CN114509910A - Rear-projection touch display screen and projection system - Google Patents
Rear-projection touch display screen and projection system Download PDFInfo
- Publication number
- CN114509910A CN114509910A CN202210102075.5A CN202210102075A CN114509910A CN 114509910 A CN114509910 A CN 114509910A CN 202210102075 A CN202210102075 A CN 202210102075A CN 114509910 A CN114509910 A CN 114509910A
- Authority
- CN
- China
- Prior art keywords
- layer
- projection
- touch
- display screen
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 238000009792 diffusion process Methods 0.000 claims abstract description 31
- 230000008093 supporting effect Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 257
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000005341 toughened glass Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 238000005286 illumination Methods 0.000 description 7
- 230000002452 interceptive effect Effects 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical group O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The invention relates to a rear projection type touch display screen and a projection system, and belongs to the technical field of projection display. This rear-projection touch-control display screen, including projection layer, touch-control layer, base plate layer and the display layer that stacks gradually the setting, wherein: the substrate layer is used for supporting the projection layer, the touch layer and the display layer; the projection layer comprises a diffusion particle layer and a first micro prism layer which are arranged in a stacked mode, and the first micro prism layer is arranged between the diffusion particle layer and the touch layer; the diffusion particle layer is used for receiving light projected to the projection equipment in a back direction and performing diffusion treatment on the received light; the first micro prism layer is used for converging the light rays passing through the diffusion particle layer; the touch layer is used for collecting touch signals and transmitting light rays received by the projection layer to the substrate layer; the display layer comprises a particle light-gathering layer which is used for gathering light rays passing through the substrate layer. The touch display screen can be thinned and frameless, and is suitable for large-size touch display equipment.
Description
Technical Field
The invention relates to the technical field of projection display, in particular to a rear projection type touch display screen and a projection system.
Background
At present, the commercial display and education large screen in the market is basically a complete machine which is realized by adding a touch function based on a TFT-LCD (thin film transistor liquid crystal display) module.
In the related art, the touch function realized based on the capacitive touch screen scheme is limited by the problems of screen size, fitting yield and the like due to the fact that TFT-LCD liquid crystal glass needs to be fully fitted, so that the cost is very high, and the capacitive touch screen scheme is difficult to be widely applied to large-size touch display equipment. In the infrared touch scheme, the infrared touch screen needs to be provided with the grooves, and the four sides of the screen need to be provided with the infrared light bars (the infrared transmitting tubes and the infrared receiving tubes are arranged on the four sides of the screen), so that the frame is large, the whole machine is thicker and heavier, the influence of strong light is large, and the infrared touch scheme is not suitable for large-size touch display equipment.
Through the technical analysis, the existing touch display screen implementation scheme has the defect that the touch display screen is difficult to popularize to large-size touch display equipment.
Disclosure of Invention
The invention provides a rear projection type touch display screen and a projection system, aiming at solving the defect that the existing touch display screen implementation scheme is difficult to popularize to large-size touch display equipment.
In a first aspect, to solve the above technical problem, the present invention provides a rear projection type touch display screen, including a projection layer, a touch layer, a substrate layer, and a display layer, which are sequentially stacked, wherein:
the substrate layer is used for supporting the projection layer, the touch layer and the display layer;
the projection layer comprises a diffusion particle layer and a first micro prism layer which are arranged in a stacked mode, and the first micro prism layer is arranged between the diffusion particle layer and the touch layer; the diffusion particle layer is used for receiving light projected to the projection equipment in a back direction and performing diffusion treatment on the received light; the first micro prism layer is used for converging light rays passing through the diffusion particle layer;
the touch layer is used for collecting touch signals and transmitting light rays received by the projection layer to the substrate layer;
the display layer comprises a particle light-gathering layer, and the particle light-gathering layer is used for gathering light passing through the substrate layer.
The invention has the beneficial effects that: the display layer, the substrate layer, the touch layer and the projection layer which are of the structure are arranged in a stacked mode to form the touch display screen, the back projection is utilized to display pictures, the touch layer is used for collecting touch signals, the touch display screen can be thinned, and ultra-narrow frames or no frames can be achieved, the cost is low, the light transmittance is high, the visual angle is large, and the touch display screen can be popularized to large-size touch projection display equipment.
Further, the touch layer comprises a first conducting layer, an insulating layer and a second conducting layer which are sequentially stacked, the first conducting layer is arranged between the substrate layer and the insulating layer, and the second conducting layer is arranged between the projection layer and the insulating layer.
The beneficial effect who adopts above-mentioned improvement scheme is: the touch layer constructed based on the conducting layer and the insulating layer is simple in structure and low in manufacturing cost, and can realize ultra-narrow frame or no frame of the touch display screen, so that the rear projection type touch display screen has good front display and front touch effects.
Furthermore, the touch layer further comprises a protective layer, and the protective layer is arranged between the second conductive layer and the projection layer.
The beneficial effect who adopts above-mentioned improvement scheme is: and protecting each component of the touch layer by arranging the protective layer.
Further, the first micro-prism layer includes a plurality of micro-prisms extending in a horizontal direction.
The beneficial effect who adopts above-mentioned improvement scheme is: the first micro prism layer with the structure can effectively improve the light illumination, and further improve the display effect of the rear projection type touch display screen.
Furthermore, the display layer also comprises a vanishing layer which is arranged on one side of the particle light-gathering layer back to the substrate layer.
The beneficial effect who adopts above-mentioned improvement scheme is: the light is gathered and the illumination of the light is improved through the particle light gathering layer, and the influence loss of natural light and reflected light on the illumination of the projection light is improved through the shadow eliminating layer, so that the front display effect of the rear projection type touch display screen is improved.
Furthermore, the shadow eliminating layer is a nitrogen oxide composite layer.
The beneficial effect who adopts above-mentioned improvement scheme is: the nitrogen oxide composite layer has good transmission increasing and antireflection performances, so that the influence of natural light and reflected light on the illumination of projection light is effectively improved.
Further, the particle light-gathering layer comprises a second micro prism layer and a nano silver particle layer which are sequentially stacked, and the second micro prism layer is arranged between the substrate layer and the nano silver particle layer.
The beneficial effect who adopts above-mentioned improvement scheme is: the particle light-gathering layer is constructed by utilizing the second micro prism layer and the nano silver particle layer, and the structure is simple and easy to realize.
Further, the second microprism layer includes a plurality of microprisms extending in a vertical direction.
The beneficial effect who adopts above-mentioned improvement scheme is: the second micro prism layer with the structure can further improve the light illumination and improve the display effect of the rear projection type touch display screen
Further, the substrate layer is made of toughened glass or organic glass.
The beneficial effect who adopts above-mentioned improvement scheme is: the tempered glass or the organic glass can provide a good supporting effect for the rear-projection type touch display screen, and the picture display effect of the rear-projection type touch display screen can be guaranteed.
In a second aspect, the present invention provides a projection system comprising a rear projection device and the rear-projection touch display screen of the first aspect, wherein:
the back projection equipment is used for projecting an image to be displayed to the rear projection type touch display screen;
the rear-projection touch display screen is used for displaying an image to be displayed and acquiring a touch signal;
a rear projection device, and is further configured to respond to the touch signal.
Drawings
Fig. 1 is a schematic structural diagram of a rear-projection touch display screen according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a projection system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a projection system according to another embodiment of the present invention.
Detailed Description
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
The following describes a rear projection-based touch display screen according to an embodiment of the present invention with reference to the drawings.
Referring to fig. 1, the invention provides a rear projection type touch display screen, which includes a projection layer 10, a touch layer 20, a substrate layer 30 and a display layer 40, which are sequentially stacked;
a substrate layer 30 for supporting the projection layer 10, the touch layer 20 and the display layer 40;
the projection layer 10 comprises a diffusion particle layer 101 and a first micro-prism layer 102 which are stacked, and the first micro-prism layer 102 is arranged between the diffusion particle layer 101 and the touch layer 20; the diffusion particle layer 101 is used for receiving light projected to the projection equipment in a back direction and performing diffusion treatment on the received light; the first micro prism layer 102 is used for converging light rays passing through the diffusion particle layer 101;
the touch layer 20 is used for collecting touch signals and transmitting light received by the projection layer 10 to the substrate layer 30;
the display layer 40 includes a particle condensing layer 401, and the particle condensing layer 401 is used to condense light passing through the substrate layer 30.
It should be noted that the projection device may be divided into a forward projection device and a backward projection device according to a projection manner, where the backward projection device refers to a projection device installed behind a screen, that is, the backward projection device and the audience are respectively located at two sides of the screen, and at this time, light emitted from the backward projection device is directly emitted from one side of the screen to the screen and is transmitted to the audience at the other side of the screen through the screen.
In this embodiment, the rear projection type touch display screen is formed by stacking the projection layer 10, the touch layer 20, the substrate layer 30 and the display layer 40, light projected by a rear projection device behind the rear projection type touch display screen is received by the diffusion particle layer 101 in the projection layer 10, diffused, transmitted to the first micro prism layer 102, converged, and sequentially transmitted through the touch layer 20 and the substrate layer 30, a touch signal is collected by the touch layer 20 in real time, and the display layer 40 completes front display of a projection picture based on the light input into the rear projection type touch display screen, so as to obtain a touch display structure having both a rear projection display function and a front touch function, the touch display structure does not need to provide an infrared light bar for the display screen or cover a capacitive touch screen to implement the touch function, and can implement thinning of the touch display screen, And the ultra-narrow frame or the frameless frame is low in cost, is not limited by size, and has high light transmittance and large visual angle.
Wherein, the particle light-gathering layer 401 in the display layer 40 has a micro prism layer structure and a particle layer structure, the micro prism layer structure is used for refracting light, reducing the diffusion angle of the light and converging the light, the particle layer structure has high light-transmitting property, reduces the reflection at the interface of the layer structure and is beneficial to the light to pass through.
The diffusion particle layer 101 in the projection layer 10 is a layer formed of diffusion particles (for example, silica particles, calcium carbonate particles, titanium dioxide particles, etc.), and may be formed by fixing a solvent-based UV glue to a substrate prepared in advance through a coating process, and performing hybrid curing using oven drying and ultraviolet radiation of a high-pressure mercury lamp, optionally using a UV diffusion particle layer.
As a possible implementation manner, the touch signal may be a pressure signal generated when a user located in front of the rear projection type touch display screen, that is, located on one side of the display layer 40 presses the touch display screen, and since the display image is generated based on a back projection, the projection device may be placed in a dark room behind the screen, thereby effectively reducing the influence of ambient light on the projection light, and the touch operation of the user located on the front side of the screen does not affect the front display of the projection image, thereby effectively improving the user experience.
Optionally, in an embodiment, as shown in fig. 1, the touch layer 20 includes a first conductive layer 201, an insulating layer 202, and a second conductive layer 203 sequentially stacked, where the first conductive layer 201 is disposed between the substrate layer 30 and the insulating layer 202, and the second conductive layer 203 is disposed between the projection layer 10 and the insulating layer 202.
In this embodiment, the insulating layer 202 is a transparent insulating layer, for example, a transparent insulating layer made of a silicon nitride film is selected, a conductive material is fixed on two sides of the insulating layer 202 by a coating method, and the conductive material is processed by a yellow light process to form a first conductive layer 201 and a second conductive layer 203 in a grid shape, wherein the first conductive layer 201 and the second conductive layer 203 are made of a transparent conductive material so as not to block light, and the conductive material may be a nano silver film, an ITO film, a graphene conductive material, a carbon nanotube conductive material, or the like.
As a possible implementation manner, the touch layer 20 is divided into an edge area and a touch area, where the edge area is a mapping of a BM area (an area where a black edge at the edge of the screen is located) of the rear-projection touch display screen to a plane where the touch layer 20 is located, the touch area is a mapping of an AA area (an area where a display screen in the middle of the screen is located) of the rear-projection touch display screen to a plane where the touch layer 20 is located, the touch area is covered by the touch layer 20, and a sensor is disposed between the first conductive layer 201 and the second conductive layer 203 at a position belonging to the edge area, and the sensor is configured to process a pressure signal collected by the touch layer 20 when a user presses the touch area, so as to determine a touch position.
Optionally, the touch layer 20 further includes a protection layer 204, and the protection layer 204 is disposed between the second conductive layer 203 and the projection layer 10.
The protective layer 204 may be made of organic polymers such as thermoplastic polymer, thermosetting polymer, and UV curable polymer, or inorganic substances such as silicon dioxide, and is used to protect the touch layer 20 from being damaged and to prolong the service life of the touch layer 20.
Optionally, the first micro-prism layer 102 includes a plurality of micro-prisms extending in a horizontal direction.
It should be noted that, a plurality of microprisms of the micro-prism layer are formed by processes such as stamping, spraying, etc., and the plurality of microprisms are arranged along the horizontal direction to form the horizontal micro-prism layer. The diffusion particle layer 101 can diffuse a point light source or a line light source into a uniform surface light source, and can improve light extraction efficiency and light extraction uniformity. The plurality of micro prisms of the first micro prism layer 102 are arranged in the horizontal direction, and the diffusion angle of the light is reduced through the refraction of the light, so that the light is converged, the light energy utilization rate parallel to the propagation direction of the light is improved, and the light illumination is improved.
In this embodiment, referring to the arrow shown in fig. 1, the light emitted from the projection device is directed away from the projection device, and the first micro-prism layer 102 is preferably a horizontal micro-prism layer. Receive the light of projecting apparatus projection dorsad through setting up diffusion particle layer 101 to increase the projection angle that light got into rear-projection formula touch-control display screen through the diffusion, and assemble the processing through the light of horizontal little prism layer through diffusion particle layer 101, promote light illuminance, thereby improve display effect.
Optionally, the display layer 40 further includes a shadow eliminating layer 402, and the shadow eliminating layer 402 is disposed on a side of the particle light-condensing layer 401 facing away from the substrate layer 30.
In this embodiment, the vanishing layer 402 and the particle condensing layer 401 are laminated on the substrate layer 30, wherein the particle condensing layer 401 is used for condensing light and increasing illuminance, so as to reduce illuminance loss when the light passes through the touch layer 20 and the substrate layer 30; the shadow eliminating layer 402 is arranged on the outermost layer of the front surface of the rear projection type touch display screen, has the characteristics of reflection and reflection resistance, and can greatly improve the influence loss of natural light and reflected light on the illumination of projection light, thereby improving the front display effect of the rear projection type touch display screen.
Optionally, the shadow layer 20 is an oxynitride composite layer.
In this embodiment, the shadow layer 20 (oxynitride composite layer) in this embodiment can be freely provided as a single layer structure or a multilayer structure, which is not limited herein. When the shadow eliminating layer 20 has a single-layer structure, it may be formed of at least one of a silicon oxynitride material, a silicon oxide material, a silicon nitride material, and a niobium oxide material, or may be formed of a silicon oxynitride material or a mixed material of phosphorus pentoxide and silicon dioxide.
When the shadow eliminating layer 20 is a composite layer structure, a two-layer structure formed by a niobium pentoxide material and a silicon dioxide material may be adopted, or a three-layer structure formed by a niobium pentoxide material, a silicon dioxide material and a silicon oxynitride material may be adopted. It is understood that the number of structural layers and the specific material of the oxynitride composite layer can be freely set according to actual needs.
Optionally, the particle light-condensing layer 401 includes a second micro prism layer 4011 and a nano silver particle layer 4012, which are sequentially stacked, and the second micro prism layer 4011 is disposed between the substrate layer 30 and the nano silver particle layer 4012.
In this embodiment, the nano-silver particle layer 4012 gathers the fine light path formed by diffusing the light, and transmits the gathered fine light path to the second micro prism layer 4011, and the second micro prism layer 4011 increases the illuminance of the light and transmits the light to the vanishing layer 402. The second micro-prism layer 4011 is a vertical micro-prism layer, and includes a plurality of micro-prisms extending in a vertical direction, and may be formed by embossing, spraying, or other processes. The second micro prism layer 4011 is used for refracting light, reducing the diffusion angle of the light, and converging the light, and the nano silver particle layer 4012 has high light transmission property, reduces the reflection at the interface of the layer structure, and is beneficial to the light to pass through.
Optionally, in an embodiment, the substrate layer 30 is made of tempered glass or organic glass.
In this embodiment, the substrate layer 30 is a supporting member of the rear projection type touch display screen, and is also a film coating carrier of the display layer 40, the touch layer 20, and the projection layer 10, and may be made of a transparent material, for example, AG anti-glare tempered glass, PMMA, PET, or other optical materials may be used to make the substrate layer 30, and the thickness thereof may be made to be 1-10 mm. The size of the substrate layer 30 may be set according to actual projection requirements, and the shape of the substrate layer 30 may also be set according to actual projection requirements.
As shown in fig. 2, a projection system provided in an embodiment of the present invention includes a rear projection device 1 and a rear projection touch display screen 2 as described above, where:
the back projection equipment 1 is used for projecting an image to be displayed to the rear projection type touch display screen 2;
the rear-projection touch display screen 2 is used for displaying an image to be displayed and acquiring a touch signal;
In this embodiment, the rear projection device 1 may be an ultra-short-focus projection device or a medium-long-focus projection device, and is disposed on the rear surface of the rear projection type touch display screen 2 in a hanging and placing manner, and a user uses touch display, writing and other functions on the front surface of the rear projection type touch display screen 2 without blocking the light path of the projection device, so that the projection system has a great experience advantage in application scenes such as commercial display experience, front touch, writing teaching blackboards and the like.
Illustratively, when a user touches the display area of the rear-projection touch display screen 2, the rear-projection touch display screen 2 collects a touch signal generated at a touch position and transmits the touch signal to the rear-projection device 1, and the rear-projection device 1 responds to the touch signal. For example, the touch display screen 2 acquires a touch signal indicating that the display screen is turned off and transmits the touch signal to the rear projection apparatus 1, and the rear projection apparatus 1 then stops projecting the screen in response to the touch signal.
Optionally, in an embodiment, as shown in fig. 3, the method further includes: the interactive device 3 and the cloud server 4;
the interaction device 3 is used for acquiring a voice instruction of a user;
the cloud server 4 is used for generating a control instruction according to the voice instruction of the user; and the rear projection device 1 is also used for responding to control instructions.
The interactive device 3 comprises intelligent hardware interactive components such as a camera component, an array microphone component and a loudspeaker component, the interactive device 3 can be used as one peripheral device or a plurality of peripheral devices to exist simultaneously, the interactive device 3 can be linked and transmitted in a wired or wireless mode to exchange data, and the interactive device has the functions of integrating beam forming, sound orientation, noise suppression, voice awakening, voice recognition, semantic understanding and the like so as to realize intelligent voice interaction.
In this embodiment, the interactive device 3 performs far-field sound pickup by using a built-in array microphone, and compresses and transmits the pickup data back to the DSP of the motherboard of the rear projection device 1 to generate voice data, which is uploaded to the cloud server 4, and a voice algorithm set in the cloud server 4 performs semantic recognition, semantic generalization, voice synthesis (or ASR parsing and converting into text characters) on the voice data and generates a control instruction to control the rear projection device 1, such as play control, projection display control, control of projection function, scene control, conference transcription, music and mass entertainment content resource on demand, so as to achieve far-field voice control effect and interaction, and improve user experience.
According to the rear-projection touch display screen and the projection system, the thickness of the touch display screen can be made to be 1-10 mm, the touch display screen can be thinned and has an ultra-narrow frame or no frame, the advantages of high screen occupation ratio of a full screen, small splicing gap in a splicing screen scene and the like are achieved, good display and touch effects are achieved, the rear-projection touch display screen and the projection system can be widely applied to large-size touch display application scenes, intelligent interaction can be achieved through external interaction equipment, and use experience is improved.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a rear-projection touch-control display screen which characterized in that, includes projection layer, touch-control layer, base plate layer and the display layer that stacks gradually the setting, wherein:
the substrate layer is used for supporting the projection layer, the touch layer and the display layer;
the projection layer comprises a diffusion particle layer and a first micro prism layer which are arranged in a stacked mode, and the first micro prism layer is arranged between the diffusion particle layer and the touch layer; the diffusion particle layer is used for receiving light projected to the projection equipment in a back direction and performing diffusion treatment on the received light; the first micro prism layer is used for converging light rays passing through the diffusion particle layer;
the touch layer is used for collecting touch signals and transmitting light rays received by the projection layer to the substrate layer;
the display layer comprises a particle light-gathering layer, and the particle light-gathering layer is used for gathering light passing through the substrate layer.
2. The rear-projection touch display screen of claim 1, wherein the touch layer comprises a first conductive layer, an insulating layer, and a second conductive layer stacked in this order, the first conductive layer is disposed between the substrate layer and the insulating layer, and the second conductive layer is disposed between the projection layer and the insulating layer.
3. The rear-projection touch display screen of claim 2, wherein the touch layer further comprises a protective layer disposed between the second conductive layer and the projection layer.
4. The rear-projection touch display screen of claim 1, wherein the first micro-prism layer comprises a plurality of micro-prisms extending in a horizontal direction.
5. The rear-projection touch display screen of claim 1, wherein the display layer further comprises a shadow-eliminating layer disposed on a side of the particle light-concentrating layer facing away from the substrate layer.
6. The rear-projection touch display screen of claim 5, wherein the shadow-eliminating layer is an oxynitride composite layer.
7. The rear-projection touch display screen of claim 5, wherein the particle condensing layer comprises a second micro prism layer and a nano-silver particle layer, which are sequentially stacked, and the second micro prism layer is disposed between the substrate layer and the nano-silver particle layer.
8. The rear-projection touch display screen of claim 7, wherein the second micro-prism layer comprises a plurality of micro-prisms extending in a vertical direction.
9. The rear-projection touch display screen of any one of claims 1 to 8, wherein the substrate layer is made of tempered glass or organic glass.
10. A projection system comprising a rear projection device and a rear projected touch display screen of any of claims 1-9, wherein:
the rear projection equipment is used for projecting an image to be displayed to the rear projection type touch display screen;
the rear-projection touch display screen is used for displaying the image to be displayed and acquiring a touch signal;
the rear projection device is also used for responding to the touch signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102075.5A CN114509910A (en) | 2022-01-27 | 2022-01-27 | Rear-projection touch display screen and projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102075.5A CN114509910A (en) | 2022-01-27 | 2022-01-27 | Rear-projection touch display screen and projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114509910A true CN114509910A (en) | 2022-05-17 |
Family
ID=81550320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210102075.5A Pending CN114509910A (en) | 2022-01-27 | 2022-01-27 | Rear-projection touch display screen and projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114509910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220390823A1 (en) * | 2020-02-28 | 2022-12-08 | Appotronics Corporation Limited | Transparent projection screen, and manufacturing method for same |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10307681A (en) * | 1998-03-31 | 1998-11-17 | Semiconductor Energy Lab Co Ltd | Projection type display device |
| KR20060021755A (en) * | 2004-09-04 | 2006-03-08 | 주식회사 엘지화학 | Rear projection screen |
| CN1769930A (en) * | 2004-11-05 | 2006-05-10 | 索尼株式会社 | Fresnel lens sheet, transmission type screen and rear projection type display apparatus |
| JP2007010827A (en) * | 2005-06-29 | 2007-01-18 | Dainippon Printing Co Ltd | Transmission type screen and back projection type display device |
| US20110096394A1 (en) * | 2009-10-28 | 2011-04-28 | Microsoft Corporation | Rear-projection display |
| US20150015799A1 (en) * | 2013-07-15 | 2015-01-15 | National Tsing Hua University | Projection screen and projection system thereof |
| CN105388696A (en) * | 2015-11-24 | 2016-03-09 | 厦门变格新材料科技有限公司 | Metal grid-based touch control type projection display system |
| CN108139513A (en) * | 2015-10-08 | 2018-06-08 | 大日本印刷株式会社 | Optical sheet, screen and display device |
| CN108292090A (en) * | 2015-12-02 | 2018-07-17 | Jxtg能源株式会社 | Reflection-type transparent screen and image projection device with the reflection-type transparent screen |
| CN207663208U (en) * | 2018-01-18 | 2018-07-27 | 上海久壬信息科技有限公司 | Wide viewing angle orients the microprism grating curtain that adds lustre to |
| CN207663207U (en) * | 2018-01-18 | 2018-07-27 | 上海久壬信息科技有限公司 | It is applicable to the microprism grating curtain of strong light environment |
| CN108664170A (en) * | 2018-05-17 | 2018-10-16 | 深圳市零零显示技术有限公司 | A kind of projection display apparatus of touch-control interaction |
| CN109725777A (en) * | 2019-03-21 | 2019-05-07 | 合肥鑫晟光电科技有限公司 | Touch base plate and preparation method thereof, touch control display apparatus |
| CN211086909U (en) * | 2019-11-20 | 2020-07-24 | 深圳光峰科技股份有限公司 | Fresnel membrane and display assembly |
| CN111629287A (en) * | 2020-04-09 | 2020-09-04 | 北京声智科技有限公司 | Projection body module, intelligent sound box, information display method and storage medium |
| US20200387061A1 (en) * | 2017-08-04 | 2020-12-10 | Appotronics Corporation Limited | Total reflection screen and projection system |
| WO2021012701A1 (en) * | 2019-07-23 | 2021-01-28 | Shenzhen GOODIX Technology Co., Ltd. | Brightness enhancement and diffuser films for liquid crystal display assemblies |
| US20220390823A1 (en) * | 2020-02-28 | 2022-12-08 | Appotronics Corporation Limited | Transparent projection screen, and manufacturing method for same |
-
2022
- 2022-01-27 CN CN202210102075.5A patent/CN114509910A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10307681A (en) * | 1998-03-31 | 1998-11-17 | Semiconductor Energy Lab Co Ltd | Projection type display device |
| KR20060021755A (en) * | 2004-09-04 | 2006-03-08 | 주식회사 엘지화학 | Rear projection screen |
| CN1769930A (en) * | 2004-11-05 | 2006-05-10 | 索尼株式会社 | Fresnel lens sheet, transmission type screen and rear projection type display apparatus |
| JP2007010827A (en) * | 2005-06-29 | 2007-01-18 | Dainippon Printing Co Ltd | Transmission type screen and back projection type display device |
| US20110096394A1 (en) * | 2009-10-28 | 2011-04-28 | Microsoft Corporation | Rear-projection display |
| US20150015799A1 (en) * | 2013-07-15 | 2015-01-15 | National Tsing Hua University | Projection screen and projection system thereof |
| CN108139513A (en) * | 2015-10-08 | 2018-06-08 | 大日本印刷株式会社 | Optical sheet, screen and display device |
| CN105388696A (en) * | 2015-11-24 | 2016-03-09 | 厦门变格新材料科技有限公司 | Metal grid-based touch control type projection display system |
| CN108292090A (en) * | 2015-12-02 | 2018-07-17 | Jxtg能源株式会社 | Reflection-type transparent screen and image projection device with the reflection-type transparent screen |
| US20200387061A1 (en) * | 2017-08-04 | 2020-12-10 | Appotronics Corporation Limited | Total reflection screen and projection system |
| CN207663208U (en) * | 2018-01-18 | 2018-07-27 | 上海久壬信息科技有限公司 | Wide viewing angle orients the microprism grating curtain that adds lustre to |
| CN207663207U (en) * | 2018-01-18 | 2018-07-27 | 上海久壬信息科技有限公司 | It is applicable to the microprism grating curtain of strong light environment |
| CN108664170A (en) * | 2018-05-17 | 2018-10-16 | 深圳市零零显示技术有限公司 | A kind of projection display apparatus of touch-control interaction |
| CN109725777A (en) * | 2019-03-21 | 2019-05-07 | 合肥鑫晟光电科技有限公司 | Touch base plate and preparation method thereof, touch control display apparatus |
| WO2021012701A1 (en) * | 2019-07-23 | 2021-01-28 | Shenzhen GOODIX Technology Co., Ltd. | Brightness enhancement and diffuser films for liquid crystal display assemblies |
| CN211086909U (en) * | 2019-11-20 | 2020-07-24 | 深圳光峰科技股份有限公司 | Fresnel membrane and display assembly |
| US20220390823A1 (en) * | 2020-02-28 | 2022-12-08 | Appotronics Corporation Limited | Transparent projection screen, and manufacturing method for same |
| CN111629287A (en) * | 2020-04-09 | 2020-09-04 | 北京声智科技有限公司 | Projection body module, intelligent sound box, information display method and storage medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220390823A1 (en) * | 2020-02-28 | 2022-12-08 | Appotronics Corporation Limited | Transparent projection screen, and manufacturing method for same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110244482B (en) | Display assembly, display screen and electronic equipment | |
| WO2020124306A1 (en) | Liquid crystal display fingerprint module, in-screen fingerprint recognition system, and electronic device | |
| WO2019218733A1 (en) | Optical apparatus for fingerprint recognition, module, device, and system | |
| KR101691248B1 (en) | Illuminator for touch- and object-sensitive display | |
| US11194088B2 (en) | Fill-in light unit, display screen, display apparatus, and terminal | |
| CN105760808B (en) | Imaging plate, image collector and terminal | |
| US10634930B2 (en) | Use of aerial imaging element in teleprompter and teleprompter | |
| CN108875662B (en) | Display panel and display device | |
| JP2003149643A (en) | Front light for liquid crystal display | |
| CN105549265B (en) | A kind of backlight module and liquid crystal display | |
| WO2020192300A1 (en) | Optical collimating assembly, backlight module, and display device | |
| WO2016127442A1 (en) | Backlight module and liquid crystal display device comprising same | |
| CN114509910A (en) | Rear-projection touch display screen and projection system | |
| US10386945B2 (en) | Touch display device | |
| CN104793814A (en) | Optical touch control device and touch control display device | |
| CN203444128U (en) | Prismatic lens, backlight source and display device | |
| CN110502145A (en) | Infrared touch-control screen system based on grating | |
| CN102943985B (en) | A kind of backlight module and display device thereof | |
| WO2017156975A1 (en) | Optical fingerprint sensor module | |
| CN102200864B (en) | Optical touch device | |
| CN102853346B (en) | Backlight module and display device | |
| CN212112505U (en) | Fingerprint identification device | |
| KR100965207B1 (en) | An optical film for back light unit and manufacturing method of an optical film thereof | |
| CN113194175A (en) | Mobile terminal and under-screen camera shooting method of mobile terminal | |
| CN111458934A (en) | Backlight module, passive light-emitting display device, under-screen biological characteristic detection system and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |