DISPLAY DEVICE
In a liquid crystal display device (10), it is determined whether or not a panel temperature (Tp) sensed by a temperature sensor (16) is higher than a predetermined temperature. As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is out...
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| creator | FURUKAWA, TOMOO HIRAO,KAZUMA OKUNO, HIROKAZU |
| description | In a liquid crystal display device (10), it is determined whether or not a panel temperature (Tp) sensed by a temperature sensor (16) is higher than a predetermined temperature. As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is output to a digital gamma conversion part (22). The digital gamma conversion part (22) performs gamma conversion using an LUT (12) on the video signal (V1). The LUT (12) to be used for the gamma conversion stores a result of gamma conversion of obtaining brightness by multiplying brightness corresponding to low gradation-side input gradations by a predetermined magnification. This gamma conversion is allowed to enhance the brightness corresponding to the low gradation-side input gradations of the video signal (V1), and therefore is allowed to improve a response speed of a liquid crystal. Moreover, when the panel temperature (Tp) is higher than the predetermined temperature, the response speed of the liquid crystal is fast. Therefore, the video signal (V1) is output to a timing control part (24) without being subjected to the gamma conversion. |
| format | Patent |
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As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is output to a digital gamma conversion part (22). The digital gamma conversion part (22) performs gamma conversion using an LUT (12) on the video signal (V1). The LUT (12) to be used for the gamma conversion stores a result of gamma conversion of obtaining brightness by multiplying brightness corresponding to low gradation-side input gradations by a predetermined magnification. This gamma conversion is allowed to enhance the brightness corresponding to the low gradation-side input gradations of the video signal (V1), and therefore is allowed to improve a response speed of a liquid crystal. Moreover, when the panel temperature (Tp) is higher than the predetermined temperature, the response speed of the liquid crystal is fast. Therefore, the video signal (V1) is output to a timing control part (24) without being subjected to the gamma conversion.</description><language>eng ; fre ; ger</language><subject>ADVERTISING ; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION ; CRYPTOGRAPHY ; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ; DISPLAY ; EDUCATION ; FREQUENCY-CHANGING ; NON-LINEAR OPTICS ; OPTICAL ANALOGUE/DIGITAL CONVERTERS ; OPTICAL LOGIC ELEMENTS ; OPTICS ; PHYSICS ; SEALS ; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20121107&DB=EPODOC&CC=EP&NR=2521120A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20121107&DB=EPODOC&CC=EP&NR=2521120A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FURUKAWA, TOMOO</creatorcontrib><creatorcontrib>HIRAO,KAZUMA</creatorcontrib><creatorcontrib>OKUNO, HIROKAZU</creatorcontrib><title>DISPLAY DEVICE</title><description>In a liquid crystal display device (10), it is determined whether or not a panel temperature (Tp) sensed by a temperature sensor (16) is higher than a predetermined temperature. As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is output to a digital gamma conversion part (22). The digital gamma conversion part (22) performs gamma conversion using an LUT (12) on the video signal (V1). The LUT (12) to be used for the gamma conversion stores a result of gamma conversion of obtaining brightness by multiplying brightness corresponding to low gradation-side input gradations by a predetermined magnification. This gamma conversion is allowed to enhance the brightness corresponding to the low gradation-side input gradations of the video signal (V1), and therefore is allowed to improve a response speed of a liquid crystal. Moreover, when the panel temperature (Tp) is higher than the predetermined temperature, the response speed of the liquid crystal is fast. 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As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is output to a digital gamma conversion part (22). The digital gamma conversion part (22) performs gamma conversion using an LUT (12) on the video signal (V1). The LUT (12) to be used for the gamma conversion stores a result of gamma conversion of obtaining brightness by multiplying brightness corresponding to low gradation-side input gradations by a predetermined magnification. This gamma conversion is allowed to enhance the brightness corresponding to the low gradation-side input gradations of the video signal (V1), and therefore is allowed to improve a response speed of a liquid crystal. Moreover, when the panel temperature (Tp) is higher than the predetermined temperature, the response speed of the liquid crystal is fast. Therefore, the video signal (V1) is output to a timing control part (24) without being subjected to the gamma conversion.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | DISPLAY DEVICE |
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