{"id":12314,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/technologie-lcd-jak-funguje-lcd-a-jaky-je-rozdil-mezi-led-a-lcd\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"technologie-lcd-jak-funguje-lcd-a-jaky-je-rozdil-mezi-led-a-lcd","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/technologie-lcd-jak-funguje-lcd-a-jaky-je-rozdil-mezi-led-a-lcd\/","title":{"rendered":"Technologie LCD. Jak funguje LCD a jak\u00fd je rozd\u00edl mezi LED a LCD?"},"content":{"rendered":"<div class=\"articlecontent\">Technologie displej\u016f z tekut\u00fdch krystal\u016f (LCD) se dnes hojn\u011b pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch p\u0159edm\u011btech na\u0161eho ka\u017edodenn\u00edho \u017eivota, v\u010detn\u011b chytr\u00fdch telefon\u016f, digit\u00e1ln\u00edch hodinek a televizor\u016f a po\u010d\u00edta\u010dov\u00fdch monitor\u016f. P\u0159em\u00fd\u0161leli jste v\u0161ak n\u011bkdy nad t\u00edm, jak LCD funguje nebo jak se od n\u011bj li\u0161\u00ed technologie LED? V tomto p\u0159\u00edsp\u011bvku prozkoum\u00e1me, jak LCD funguj\u00ed uvnit\u0159, probereme, \u010d\u00edm se LED a LCD li\u0161\u00ed, a pod\u00edv\u00e1me se na to, jak se LCD ovl\u00e1daj\u00ed. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Pro pochopen\u00ed fungov\u00e1n\u00ed LCD je nezbytn\u00e9 porozum\u011bt tekut\u00fdm krystal\u016fm. Unik\u00e1tn\u00ed miner\u00e1ly zn\u00e1m\u00e9 jako tekut\u00e9 krystaly maj\u00ed vlastnosti jak pevn\u00fdch l\u00e1tek, tak kapalin. P\u0159i vystaven\u00ed elektrick\u00e9mu poli maj\u00ed schopnost orientovat se ur\u010dit\u00fdm sm\u011brem. V LCD je vrstva tekut\u00fdch krystal\u016f um\u00edst\u011bna mezi dv\u011bma pr\u016fhledn\u00fdmi sklen\u011bn\u00fdmi deskami. Vn\u011bj\u0161\u00ed vrstvy sklen\u011bn\u00fdch desek jsou rovn\u011b\u017e pokryty pr\u016fhlednou elektrodou. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Kdy\u017e se na elektrody p\u0159ivede elektrick\u00fd proud, vytvo\u0159\u00ed se p\u0159es vrstvu tekut\u00fdch krystal\u016f elektrick\u00e9 pole. Kapaln\u00e9 krystaly jsou t\u00edmto polem nuceny se ur\u010dit\u00fdm zp\u016fsobem uspo\u0159\u00e1dat, a to tak, \u017ee bu\u010f propou\u0161t\u011bj\u00ed sv\u011btlo, nebo ho zcela blokuj\u00ed. Kapaln\u00e9 krystaly se jako clony st\u00e1\u010dej\u00ed nebo roztahuj\u00ed, aby regulovaly, kolik sv\u011btla m\u016f\u017ee proj\u00edt displejem. Grafika a barvy, kter\u00e9 vid\u00edme na LCD panelu, jsou mo\u017en\u00e9 d\u00edky t\u00e9to manipulaci se sv\u011btlem. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Nyn\u00ed probereme rozd\u00edl mezi LED a LCD. Light Emitting Diode, neboli LED, je term\u00edn pou\u017e\u00edvan\u00fd pro syst\u00e9m podsv\u00edcen\u00ed pou\u017e\u00edvan\u00fd v displej\u00edch LCD. V b\u011b\u017en\u00fdch LCD displej\u00edch jsou tekut\u00e9 krystaly osv\u011btlov\u00e1ny samostatn\u00fdm fluorescen\u010dn\u00edm podsv\u00edcen\u00edm. Zdroj sv\u011btla u LCD panel\u016f LED v\u0161ak tvo\u0159\u00ed soubor mal\u00fdch sv\u011bteln\u00fdch diod. D\u00edky tomu je mo\u017en\u00e9 l\u00e9pe \u0159\u00eddit jas, kontrast a energetickou \u00fa\u010dinnost. Displeje mohou b\u00fdt nyn\u00ed d\u00edky technologii LED leh\u010d\u00ed a ten\u010d\u00ed. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Obvody ovlada\u010d\u016f hraj\u00ed p\u0159i regulaci LCD displej\u016f z\u00e1sadn\u00ed roli. Elektrick\u00e9 pole, kter\u00e9 je aplikov\u00e1no na ka\u017ed\u00fd pixel LCD, je \u0159\u00edzeno obvody ovlada\u010de. T\u0159i subpixely, kter\u00e9 tvo\u0159\u00ed ka\u017ed\u00fd pixel, odpov\u00eddaj\u00ed t\u0159em z\u00e1kladn\u00edm barv\u00e1m: \u010derven\u00e9, zelen\u00e9 a modr\u00e9. Obvody ovlada\u010de mohou m\u011bnit intenzitu proch\u00e1zej\u00edc\u00edho sv\u011btla a vytv\u00e1\u0159et r\u016fzn\u00e9 barvy a odst\u00edny t\u00edm, \u017ee m\u011bn\u00ed nap\u011bt\u00ed p\u0159iv\u00e1d\u011bn\u00e9 na ka\u017ed\u00fd subpixel. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Obvody ovlada\u010de \u0159\u00edd\u00ed mikrokontrol\u00e9r nebo grafick\u00fd procesor (GPU), kter\u00fd p\u0159ij\u00edm\u00e1 obrazov\u00e1 data a pokyny ze zdrojov\u00e9ho za\u0159\u00edzen\u00ed, jako je po\u010d\u00edta\u010d nebo chytr\u00fd telefon. Obvody ovlada\u010de dost\u00e1vaj\u00ed ze zdrojov\u00e9ho za\u0159\u00edzen\u00ed pokyny, jak ovl\u00e1dat tekut\u00e9 krystaly, aby se na obrazovce zobrazil po\u017eadovan\u00fd obraz v nep\u0159etr\u017eit\u00e9m toku dat. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee obrazy, kter\u00e9 vid\u00edme na na\u0161ich displej\u00edch, jsou vytv\u00e1\u0159eny technologi\u00ed LCD pomoc\u00ed tekut\u00fdch krystal\u016f, elektrick\u00fdch pol\u00ed a podsv\u00edcen\u00ed. Zat\u00edmco jako zdroj sv\u011btla se pou\u017e\u00edvaj\u00ed sv\u011bteln\u00e9 diody, LED LCD panely poskytuj\u00ed lep\u0161\u00ed jas, kontrast a energetickou \u00faspornost. Tekut\u00e9 krystaly jsou manipulov\u00e1ny obvody ovlada\u010de, kter\u00e9 jsou \u0159\u00edzeny mikrokontrol\u00e9rem nebo grafick\u00fdm procesorem, aby zobrazovaly obraz a barvy v souladu se vstupn\u00edmi daty. Panely, kter\u00e9 denn\u011b pou\u017e\u00edv\u00e1me, m\u016f\u017eeme l\u00e9pe ocenit, pokud si uv\u011bdom\u00edme, jak technologie LCD funguje.<\/p><\/div>\n<div class=\"questions\">\n<div class=\"questionstitle\">FAQ<\/div>\n<div class=\"question\">\n<div class=\"qtitle\"> Jak\u00e9 jsou vlastnosti LCD?<\/div>\n<p> V\u0161udyp\u0159\u00edtomnou zobrazovac\u00ed technologi\u00ed, kterou m\u016f\u017eeme vid\u011bt v elektronick\u00fdch za\u0159\u00edzen\u00edch, jako jsou televizory, po\u010d\u00edta\u010dov\u00e9 monitory a chytr\u00e9 telefony, je LCD neboli displej z tekut\u00fdch krystal\u016f. Zde jsou uvedeny n\u011bkter\u00e9 z\u00e1kladn\u00ed vlastnosti LCD: Tekut\u00e9 krystaly: LCD panely se skl\u00e1daj\u00ed ze dvou polarizovan\u00fdch sklen\u011bn\u00fdch panel\u016f a vrstvy tekut\u00fdch krystal\u016f um\u00edst\u011bn\u00e9 mezi nimi. D\u00edky zvl\u00e1\u0161tn\u00ed vlastnosti mohou tyto tekut\u00e9 krystaly v reakci na elektrick\u00fd proud m\u011bnit svou chemickou konfiguraci. 2. Modulace sv\u011btla: LCD displeje funguj\u00ed tak, \u017ee se m\u011bn\u00ed mno\u017estv\u00ed sv\u011btla, kter\u00e9 dopad\u00e1 na jejich tekut\u00e9 krystaly. Kapaln\u00e9 krystaly se vyrovn\u00e1vaj\u00ed a \u0159\u00edd\u00ed, kolik sv\u011btla projde displejem, kdy\u017e je p\u0159iveden elektrick\u00fd proud. 3. Podsv\u00edcen\u00ed: Pro zaji\u0161t\u011bn\u00ed osv\u011btlen\u00ed v\u011bt\u0161iny obrazovek LCD je za panelem um\u00edst\u011bn zdroj podsv\u00edcen\u00ed. Obraz na obrazovce je vytv\u00e1\u0159en podsv\u00edcen\u00edm, kter\u00e9 proch\u00e1z\u00ed tekut\u00fdmi krystaly. 4. Reprodukce barev: Pomoc\u00ed barevn\u00fdch filtr\u016f mohou panely LCD reprodukovat r\u016fzn\u00e9 barvy. P\u0159i pr\u016fchodu ur\u010dit\u00fdch vlnov\u00fdch d\u00e9lek sv\u011btla t\u011bmito filtry vznikaj\u00ed r\u016fzn\u00e9 barvy. 5. Energetick\u00e1 \u00fa\u010dinnost: LCD je energeticky \u00fasporn\u011bj\u0161\u00ed ne\u017e jin\u00e9 zobrazovac\u00ed technologie, nap\u0159\u00edklad CRT (katodov\u00e9 trubice). To proto, aby se sn\u00ed\u017eila spot\u0159eba energie. LCD obrazovky mohou selektivn\u011b regulovat podsv\u00edcen\u00ed a ke sv\u00e9 funkci nepot\u0159ebuj\u00ed vysok\u00e9 nap\u011bt\u00ed. Panely LCD jsou \u010dasto mal\u00e9 a lehk\u00e9, co\u017e je p\u0159edur\u010duje k pou\u017eit\u00ed v p\u0159enosn\u00fdch za\u0159\u00edzen\u00edch, jako jsou notebooky a chytr\u00e9 telefony. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> 6. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> A\u010dkoli technologie LCD nab\u00edz\u00ed dobrou kvalitu obrazu a reprodukci barev, m\u00e1 zna\u010dn\u00e9 nev\u00fdhody, v\u010detn\u011b omezen\u00fdch pozorovac\u00edch \u00fahl\u016f a pomalej\u0161\u00ed doby odezvy ve srovn\u00e1n\u00ed s jin\u00fdmi zobrazovac\u00edmi technologiemi, nap\u0159\u00edklad OLED (Organic Light Emitting Diode). <\/p>\n<\/div>\n<div class=\"question\">\n<div class=\"qtitle\"> Pro\u010d je LCD lep\u0161\u00ed ne\u017e LED?<\/div>\n<p> V porovn\u00e1n\u00ed s technologi\u00ed LED (Light Emitting Diode) je technologie LCD (Liquid Crystal Display) v \u0159ad\u011b ohled\u016f lep\u0161\u00ed. Zde je n\u011bkolik argument\u016f ve prosp\u011bch LCD oproti LED: Kvalita obrazu je na obrazovk\u00e1ch LCD \u010dasto lep\u0161\u00ed, zejm\u00e9na pokud jde o p\u0159esnost barev a celkovou \u010distotu obrazu. V\u011bt\u0161\u00ed barevn\u00fd gamut, kter\u00fd mohou displeje LCD zobrazit, zaji\u0161\u0165uje \u017eiv\u011bj\u0161\u00ed a realisti\u010dt\u011bj\u0161\u00ed obraz. Oproti obrazovk\u00e1m LED maj\u00ed obrazovky LCD \u010dasto vy\u0161\u0161\u00ed pozorovac\u00ed \u00fahly. To znamen\u00e1, \u017ee displej LCD je vhodn\u00fd pro v\u011bt\u0161\u00ed publikum nebo v\u00edce div\u00e1k\u016f, proto\u017ee obraz na n\u011bm si zachov\u00e1v\u00e1 konzistenci a p\u0159i sledov\u00e1n\u00ed z r\u016fzn\u00fdch \u00fahl\u016f se v\u00fdrazn\u011b nezhor\u0161uje. 3. Energetick\u00e1 \u00fa\u010dinnost: LCD obrazovky obvykle spot\u0159ebov\u00e1vaj\u00ed m\u00e9n\u011b energie ne\u017e LED obrazovky, zejm\u00e9na u v\u011bt\u0161\u00edch displej\u016f. Ve srovn\u00e1n\u00ed s obrazovkami LED pot\u0159ebuj\u00ed panely LCD k dosa\u017een\u00ed stejn\u00e9ho jasu m\u00e9n\u011b energie, co\u017e m\u016f\u017ee v pr\u016fb\u011bhu \u010dasu u\u0161et\u0159it mnoho energie. 4. N\u00e1klady: LCD technologie je obvykle cenov\u011b dostupn\u011bj\u0161\u00ed ne\u017e LED technologie, zejm\u00e9na u v\u011bt\u0161\u00edch velikost\u00ed panel\u016f. Je to d\u00e1no t\u00edm, \u017ee v\u00fdroba LCD panel\u016f je zaveden\u011bj\u0161\u00ed a b\u011b\u017en\u011bj\u0161\u00ed postup, co\u017e sni\u017euje v\u00fdrobn\u00ed n\u00e1klady. 5. Del\u0161\u00ed \u017eivotnost: LCD displeje maj\u00ed obvykle del\u0161\u00ed \u017eivotnost ne\u017e displeje LED. U LCD panel\u016f je jednodu\u0161\u0161\u00ed vym\u011bnit podsv\u00edcen\u00ed, proto\u017ee je odli\u0161n\u00e9 od vrstvy tekut\u00fdch krystal\u016f. Sv\u011bteln\u00e9 diody v panelech LED se mohou \u010dasem zhor\u0161it, co\u017e vede ke sn\u00ed\u017een\u00ed jasu obrazovky a celkov\u00e9ho v\u00fdkonu. <\/p>\n<div class=\"newlinediv\"><\/div>\n<p> Je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee i kdy\u017e m\u00e1 technologie LCD sv\u00e9 v\u00fdhody, technologie LED m\u00e1 tak\u00e9 n\u011bkter\u00e9 p\u0159ednosti, v\u010detn\u011b ten\u010d\u00edch displej\u016f a v\u011bt\u0161\u00edho kontrastn\u00edho pom\u011bru. O tom, zda pou\u017e\u00edt displej LCD nebo LED, nakonec rozhoduj\u00ed jedine\u010dn\u00e9 pot\u0159eby a preference u\u017eivatele.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Technologie displej\u016f z tekut\u00fdch krystal\u016f (LCD) se dnes hojn\u011b pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch p\u0159edm\u011btech na\u0161eho ka\u017edodenn\u00edho \u017eivota, v\u010detn\u011b chytr\u00fdch telefon\u016f, digit\u00e1ln\u00edch hodinek a televizor\u016f a po\u010d\u00edta\u010dov\u00fdch monitor\u016f. P\u0159em\u00fd\u0161leli jste v\u0161ak n\u011bkdy nad t\u00edm, jak LCD funguje nebo jak se od n\u011bj li\u0161\u00ed technologie LED? V tomto p\u0159\u00edsp\u011bvku prozkoum\u00e1me, jak LCD funguj\u00ed uvnit\u0159, probereme, \u010d\u00edm se LED &#8230; <a title=\"Technologie LCD. Jak funguje LCD a jak\u00fd je rozd\u00edl mezi LED a LCD?\" class=\"read-more\" href=\"https:\/\/tech-lib.eu\/tech\/technologie-lcd-jak-funguje-lcd-a-jaky-je-rozdil-mezi-led-a-lcd\/\" aria-label=\"\u010c\u00edst v\u00edce o Technologie LCD. Jak funguje LCD a jak\u00fd je rozd\u00edl mezi LED a LCD?\">\u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":4004,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4679],"tags":[],"class_list":["post-12314","post","type-post","status-publish","format-standard","hentry","category-technologie-displeje"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/12314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/users\/4004"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=12314"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/12314\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=12314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=12314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=12314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}