Source: http://www.google.de/patents/US7626575?hl=de
Timestamp: 2013-05-24 07:00:36
Document Index: 12015159

Matched Legal Cases: ['Application No. 2003', 'Application No. 2003', 'Application No. 2003', 'Application No. 2003', 'Application No. 2003', 'Application No. 2003']

Patent US7626575 - Light pen - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteA photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body...http://www.google.de/patents/US7626575?utm_source=gb-gplus-sharePatent US7626575 - Light pen Ver�ffentlichungsnummerUS7626575 B2PublikationstypErteilung Anmeldenummer10/805,961 Ver�ffentlichungsdatum1. Dez. 2009Eingetragen22. M�rz 2004 Priorit�tsdatum28. M�rz 2003Auch ver�ffentlicht unterUS20040189621US20100039408WO2004086215A2WO2004086215A3WO2004086215A8 ErfinderJong-Whan ChoJae-Hoon JungHyung-Guel KimSang-jin ParkWon-Sang ParkKee-han UhUrspr�nglich Bevollm�chtigterSamsung Electronics Co., Ltd. US-Klassifikation345/173345/182345/183345/180345/181Internationale KlassifikationG09G5/00G06F3/033 UnternehmensklassifikationG06F3/03545 Europ�ische KlassifikationG06F3/0354NReferenzenPatentzitate (21)Nichtpatentzitate (1) Referenziert von (4)Externe LinksUSPTO USPTO-Zuordnung EspacenetLight penUS 7626575 B2 Zusammenfassung A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.
4. The light pen of claim 1, wherein the light generating module includes a light emitting diode or a semiconductor laser beam generator. Beschreibung
CROSS-REFERENCE TO RELATED APPLICATIONS This application relies for priority upon Korean Patent Application No. 2003-19603 filed on Mar. 28, 2003, Korean Patent Application No. 2003-24382 filed on Apr. 17, 2003, and Korean Patent Application No. 2003-39340 filed on Jun. 18, 2003, the contents of which are herein incorporated by reference in their entirety.
SUMMARY OF THE INVENTION Accordingly, the present invention is provided for substantially obviate one or more problems due to limitations and disadvantages of the related art.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantage points of the present invention will become more apparent by describing in detailed exemplary embodiments thereof with reference to the accompanying drawings, in which:
FIG. 5 is a partially enlarged view showing �A� of FIG. 4;
FIG. 20 is a partially enlarged view showing �A� of FIG. 19;
DESCRIPTION OF EXEMPLARY EMBODIMENTS Detailed illustrative embodiments of the present invention are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing exemplary embodiments of the present invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Embodiment 1 of a Light Pen FIG. 1 is a schematic view showing a light pen according to a first exemplary embodiment of the present invention.
Embodiment 2 of a Light Pen FIG. 2 is a schematic view showing a light pen according to a second exemplary embodiment of the present invention. In embodiment 2, all elements except the light generating module denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 3 of a Light Pen FIG. 4 is a schematic view showing a light pen according to a third exemplary embodiment of the present invention, and FIG. 5 is a partially enlarged view showing �A� of FIG. 4. In embodiment 3, all elements except the light concentrating cover denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 4 of a Light Pen FIG. 6 is a schematic view showing a light pen according to a fourth exemplary embodiment of the present invention. In embodiment 4, all elements except a tip and switch denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 5 of a Light Pen FIG. 7 is a schematic view showing a light pen according to a fifth exemplary embodiment of the present invention. In embodiment 5, all elements except a light concentrating member denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 6 of a Light Pen FIG. 8 is a schematic view showing a light pen according to a sixth exemplary embodiment of the present invention. In embodiment 6, all elements except a driving pulse generating module denote the same elements in embodiment 4, and will not be further described below to avoid a redundancy.
Embodiment 7 of a Light Pen FIG. 11 is a graph showing first and second driving power pulses generated from a driving pulse generating module according to a seventh exemplary embodiment of the present invention. In embodiment 7, all elements except the pulses generated from the driving pulse generating module denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
The light generating module 140 generates a fourth sensing light 142 d for substantially the second time period T2 in response to the second pulse 138 generated from the driving pulse generating module 135. The fourth sensing light 142 d flickers with substantially the second frequency for substantially the second time period T2. The brightness of the fourth sensing light 142 d is larger than that of the third sensing light 142 c. According to above embodiment, the light pen generates light having frequencies and brightness different from those of sun light or indoor lightning, so that the photo detective element of the display device effectively recognizes the light generated from the light pen.
Embodiment 8 of a Light Pen FIG. 13 is a partial cross-sectional perspective view showing a light pen according to an eighth exemplary embodiment of the present invention.
Embodiment 1 of a Photo Detective Liquid Crystal Display Device FIG. 14 is a schematic view showing a photo detective liquid crystal display device according to one example of the present invention, and FIG. 15 is a schematic view showing a photo detective liquid crystal display panel according to one example of the present invention.
Since the configuration and function of the photo detective element 270 is disclosed in detail in KR Patent Application No. 2003-12768 (entitled �Liquid crystal display device and method of manufacturing the same�), detailed description will not be shown below. According to the KR Patent Application No. 2003-12768, the photo detective element includes a sensing thin film transistor and a switching thin film transistor. The sensing thin film transistor receives light generated from external source, and the switching thin film transistor receives the output of the sensing thin film transistor and generates the second sensing signal (Ss2). The photo detective element 270 generates the second sensing signal (Ss2) in response to the light generated from external source, for example, the sensing light 142 generated from the light pen 100. The second sensing signal includes position information, and the position information has a position to which the sensing light 142 is incident. Above mentioned KR Patent Application No. 2003-12768 is incorporated hereby.
Embodiment 2 of a Photo Detective Liquid Crystal Display Device FIG. 16 is a schematic view showing a photo detective liquid crystal display device according to another example of the present invention. In embodiment 2, all descriptions except a method of supplying driving power signal to the light pen are the same as embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 3 of a Photo Detective Liquid Crystal Display Device FIG. 17 is a schematic view showing a photo detective liquid crystal display device according to still another example of the present invention, and FIG. 18 is a schematic view showing a photo detective liquid crystal display device and a light pen. In embodiment 3, all elements except the comparator module installed in the sensed signal processing unit denote the same elements in embodiment 1, and will not be further described below to avoid a redundancy.
Embodiment 4 of a Photo Detective Liquid Crystal Display Device FIG. 19 is a partial cross-sectional perspective view showing a photo detective liquid crystal display device according to one example of the present invention, FIG. 20 is a partially enlarged view showing �A� of FIG. 19, and FIG. 21 is a cross-sectional view taken along the line III-III of FIG. 19.
Embodiment 5 of a Photo Detective Liquid Crystal Display Device FIG. 23 is a cross-sectional view showing pixel region of the photo detective liquid crystal display device according to one exemplary embodiment of the present invention, and FIG. 24 is a cross-sectional view showing photo detective element of the photo detective liquid crystal display device according to one exemplary embodiment of the present invention. In embodiment 5, all descriptions except that the black matrix pattern is formed on the second substrate are the same as embodiment 4, and will not be further described below to avoid a redundancy.
Patentzitate Zitiertes PatentEingetragen Ver�ffentlichungsdatum Antragsteller TitelUS362648316. Juli 19697. Dez. 1971Science Accessories Corp.Spark penUS391127028. Aug. 19747. Okt. 1975Identicon CorporationLight pen readingUS434524812. Dez. 198017. Aug. 1982Citizen Watch Company LimitedLiquid crystal display device with write-in capabilityUS44544175. Febr. 198212. Juni 1984George A. MayHigh resolution light pen for use with graphic displaysUS516656827. Juni 199124. Nov. 1992Whirlpool CorporationPSC motor for automatic washerUS516666810. Apr. 199124. Nov. 1992Data Stream CorporationWireless pen-type input device for use with a computerUS55682926. Nov. 199522. Okt. 1996Goldstar Co., Ltd.Position-sensitive liquid crystal display and process for producing the sameUS575145323. Okt. 199512. Mai 1998Ncr CorporationLiquid crystal display with pen-input capabilityUS63772499. Nov. 199823. Apr. 2002Excel TechElectronic light pen systemUS65291898. Febr. 20004. M�rz 2003International Business Machines CorporationTouch screen stylus with IR-coupled selection buttonsUS668657922. Apr. 20003. Febr. 2004International Business Machines CorporationDigital pen using speckle trackingUS678919123. Mai 20007. Sept. 2004Silverbrook Research Pty LtdInteractive device network registration protocolUS700608019. Febr. 200228. Febr. 2006Palm, Inc.Display systemUS200200212912. Nov. 200121. Febr. 2002Cook Brandt A.Stylus with light emitting diodeUS2003011222011. Apr. 200219. Juni 2003Finger System Inc.Pen type optical mouse device and method of controlling the sameUS200301469064. Febr. 20027. Aug. 2003Waltop International Corp.Tracking and pressure-sensitive digital penEP0109832A216. Nov. 198330. Mai 1984Kabushiki Kaisha ToshibaPanel displayEP0601837A27. Dez. 199315. Juni 1994Sharp Kabushiki KaishaImage input device-integrated type display deviceJP2050216A Titel nicht verf�gbarJP10091343A Titel nicht verf�gbarJP10283113A Titel nicht verf�gbarNichtpatentzitateReferenz1PCT International Search Report; International application No. PCT/KR2004/000639; International filing date: Mar. 24, 2004; Date of Mailing: Sep. 1, 2004. Referenziert von Zitiert von PatentEingetragen Ver�ffentlichungsdatum Antragsteller TitelUS813904119. Dez. 200820. M�rz 2012Hydis Technologies Co., Ltd.Liquid crystal display having touch screen function using photoconductorUS2009014719114. M�rz 200811. Juni 2009Sony CorporationDisplay apparatusUS2010009098419. Dez. 200815. Apr. 2010Hydis Technologies Co., Ltd.Liquid Crystal Display Having Touch Screen Function Using PhotoconductorUS2011019813422. Juli 201018. Aug. 2011Benq CorporationLight penDrehenOriginalbildGoogle-Startseite - Sitemap - USPTO-Bulk-Downloads - Datenschutzerkl�rung - Nutzungsbedingungen - �ber Google Patente - Feedback gebenDaten bereitgestellt von IFI CLAIMS Patent Services.© 2012 Google