CN102654257A - Backlight source structure with sensing function and plate body thereof - Google Patents
Backlight source structure with sensing function and plate body thereof Download PDFInfo
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- CN102654257A CN102654257A CN2011100542270A CN201110054227A CN102654257A CN 102654257 A CN102654257 A CN 102654257A CN 2011100542270 A CN2011100542270 A CN 2011100542270A CN 201110054227 A CN201110054227 A CN 201110054227A CN 102654257 A CN102654257 A CN 102654257A
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Abstract
The invention relates to a backlight source structure with a sensing function. The backlight source structure comprises a plate body, an invisible light source and a light sensation plate; the plate body comprises a transparent plate, a partial reflection layer and a transparent material layer which are combined sequentially; the rear end face of the transparent plate is provided with a plurality of concave-convex structures; the partial reflection layer can partially reflect invisible light, partially pass the invisible light, and pass visible light; the transparent material layer fills and levels up the plurality of concave-convex structures; the invisible light incoming from the side end faces of the plate body can evenly outgo from the front end face of the plate body, and the transparent plate, the partial reflection layer and the transparent material layer have transparent functions on light visible to naked eyes; and one light sensation element of multiple light sensation elements of the light sensation plate, which corresponds to a position of the front end face of the transparent plate which is in touch with an object, is driven in a manner that the light sensation element senses the invisible light which is reflected by the object, so that the position of the transparent plate which is touched by the object is sensed, and then, the sensing function is achieved.
Description
Technical field
The present invention is relevant back light source structure, especially has the back light source structure and the plate body thereof of sensing function.
Background technology
As shown in Figure 1, known backlight 1 comprises 12 compositions of dull and stereotyped 11 and one light source; Dull and stereotyped 11 rear end face 111 a plurality of rules of impression or irregular micro-structurals 112; Inject in dull and stereotyped 11 by a side end face 113 of dull and stereotyped 11 when light 121 that light source 12 sends, can produce scattering after being mapped to micro-structural 112, from dull and stereotyped 11 front end face 114 outgoing, make the light of outgoing reach effect of uniform again.
As shown in Figure 2, known backlight 1 is in order to obtain uniform surface light source, need not consider the problem that light 13 passes flat board 11, is an opaque structure; Because the micro-structural 112 of rear end face 111 can let the luminous ray 13 that passes also produce scattering, the observer in backlight 1 the place ahead can't see the image at dull and stereotyped 11 back sides like this.Traditional backlight 1 does not have sensing function yet.
No. the 200950610th, TaiWan, China publication discloses a kind of flat-panel screens, is to be made up of display panels with touch controllable function and backlight.The backlight of above-mentioned TaiWan, China patent, as known backlight, only provide and inject the required light of display panels, but do not have the function of transparent and sensing with touch controllable function.
Summary of the invention
For known backlight and the plate body thereof of further improvement, and the present invention is proposed.
Main purpose of the present invention is providing a kind of back light source structure and plate body thereof with sensing function, and the rear end face of the transparent panel of this plate body is provided with a plurality of concaveconvex structures; Rear end face coating one deck partially reflecting layer of transparent panel; But partially reflecting layer partial reflection black light, part let black light pass, but can be passed by visible light; The bottom face of partially reflecting layer combines a transparent material layer to fill and lead up a plurality of concaveconvex structures, makes transparent panel, partially reflecting layer and transparent material layer have transparent function for macroscopic light; One photographic plate is against transparent material layer, but object sensing touches the position of the front end face of transparent panel, and reaches sensing function.
Another object of the present invention; A kind of back light source structure and plate body thereof with sensing function is being provided; Above-mentioned photographic plate is one to have the Thin Film Transistor-LCD (TFT-LCD) of photo-sensitive cell, makes the observer in plate body the place ahead can see the image that TFT-LCD shows; And utilize the photo-sensitive cell among the TFT-LCD, but make the plate body sensing finger touch transparent panel front end face the position and with sensing function.
The present invention provides a kind of back light source structure with sensing function, comprising: the light source of a black light; A photographic plate is provided with a plurality of photo-sensitive cells; A plate body; This plate body comprises: a transparent panel has a rear end face, a side end face and a front end face; This rear end face is provided with a plurality of concave-convex micro-structures; One deck partially reflecting layer has the performance that partial reflection black light and part let black light pass and let visible light pass; And transparent material layer layer;
This transparent panel wherein, this partially reflecting layer and this transparent material layer combine in regular turn; This partially reflecting layer also combines this a plurality of concave-convex micro-structures; This transparent material layer is filled and led up a plurality of concave-convex micro-structures of the rear end face of this transparent panel, the refraction angle when passing this partially reflecting layer to lower visible light; This photographic plate is against this transparent material layer; The side end face of contiguous this transparent panel of the light source of this black light;
Wherein, The sightless light that sends when the light source of this black light is during from the side end face incident of this transparent panel; Partial reflection by these a plurality of concave-convex micro-structures and this partially reflecting layer changes direct of travel; And then the front end face outgoing of past this transparent panel, and visible light can pass this transparent material layer, this partially reflecting layer and this transparent panel in regular turn; The front end face that touches this transparent panel as an object stops sightless light; Make sightless light be reflected into this transparent panel; Pass again in a plurality of photo-sensitive cells that this partially reflecting layer and this transparent material layer be incident upon this photographic plate and the corresponding photo-sensitive cell in the position of this object; Which photosensitive elements sense by this photographic plate is driven to stronger sightless light; Can learn object touches which position of this transparent panel, make this back light source structure have sensing function with sensing function.
The present invention also provides a kind of plate body, comprising: a transparent panel has a rear end face, a side end face and a front end face; This rear end face is provided with a plurality of concave-convex micro-structures; One deck partially reflecting layer has the performance that partial reflection black light and part let black light pass and let visible light pass; And transparent material layer layer;
This transparent panel wherein, this partially reflecting layer and this transparent material layer combine in regular turn; This partially reflecting layer also combines this a plurality of concave-convex micro-structures; This transparent material layer is filled and led up a plurality of concave-convex micro-structures of the rear end face of this transparent panel, the refraction angle when passing this partially reflecting layer to lower visible light;
Wherein, The sightless light that sends when the light source of a black light is during from the side end face incident of this transparent panel; Partial reflection by these a plurality of concave-convex micro-structures and this partially reflecting layer changes direct of travel; And then the front end face outgoing of past this transparent panel, and visible light can pass this transparent material layer, this partially reflecting layer and this transparent panel in regular turn; The front end face that touches this transparent panel as an object stops sightless light; Make sightless light be reflected into this transparent panel; Pass again in a plurality of photo-sensitive cells that this partially reflecting layer and this transparent material layer be incident upon a photographic plate and the corresponding photo-sensitive cell in the position of this object; Which photosensitive elements sense by this photographic plate is driven to stronger sightless light, can learn object touches which position of this transparent panel.
Description of drawings
Other purpose of the present invention, effect see also accompanying drawing and embodiment, specify as follows, wherein:
Fig. 1 is the sketch map of known backlight.
Fig. 2 makes the sketch map of the visible light scattering of passing for known backlight.
Fig. 3 touches the schematic appearance that the present invention has the back light source structure of sensing function for finger.
Fig. 4 touches the generalized section that the present invention has the back light source structure of sensing function for finger.
Fig. 5 touches the part amplification profile sketch map that the present invention has the back light source structure of sensing function for finger.
Fig. 6 can pass the generalized section of transparent material layer of the present invention, partially reflecting layer and transparent panel for luminous ray.
The specific embodiment
Like Fig. 3, shown in 4, the present invention has the back light source structure 2 of sensing function, comprises light source 30 and 40 compositions of a photographic plate of a plate body 20, a black light.Plate body 20 comprises a transparent panel 21, one deck partially reflecting layer 22 and 23 composition of transparent material layer layer that combine in regular turn.
As shown in Figure 4, transparent panel 21 has a rear end face 211, a side end face 213 and a front end face 214; Rear end face 211 is provided with a plurality of concave-convex micro-structures 212.The material of partially reflecting layer 22 is general known Coating Materials, has the performance that partial reflection black light and part let black light pass and let visible light pass.One end face of partially reflecting layer 22 combines rear end face 211, comprises to combine a plurality of concave-convex micro-structures 212; The other end of partially reflecting layer 22 combines transparent material layer 23.Partially reflecting layer 22 can the plated film mode combine rear end face 211.Transparent material layer 23 can coating method bound fraction reflecting layer 22.Transparent material layer 23 is filled and led up a plurality of concave-convex micro-structures 212 of the rear end face 211 of transparent panel 21, the refraction angle when passing partially reflecting layer 22 to lower visible light 32, and make the rear end face 211 of transparent panel 21 be a smooth structure.Transparent panel 21 can be flat acrylic block or transparency glass plate.The material of transparent material layer 23 can be and the transparent resin of transparent panel 21 near the identical optical refractive index; For example UV glue (ultraviolet curable resin) or transparent silica gel etc.; The difference of the refractive index of its refractive index and transparent panel 21 is in less than 0.5 scope; For example the refractive index of transparent panel 21 is greater than or less than the refractive index 0.1 of transparent material layer 23, the refraction angle in the time of more lowering light 32 and pass partially reflecting layer 22.
Concave-convex micro-structure 212 can be prism-like, different shape such as pyramidal or coniform; Has reflecting surface facing to the light source 30 of black light; The light 31 of the black light that can the light source 30 of black light be sent reflexes to the front end face 214 of transparent panel 21; By front end face 214 outgoing of transparent panel 21, form the area source of a black light.
As shown in Figure 5; As object 51; For example point the front end face 214 that touches transparent panel 21 and stop sightless light 31; Make sightless light 31 be reflected into transparent panel 21, pass again in a plurality of photo-sensitive cells 41 that partially reflecting layer 22 and transparent material layer 23 be incident upon photographic plate 40 and the corresponding photo-sensitive cell 41 in the position of object 51, and drive the corresponding photo-sensitive cell 41 in position with object 51; By which photo-sensitive cell 41 of photographic plate 40 sense stronger sightless light and driven, can learn object 51 touches which position of transparent panel 21, make plate body 20 have sensing function.
As shown in Figure 6; The macroscopic light 32 of human body can pass transparent material layer 23, partially reflecting layer 22 and transparent panel 21; Make when the observer is positioned at the place ahead of front end face 214; Can also clearly see the image of transparent material layer 23 back, and do not influenced that the observer almost can't see concave-convex micro-structure 212 and partially reflecting layer 22 by concave-convex micro-structure 212 and partially reflecting layer 22.
As shown in Figure 4; The present invention has the back light source structure 2 of sensing function, when making sightless light 31 that the light source 30 of black lights such as infrared light or ultraviolet light sends from side end face 213 incidents of transparent panel 21, and can be by the reflection of a plurality of concave-convex micro-structures 212 and partially reflecting layer 22; Change direct of travel; And then, make the macroscopic light of human body can pass transparent material layer 23, partially reflecting layer 22 and transparent panel 21 simultaneously toward front end face 214 outgoing of transparent panel 21, make when the observer is positioned at the place ahead of front end face 214 of transparent panel 21; Can clearly see the image of transparent material layer 23 back; When therefore the observer is positioned at the place ahead of front end face 214, can clearly see the image that photographic plate 40 shows, for example the image of TFT-LCD demonstration.When object 51 touches the front end face 214 of transparent panel 21; Stopped by object 51 and be reflected into the black light of transparent panel 21; Can pass in a plurality of photo-sensitive cells 41 that partially reflecting layer 22 and transparent material layer 23 be incident upon photographic plate 40 and the corresponding photo-sensitive cell 41 in the position of object 51; Make to sense stronger sightless light with the corresponding photo-sensitive cell 41 in the position of object 51 and driven, but therefore object sensing 51 touches the position of transparent panel 21, and reach sensing function.
The present invention has the back light source structure and the plate body thereof of sensing function; Simple structure; By the black light of the side end face incident of plate body can be uniformly by the front end face outgoing of plate body; And make visible light can pass transparent material layer, partially reflecting layer and transparent panel, make the observer in plate body the place ahead can clearly see the image that photographic plate (TFT-LCD) shows, and utilize the photo-sensitive cell in the photographic plate (TFT-LCD); But make the back light source structure sensing finger object with sensing function touch transparent panel front end face the position and with sensing function, can promote the utility function of backlight.
The above record is merely the embodiment that utilizes technology contents of the present invention, anyly is familiar with modification, variation that this operator uses the present invention to do, in the claim scope that all belongs to the present invention and advocated.
Claims (10)
1. back light source structure with sensing function comprises:
The light source of a black light;
A photographic plate is provided with a plurality of photo-sensitive cells;
A plate body; This plate body comprises:
A transparent panel has a rear end face, a side end face and a front end face; This rear end face is provided with a plurality of concave-convex micro-structures;
One deck partially reflecting layer has the performance that partial reflection black light and part let black light pass and let visible light pass; And
The transparent material layer layer;
This transparent panel wherein, this partially reflecting layer and this transparent material layer combine in regular turn; This partially reflecting layer also combines this a plurality of concave-convex micro-structures; This transparent material layer is filled and led up a plurality of concave-convex micro-structures of the rear end face of this transparent panel, the refraction angle when passing this partially reflecting layer to lower visible light; This photographic plate is against this transparent material layer; The side end face of contiguous this transparent panel of the light source of this black light;
Wherein, The sightless light that sends when the light source of this black light is during from the side end face incident of this transparent panel; Partial reflection by these a plurality of concave-convex micro-structures and this partially reflecting layer changes direct of travel; And then the front end face outgoing of past this transparent panel, and visible light can pass this transparent material layer, this partially reflecting layer and this transparent panel in regular turn; The front end face that touches this transparent panel as an object stops sightless light; Make sightless light be reflected into this transparent panel; Pass again in a plurality of photo-sensitive cells that this partially reflecting layer and this transparent material layer be incident upon this photographic plate and the corresponding photo-sensitive cell in the position of this object; Which photosensitive elements sense by this photographic plate is driven to stronger sightless light; Can learn object touches which position of this transparent panel, make this back light source structure have sensing function with sensing function.
2. the back light source structure with sensing function as claimed in claim 1; Wherein this photographic plate is one to have the Thin Film Transistor-LCD of photo-sensitive cell; Make the observer in this plate body the place ahead can see the image that this Thin Film Transistor-LCD shows; And utilize the photo-sensitive cell of this Thin Film Transistor-LCD, make this plate body object sensing touch the position of this transparent panel.
3. the back light source structure with sensing function as claimed in claim 2, wherein between this transparent material layer and this transparent panel difference of light refractive index in less than 0.5 scope; This transparent panel is a tabular; The material of this transparent material layer be transparent resin or transparent silica gel one of them.
4. the back light source structure with sensing function as claimed in claim 3, wherein this concave-convex micro-structure is prism-like, pyramidal or coniform one of them shape.
5. the back light source structure with sensing function as claimed in claim 4, wherein this transparent panel be acrylic block or transparency glass plate one of them; The material of this transparent material layer is a ultraviolet curable resin; This partially reflecting layer is to combine this rear end face with the plated film mode; This transparent material layer is to combine this partially reflecting layer with coating method; The light source of this black light is the light source of infrared light.
6. plate body comprises:
A transparent panel has a rear end face, a side end face and a front end face; This rear end face is provided with a plurality of concave-convex micro-structures;
One deck partially reflecting layer has the performance that partial reflection black light and part let black light pass and let visible light pass; And
The transparent material layer layer;
This transparent panel wherein, this partially reflecting layer and this transparent material layer combine in regular turn; This partially reflecting layer also combines this a plurality of concave-convex micro-structures; This transparent material layer is filled and led up a plurality of concave-convex micro-structures of the rear end face of this transparent panel, the refraction angle when passing this partially reflecting layer to lower visible light;
Wherein, The sightless light that sends when the light source of a black light is during from the side end face incident of this transparent panel; Partial reflection by these a plurality of concave-convex micro-structures and this partially reflecting layer changes direct of travel; And then the front end face outgoing of past this transparent panel, and visible light can pass this transparent material layer, this partially reflecting layer and this transparent panel in regular turn; The front end face that touches this transparent panel as an object stops sightless light; Make sightless light be reflected into this transparent panel; Pass again in a plurality of photo-sensitive cells that this partially reflecting layer and this transparent material layer be incident upon a photographic plate and the corresponding photo-sensitive cell in the position of this object; Which photosensitive elements sense by this photographic plate is driven to stronger sightless light, can learn object touches which position of this transparent panel.
7. plate body as claimed in claim 6, wherein between this transparent material layer and this transparent panel difference of light refractive index in less than 0.5 scope.
8. plate body as claimed in claim 7, this transparent panel are tabular; The material of this transparent material layer be transparent resin or transparent silica gel one of them.
9. plate body as claimed in claim 8, wherein this concave-convex micro-structure is prism-like, pyramidal or coniform one of them shape.
10. plate body as claimed in claim 9, wherein this transparent panel be acrylic block or transparency glass plate one of them; The material of this transparent material layer is a ultraviolet curable resin; This partially reflecting layer is to combine this rear end face with the plated film mode; This transparent material layer is to combine this partially reflecting layer with coating method; The light source of this black light is the light source of infrared light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100542270A CN102654257A (en) | 2011-03-04 | 2011-03-04 | Backlight source structure with sensing function and plate body thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100542270A CN102654257A (en) | 2011-03-04 | 2011-03-04 | Backlight source structure with sensing function and plate body thereof |
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| CN201247460Y (en) * | 2008-07-30 | 2009-05-27 | 青岛海信电器股份有限公司 | Display device |
| CN101666932A (en) * | 2009-08-24 | 2010-03-10 | 友达光电股份有限公司 | Optical touch display panel |
| WO2010052956A1 (en) * | 2008-11-04 | 2010-05-14 | シャープ株式会社 | Area sensor and display device having area sensor |
| US20100177380A1 (en) * | 2008-12-09 | 2010-07-15 | Sony Corporation | Optical element and method for producing the same |
| US20100277801A1 (en) * | 2005-06-29 | 2010-11-04 | Toshitaka Nakajima | Transparent, wavelength-selective retroreflector |
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2011
- 2011-03-04 CN CN2011100542270A patent/CN102654257A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100277801A1 (en) * | 2005-06-29 | 2010-11-04 | Toshitaka Nakajima | Transparent, wavelength-selective retroreflector |
| CN101231450A (en) * | 2008-02-25 | 2008-07-30 | 陈伟山 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
| CN201247460Y (en) * | 2008-07-30 | 2009-05-27 | 青岛海信电器股份有限公司 | Display device |
| WO2010052956A1 (en) * | 2008-11-04 | 2010-05-14 | シャープ株式会社 | Area sensor and display device having area sensor |
| US20100177380A1 (en) * | 2008-12-09 | 2010-07-15 | Sony Corporation | Optical element and method for producing the same |
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Application publication date: 20120905 |