display product is reduced, and the user experience is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (14)
1. A Braille display panel characterized in that the Braille display panel includes: a substrate base plate on which a plurality of braille display cells are located; the braille display unit includes: the Braille display device comprises a plurality of Braille display subunits and at least one positioning unit arranged at intervals with the Braille display subunits; the positioning unit is used for determining a shielding area of a finger on the Braille display panel;
the positioning units correspond to the Braille display units one to one;
the plurality of Braille display units are configured to: and determining a shielding area according to the positioning unit, determining a Braille display unit corresponding to the positioning unit according to the shielding area, using the Braille display unit corresponding to the positioning unit as a first Braille display unit for displaying Braille, and determining the display sequence of each Braille display unit.
2. A braille display panel according to claim 1, characterized in that the positioning unit comprises: a first light emitting element and a light sensitive element; the first light emitting part and the photosensitive part do not overlap with each other.
3. A braille display panel according to claim 2, characterized in that the positioning unit further comprises: a collimating component positioned over the first light emitting component; the collimating component is a first transparent resin film or an optical lens for emitting collimated light; the first transparent resin film has the same thickness in a region covering the first luminescent part.
4. A braille display panel according to claim 2 or 3, characterized in that the positioning unit further comprises: a light focusing member positioned above the photosensitive member; the light-focusing component is a second transparent resin film or a light-focusing lens; the second transparent resin film has a symmetry axis perpendicular to the base substrate, and the thickness of the second transparent resin film is gradually reduced in a direction in which the symmetry axis points to the edge of the second transparent resin film.
5. A braille display panel according to claim 2, characterized in that the braille display panel further comprises: a first dam between the first light emitting element and the light sensitive element.
6. A braille display panel according to claim 2, characterized in that the positioning unit further comprises: a planarization layer over the first light emitting element and over the light sensitive element.
7. A method of driving a braille display panel according to any preceding claim 1-6, characterized in that the method comprises:
determining an occlusion area of a finger using the positioning unit;
determining a first Braille display unit for displaying Braille according to the shielding area;
and determining the display sequence of each Braille display unit from the first Braille display unit, and displaying the Braille according to the display sequence of each Braille display unit according to the Braille information to be displayed.
8. The method according to claim 7, characterized in that the determination of the first braille display unit for braille display according to the obscured area specifically comprises:
and determining the Braille display unit corresponding to the shielding area according to the preset corresponding relation between the shielding area and the Braille display unit and the shielding area, and using the Braille display unit as a first Braille display unit for displaying Braille.
9. A method for preparing a Braille display panel is characterized by comprising the following steps:
providing a substrate base plate;
forming a Braille display subunit and at least one positioning unit arranged at intervals with the Braille display subunit on the substrate base plate; the positioning unit is used for determining a shielding area of a finger on the Braille display panel; the positioning units correspond to the Braille display units one to one; the plurality of Braille display units are configured to: and determining a shielding area according to the positioning unit, determining a Braille display unit corresponding to the positioning unit according to the shielding area, using the Braille display unit corresponding to the positioning unit as a first Braille display unit for displaying Braille, and determining the display sequence of each Braille display unit.
10. The method according to claim 9, wherein the forming of the at least one positioning unit spaced apart from the braille display subunit comprises:
providing a first light emitting device and a photosensitive member;
and a first light-emitting component and a photosensitive component are arranged in the area of each positioning unit.
11. The method of claim 10, wherein after the first light emitting element and the photosensitive element are mounted in the area of each of the positioning units, the method further comprises:
forming a collimating component over the first light emitting component and a light focusing component over the light sensitive component;
wherein, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
coating a transparent resin over the first light emitting element and the photosensitive element;
forming a pattern of collimating elements over the first light emitting elements and a pattern of light focusing elements over the light sensitive elements using a patterning process;
or, forming a collimating component on the first light emitting component and forming a light focusing component on the photosensitive component specifically includes:
an optical lens for emitting collimated light is arranged above the first light-emitting component;
a condenser lens is disposed over the photosensitive member.
12. The method of claim 10, wherein after the first light emitting element and the photosensitive element are mounted in the area of each of the positioning units, the method further comprises:
applying a planarization layer material over the first luminescent element and the photosensitive element using an inkjet printing process;
and carrying out a curing process on the material of the flat layer to form the flat layer.
13. The method of claim 10, wherein prior to forming a braille display sub-unit over the base substrate and forming at least one positioning unit spaced apart from the braille display sub-unit, the method further comprises:
and forming a pattern of a first retaining wall on the substrate base plate, wherein the first retaining wall is positioned between the first light-emitting component and the photosensitive component.
14. A braille display device characterized by comprising the braille display panel according to any one of claims 1 to 6.
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| CN201910900165.7A CN110634358B (en) | 2019-09-23 | 2019-09-23 | Braille display panel, driving method and preparation method thereof, and Braille display device |
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| CN201910900165.7A CN110634358B (en) | 2019-09-23 | 2019-09-23 | Braille display panel, driving method and preparation method thereof, and Braille display device |
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| CN110764648B (en) * | 2019-10-21 | 2024-05-14 | 京东方科技集团股份有限公司 | Braille display panel, manufacturing method and device thereof and display control method |
| CN111857436B (en) * | 2020-07-30 | 2024-05-24 | 业成科技（成都）有限公司 | Backlight source assembly, touch display module, touch display device and touch sensing method |
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