CN103019471A - Optical touch screen - Google Patents
Optical touch screen Download PDFInfo
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- CN103019471A CN103019471A CN2012105052130A CN201210505213A CN103019471A CN 103019471 A CN103019471 A CN 103019471A CN 2012105052130 A CN2012105052130 A CN 2012105052130A CN 201210505213 A CN201210505213 A CN 201210505213A CN 103019471 A CN103019471 A CN 103019471A
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- reflecting plate
- touch screen
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Abstract
The invention provides an optical touch screen. The optical touch screen comprises an optical reflecting plate, a display screen, a detection control circuit and at least one pair of optical transmitting head and optical receiving head, wherein the optical reflecting plate is arranged above the display screen; the optical transmitting head in each pair is arranged on one side of the optical reflecting plate according to an angle at which incident light can be fully reflected inside the optical reflecting plate; the optical receiving head in each pair is arranged on the opposite side of the optical reflecting plate according to an angle at which the incident light can be received; and the detection control circuit is connected with each pair of optical transmitting head and optical receiving head and is used for detecting light change between each pair of optical transmitting head and optical receiving head. The optical touch screen can achieve more sensitive touch detection and improves the touch experience of a user; anti-jamming anti-dust performance of the optical transmitting head and the optical receiving head is effectively improved; and the service life of the optical touch screen is greatly prolonged.
Description
Technical field
The present invention relates to the touch-screen field, especially, relate to a kind of optical touch screen that adopts light to position.
Background technology
Infrared touch panel is to utilize on X, the Y-direction infrared ray matrix that gathers to detect and the touch of consumer positioning.Infrared touch panel is installed a circuit board housing in the front of display, circuit board arrange on screen four limits one to one infrared emission tube and infrared receiving tube, the corresponding infrared matrix that anyhow intersects that forms.The user is when touch screen, and finger will block anyhow two infrared rays through this position, and the loss that detecting control circuit then can spy out light light changes, and then confirms X-axis and the Y-axis coordinate figure of touch point, judges the touch point in the position of screen.
Yet, only touch the touch point so that ultrared transmission direction departs from the degree of original transmission direction reached the degree that detecting control circuit can identify after (infrared light of infrared emission tube emission only has few part to incide corresponding infrared receiver tube or can not be incident to infrared receiver tube fully), touch action is just identified, this design feature of infrared touch screen has determined to recognize touch action, finger touch to touch-screen current situation necessity more energetically, more fully press, obviously, this touch manner has reduced user's touch experience.In addition, carry out energetically, press completely owing to need to treat the touch area, also can cause each touch larger to the distortion infringement of touch-screen, thus the serviceable life of having reduced touch-screen.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of optical touch screen, when experiencing, the touch that improves the user improves the serviceable life of touch-screen.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of optical touch screen, comprise optical reflecting plate, display screen, detecting control circuit and at least one pair of optical emitting head and optics Receiver, described optical reflecting plate is arranged on the display screen top, wherein, the optical emitting head of every centering can be arranged in the angle that described optical reflection intralamellar part carries out total reflection a side of optical reflecting plate by incident light, the optics Receiver of every centering is arranged on the opposite side relative with a described side of described optical reflecting plate by the angle that can accept described incident ray, described detecting control circuit is connected with the optics Receiver with every pair of optical emitting head, and the light that is used for detecting between every pair of optical emitting head and the optics Receiver changes.
Preferably, the every pair of optical emitting head and optics Receiver all are in same aspect with optical reflecting plate.
Preferably, the top of described optical reflecting plate is provided with upper substrate, the bottom of described upper substrate is evenly equipped with the salient point of lining up array, every pair of corresponding row salient point with the optics Receiver of optical emitting head, the spacing of every row salient point equal light that corresponding optical emitting hair penetrates produces the reflection spot spacing of the exit point that is all-trans at described optical reflection intralamellar part the same face integral multiple.
Preferably, be provided with infrabasal plate between described optical reflecting plate and the display screen, the top of described infrabasal plate is provided with described salient point caves in one to one, and each depression all can be held corresponding salient point.
The invention has the advantages that:
According to the total reflection principle of light in optical reflecting plate optical emitting head and optics Receiver are set; so that touch sensitiveer to the change of light circuit; thereby the touch that has improved the user is experienced; simultaneously; by being set, every pair of optical emitting head and optics Receiver all be in same aspect with optical reflecting plate; thereby effectively protected optical emitting head and optics Receiver not to be subjected to the impact of the factors such as grieshoch; in addition; by the setting of salient point and corresponding depression, greatly improved touch-screen to the sensitivity of touch and the serviceable life of touch-screen.
Description of drawings
Fig. 1 is the side structure synoptic diagram of optical touch screen of the present invention.
Fig. 2 is the structural representation after the touch-screen among Fig. 1 is touched.
Embodiment
The present invention is further described below in conjunction with drawings and Examples:
See also Fig. 1 and Fig. 2, optical touch screen of the present invention comprises optical reflecting plate 100, display screen 500, detecting control circuit (not shown) and at least one pair of optical emitting 110 and optics Receiver 120, described optical reflecting plate 100 is arranged on display screen 500 tops, wherein, the angle that the optical emitting of every centering 110 can be carried out in described optical reflecting plate 100 inside total reflection by incident light is arranged on a side of optical reflecting plate 100, the corresponding optics Receiver 120 of every centering is arranged on the opposite side relative with a described side of described optical reflecting plate 100 by the angle that can accept described incident ray (after optical reflecting plate 100 reflections), described detecting control circuit and every pair of optical emitting 110 are connected with the optics Receiver and are connected, and are used for detecting the light variation between every pair of optical emitting 110 and the optics Receiver 120.Optical emitting 110 can be a pair of (one dimension detecting with the logarithm of optics Receiver 120, for example only need to be used for detecting the touch-screen that whether is touched), be separately positioned on two respective side of optical reflecting plate 100, form a row light matrix, also can be two to (two dimension detecting, namely need to carry out the high touch location detecting of precision), the a pair of first side of optical reflecting plate 100 and the relative second side of being arranged on, another the 3rd side and relative four side to being arranged on optical reflecting plate 100, form two-dimentional light matrix, for the higher touch location detecting of precision, how rightly also can be, be arranged on symmetrically and evenly respectively the four side of optical reflecting plate 100.Optical emitting 110 is selected to determine with logarithm touch precision and the effect according to actual needs of optics Receiver 120.In the present embodiment, comprise that take optical touch screen integer describes as example optical emitting 110 and optics Receiver 120, according to the above-mentioned structure that arranges, in the situation that touch-screen is not touched, the light of all optical emitting 110 emission is through after the total reflection of optical reflecting plate 100, all can be received by the optics Receiver 120 of correspondence, and when touch-screen is touched thing (such as the finger 600 among the figure) touch, be easy to just destroy the total reflection condition of corresponding emission of light, thereby so that corresponding optics Receiver 120 can't receive respective ray of light.Thereby can changing the light between optical emitting 110 and the optics Receiver 120 according to all, detecting control circuit comprehensively judges the position that the touch point is positioned at display screen 500.
In the present embodiment, described optical touch screen also comprises a housing (not shown), and described housing is fixedly installed described optical reflecting plate 100, display screen 500, detecting control circuit, and at least one pair of optical emitting 110 and optics Receiver 120.The every pair of optical emitting 110 all is arranged at the same aspect that is in optical reflecting plate 100 with optics Receiver 120; so arrange; an optical emitting that then can adequately protect 110 and optics Receiver 120 be not subjected to the impact of external environment (such as grieshoch), improved the ability of optical emitting 110 and the anti-interference antidusting of optics Receiver 120.
The angle [alpha] that the incident light of each optical emitting 110 emission is incident to optical reflecting plate 100 can arrange according to actual needs, can be between 0 °-90 °, for example being 15,30 °, 45 °, 60 °, 75 ° etc., in preferred embodiment, is between 30 °-60 °.
The top of described optical reflecting plate 100 is provided with upper substrate 200, the bottom of described upper substrate 200 is evenly equipped with the salient point 210 of lining up array, the every pair of optical emitting 110 and optics Receiver 120 corresponding row salient points 210, the light that spacing between the adjacent salient point 210 equals 110 emissions of corresponding optical emitting produce the integral multiple (for example 1 times, 2 times etc.) of the reflection spot spacing of the exit point that is all-trans at described optical reflecting plate 100 inner the same faces, and the salient point 210 in every row salient point all is arranged on the exit point that is all-trans of corresponding light.Owing to take many optical emitting 110 and optics Receiver 120 are described as example in the present embodiment, described salient point 210 is also arranged with array format, and the array pitch of described salient point 210 equals described incident ray produces the reflection spot spacing of the exit point that is all-trans at optical reflecting plate 100 inner the same faces integral multiple.Because salient point 210 is arranged on the point of total reflection, thereby cause deformation to occur in being all-trans on the exit point, then as long as touch gently the relevant position of salient point 210 top upper substrates 200, corresponding salient point 210 can destroy the total reflection condition of respective ray of light, thereby so that touch-screen is sensitiveer to the reaction that touches, simultaneously, also so that 100 of optical reflecting plates just can deform touching corresponding stress points, effectively avoided the excessive problem of described optical reflecting plate 100 stress areas when not adopting this kind structure, thereby also improved the access times of reflecting plate 100 and the serviceable life of whole touch-screen.
Further, be provided with infrabasal plate 300 between described optical reflecting plate 100 and the display screen 500, the top of described infrabasal plate 300 is provided with described salient point 210 caves in 310 one to one, and each depression 310 all can be held corresponding salient point 210.Concrete, the volume of each depression 210 and the degree of depth are all more than or equal to volume and the thickness of corresponding salient point 210.So arrange, after certain zone of optical reflecting plate 100 is distorted, cooperation by respective recesses 310 is accommodated, can solve the direct rigid conflict of deformed region of optical reflecting plate 100 to the problem of infrabasal plate 300, the serviceable life of further improving access times and the whole touch-screen of reflecting plate 100.
In the present embodiment; also be provided with carriage lining 400 between described upper substrate 200 and the optical reflecting plate 100; described carriage lining 400 edges are slightly larger than (such as large 1mm perpendicular to the thickness of optical reflecting plate 100 directions; 0.1mm) thickness of all salient points 210; all salient points 210 can not separated with optical reflecting plate 100 when touch-screen is not touched acting force; can sensitive contact optical reflecting plate 100 when touch-screen receive to touch, thus protection optical reflecting plate 100 is indeformable in the situation that not have touch.Described carriage lining 400 can be frame shape, also can be column, spherical etc., support upper substrate 200 and be released state when touch-screen is not touched with optical reflecting plate 100 and when touch-screen is touched, can make corresponding salient point 210 contact optical reflecting plates 100 as long as can satisfy.In other embodiments, the thickness of each salient point 210 equates that all described carriage lining 400 is along the thickness that equals each salient point 210 perpendicular to the thickness of optical reflecting plate 100 directions.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. optical touch screen, it is characterized in that: comprise optical reflecting plate, display screen, detecting control circuit and at least one pair of optical emitting head and optics Receiver, described optical reflecting plate is arranged on the display screen top, wherein, the optical emitting head of every centering can be arranged in the angle that described optical reflection intralamellar part carries out total reflection a side of optical reflecting plate by incident light, the optics Receiver of every centering is arranged on the opposite side relative with a described side of described optical reflecting plate by the angle that can accept described incident ray, described detecting control circuit is connected with the optics Receiver with every pair of optical emitting head, and the light that is used for detecting between every pair of optical emitting head and the optics Receiver changes.
2. optical touch screen according to claim 1 is characterized in that: the every pair of optical emitting head and optics Receiver all are in same aspect with optical reflecting plate.
3. optical touch screen according to claim 1 and 2 is characterized in that: the angle that the incident light that each optical emitting hair is penetrated is incident to optical reflecting plate is 30 degree-60 degree.
4. optical touch screen according to claim 1, it is characterized in that: the top of described optical reflecting plate is provided with upper substrate, the bottom of described upper substrate is evenly equipped with the salient point of lining up array, every pair of corresponding row salient point with the optics Receiver of optical emitting head, the spacing of every row salient point equals light that corresponding optical emitting hair penetrates and produces the integral multiple of the reflection spot spacing of the exit point that is all-trans at described optical reflection intralamellar part the same face, and the salient point in every row salient point all is arranged on the exit point that is all-trans of corresponding light.
5. optical touch screen according to claim 1, it is characterized in that: optical touch screen comprises that integer is to optical emitting head and optics Receiver, integer evenly is arranged on four sides of optical reflecting plate to optical emitting head and optics Receiver, the top of described optical reflecting plate is provided with upper substrate, the bottom of described upper substrate is evenly equipped with the salient point of lining up array, the array pitch of described salient point equals described incident ray and produces the integral multiple of the reflection spot spacing of the exit point that is all-trans at optical reflection intralamellar part the same face, and each salient point all is arranged on the exit point that is all-trans of corresponding light.
6. according to claim 4 or 5 described optical touch screens, it is characterized in that: be provided with infrabasal plate between described optical reflecting plate and the display screen, the top of described infrabasal plate is provided with described salient point caves in one to one, and each depression all can be held corresponding salient point.
7. optical touch screen according to claim 6 is characterized in that: the volume of each depression and the degree of depth are all greater than volume and the thickness of corresponding salient point.
8. optical touch screen according to claim 6, it is characterized in that: the volume of each depression and the degree of depth are equal to volume and the thickness of corresponding salient point.
9. optical touch screen according to claim 7 is characterized in that: be provided with the carriage lining between described upper substrate and the optical reflecting plate, described carriage lining is along the thickness that is slightly larger than or equals all salient points perpendicular to the thickness of optical reflecting plate direction.
10. optical touch screen according to claim 1, it is characterized in that: described optical touch screen also comprises a housing, and described housing is fixedly installed described optical reflecting plate, display screen, detecting control circuit, reaches at least one pair of optical emitting head and optics Receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505213.0A CN103019471B (en) | 2012-11-30 | 2012-11-30 | A kind of optical touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505213.0A CN103019471B (en) | 2012-11-30 | 2012-11-30 | A kind of optical touch screen |
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| CN103019471A true CN103019471A (en) | 2013-04-03 |
| CN103019471B CN103019471B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210505213.0A Active CN103019471B (en) | 2012-11-30 | 2012-11-30 | A kind of optical touch screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455199A (en) * | 2013-07-30 | 2013-12-18 | 南昌欧菲光科技有限公司 | Touch display screen |
| CN105094460A (en) * | 2015-05-27 | 2015-11-25 | 京东方科技集团股份有限公司 | Touch module group, touch screen and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004303172A (en) * | 2003-04-01 | 2004-10-28 | Seiko Epson Corp | Optical touch panel and electronic device |
| CN101788733A (en) * | 2009-01-26 | 2010-07-28 | 索尼公司 | Display apparatus and information input apparatus |
| CN102622135A (en) * | 2012-02-29 | 2012-08-01 | 成都吉锐触摸技术股份有限公司 | Touch screen with infrared rays transmitted inside screen body and method for identifying touch points |
| CN102629171A (en) * | 2012-03-30 | 2012-08-08 | 广东威创视讯科技股份有限公司 | Touch display device |
| CN202995684U (en) * | 2012-11-30 | 2013-06-12 | 深圳市深越光电技术有限公司 | Optical touch screen |
-
2012
- 2012-11-30 CN CN201210505213.0A patent/CN103019471B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004303172A (en) * | 2003-04-01 | 2004-10-28 | Seiko Epson Corp | Optical touch panel and electronic device |
| CN101788733A (en) * | 2009-01-26 | 2010-07-28 | 索尼公司 | Display apparatus and information input apparatus |
| CN102622135A (en) * | 2012-02-29 | 2012-08-01 | 成都吉锐触摸技术股份有限公司 | Touch screen with infrared rays transmitted inside screen body and method for identifying touch points |
| CN102629171A (en) * | 2012-03-30 | 2012-08-08 | 广东威创视讯科技股份有限公司 | Touch display device |
| CN202995684U (en) * | 2012-11-30 | 2013-06-12 | 深圳市深越光电技术有限公司 | Optical touch screen |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455199A (en) * | 2013-07-30 | 2013-12-18 | 南昌欧菲光科技有限公司 | Touch display screen |
| CN105094460A (en) * | 2015-05-27 | 2015-11-25 | 京东方科技集团股份有限公司 | Touch module group, touch screen and display device |
| US20160349879A1 (en) * | 2015-05-27 | 2016-12-01 | Boe Technology Group Co., Ltd. | Touch module and touch screen |
| US9965103B2 (en) * | 2015-05-27 | 2018-05-08 | Boe Technology Group Co., Ltd. | Touch module and touch screen |
| US10203813B2 (en) | 2015-05-27 | 2019-02-12 | Boe Technology Group Co., Ltd. | Touch module and touch screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103019471B (en) | 2016-04-27 |
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Address after: Building 2, building 1, No. 118, Liguang new industrial zone, Liguang community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Star touch technology (Shenzhen) Co., Ltd Address before: Baoan District Shenzhen City, Guangdong province 518110 streets Guanlan Liguang community Li New Light Industrial Zone No. 118 Building 1, building 2 Patentee before: TOP TOUCH ELECTRONICS Co.,Ltd. |
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