本發明涉及(ji)顯示(shi)領域,具體涉及(ji)一種(zhong)背光模組及(ji)液晶(jing)顯示(shi)裝置。
背景技術:
lcd(liquidcrystaldisplay,液晶(jing)顯示裝置)的(de)背光(guang)模組(backlightmodule)包括兩種入光(guang)方式(shi),分別為側入光(guang)式(shi)和直下(xia)光(guang)式(shi)。
如(ru)圖(tu)1所示(shi),在(zai)側(ce)入(ru)光(guang)(guang)式背光(guang)(guang)模組的(de)(de)結構設計中,光(guang)(guang)源11設置(zhi)于導(dao)光(guang)(guang)板(ban)12的(de)(de)側(ce)方(fang),光(guang)(guang)源11發出(chu)的(de)(de)光(guang)(guang)從導(dao)光(guang)(guang)板(ban)12的(de)(de)入(ru)光(guang)(guang)面(mian)進入(ru)導(dao)光(guang)(guang)板(ban)12,并在(zai)其內部經過漫反射(she)后從出(chu)光(guang)(guang)面(mian)射(she)出(chu),再經由各種光(guang)(guang)學膜片(pian)(pian)13,例如(ru)擴(kuo)散片(pian)(pian)和(he)棱鏡(jing)片(pian)(pian),形成(cheng)均勻的(de)(de)面(mian)光(guang)(guang)源并提供給液晶(jing)面(mian)板(ban)14。
如(ru)圖2所(suo)示,在(zai)直下光(guang)(guang)式背光(guang)(guang)模(mo)組(zu)的結構設計中,光(guang)(guang)源(yuan)21設置(zhi)于導光(guang)(guang)板22的下方,光(guang)(guang)源(yuan)21發出的光(guang)(guang)經過導光(guang)(guang)板22和各(ge)種光(guang)(guang)學(xue)膜(mo)片23后(hou)形成均勻的面光(guang)(guang)源(yuan),并提(ti)供(gong)給液(ye)晶(jing)面板24。
可見,現有(you)的(de)(de)背光(guang)模組均需要光(guang)學(xue)膜片以提高光(guang)源11的(de)(de)亮度與均齊度,但光(guang)學(xue)膜片的(de)(de)設置不利于背光(guang)成本的(de)(de)降(jiang)低(di)。
技術實現要素:
有鑒(jian)于(yu)(yu)此,本發(fa)明提供一種背光(guang)模(mo)組(zu)及液晶(jing)顯示裝置,能夠(gou)減(jian)少背光(guang)所需的光(guang)學膜片,有利于(yu)(yu)降低背光(guang)成本。
本發明一(yi)實(shi)施(shi)例(li)的(de)背(bei)光(guang)模組,包(bao)(bao)括(kuo)背(bei)板(ban)(ban)、導光(guang)板(ban)(ban)和(he)光(guang)源,背(bei)板(ban)(ban)包(bao)(bao)括(kuo)豎直板(ban)(ban)體(ti)(ti)(ti)和(he)傾(qing)(qing)斜板(ban)(ban)體(ti)(ti)(ti),豎直板(ban)(ban)體(ti)(ti)(ti)的(de)一(yi)端和(he)傾(qing)(qing)斜板(ban)(ban)體(ti)(ti)(ti)的(de)一(yi)端相(xiang)固(gu)(gu)定(ding),傾(qing)(qing)斜板(ban)(ban)體(ti)(ti)(ti)的(de)另一(yi)端用于與(yu)液晶面(mian)(mian)板(ban)(ban)固(gu)(gu)定(ding),豎直板(ban)(ban)體(ti)(ti)(ti)與(yu)液晶面(mian)(mian)板(ban)(ban)平行間(jian)隔設(she)(she)置(zhi),傾(qing)(qing)斜板(ban)(ban)體(ti)(ti)(ti)和(he)豎直板(ban)(ban)體(ti)(ti)(ti)的(de)夾(jia)角為鈍(dun)角,導光(guang)板(ban)(ban)和(he)光(guang)源設(she)(she)置(zhi)于豎直板(ban)(ban)體(ti)(ti)(ti)和(he)液晶面(mian)(mian)板(ban)(ban)之間(jian),傾(qing)(qing)斜板(ban)(ban)體(ti)(ti)(ti)朝向(xiang)導光(guang)板(ban)(ban)的(de)一(yi)側(ce)設(she)(she)置(zhi)有(you)反射片,所(suo)述(shu)導光(guang)板(ban)(ban)包(bao)(bao)括(kuo)入光(guang)面(mian)(mian)、與(yu)所(suo)述(shu)入光(guang)面(mian)(mian)垂直連接(jie)的(de)出光(guang)面(mian)(mian)、以及與(yu)所(suo)述(shu)出光(guang)面(mian)(mian)相(xiang)對(dui)設(she)(she)置(zhi)的(de)底(di)面(mian)(mian),所(suo)述(shu)底(di)面(mian)(mian)設(she)(she)置(zhi)有(you)均勻分布的(de)網點,光(guang)源與(yu)入光(guang)面(mian)(mian)鄰近(jin)設(she)(she)置(zhi),出光(guang)面(mian)(mian)上(shang)設(she)(she)置(zhi)有(you)多個透(tou)鏡。
本發明一實(shi)施例的液晶顯示裝置(zhi),包(bao)括上述背光模組。
有益(yi)效果:本發明設(she)計光(guang)源發出的(de)(de)光(guang)經過導光(guang)板(ban)(ban)之后(hou),再經過傾斜板(ban)(ban)體的(de)(de)反(fan)射片(pian)(pian)(pian)才會進入液晶(jing)面板(ban)(ban),增大(da)混光(guang)距離,能(neng)夠避免出現(xian)(xian)網(wang)點mura(光(guang)斑(ban))現(xian)(xian)象(xiang),導光(guang)板(ban)(ban)底面的(de)(de)網(wang)點對(dui)進入導光(guang)板(ban)(ban)內的(de)(de)光(guang)進行(xing)漫反(fan)射,能(neng)夠實現(xian)(xian)擴散片(pian)(pian)(pian)的(de)(de)均光(guang)作用,導光(guang)板(ban)(ban)的(de)(de)透(tou)鏡對(dui)出射的(de)(de)光(guang)進行(xing)折(zhe)射以提高背光(guang)亮度,能(neng)夠實現(xian)(xian)棱(leng)鏡片(pian)(pian)(pian)的(de)(de)集(ji)光(guang)作用,從(cong)而(er)無需設(she)置(zhi)擴散片(pian)(pian)(pian)和棱(leng)鏡片(pian)(pian)(pian),減少背光(guang)所需的(de)(de)光(guang)學(xue)膜片(pian)(pian)(pian),有利于降低背光(guang)成本。
附圖說明
圖1是現有技(ji)術中具有側入光(guang)式背光(guang)模組的lcd的結構剖(pou)視圖;
圖2是現有技(ji)術中具有直下光式背光模組的(de)lcd的(de)結構剖(pou)視圖;
圖(tu)3是本發(fa)明(ming)的液晶顯(xian)示裝置一實施例的結(jie)構剖視圖(tu);
圖(tu)(tu)4是圖(tu)(tu)3所示背光模組的導光板的結構剖視圖(tu)(tu)。
具體實施方式
下面將結合本(ben)(ben)(ben)發明(ming)實(shi)施(shi)例中的(de)(de)附圖,對本(ben)(ben)(ben)發明(ming)所提供的(de)(de)各個(ge)示例性的(de)(de)實(shi)施(shi)例的(de)(de)技(ji)術(shu)(shu)方(fang)案進行清楚、完整地描(miao)述。在不(bu)沖突(tu)的(de)(de)情(qing)況下,下述各個(ge)實(shi)施(shi)例及本(ben)(ben)(ben)發明(ming)所述技(ji)術(shu)(shu)特征可以相互組(zu)合。并(bing)且,本(ben)(ben)(ben)發明(ming)全文所采用的(de)(de)方(fang)向性術(shu)(shu)語,例如“左(zuo)”、“右(you)”等,均(jun)是(shi)為了(le)更(geng)好的(de)(de)描(miao)述各個(ge)實(shi)施(shi)例,并(bing)非用于限制本(ben)(ben)(ben)發明(ming)的(de)(de)保護范(fan)圍。
請(qing)參閱(yue)圖3,為本發明一實施例的(de)液(ye)晶(jing)顯示裝置。液(ye)晶(jing)顯示裝置30包括背(bei)(bei)光模組以及設置于背(bei)(bei)光模組的(de)出光方向上(shang)的(de)液(ye)晶(jing)面(mian)板(ban)(ban)(ban)50,該背(bei)(bei)光模組用于提供液(ye)晶(jing)面(mian)板(ban)(ban)(ban)50顯示畫面(mian)所(suo)需(xu)的(de)背(bei)(bei)光,其(qi)包括背(bei)(bei)板(ban)(ban)(ban)41以及承載(zai)于背(bei)(bei)板(ban)(ban)(ban)41上(shang)的(de)光源(yuan)42、導(dao)光板(ban)(ban)(ban)43、反射片44。
背(bei)板(ban)(ban)(ban)(ban)41包(bao)括豎(shu)(shu)直板(ban)(ban)(ban)(ban)體(ti)(ti)411和傾斜板(ban)(ban)(ban)(ban)體(ti)(ti)412,如圖(tu)3所示,豎(shu)(shu)直板(ban)(ban)(ban)(ban)體(ti)(ti)411沿豎(shu)(shu)直方向延伸設置(zhi),豎(shu)(shu)直板(ban)(ban)(ban)(ban)體(ti)(ti)411與液晶面板(ban)(ban)(ban)(ban)50平行間隔設置(zhi),傾斜板(ban)(ban)(ban)(ban)體(ti)(ti)412和豎(shu)(shu)直板(ban)(ban)(ban)(ban)體(ti)(ti)411的夾角為鈍(dun)角。豎(shu)(shu)直板(ban)(ban)(ban)(ban)體(ti)(ti)411的一(yi)(yi)端(duan)和傾斜板(ban)(ban)(ban)(ban)體(ti)(ti)412的一(yi)(yi)端(duan)相固定,傾斜板(ban)(ban)(ban)(ban)體(ti)(ti)412的另一(yi)(yi)端(duan)用于與液晶面板(ban)(ban)(ban)(ban)50相固定,傾斜板(ban)(ban)(ban)(ban)體(ti)(ti)412朝向導光板(ban)(ban)(ban)(ban)43的一(yi)(yi)側設置(zhi)有反射片44。
當(dang)然(ran),背(bei)板(ban)(ban)(ban)(ban)(ban)(ban)41還可(ke)以(yi)設置(zhi)(zhi)有與豎直(zhi)(zhi)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)411相(xiang)垂直(zhi)(zhi)的(de)水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413,該(gai)水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413的(de)一端與豎直(zhi)(zhi)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)411相(xiang)固定,水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413的(de)另一端用于與液晶面板(ban)(ban)(ban)(ban)(ban)(ban)50相(xiang)固定。該(gai)水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413可(ke)用于承載并固定導光(guang)板(ban)(ban)(ban)(ban)(ban)(ban)43和光(guang)源42,并且,水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413朝向(xiang)導光(guang)板(ban)(ban)(ban)(ban)(ban)(ban)43的(de)一側(ce)也可(ke)以(yi)設置(zhi)(zhi)有反射(she)片44。進一步地,背(bei)光(guang)模組的(de)散(san)熱板(ban)(ban)(ban)(ban)(ban)(ban)45和驅(qu)(qu)動電(dian)路(lu)可(ke)以(yi)固定于水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413背(bei)向(xiang)導光(guang)板(ban)(ban)(ban)(ban)(ban)(ban)43的(de)一側(ce),該(gai)驅(qu)(qu)動電(dian)路(lu)可(ke)以(yi)為fpcb(flexibleprintedcircuitboard,柔性印刷(shua)電(dian)路(lu)板(ban)(ban)(ban)(ban)(ban)(ban)),并且其(qi)固定于散(san)熱板(ban)(ban)(ban)(ban)(ban)(ban)45上,例如驅(qu)(qu)動電(dian)路(lu)固定于散(san)熱板(ban)(ban)(ban)(ban)(ban)(ban)45背(bei)向(xiang)水(shui)(shui)平(ping)板(ban)(ban)(ban)(ban)(ban)(ban)體(ti)413的(de)一側(ce)。
在背(bei)光(guang)模(mo)(mo)組(zu)的(de)(de)(de)(de)工作過(guo)程中,驅動(dong)電(dian)路用于(yu)控制(zhi)光(guang)源(yuan)42的(de)(de)(de)(de)開(kai)關及(ji)亮度,散熱板(ban)(ban)45用于(yu)對(dui)光(guang)源(yuan)42、驅動(dong)電(dian)路等產生的(de)(de)(de)(de)熱進行快速(su)散發。并且,由于(yu)驅動(dong)電(dian)路固(gu)(gu)定于(yu)散熱板(ban)(ban)45上(shang)(shang),而非固(gu)(gu)定于(yu)背(bei)板(ban)(ban)41的(de)(de)(de)(de)水(shui)平板(ban)(ban)體413上(shang)(shang),因此,背(bei)板(ban)(ban)41的(de)(de)(de)(de)水(shui)平板(ban)(ban)體413無需(xu)開(kai)設(she)固(gu)(gu)定驅動(dong)電(dian)路的(de)(de)(de)(de)螺孔,能夠節省背(bei)板(ban)(ban)41的(de)(de)(de)(de)制(zhi)造成(cheng)(cheng)本。在實際應用場景中,具有上(shang)(shang)述結構(gou)的(de)(de)(de)(de)背(bei)板(ban)(ban)41可(ke)以為一體成(cheng)(cheng)型結構(gou),并且本發明可(ke)以采用塑料(liao)代替金屬來(lai)制(zhi)造背(bei)板(ban)(ban)41,從而降低材料(liao)成(cheng)(cheng)本和開(kai)模(mo)(mo)成(cheng)(cheng)本。
導光(guang)(guang)(guang)板43和光(guang)(guang)(guang)源(yuan)42設置(zhi)于(yu)(yu)背板41的(de)豎(shu)直板體411和液(ye)(ye)晶面板50之(zhi)間。具(ju)體地(di),光(guang)(guang)(guang)源(yuan)42可(ke)以(yi)設置(zhi)于(yu)(yu)導光(guang)(guang)(guang)板43靠近液(ye)(ye)晶面板50的(de)一(yi)端,導光(guang)(guang)(guang)板43的(de)另一(yi)端插置(zhi)并固定于(yu)(yu)豎(shu)直板體411開設的(de)卡槽中,從而(er)防止漏光(guang)(guang)(guang)。當然,該(gai)卡槽中可(ke)以(yi)設置(zhi)有反(fan)(fan)射(she)(she)片(pian)44,通過反(fan)(fan)射(she)(she)片(pian)44將(jiang)該(gai)區域的(de)漏光(guang)(guang)(guang)反(fan)(fan)射(she)(she)進導光(guang)(guang)(guang)板43中,提高光(guang)(guang)(guang)利用率。
本實(shi)施例的(de)(de)導光(guang)板43為側入(ru)光(guang)式(shi)結構,其(qi)包(bao)括(kuo)入(ru)光(guang)面(mian)(mian)、與(yu)入(ru)光(guang)面(mian)(mian)垂直連接的(de)(de)出光(guang)面(mian)(mian)、以及與(yu)出光(guang)面(mian)(mian)相對設(she)(she)置(zhi)的(de)(de)底面(mian)(mian),光(guang)源42與(yu)所(suo)(suo)(suo)述入(ru)光(guang)面(mian)(mian)鄰近設(she)(she)置(zhi)。結合圖4所(suo)(suo)(suo)示,所(suo)(suo)(suo)述出光(guang)面(mian)(mian)上(shang)設(she)(she)置(zhi)有(you)(you)多個透鏡431,所(suo)(suo)(suo)述底面(mian)(mian)設(she)(she)置(zhi)有(you)(you)均勻分布的(de)(de)網(wang)點432。
在背(bei)光(guang)(guang)(guang)(guang)(guang)模組的(de)(de)(de)工(gong)作過程中,光(guang)(guang)(guang)(guang)(guang)源42發出的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)進(jin)(jin)入(ru)導(dao)光(guang)(guang)(guang)(guang)(guang)板43,并在照射(she)到各個網(wang)(wang)點(dian)432后發生漫反(fan)射(she),漫反(fan)射(she)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)在到達導(dao)光(guang)(guang)(guang)(guang)(guang)板43的(de)(de)(de)出光(guang)(guang)(guang)(guang)(guang)面(mian)時(shi),透鏡(jing)431對(dui)(dui)出射(she)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)進(jin)(jin)行折射(she)以(yi)提高(gao)背(bei)光(guang)(guang)(guang)(guang)(guang)亮(liang)(liang)度。進(jin)(jin)一步參閱(yue)圖(tu)3,光(guang)(guang)(guang)(guang)(guang)源42發出的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)經(jing)過導(dao)光(guang)(guang)(guang)(guang)(guang)板43后,再(zai)經(jing)過傾(qing)斜(xie)板體412上的(de)(de)(de)反(fan)射(she)片44才會進(jin)(jin)入(ru)液(ye)晶面(mian)板50,混光(guang)(guang)(guang)(guang)(guang)距離充足(zu),能夠避免出現(xian)網(wang)(wang)點(dian)mura現(xian)象。并且,底面(mian)的(de)(de)(de)網(wang)(wang)點(dian)432對(dui)(dui)進(jin)(jin)入(ru)導(dao)光(guang)(guang)(guang)(guang)(guang)板43內的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)進(jin)(jin)行漫反(fan)射(she),能夠實(shi)現(xian)擴(kuo)散片(diffuser)的(de)(de)(de)均(jun)光(guang)(guang)(guang)(guang)(guang)作用,導(dao)光(guang)(guang)(guang)(guang)(guang)板43的(de)(de)(de)透鏡(jing)431對(dui)(dui)出射(she)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)進(jin)(jin)行折射(she)以(yi)提高(gao)背(bei)光(guang)(guang)(guang)(guang)(guang)亮(liang)(liang)度,能夠實(shi)現(xian)棱鏡(jing)片(brightnessenhancementfilm,又稱增亮(liang)(liang)片)的(de)(de)(de)集光(guang)(guang)(guang)(guang)(guang)作用,從而無需(xu)設置擴(kuo)散片和棱鏡(jing)片,減少背(bei)光(guang)(guang)(guang)(guang)(guang)所需(xu)的(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)學膜片,有利于降低背(bei)光(guang)(guang)(guang)(guang)(guang)成本。
本(ben)發明(ming)可以通過優(you)化(hua)各個透鏡431的曲率,使(shi)得從導(dao)光(guang)(guang)(guang)(guang)板43出射的光(guang)(guang)(guang)(guang)的亮度(du)達到最優(you)。并且,為了提供給液晶(jing)面板50均勻的面光(guang)(guang)(guang)(guang)源(yuan),沿從左至右(you)的方向(xiang),即沿光(guang)(guang)(guang)(guang)源(yuan)42朝(chao)向(xiang)豎(shu)直板體411的方向(xiang),所述透鏡431的曲率依次增大。由于曲率越(yue)大,焦距越(yue)短(duan),匯聚作用(yong)越(yue)強(qiang),因此,遠(yuan)離光(guang)(guang)(guang)(guang)源(yuan)42的透鏡431的集光(guang)(guang)(guang)(guang)作用(yong)更強(qiang),從而使(shi)得其出射的光(guang)(guang)(guang)(guang)與鄰近光(guang)(guang)(guang)(guang)源(yuan)42的透鏡431出射的光(guang)(guang)(guang)(guang)的強(qiang)度(du)相近甚至相同。
應(ying)該理解(jie)到(dao),圖3所(suo)(suo)示背光(guang)(guang)(guang)模組(zu)30僅為(wei)闡述本發明之發明目的示意(yi)圖,本發明的背光(guang)(guang)(guang)模組(zu)還可(ke)以(yi)具有其他結構。例如,上述導(dao)光(guang)(guang)(guang)板43的制造材(cai)質(zhi)可(ke)以(yi)為(wei)pc(polycarbonate,聚碳酸(suan)酯或工程塑料),也(ye)可(ke)以(yi)為(wei)玻璃(li)(li)(li)。由(you)于光(guang)(guang)(guang)在玻璃(li)(li)(li)中(zhong)的擴散良(liang)于pc,因(yin)此要(yao)將點(dian)光(guang)(guang)(guang)源轉換為(wei)面(mian)光(guang)(guang)(guang)源并實現相同的均勻(yun)度,光(guang)(guang)(guang)在玻璃(li)(li)(li)材(cai)質(zhi)的導(dao)光(guang)(guang)(guang)板43中(zhong)所(suo)(suo)需折射的路徑(jing)小(xiao)于在pc材(cai)質(zhi)的導(dao)光(guang)(guang)(guang)板43中(zhong)所(suo)(suo)需折射的路徑(jing),因(yin)此采用玻璃(li)(li)(li)材(cai)質(zhi)能夠降低導(dao)光(guang)(guang)(guang)板43的厚度,從而降低整個(ge)背光(guang)(guang)(guang)模組(zu)30的厚度。
以上所(suo)述僅為本發明的(de)實(shi)施(shi)例,并非(fei)因此限制本發明的(de)專利(li)(li)范圍(wei),凡是利(li)(li)用本發明說明書及附(fu)圖內(nei)容所(suo)作的(de)等(deng)效結構或等(deng)效流程變換(huan),例如各實(shi)施(shi)例之間(jian)技術特征(zheng)的(de)相互結合,或直接或間(jian)接運用在其(qi)他相關的(de)技術領域,均同理包(bao)括在本發明的(de)專利(li)(li)保護范圍(wei)內(nei)。