CN105867703B - A kind of frustrated total internal reflection touching device - Google Patents
A kind of frustrated total internal reflection touching device Download PDFInfo
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- CN105867703B CN105867703B CN201610417473.0A CN201610417473A CN105867703B CN 105867703 B CN105867703 B CN 105867703B CN 201610417473 A CN201610417473 A CN 201610417473A CN 105867703 B CN105867703 B CN 105867703B
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- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- General Physics & Mathematics (AREA)
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Abstract
The present invention relates to touch screen technology field more particularly to a kind of frustrated total internal reflection touching devices.Include the transparent body with top and bottom, is equipped with light-emitting tube in one end of the transparent body, the other end of the transparent body is equipped with light receiving tube；It is characterized in that：The bottom surface of the transparent body is provided with and the corresponding incident light adjustment film of the light-emitting tube and emergent light corresponding with light receiving tube adjustment film.Incident light adjustment film and emergent light adjustment membrane volume with micro-structure are small, thickness is small, is combined with the transparent body in bottom surface, easy for installation.
Description
Technical field
The present invention relates to touch screen technology field more particularly to a kind of frustrated total internal reflection touching devices.
Background technology
Application No. is CN 104679346A, date of publication is that the application for a patent for invention on June 3rd, 2015 discloses a kind of base
In the multi-point touch panel of suppressed power internal reflection technique.Touch screen base plate including forming total internal reflection, close to touch screen base plate
Light source is oriented to the leaded light component for forming total internal reflection in touch screen base plate, received through total internal reflection by the light source in non-tactile face
The optical receiver etc. of light.Part is placed in the non-tactile face of touch screen base plate, changes the angle of departure of light source by leaded light component
Degree（Ensure that incidence angle of the light in the touch surface for touching substrate is more than and touches the opposite critical angle with air of substrate）, in touch screen
The other end that the interior formation total internal reflection of substrate propagates to touch screen base plate is detected by an optical receiver.When the touch surface of touch screen base plate
When touch operation occurs, the medium outside touch surface becomes the fat that refractive index is more than panel material from air（Finger）, light exists
Total internal reflection in touch screen base plate is suppressed, and optical receiver detects that light intensity decays, to judge touch surface
Touch operation.The installation site of optical receiver and leaded light component requires very accurate in the technical solution, and installation difficulty is big.And
And any one component shake or position change can all lead to the change of light source launch angle, to influence by complete
Reflection propagates to the light intensity of optical receiver, once installation site inaccuracy easilys lead to form total internal reflection in touch panel
Light intensity it is inadequate.The anti-interference ability for reducing touch screen greatly reduces the touch precision of touch screen.
Invention content
The present invention is based on above-mentioned technical problem provide a kind of installation site required precision to leaded light component and light source compared with
Low frustrated total internal reflection touching device improves the anti-interference of touching device and touches while reducing touching device installation difficulty
Touch precision.
A kind of frustrated total internal reflection touching device includes the transparent body with top and bottom, in the transparent body
One end be equipped with light-emitting tube, the other end of the transparent body is equipped with light receiving tube；It is characterized in that：The transparent body
Bottom surface is provided with and the corresponding incident light adjustment film of the light-emitting tube and emergent light corresponding with the light receiving tube and adjusts
Film.The incident light adjusts film：First light output layer and the first smooth input layer；The first light output layer includes and institute
State transparent body in conjunction with the first substrate and the right-angle prismatic column micro-structure that is arranged in first substrate；Described first
Light input layer includes the second substrate and the convex lens micro-structure that is arranged in second substrate；The micro- knot of right-angle prismatic column
First right-angle surface of structure is bonded with the described first smooth input layer, and the axis of the convex lens micro-structure is perpendicular to first right angle
Face；The right-angle prismatic column micro-structure to enter the light of the first light output layer described through the described first smooth input layer
Total internal reflection in transparent panel.The emergent light adjusts film：The second smooth input layer for being combined with the transparent body and
The the second light output layer combined with the described second smooth input layer；The second smooth input layer includes being combined with the transparent body
First optical input surface and the first light gasing surface combined with the second light output layer, the second light output layer include with
The second optical input surface and the second light gasing surface that the second smooth input layer combines；First light gasing surface makes at least
The light that part forms total internal reflection in the transparent body reaches the second light output layer through first light gasing surface,
And further the emergent light is exported through second light gasing surface and adjust film.The incident light with micro-structure adjusts film
Membrane volume is small, thickness is small with emergent light adjustment, is combined with the transparent body in bottom surface, easy for installation.
Preferably, the convex lens micro-structure is plano-convex mirror microstructure, the crowning of the convex lens micro-structure is described in
Light-emitting tube.
Preferably, the convex lens micro-structure have it is multiple, and at least two in multiple convex lens micro-structures described in
Convex lens micro-structure is different from the height in second substrate.The convex lens micro-structure of different height can correspond to different described
The distance between light-emitting tube and incident light adjustment film and angle, the light that most of light-emitting tube is sent out is adjusted to
Directional light, and the right-angle prismatic column micro-structure is injected with vertical incidence angle, touching device is improved to the light-emitting tube
The receiving degree of installation site and angle.
Preferably, the first smooth input layer includes multiple convex lens layers for being equipped with the convex lens micro-structure, Duo Gesuo
It is different to state height of the convex lens layer in second substrate, the convex lens micro-structure makes each described in the distribution of the convex lens layer
Convex lens micro-structure is not overlapped in the short transverse of second substrate.
Preferably, in multiple convex lens micro-structures, the center thickness of at least two convex lens micro-structures is different.No
The convex lens micro-structure with center thickness corresponds to the distance between the different light-emitting tubes and incident light adjustment film
And angle, the light that most of light-emitting tube is sent out is adjusted to directional light, and described straight with vertical incidence angle injection
Angle triangular prism micro-structure improves receiving degree of the touching device to the light-emitting tube installation site and angle.
Preferably, in multiple convex lens micro-structures, the diameter of at least two convex lens micro-structures is different.It is different straight
The convex lens micro-structure of diameter can correspond to the distance between the different light-emitting tubes and incident light adjustment film and angle
The light that most of light-emitting tube is sent out is adjusted to directional light, and injects the right angle three with vertical incidence angle by degree
Prism microstructures improve receiving degree of the touching device to the light-emitting tube installation site and angle.
Preferably, in multiple convex lens micro-structures, the center thickness of at least two convex lens micro-structures is different, until
The diameter of few two convex lens micro-structures is different.
Preferably, in the same convex lens layer, the center thickness of the convex lens micro-structure in marginal position is less than
The center thickness of the convex lens micro-structure in center.Light hair for the center for adjusting film mounted on incident light
Penetrate pipe, can by light that light-emitting tube is sent out it is more as possible be adjusted to directional light, and described in being injected with vertical incidence angle
Right-angle prismatic column micro-structure improves receiving degree of the touching device to the light-emitting tube installation site and angle.
Preferably, in the same convex lens layer, the diameter of the convex lens micro-structure in marginal position, which is less than, to be in
The diameter of the convex lens micro-structure of center.Light-emitting tube for the center for adjusting film mounted on incident light, energy
It is enough by light that light-emitting tube is sent out it is more as possible be adjusted to directional light, and the right-angle prismatic is injected with vertical incidence angle
Column micro-structure improves receiving degree of the touching device to the light-emitting tube installation site and angle.
Preferably, the first smooth input layer includes interior reflective surface, the interior reflective surface is arranged in second substrate
The inner wall perpendicular to the end face of the transparent body.Increase in the light that the smooth light-emitting tube is sent out and is converted into directional light
Light intensity.
The present invention has the advantages that：
1. incident light adjusts film and emergent light adjustment film is easy for installation；
2. the installation site required precision of light-emitting tube and light receiving tube is low；
3. incident light adjusts film and emergent light adjusts film, the thickness of touching device is reduced.
Description of the drawings
Fig. 1 frustrated total internal reflection touching device structural schematic diagrams.
Fig. 2 incident lights adjust membrane structure diagram.
Fig. 3 emergent light adjusting apparatus structural schematic diagrams.
Wherein, 1- transparent bodies, the top surfaces 11-, the bottom surfaces 12-, 2- light-emitting tubes, 3- light receiving tubes, the adjustment of 4- incident lights
Film, 5- emergent lights adjustment film, the first substrates of 41-, 411- right angle trigonometries prism microstructures, the second substrates of 42-, the micro- knot of 421- convex lens
Structure, the first right-angle surfaces of 4111-, the second smooth input layers of 51-, the second light outputs of 52- layer, the first optical input surfaces of 511-, 512- second
Optical input surface, the second optical input surfaces of 521-, the second light gasing surfaces of 522-, the 422- surface of emissions.
Specific implementation mode
Embodiments of the present invention are described in detail below in conjunction with attached drawing.
Such as Fig. 1, a kind of frustrated total internal reflection touching device includes the transparent body 1 with top surface 11 and bottom surface 12, saturating
One end of bright main body 1 is equipped with light-emitting tube 2, and the other end of transparent body is equipped with light receiving tube 3.The bottom surface 11 of transparent body 1 is set
It is equipped with and the corresponding incident light adjustment film 4 of light-emitting tube 2 and emergent light corresponding with light receiving tube 3 adjustment film 5.
It includes the first light output layer and the first smooth input layer that incident light, which adjusts film 4,.First light output layer include with it is transparent
The first substrate 41 that main body combines and the right-angle prismatic column micro-structure 411 being arranged in the first substrate 41.First smooth input layer
Including the second substrate 42 and the convex lens micro-structure 421 being arranged in the second substrate 42.The of right-angle prismatic column micro-structure 411
One right-angle surface 4111 is bonded with the first smooth input layer.
In second substrate 42 of the first smooth input layer, including it is equipped with two convex lens layers of multiple convex lens micro-structures 421.Two
A convex lens layer is arranged in parallel along the thickness direction of the second substrate so that their height in the second substrate are different.The micro- knot of convex lens
Structure 421 regular can be distributed convex lens layer, can also random distribution, but it must be ensured that each convex lens micro-structure 421 exists
The height of second substrate（Or thickness）Direction is not overlapped.Wherein, convex lens micro-structure 421 can be planoconvex lens micro-structure, protrusion
Facing towards light-emitting tube 3.The axis of convex lens micro-structure 421 is perpendicular to the first right-angle surface 4111 so that part light-emitting tube 3 is sent out
Light be adjusted to be parallel to the light of the axis of convex lens micro-structure 421 after convex lens micro-structure, vertically inject right-angle prismatic
Column micro-structure 411.The inclined-plane and the first light output layer of right-angle prismatic column micro-structure 411 are further rationally designed according to the law of refraction
Angle, through enable to vertically inject right-angle prismatic column micro-structure light enter transparent body through the first light output layer, and
And total internal reflection is formed in transparent body, reach the other end of transparent body.
And the emergent light adjustment film 5 for being installed on the transparent body other end includes：The the second light input combined with transparent body 1
Layer 51 and the second light output layer 52 combined with the second smooth input layer 51.Second smooth input layer 51 includes and 1 knot of transparent body
The first optical input surface 511 closed and the first light gasing surface 512 combined with the second light output layer 52, the second light output layer 52
Including with the second smooth input layer 51（That is the first light gasing surface 513）In conjunction with the second optical input surface 521 and the second light gasing surface
522。
Second smooth input layer 51 is fitted closely using optical cement with transparent body, and the second smooth input layer 51 is preferably with refraction
Rate is more than or equal to the material of transparent panel, rationally designs the first light gasing surface 511 according to the law of refraction and the first light inputs
The angle of the angle in face 511 and the second light gasing surface 522 and the first optical input surface 511, can make at least partially in transparent
The light that total internal reflection is formed in main body reaches the second light output layer 52 through the first light gasing surface 512, and further through second
Light gasing surface 522 exports emergent light and adjusts film 5, and is detected by light receiving tube reception.
The form parameter of convex lens micro-structure 421 on convex lens layer can have Mutiple Choice to obtain with the convex of different focal length
Mirror microstructure can convert the corresponding light that convex lens layer is injected with different angle to directional light.For example, convex lens micro-structure 421
Can have different center thickness or different diameters or there is different center thickness and diameter simultaneously
Size.The arrangement mode for rationally designing the convex lens micro-structure of variously-shaped parameter can reach increase and vertically be penetrated by convex lens layer
Enter the light intensity of right angle trigonometry prism microstructures.
Correspond to the touching device of incident light adjustment center membrane position, same convex lens layer for light-emitting tube to be mounted on
In, the center thickness of the convex lens micro-structure in marginal position is less than the center thickness of the convex lens micro-structure in center；
Or in same convex lens layer, the diameter of the convex lens micro-structure in marginal position is less than the convex lens micro-structure in center
Diameter；Or in same convex lens layer, the center thickness of the convex lens micro-structure in marginal position is less than in center
The center thickness of convex lens micro-structure, meanwhile, the diameter of the convex lens micro-structure in marginal position, which is less than, is in the convex of center
The diameter of mirror microstructure.There can be the same of larger fault-tolerance to the error in mounting position of light-emitting tube ensureing touching device
When, improve the light intensity that internal reflection is formed in transparent body.
Identical material may be used in first substrate 41 and the second substrate 42, to simplify the making work that incident light adjusts film
Skill.The inner wall perpendicular to the end face of transparent body of second substrate 42 is equipped with reflectance coating as reflecting surface 422, can improve photograph
It is mapped in convex lens micro-structure and is converted to the light intensity of directional light.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those of ordinary skill in the art can be in appended power
Profit makes various deformations or amendments in the range of requiring.
Claims (8)
1. a kind of frustrated total internal reflection touching device includes the transparent body with top and bottom, in the transparent body
One end is equipped with light-emitting tube, and the other end of the transparent body is equipped with light receiving tube；It is characterized in that：The bottom of the transparent body
Face is provided with and the corresponding incident light adjustment film of the light-emitting tube and emergent light corresponding with the light receiving tube and adjusts
Film；
The incident light adjusts film：First light output layer and the first smooth input layer；The first light output layer include with
The transparent body in conjunction with the first substrate and the right-angle prismatic column micro-structure that is arranged in first substrate；Described
One smooth input layer includes the second substrate and the convex lens micro-structure that is arranged in second substrate；The right-angle prismatic column is micro-
First right-angle surface of structure is bonded with the described first smooth input layer, and the axis of the convex lens micro-structure is perpendicular to first right angle
Face；The right-angle prismatic column micro-structure to enter the light of the first light output layer described through the described first smooth input layer
Total internal reflection in transparent body；
The emergent light adjusts film：The second smooth input layer for being combined with the transparent body and defeated with second light
Enter the second light output layer of layer combination；The second smooth input layer include the first optical input surface combined with the transparent body,
And the first light gasing surface combined with the second light output layer, the second light output layer include being inputted with second light
The second optical input surface and the second light gasing surface that layer combines；First light gasing surface makes at least partially in described transparent
The light of total internal reflection reaches the second light output layer through first light gasing surface in main body, and further through described
Two light gasing surfaces export the emergent light and adjust film；
The convex lens micro-structure have it is multiple, and in multiple convex lens micro-structures at least two convex lens micro-structures with
Height in second substrate is different；
The first smooth input layer includes multiple convex lens layers for being equipped with the convex lens micro-structure, and multiple convex lens layers are described
Height in second substrate is different, and the convex lens micro-structure makes each convex lens micro-structure in institute in the distribution of the convex lens layer
The short transverse for stating the second substrate is not overlapped.
2. a kind of frustrated total internal reflection touching device according to claim 1, it is characterised in that：The convex lens micro-structure is
Plano-convex mirror microstructure, the crowning of the convex lens micro-structure is towards the light-emitting tube.
3. a kind of frustrated total internal reflection touching device according to claim 1, it is characterised in that：Multiple micro- knots of the convex lens
In structure, the center thickness of at least two convex lens micro-structures is different.
4. a kind of frustrated total internal reflection touching device according to claim 1, it is characterised in that：Multiple micro- knots of the convex lens
In structure, the diameter of at least two convex lens micro-structures is different.
5. a kind of frustrated total internal reflection touching device according to claim 1, it is characterised in that：Multiple micro- knots of the convex lens
In structure, the center thickness of at least two convex lens micro-structures is different, and the diameter of at least two convex lens micro-structures is different.
6. a kind of frustrated total internal reflection touching device according to claim 3 or 5, it is characterised in that：The same convex lens
In layer, the center thickness of the convex lens micro-structure in marginal position is less than the convex lens micro-structure in center
Center thickness.
7. a kind of frustrated total internal reflection touching device according to claim 4 or 5, it is characterised in that：The same convex lens
In layer, the diameter of the convex lens micro-structure in marginal position is less than the straight of the convex lens micro-structure in center
Diameter.
8. a kind of frustrated total internal reflection touching device according to claim 1, it is characterised in that：The first smooth input layer
Including interior reflective surface, the inner wall perpendicular to the end face of the transparent body in second substrate is arranged in the interior reflective surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417473.0A CN105867703B (en) | 2016-06-15 | 2016-06-15 | A kind of frustrated total internal reflection touching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417473.0A CN105867703B (en) | 2016-06-15 | 2016-06-15 | A kind of frustrated total internal reflection touching device |
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| Publication Number | Publication Date |
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| CN105867703A CN105867703A (en) | 2016-08-17 |
| CN105867703B true CN105867703B (en) | 2018-11-09 |
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| CN201610417473.0A Active CN105867703B (en) | 2016-06-15 | 2016-06-15 | A kind of frustrated total internal reflection touching device |
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Citations (5)
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| CN203606813U (en) * | 2013-10-30 | 2014-05-21 | 李娜 | Touch screen based on total-reflection light wave technique and touch display device with touch screen |
| CN203812215U (en) * | 2014-04-18 | 2014-09-03 | 北京丹贝投资有限公司 | Infrared touch screen |
| CN104166484A (en) * | 2014-08-29 | 2014-11-26 | 江苏特思达电子科技股份有限公司 | Optical coupling micro-structure device |
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN205942657U (en) * | 2016-06-15 | 2017-02-08 | 湖州佳格电子科技股份有限公司 | Frustrated total internal reflection touching device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201502607A (en) * | 2013-07-04 | 2015-01-16 | Era Optoelectronics Inc | Structure for guiding light into guide light plate to conduct total internal reflection |
-
2016
- 2016-06-15 CN CN201610417473.0A patent/CN105867703B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203606813U (en) * | 2013-10-30 | 2014-05-21 | 李娜 | Touch screen based on total-reflection light wave technique and touch display device with touch screen |
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN203812215U (en) * | 2014-04-18 | 2014-09-03 | 北京丹贝投资有限公司 | Infrared touch screen |
| CN104166484A (en) * | 2014-08-29 | 2014-11-26 | 江苏特思达电子科技股份有限公司 | Optical coupling micro-structure device |
| CN205942657U (en) * | 2016-06-15 | 2017-02-08 | 湖州佳格电子科技股份有限公司 | Frustrated total internal reflection touching device |
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Denomination of invention: A suppressed total internal reflection touch device Effective date of registration: 20210929 Granted publication date: 20181109 Pledgee: South Taihu New Area sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Pledgor: Jiage Technology (Zhejiang) Co.,Ltd. Registration number: Y2021990000915 |
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