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WO2012163725A1 - Ecran doté d'un émetteur optique intégré - Google Patents

Ecran doté d'un émetteur optique intégré Download PDF

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Publication number
WO2012163725A1
WO2012163725A1 PCT/EP2012/059449 EP2012059449W WO2012163725A1 WO 2012163725 A1 WO2012163725 A1 WO 2012163725A1 EP 2012059449 W EP2012059449 W EP 2012059449W WO 2012163725 A1 WO2012163725 A1 WO 2012163725A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
optical
diode
integrated
display according
Prior art date
Application number
PCT/EP2012/059449
Other languages
German (de)
English (en)
Inventor
Uwe Hill
Wolfgang Jörger
Original Assignee
Mechaless Systems Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mechaless Systems Gmbh filed Critical Mechaless Systems Gmbh
Priority to DE112012002330.7T priority Critical patent/DE112012002330A5/de
Publication of WO2012163725A1 publication Critical patent/WO2012163725A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/11—Function characteristic involving infrared radiation

Definitions

  • Displays are used today in many technical devices, for example in the PC sector as well as in TV sets. Modern mobile phones, so-called smartphones, now also have a display.
  • the displays are mainly based on LCD technology, whereby a liquid crystal layer, the so-called LCD layer, is illuminated by the illumination LEDs.
  • the displays have a touch screen interface, which is used in particular in mobile computers and mobile phones. Even with public user terminals, touchscreens can be found. For this it is necessary that the user the surface of the display which is often located behind a glass plate, so that the liquid crystal layer is not directly touched.
  • touch screen display individual keys displayed on the screen can be activated. It is also possible to perform a swipe or other movement on the surface detected by the touch screen module. These movements are used, for example, to enlarge or reduce the content displayed or to scroll.
  • Touching the touchscreen display to the controller leads to contamination that, on the one hand, degrades the optimal display of the contents on the display and, on the other hand, can be uncomfortable for the users, for example in public terminals.
  • ESD electrostatic discharge
  • mechanical damage such as scratches.
  • germs may be transmitted when different people use the same touch screen.
  • Object of the present invention is therefore to provide operating options for a display even if no direct contact with the surface takes place or so that no contact of the surface is necessary.
  • the object is achieved by a display with integrated optical transmitter having the features of claim 1.
  • the already known and existing displays are extended by the possibility to also support sensor applications such as the contactless recognition of approaches or gestures.
  • a display module comprises a modulatable optical filter which Preferably, a liquid crystal layer or LCD layer is an optical element, which is preferably passive and more preferably a diffuser, and a plurality of modulated light sources, preferably illumination LEDs, for illuminating the display.
  • the light emitted by the modulatable light sources or the illumination LEDs is guided through the optical element and illuminates the modulatable optical filter, that is to say preferably the LCD layer.
  • the display module according to the invention has the advantage that no additional space is required in the device itself.
  • very compact mobile devices can be produced, especially those that have no or an extremely small edge of the housing around the display.
  • the present invention can preferably be used, for example, in modern mobile telephones, on the upper side of which there is no visible edge of the housing.
  • the display of the invention has significant advantages over a sensor system, as proposed in WO 201 1/160079.
  • the sensor system is located below the housing, in particular on the edge of the housing and not in the display.
  • this solution requires additional space.
  • it is independent of the display, but at the same time requires a larger design effort and a higher production cost, since the individual components of the sensor system must be additionally integrated into the housing.
  • the optical filter for example the LCD layer of the display
  • the optical filter responds at least twice as fast as the human eye
  • the transmitter for example the transmitter diode
  • supplies a static polarized light signal for example the transmitter diode.
  • other modulations for the transmission signal of the optical transmitter are conceivable.
  • the display comprises an optical receiver, preferably a receiving diode, located below the modulated optical filter, e.g. the liquid crystal layer is integrated.
  • the modulated optical filter e.g. the liquid crystal layer is integrated.
  • one of the illumination LEDs is replaced by the receiving diode.
  • an optoelectronic sensor in the display.
  • the preferred sensor comprises the integrated optical transmitter, that is to say preferably the infrared diode, as well as the optical receiver, preferably the receiving diode, and permits optical recognition of approximations or gestures in front of the display.
  • a system operating according to the Halios principle has the advantage that a gesture control and detection of objects above the display is possible independently of the prevailing ambient light. Especially in strong sunlight, the Halios system works reliably and very robust.
  • the display comprises a board, the
  • control and evaluation electronics comprise the compensating measuring or control circuit for controlling the compensation diode and / or for controlling the optical transmitter or the infrared diode.
  • the compensation diode is preferably regulated in such a way that the transmission signal of the optical transmitter received by the receiving diode or the receiver is compensated.
  • the drive and evaluation electronics for the optical transmitter or the optical sensor can be integrated in an integrated circuit, such as an IC or ASIC.
  • the control and evaluation is integrated on the board for the display control.
  • control and evaluation electronics are designed such that the optical transmitter and / or the optoelectronic sensor comprising the transmitter and the receiver as well as the compensator are not power-controlled. There is only an adaptation of the modulated signal. The radiated power is not regulated.
  • the optical element has, for example, a recess or a blind bore which is open toward the modulatable optical filter.
  • the optical transmitter can transmit radiation through the optical filter to the outside, wherein this radiation is not affected by the optical element.
  • the radiation of the transmitter reflected outside the display can be received by the optical element without being influenced by the optical element.
  • the blind hole is to be constructed according to the desired applications of the display. It can have different expansions. It is also possible that only one depression or depression is used in the surface of the optical element for the placement of the diodes.
  • the side surfaces of the recess may be coated, so that a directional radiation is generated.
  • Figure 5a, b is a schematic representation of a display with three transmitters;
  • Figure 6 is a schematic representation of a gesture control in a smart phone.
  • Figures 1 and 2 show a conventional display module, which is designed as an LCD display 1.
  • Such displays have a backlight, which consists of white LEDs, which are either distributed over the entire display surface or distributed only at the edge.
  • Displays with full-surface arranged behind the display surface illumination LEDs 8 i o are referred to as a full-LED display (see FIG. 1 a); those with an arrangement of the illumination LEDs 8 at the edge as edge LED displays (see Fig. 1 b).
  • the terms display and display module are used synonymously and refer to the necessary components arranged on a display board 11.
  • the core of these displays 1 is a modulatable optical filter 2, which is formed in LCD displays as a liquid crystal layer 3 (liquid crystal layer).
  • a liquid crystal layer 3 liquid crystal layer
  • an optical element 4 is arranged in the display 1, which is preferably a diffuser 5.
  • a glass plate 6 may be arranged to a
  • the components are arranged on a circuit board 11 and encompassed by a display module frame 10.
  • a light box 7 is preferably arranged below the diffuser 5, in which a plurality of illumination LEDs 8 are positioned.
  • the illumination LEDs 8 radiate through the diffuser 5 from behind onto the liquid crystal layer 3 and can thus make the information displayed there visible.
  • the diffuser 5 has the task, the
  • the illumination LEDs 8 are usually arranged in an array 9, which is also referred to as "Array Lit LED Lightbox".
  • the optical components Lightbox 7, Diffuser 5 and Fluids Crystal layer 3 are laterally framed by an elastomeric strip 9 in the display module frame 10.
  • At least one of the illumination LEDs 8 is replaced by an optical transmitter 12, which is preferably formed as an infrared diode 13 (IR diode). Accordingly, according to the invention, at least one of the illumination LEDs 8 in the lightbox 7 is replaced by an infrared diode 13. This can for example be positioned at the edge of the lightbox 7 or at one of the corners, as shown in FIGS. 2a and 2b. 2a shows two infrared diodes 13 on the outer right and left edge of the lightbox 7. The corresponding lighting
  • 1 1 openings may be disposed near the infrared diodes 13 in the circuit board, so that the infrared diodes 13 can radiate down i o through the board 1 1.
  • the housing of the mobile device must be transparent to the infrared radiation at least locally at the relevant points.
  • a receiver 14 is arranged in the lightbox 7.
  • the board 11 has in these
  • FIG. 2c shows a section along the line A-A from FIG. 2b.
  • a plurality of IR diodes 13 are arranged in the lightbox 7 and replace the illumination LEDs 8 originally positioned there.
  • one of the illumination LEDs 8 of the display 1 is replaced by a receiving diode 14 in order to receive the signals emitted by the transmitter 12 after reflection, for example a hand outside the display 1.
  • the receiving diode 14 is preferably under the liquid crystal layer 3 is arranged, preferably below the diffuser 5.
  • a full-LED display according to Fig. 3a and 3b is preferably a lighting LED 8 near the middle or in the middle of the lightbox 7 replaced by the receiving diode 14.
  • In three corners of the lightbox 7 5 instead of the LEDs 8 infrared diodes 13 are arranged.
  • the distance to the existing transmitters 12 in the lightbox 7 can be selected as equal as possible.
  • a further illumination diode 8 by replaced a compensation diode 17 as a compensator in addition to the four illumination LEDs 8, which are replaced by the infra red diodes 13 in the corners of the lightbox 7 and by the receiving diode 14 in the middle of the lightbox 7, a further illumination diode 8 by replaced a compensation diode 17 as a compensator. It is preferably arranged close to the optical receiver, which is the receiving diode 14, and preferably radiates directly to the receiving diode 14. In any case, 15 should preferably receive no radiation from the compensation diode 17 to the outside and thus into the transmission path from the transmitters 12 to the receiving diode 14 , Such an arrangement with a gesture recognition according to the Halios principle is shown in Fig. 3a. In this way, the simplest possible gesture recognition according to the Halios principle can be realized. It is self-evident
  • multiple transmitters 12 and infrared diodes 13 are positioned in the display 1 when complex and / or three-dimensional gesture control is desired.
  • at least two transmitters 12, 25 are preferably to use at least three transmitters 12.
  • Fig. 3b shows schematically the transmission paths from the infrared diodes 13 to the receiving diode 14 and the lightbox 7.
  • the liquid crystal layer 3, the illumination LEDs 8 and other parts of the display 1 are for reasons
  • the radiation emitted by the infrared diodes 13 (arrows A), which comprises a transmission signal, is reflected on an object, here for example a hand.
  • the reflected radiation (arrows B) reaches the receiving diode 14.
  • a compensation signal directly from the compensation diode 17 to the receiving diode 14 which is superimposed with the reflected signals in the receiving diode and further processed in a measuring circuit, which may be integrated, for example, on the board 1 1 of the display 1.
  • a measuring circuit which may be integrated, for example, on the board 1 1 of the display 1.
  • the diffuser 5 is designed to scatter the light emitted by the illumination LEDs 8 before it strikes the liquid crystal layer 3. However, this scattering effect is unsuitable for the transmitted transmission signals of the transmitters 12.
  • a material is to be used as a diffuser 5, which does not scatter the infrared radiation, but the light radiation of the illumination LEDs 8.
  • the diffuser 5 is thus preferably for the infrared radiation 20 "transparent" and diffuse simultaneously for the light radiation in the visible range scattering.
  • the transmitters 12 or the IR diodes 13 and / or the receiving diode 14 are integrated in the diffuser 5.
  • the transmitters 12 or the IR diodes 13 and / or the receiving diode 14 are integrated in the diffuser 5.
  • the diffuser 5 may have a recess 25 or a blind bore 15 which receive the components.
  • the blind bore 15 is lined on the inside so that no infrared radiation directly
  • the diffuser 5 has a channel 16 in the region of the infrared diodes 13 and the receiving diode 14.
  • the channel 16 is designed such that it allows the radiation emitted by the infrared diode 13 to pass through substantially unaffected.
  • the channel 16 may be realized by a through hole. The infrared radiation passes unhindered through the diffuser 5.
  • the diffuser 5 20 in the region of the infrared diodes 13 and / or the receiving diode 14 has a lens 22 which can be produced by appropriate material processing of the diffuser 5. This results in a bundling of the transmitted transmission signal of the infrared diode 13, so that the transmission radiation of the infrared diodes 13 almost unhindered, preferably in an advantageous manner.
  • FIG. 5 a shows a detailed section through a display module 1, in which the illumination LEDs 8 are arranged all over under the liquid crystal layer 3 (full LED display).
  • a color layer 19 is arranged below a glass layer 18, a color layer 19 is arranged.
  • the liquid crystal layer 3 adjoining it is enclosed by a plurality of electrodes 20 on both sides.
  • the liquid crystal layer 3 is actuated by means of the electrodes 20.
  • the diffuser 5 is positioned, which optionally may have channels 16, which are not shown in FIG. 5a.
  • the adjoining the diffuser 5 15 Lightbox 7 has a plurality of illumination LEDs 8.
  • One of the LEDs 8 in Fig. 5a is replaced by an infrared diode 13 as a transmitter 12.
  • FIG. 6 shows a mobile telephone 23 with a relatively small display 1 with a screen diagonal of about 4 ".
  • These displays 1 are typical in mobile telephones or mobile devices, such as video players or music players (eg iPod) Transmitter 12 integrated in the display module 1, so that a good recognition of non-contact gestures can take place.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un écran doté d'un émetteur optique intégré, comprenant un élément optique (4) qui est, de préférence, un diffuseur (5), un filtre optique (2) modulaire et une pluralité de sources lumineuses modulables ou de DEL d'éclairage (8) pour éclairer l'écran. La lumière qui est émise par les DEL d'éclairage (8) traverse l'élément optique (4) et éclaire le filtre optique (3) modulable par l'arrière. Au moins un émetteur optique (12) est disposé sous le filtre optique (2) modulable.
PCT/EP2012/059449 2011-05-31 2012-05-22 Ecran doté d'un émetteur optique intégré WO2012163725A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112012002330.7T DE112012002330A5 (de) 2011-05-31 2012-05-22 Display mit integriertem optischen Sender

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11168314.0 2011-05-31
EP11168314 2011-05-31

Publications (1)

Publication Number Publication Date
WO2012163725A1 true WO2012163725A1 (fr) 2012-12-06

Family

ID=46124375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059449 WO2012163725A1 (fr) 2011-05-31 2012-05-22 Ecran doté d'un émetteur optique intégré

Country Status (2)

Country Link
DE (1) DE112012002330A5 (fr)
WO (1) WO2012163725A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014017237A1 (de) 2014-11-21 2016-05-25 Mechaless Systems Gmbh Messsystem zur energiesparenden optischen Abstandsmessung
EP3124993A1 (fr) 2013-08-22 2017-02-01 ELMOS Semiconductor Aktiengesellschaft Dispositif a compensation de defaut destine a mesurer une voie d'acheminement de signaux optiques
DE102015121904A1 (de) * 2015-12-16 2017-06-22 Osram Oled Gmbh Optoelektronische Bauelementevorrichtung, Verfahren zum Herstellen einer optoelektronischen Bauelementevorrichtung und Verfahren zum Betreiben einer optoelektronischen Bauelementevorrichtung
CN108459723A (zh) * 2018-06-12 2018-08-28 上海永亚智能科技有限公司 一种红外手势识别装置和识别方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706848A1 (fr) 1994-03-29 1996-04-17 Fanuc Ltd. Machine d'electroerosion et procede d'utilisation
US20050122308A1 (en) * 2002-05-28 2005-06-09 Matthew Bell Self-contained interactive video display system
EP1671160A1 (fr) * 2003-10-08 2006-06-21 Mechaless Systems GmbH Procede pour determiner et/ou evaluer un signal optique differentiel
US20070200970A1 (en) * 2006-02-28 2007-08-30 Microsoft Corporation Uniform illumination of interactive display panel
US20090231497A1 (en) * 2008-03-14 2009-09-17 Samsung Electronics Co., Ltd. Liquid crystal display, display system including the liquid crystal display and method of recognizing an object using the liquid crystal display
WO2011160079A1 (fr) 2010-06-17 2011-12-22 Qualcomm Incorporated Procédés et appareils de reconnaissance de geste sans contact et de réduction de puissance

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706848A1 (fr) 1994-03-29 1996-04-17 Fanuc Ltd. Machine d'electroerosion et procede d'utilisation
US20050122308A1 (en) * 2002-05-28 2005-06-09 Matthew Bell Self-contained interactive video display system
EP1671160A1 (fr) * 2003-10-08 2006-06-21 Mechaless Systems GmbH Procede pour determiner et/ou evaluer un signal optique differentiel
EP1671160B1 (fr) 2003-10-08 2007-05-02 Mechaless Systems GmbH Procede pour determiner et/ou evaluer un signal optique differentiel
US20070200970A1 (en) * 2006-02-28 2007-08-30 Microsoft Corporation Uniform illumination of interactive display panel
US20090231497A1 (en) * 2008-03-14 2009-09-17 Samsung Electronics Co., Ltd. Liquid crystal display, display system including the liquid crystal display and method of recognizing an object using the liquid crystal display
WO2011160079A1 (fr) 2010-06-17 2011-12-22 Qualcomm Incorporated Procédés et appareils de reconnaissance de geste sans contact et de réduction de puissance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3124993A1 (fr) 2013-08-22 2017-02-01 ELMOS Semiconductor Aktiengesellschaft Dispositif a compensation de defaut destine a mesurer une voie d'acheminement de signaux optiques
DE102014017237A1 (de) 2014-11-21 2016-05-25 Mechaless Systems Gmbh Messsystem zur energiesparenden optischen Abstandsmessung
DE102015121904A1 (de) * 2015-12-16 2017-06-22 Osram Oled Gmbh Optoelektronische Bauelementevorrichtung, Verfahren zum Herstellen einer optoelektronischen Bauelementevorrichtung und Verfahren zum Betreiben einer optoelektronischen Bauelementevorrichtung
CN108459723A (zh) * 2018-06-12 2018-08-28 上海永亚智能科技有限公司 一种红外手势识别装置和识别方法
CN108459723B (zh) * 2018-06-12 2024-03-15 上海永亚智能科技有限公司 一种红外手势识别装置和识别方法

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