CN101034332A - Display device having touch-control input function - Google Patents
Display device having touch-control input function Download PDFInfo
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- CN101034332A CN101034332A CN 200710107787 CN200710107787A CN101034332A CN 101034332 A CN101034332 A CN 101034332A CN 200710107787 CN200710107787 CN 200710107787 CN 200710107787 A CN200710107787 A CN 200710107787A CN 101034332 A CN101034332 A CN 101034332A
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Abstract
This invention provides a kind of display device with a touch input function; the display device includes the dock, display panel, sensor plate and the light source. Display panel is installed on the dock.The display panel has a driving circuit layer including plural light sensor components. Sensor plate with interface and underside is installed at the side of the display panel, thereinto the underside looking towards the display surface of display panel. Light source is installed along the edge of the sensor plate, and launch into the sensor plate. When the contact surface in the state of no touching interface, the light in contact with a total reflection on interface and underside; when a specific location of the contact surface in the state of contact interface, the specific location of contact surface will scatter parts of light penetrating underside to arrive components. This invention can be carried out more input and fingerprint recognition, without the impact from the environment of electric field, improves the accuracy of sensors.
Description
Technical field
The present invention is relevant for a kind of display device; Particularly, the present invention is relevant for a kind of display device (An display apparatus with a detection plate) with touch-control input function.
Background technology
The flat display apparatus of display panel and use display panel becomes the main flow of all kinds of display device gradually.Display screen of the LCD monitor of the slim TV of family expenses, personal computer and laptop computer, mobile phone and digital camera etc. for example is the product of a large amount of use display panels.Along with product design trends towards user's guiding gradually, for considering user's operation ease, the display panel with touch-control input function becomes the emphasis of industry development gradually.
With the display panels is example, and as shown in Figure 1, the display panels of traditional tool touch-control input function comprises display panel 10 and touch sensing board 30.Touch sensing board 30 is arranged on the display surface 11 of display panel 10.In other words, display panel 10 sees through touch sensing board 30 outside show images.At present touch sensing board 30 technology of more widely using comprise two kinds of resistance-type and condenser types.
With the touch sensing board 30 of resistance-type, its drive principle utilizes the mode of voltage drop to seek the coordinate of contact point.Touch sensing board 30 is divided into two-layer up and down, and applies a voltage difference on two-dimensional directional respectively.When the user clicks contact point on the touch sensing board 30, promptly produce the conducting loop in this contact point.This conducting loop promptly produces voltage drop in system, make system be judged the position of contact point.Yet this type of touch sensing board 30 also can't be done the multiple spot input, and can't carry out identification of fingerprint simultaneously.In addition, just can make contact point produce the conducting loop because the user need apply certain pressure, so this type of touch sensing board is subject to the minimum restriction that is used as power.
The drive principle of capacitor-type touch sensing board is then different with the electric resistance touch-control tablet.With capacitor-type touch sensing board, system is in four jiaos of discharges of tablet, to form a uniform electric field on the surface.When the user with finger or during other object contact induction plate, promptly can siphon away the electric current of trace.This moment, system can calculate position contacting according to this.Yet this type of touch sensing board can't be done the multiple spot input equally simultaneously and carry out identification of fingerprint.In addition, this type of touch sensing board is subject to the influence of environment of electric field, and then influences accuracy of sensors.
Summary of the invention
A purpose of the present invention is to provide a kind of display device, can carry out the multiple spot input by touch control manner.
Another object of the present invention is to provide a kind of display device, can carry out identification of fingerprint.
Another object of the present invention is to provide a kind of display device, can reduce the influence of environment of electric field and ambient brightness.
Another object of the present invention is to provide a kind of display device, can reduce the minimum restriction that is used as power.
Display device of the present invention comprises base, display panel, tablet and light source.Display panel is arranged on the base.Display panel has drive circuit layer.Drive circuit layer receives signal of video signal, and drives the display panel show image.Drive circuit layer comprises a plurality of light sensation assemblies.The built-in drive circuit layer that is formed at of light sensation assembly, and the part of formation drive circuit layer.Tablet is arranged at a side of display panel.Tablet has surface of contact and bottom surface, and wherein the bottom surface is towards the display surface of display panel.Light source is arranged at the lateral margin of tablet, and emission light enters tablet.
When article when contact do not arranged on the surface of contact of tablet, then produce a contact interface state not.The light that inject tablet by light source this moment produces total reflection between surface of contact and bottom surface, and is led to each corner in the tablet.When the specific location of surface of contact is pointed, during the contact of touch-control instrument or other article, surface of contact promptly produces the contact interface state in this specific location.When the part light in light source is injected tablet reflected so far ad-hoc location, surface of contact made light produce the scattering behavior in this locational contact interface state, but not keeps original total reflection behavior.This moment part suffers the bottom surface of the light penetration tablet of scattering, and enters in the display panel and received by the light sensation assembly.
The present invention can carry out multiple spot input and identification of fingerprint simultaneously, and is not subjected to the influence of environment of electric field, improves accuracy of sensors.
Description of drawings
Fig. 1 is the display panel synoptic diagram of traditional tool touch-control input function;
Fig. 2 is the embodiment assembly exploded view of display device of the present invention;
Fig. 3 is the embodiment diagrammatic cross-section of display device;
Fig. 4 is arranged at another embodiment sectional view of tablet lateral margin for light source;
Fig. 5 a is the embodiment synoptic diagram of not contact interface state;
Fig. 5 b is the embodiment synoptic diagram of contact interface state;
Fig. 6 a is another embodiment diagrammatic cross-section of display device;
Fig. 6 b is another embodiment diagrammatic cross-section of display device;
Fig. 7 a is the embodiment synoptic diagram of drive circuit layer;
Fig. 7 b is another embodiment synoptic diagram of drive circuit layer.
The primary clustering symbol description:
100: base
110: backlight module
300: display panel
301: display surface
310: drive circuit layer
330: the light sensation assembly
500: tablet
510: surface of contact
530: the bottom surface
600: air layer
700: light source
810: pixel cell
830: the pixel cell group
Embodiment
The invention provides a kind of display device.The display device of this place speech comprises but is not restricted to the flat display apparatus that uses display panel.Display panel preferably comprises display panels, organic LED display panel or other display panel.In addition, display panels comprises the display panels of penetrate through type liquid crystal display board, reflecting type liquid crystal display panel, half-penetration reflecting type liquid crystal display panel and other form.
As shown in Figure 2, display device of the present invention comprises base 100, display panel 300, tablet 500 and light source 700.Display panel 300 is arranged on the base 100.In this embodiment, display panel 300 is preferably display panels; Yet in different embodiment, display panel 300 also can be organic LED panel or other display panel 300.In addition, when display panel 300 adopted display panels, the preferable backlight modules 110 that are provided with in the base 100 were to provide display panel 300 required back light.This backlight module 110 can be direct type backlight module 110, also can be side entrance back module 110.Yet when display panel 300 is reflective display panels, backlight module 110 need be set in the base 100.
As shown in Figure 3, display panel 300 has drive circuit layer 310.Drive circuit layer 310 receives signal of video signal, and drives display panel 300 show images.In this preferred embodiment, drive circuit layer 310 comprises the thin-film transistor circuit layer; Yet in different embodiment, drive circuit layer 310 also can be the driving circuit of other form, for example the MIM-TFD circuit.Drive circuit layer 310 comprises a plurality of light sensation assemblies 330.As shown in Figure 3, the light sensation assembly 330 built-in drive circuit layer 310 that are formed at, and the part of formation drive circuit layer 310.Light sensation assembly 330 can receive or the induction light signal, converts it to current signal and exports the back-end processing device to.In addition, light sensation assembly 330 also can limit the light signal that only receives specific wavelength, to reduce the generation of disturbing.In preferred embodiment, light sensation assembly 330 comprises the electronic package of complementary metal oxide semiconductor assembly (CMOS), P channel metal-oxide semiconductor assembly (PMOS) or other tool photosensitivity.
As shown in Figures 2 and 3, display panel 300 has display surface 301, and tablet 500 is arranged at display surface 301 sides of display panel 300.Yet in different embodiment, tablet 500 also can be arranged at other side of display panel 300, to provide and the lower input function of show image connection degree, and for example fingerprint input etc.Tablet 500 has surface of contact 510 and bottom surface 530, and wherein surface of contact 510 is preferably two relative and parallel planes with bottom surface 530.In the embodiment shown in fig. 3, bottom surface 530 is towards the display surface 301 of display panel 300.Tablet 500 is the light guide plate of tool light peneration, and its refractive index is preferably between 1.2 to 1.8.Tablet 500 is preferably by the organic resin material made.Yet in different embodiment, tablet 500 also can be made by the material of other tool light peneration, for example glass or other material.In addition, tablet 500 also can be mixed and made into by various material.
As shown in Figures 2 and 3, light source 700 is arranged at the lateral margin of tablet 500, and emission light enters tablet 500.In this preferred embodiment, light source 700 is right against the lateral margin of tablet 500, and launches light via lateral margin in tablet 500; Yet in different embodiment, as shown in Figure 4, light source 700 also can be arranged at the top of tablet 500 lateral margins, and via emission light in the last direction tablet 500 of lateral margin.The light that light source 700 is injected in the tablet 500 is preferably invisible light.With preferred embodiment, the specific wavelength of injecting light is greater than 800nm or less than 400nm.
Shown in Fig. 5 a, on the surface of contact 510 of tablet 500, keep headroom, to produce one not during the contact interface state, the light of being injected tablet 500 by light source 700 produces total reflection at surface of contact 510 and 530 of bottom surfaces.In other words, this one not the contact interface state make surface of contact 510 and external agency several close and optical relation such as refractive index on, all reach the condition of inner full-reflection.Light can remain between surface of contact 510 and the bottom surface 530 and outwards not disperse this moment, and was led to each corner in the tablet 500.
Shown in Fig. 5 b, when the specific location of surface of contact 510 is pointed, during the contact of touch-control instrument or other article, surface of contact 510 promptly produces the contact interface state in this specific location.This contact interface state destroys total reflection boundary condition originally, to produce so-called " frustrated total internal reflection " (Frustrated Total Internal Reflection, FTIR) phenomenon on this ad-hoc location.In other words, when the part light in light source is injected tablet 500 reflected so far ad-hoc location, surface of contact 510 made light produce the scattering behavior in this locational contact interface state, but not keeps original total reflection behavior.This moment part suffers the bottom surface 530 of the light penetration tablet 500 of scattering, and enters in the display panel 300 and received by light sensation assembly 330.Light sensation assembly 330 is converted to current signal with the light signal that receives and is sent to the back-end processing device, can calculate the ad-hoc location place that is changed interfacial state on the surface of contact 510 according to this.Therefore the user clicks with the touch-control instrument on surface of contact 510 or with input behaviors such as finger presses fingerprints, is passed to the back-end processing device and forms input signal.
Not contact interface state difference shown in contact interface state shown in Fig. 5 a embodiment and Fig. 5 b embodiment, be preferably when the ad-hoc location of surface of contact 510 when the contact interface state does not enter the contact interface state, the refractive index of external agency changes on the ad-hoc location.For example as user during with the ad-hoc location of finger presses surface of contact 510, the external agency of ad-hoc location promptly replaces with finger by air.Therefore the refractive index of external agency is the refractive index of finger from the refraction index changing of air also thereupon.Because the change of this outside medium refraction index, and then influence total reflection condition on the surface of contact 510 and the total reflection behavior in the tablet 500, make reflection light generation scatter radiation situations so far.
Yet in different embodiment, the variations in refractive index of external agency also can be produced by the mode of non-entity contact on the ad-hoc location of surface of contact 510.For example, can change the interfacial state of specific location, make the tablet 500 injections light generation scattering of position so far with the ad-hoc location of laser indication device (Laser Pointer) or other irradiate light surface of contact 510.In other words, can make this moment ad-hoc location enter the contact interface state, and then influence total reflection condition on the surface of contact 510 and the total reflection behavior in the tablet 500, make reflection light generation scatter radiation situations so far by contact interface state not.Hence one can see that, and above-mentioned contact interface state might not need to touch surface of contact 510 by finger or other entity and can produce; Also can produce this contact interface state by light or other non-entity energy.
In the embodiment shown in Fig. 6 a, the bottom surface 530 of surface of contact 500 and 301 of the display surfaces of display panel 300 are folded with air layer 600.By the low-refraction of air layer 600, make the bottom surface 530 of surface of contact 500 that preferable inner total reflection effect be arranged.Yet in different embodiment, shown in Fig. 6 b, 301 of the bottom surface 530 of surface of contact 500 and the display surfaces of display panel 300 also can be folded with the anti-scattering rete 650 of one layer or more.The material that anti-scattering rete 650 is preferably by titania (TiO2), silicon dioxide (SiO2) or its combination is constituted.
Shown in Fig. 7 a, the drive circuit layer 310 of display panel 300 comprises a plurality of pixel cells 810.In this embodiment, each pixel cell 810 comprises a light sensation assembly 330 and is formed at wherein.With color display panel 300, a plurality of pixel cells 810 include red pixel unit R, green pixel unit G and blue pixel unit B at least.In the embodiment shown in Fig. 7 a, pixel cell of all kinds connects a light sensation assembly 330 respectively.Light sensation assembly 330 is preferably when drive circuit layer 310 forms, and is formed at simultaneously in the drive circuit layer 310 in same manufacturing process.For example when drive circuit layer 310 was the thin-film transistor circuit layer, light sensation assembly 330 was formed in each pixel cell 810 in the thin film transistor (TFT) manufacturing process that forms drive circuit layer 310 simultaneously.
Yet in the embodiment shown in Fig. 7 b, red pixel unit R, green pixel unit G and blue pixel unit B can be formed a pixel cell group 830.In other words, pixel cell group 830 can drive display panel 300 by the pixel cell of all kinds 810 that is comprised and produce a mixed light on display surface 301.In this embodiment, each pixel cell group 830 comprises single light sensation assembly 330; Promptly one group of red pixel unit R, green pixel unit G and blue pixel unit B are shared single light sensation assembly 330.In this embodiment, the formation position of light sensation assembly 330 is not limited to the pixel cell 810 of particular color.In addition, in different embodiment, the distribution of light sensation assembly 330 also can be adopted at random or other arrangement mode is distributed on the drive circuit layer 310.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, being contained in the modification of the spirit of claim and scope and equalization is provided with and all is contained in the scope of the present invention.
Claims (19)
1. a display device is characterized in that, described device comprises:
One base;
One display panel, it is arranged on the described base, and described display panel has the one drive circuit layer; Wherein said drive circuit layer comprises a plurality of light sensation assemblies;
One tablet, described tablet have light peneration and are arranged at a side of described display panel, and described tablet has a surface of contact and a bottom surface, and wherein said bottom surface is towards described display panel; And
One light source is arranged at a lateral margin of described tablet; Wherein said light emitted one light enters described tablet, keeps one not during the contact interface state when described surface of contact, and described light produces total reflection at described surface of contact and described bottom surface; When an ad-hoc location of described surface of contact was in a contact interface state, described light sensation assembly was arrived in the described bottom surface of the described light penetration of described ad-hoc location scattered portion of described surface of contact.
2. display device as claimed in claim 1 is characterized in that described display panel has a display surface, and described tablet is arranged at the described display surface side of described display panel, and described display surface is with respect to the described bottom surface of described tablet.
3. display device as claimed in claim 1 is characterized in that the refractive index of described tablet is between 1.2 to 1.8.
4. display device as claimed in claim 1 is characterized in that, the light that described light source is injected described tablet is invisible light.
5. display device as claimed in claim 4 is characterized in that, the light that described light source is injected described tablet has a specific wavelength, and described specific wavelength is greater than 800nm.
6. display device as claimed in claim 4 is characterized in that, the light that described light source is injected described tablet has a specific wavelength, and described specific wavelength is less than 400nm.
7. display device as claimed in claim 1 is characterized in that, folder is established an air layer between described tablet and described display panel.
8. display device as claimed in claim 1 is characterized in that, folder is established an anti-scattering rete between described tablet and described display panel.
9. display device as claimed in claim 8 is characterized in that, described anti-scattering rete comprises titania or silicon dioxide.
10. display device as claimed in claim 1 is characterized in that, described contact interface state comprises the medium refraction index change that described ad-hoc location connects with respect to the change of described not contact interface state.
11. display device as claimed in claim 1 is characterized in that, described contact interface state comprises described ad-hoc location with respect to the change of described not contact interface state and bears external light source and change.
12. display device as claimed in claim 1 is characterized in that, described drive circuit layer comprises a plurality of pixel cells, and each described pixel cell comprises single described light sensation assembly.
13. display device as claimed in claim 1 is characterized in that, described drive circuit layer comprises a plurality of pixel cell groups, and described pixel cell group has a plurality of pixel cells, and each pixel cell group comprises single described light sensation assembly.
14. display device as claimed in claim 1 is characterized in that, described display panel comprises a display panels.
15. display device as claimed in claim 14 is characterized in that, described device further comprises backlight module, and it is arranged in the described base and corresponding described display panels, and described backlight module produces in the described display panels of light incident.
16. display device as claimed in claim 1 is characterized in that, described display panel comprises an organic LED display panel.
17. display device as claimed in claim 1 is characterized in that, described drive circuit layer comprises a thin-film transistor circuit layer.
18. display device as claimed in claim 1 is characterized in that, described light sensation assembly comprises the complementary metal oxide semiconductor assembly.
19. display device as claimed in claim 1 is characterized in that, described light sensation assembly comprises P channel metal-oxide semiconductor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101077871A CN100468304C (en) | 2007-04-30 | 2007-04-30 | Display device having touch-control input function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101077871A CN100468304C (en) | 2007-04-30 | 2007-04-30 | Display device having touch-control input function |
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| CN101034332A true CN101034332A (en) | 2007-09-12 |
| CN100468304C CN100468304C (en) | 2009-03-11 |
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| CNB2007101077871A Active CN100468304C (en) | 2007-04-30 | 2007-04-30 | Display device having touch-control input function |
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| CN101825797A (en) * | 2010-05-26 | 2010-09-08 | 福州华映视讯有限公司 | Photo induction touch-control liquid crystal display device |
| CN101452358B (en) * | 2007-12-03 | 2011-01-26 | 乐金显示有限公司 | Contact panel display |
| CN101515322B (en) * | 2008-02-22 | 2011-03-02 | 神盾股份有限公司 | Image sensing device and electronic device using same |
| CN101989148A (en) * | 2009-08-04 | 2011-03-23 | 北京汇冠新技术股份有限公司 | Touch screen |
| WO2011060590A1 (en) * | 2009-11-20 | 2011-05-26 | Chen Weishan | Multi-point touch control apparatus and detection method |
| CN102419660A (en) * | 2010-09-28 | 2012-04-18 | 扬升照明股份有限公司 | Touch-control display device and operation method thereof |
| CN102473059A (en) * | 2009-08-12 | 2012-05-23 | 瑟克公司 | Synchronous timed orthogonal measurement pattern for multi-touch sensing on touchpad |
| CN102033636B (en) * | 2009-09-29 | 2012-08-29 | 晶宏半导体股份有限公司 | Control system of touch module |
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| CN103631450A (en) * | 2012-08-21 | 2014-03-12 | 胜华科技股份有限公司 | Touch display panel and optical touch panel thereof |
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| CN104281345A (en) * | 2013-07-01 | 2015-01-14 | 时代光电科技股份有限公司 | Light guide plate touch device utilizing total internal reflection of diffracted light |
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| CN108664854A (en) * | 2017-03-30 | 2018-10-16 | 上海箩箕技术有限公司 | Fingerprint imaging module and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101452358B (en) * | 2007-12-03 | 2011-01-26 | 乐金显示有限公司 | Contact panel display |
| CN101515322B (en) * | 2008-02-22 | 2011-03-02 | 神盾股份有限公司 | Image sensing device and electronic device using same |
| US8570303B2 (en) | 2008-09-04 | 2013-10-29 | Au Optronics Corporation | Display module |
| CN101989148A (en) * | 2009-08-04 | 2011-03-23 | 北京汇冠新技术股份有限公司 | Touch screen |
| CN102473059B (en) * | 2009-08-12 | 2015-06-24 | 瑟克公司 | Synchronous timed orthogonal measurement pattern for multi-touch sensing on touchpad |
| CN102473059A (en) * | 2009-08-12 | 2012-05-23 | 瑟克公司 | Synchronous timed orthogonal measurement pattern for multi-touch sensing on touchpad |
| CN102033636B (en) * | 2009-09-29 | 2012-08-29 | 晶宏半导体股份有限公司 | Control system of touch module |
| WO2011060590A1 (en) * | 2009-11-20 | 2011-05-26 | Chen Weishan | Multi-point touch control apparatus and detection method |
| CN105930013A (en) * | 2009-11-25 | 2016-09-07 | 康宁股份有限公司 | Sensing touch display and application method thereof |
| CN101825797A (en) * | 2010-05-26 | 2010-09-08 | 福州华映视讯有限公司 | Photo induction touch-control liquid crystal display device |
| CN102419660A (en) * | 2010-09-28 | 2012-04-18 | 扬升照明股份有限公司 | Touch-control display device and operation method thereof |
| CN103631450A (en) * | 2012-08-21 | 2014-03-12 | 胜华科技股份有限公司 | Touch display panel and optical touch panel thereof |
| CN104281345A (en) * | 2013-07-01 | 2015-01-14 | 时代光电科技股份有限公司 | Light guide plate touch device utilizing total internal reflection of diffracted light |
| CN104182727A (en) * | 2014-05-16 | 2014-12-03 | 深圳印象认知技术有限公司 | Ultra-thin fingerprint and palm print collection device, and fingerprint and palm print collection method |
| CN104182727B (en) * | 2014-05-16 | 2021-07-30 | 深圳印象认知技术有限公司 | Ultra-thin fingerprint and palm print acquisition device and fingerprint and palm print image acquisition method |
| US10083335B2 (en) | 2014-06-20 | 2018-09-25 | Vkansee Technology Company Ltd. | Image acquisition apparatus, terminal device, liquid crystal terminal device and image acquisition method |
| CN104298395A (en) * | 2014-09-04 | 2015-01-21 | 艾普柯微电子（上海）有限公司 | Method for detecting approaching of object |
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| CN109325384A (en) * | 2017-07-31 | 2019-02-12 | 敦泰电子有限公司 | Cell type optical identification of fingerprint shows equipment |
| WO2019134059A1 (en) * | 2018-01-04 | 2019-07-11 | 敦捷光电股份有限公司 | Optical fingerprint recognition system |
| CN108287634A (en) * | 2018-01-29 | 2018-07-17 | 上海天马微电子有限公司 | Touch display panel, display device and driving method of touch display panel |
| CN108833614B (en) * | 2018-03-28 | 2020-09-11 | Oppo广东移动通信有限公司 | Display screen, electronic device and manufacturing method of display screen |
| CN108833614A (en) * | 2018-03-28 | 2018-11-16 | 广东欧珀移动通信有限公司 | The manufacturing method of display screen, electronic device and display screen |
| CN109407374A (en) * | 2018-07-24 | 2019-03-01 | 友达光电股份有限公司 | Display device and sensing element substrate |
| CN113672105A (en) * | 2020-05-14 | 2021-11-19 | 海信视像科技股份有限公司 | Display device |
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| Publication number | Publication date |
|---|---|
| CN100468304C (en) | 2009-03-11 |
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