TWI822816B - 天線陣列及具有所述天線陣列的液晶顯示器 - Google Patents
天線陣列及具有所述天線陣列的液晶顯示器 Download PDFInfo
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- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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Abstract
本發明提供一種天線陣列及具有所述天線陣列的液晶顯示器,所述天線陣列包括至少兩個天線單元,每一天線單元包括天線模組及控制電路,所述天線模組包括第一基底、設置於所述第一基底一側的天線、第二基底、設置於所述第二基底兩側的接地層與饋入部、以及液晶層;所述接地層開設耦合槽,所述天線、所述第一基底、液晶層、所述接地層以及所述第二基底依次堆疊設置,所述控制電路控制所述液晶層內液晶分子的偏轉狀態,以改變所述天線與所述接地層之間的介電常數,以改變所述天線單元的工作頻率及調整所述天線陣列的輻射場型。
Description
本發明涉及一種天線陣列,尤其涉及一種應用於液晶顯示器的天線陣列。
習知顯示器內設有貼片天線單元進行信號收發。所述貼片天線單元一般通過移相器來使其工作頻率進行偏移,惟,移相器的加入使得貼片天線單元的體積增加,且線路複雜。
鑒於以上問題,有必要提供一種體積小、線路簡單,同時,還可進行工作頻率偏移的天線陣列及具有所述天線陣列的液晶顯示器。
一種天線陣列,所述天線陣列包括至少兩個天線單元,每一個天線單元包括天線模組以及與所述天線模組相連的控制電路,所述天線模組包括第一基底、設置於所述第一基底一側的天線、第二基底、設置於所述第二基底兩側的接地層與饋入部、以及液晶層;所述接地層開設耦合槽,所述天線、所述第一基底、液晶層、所述接地層以及所述第二基底依次堆疊設置,所述控制電路控制所述液晶層內液晶分子的偏轉狀態,以改變所述天線與所述接地層之
間的介電常數,進而改變所述天線單元的工作頻率,所述天線陣列的輻射場型通過控制每一個天線單元的工作頻率進行調整。
一種液晶顯示器,所述液晶顯示器包括基板、設置於所述基板上的顯示區域及上述的天線陣列。
本發明所述天線陣列通過控制液晶分子的偏轉狀態來改變所述天線與所述接地層之間的介電常數,進而使所述天線單元的工作頻率發生偏移,無需額外設置移相器,因此,所述天線陣列的線路簡單、且體積較小。
200:液晶顯示器
201:基板
202:顯示區域
100:天線陣列
10a:天線單元
10:天線模組
11:第一基底
12:天線
13:接地層
131:耦合槽
14:第二基底
15:饋入部
16:液晶層
161:液晶分子
30:控制電路
C1:第一電容
C2:第二電容
33:微帶線
31:開關
D:漏極
G:柵極
S:源極
R:電阻
圖1為本發明一較佳實施例的液晶顯示器的結構示意圖。
圖2為本發明一較佳實施例的的天線陣列的示意圖。
圖3為本發明一較佳實施例的天線單元的分解示意圖。
圖4為本發明一較佳實施例的天線單元的剖面圖。
請參閱圖1,本發明較佳實施例提供一種天線陣列100,所述天線陣列100設置於液晶顯示器200中,用以發射、接收無線信號。
所述液晶顯示器200包括基板201及設置於所述基板201的顯示區域202。所述天線陣列100設置於所述基板201上,位於所述液晶顯示器200的非顯示區域,例如,所述顯示區域202的一端,當然,所述天線陣列100還可設置於所述顯示區域202的另一端或者兩側。
請參閱圖2及圖3,所述天線陣列100包括至少兩個天線單元10a。每一個天線單元10a包括天線模組10以及與所述天線模組10相連的控制電路30。
所述天線模組10包括第一基底11、天線12、接地層13、第二基底14、饋入部15、以及液晶層16。
所述天線12、所述第一基底11、所述液晶層16、所述接地層13以及所述第二基底14依次堆疊設置,所述控制電路30控制所述液晶層16內液晶分子161的偏轉狀態,以改變所述接地層和天線之間的介電常數,進而改變所述天線單元10a的工作頻率,所述控制電路30控制每一個天線單元10a以對所述天線陣列100的輻射場型進行調整。
在本較佳實施例中,所述第一基底11大致呈矩形,用於設置所述天線12。在本較佳實施例中,所述第一基底11由聚合物、玻璃、陶瓷中任意一種製成。
所述天線12為貼片天線,大致為矩形片體,可以理解,所述天線12也可以為其他任意形狀。所述天線12設置於所述第一基底11的一側。
所述接地層13用於向所述天線12提供接地。所述接地層13還開設耦合槽131。在本較佳實施例中,所述耦合槽131大致呈矩形,可以理解,所述耦合槽131也可以為其他任意形狀。
在本較佳實施例中,所述第二基底14大致呈矩形,用於設置所述接地層13,所述接地層13設置於所述第二基底14朝向天線12的一側。在本較佳實施例中,所述第二基底14由聚合物、玻璃、陶瓷中任意一種製成。
所述饋入部15用於向所述天線單元10a饋入信號。所述饋入部15可由微帶線、共面微帶線、開槽傳輸線、槽孔耦合微帶線中任意一種製成。在本較佳實施例中,所述饋入部15呈長條狀,設置於所述第二基底14與所述接地層13相對的一側,所述饋入部15大致位於所述第二基底14的中軸線,且與所述耦合槽131對應。
所述液晶層16可設置於所述液晶顯示器200的基板201內,其可為所述液晶顯示器200內現有的液晶基底,所述天線陣列100嵌入在所述液晶顯示器200,所述液晶層16內的液晶分子161的偏轉狀態可以改變所述天線12與所述接地層13之間的介電常數,從而使所述天線單元10a的工作頻率發生偏移。
在本較佳實施例中,所述控制電路30包括第一電容C1及與所述第一電容C1相連的開關31,所述第一電容C1的第一端連接至所述天線12,第二端連接至所述接地層13,並接地,所述開關31控制所述第一端與所述第二端之間的電壓,所述第一電容C1用於驅動所述液晶分子161偏轉。當所述開關31導通時,所述液晶分子161偏轉,當所述開關31截止時,所述液晶分子161停止偏轉。
在本較佳實施例中,所述開關31為場效應管,其漏極D與所述第一端相連,柵極G接地,源極S連接驅動電壓Vcc,同時,所述源極S經電阻R連接至柵極G。
可以理解,所述控制電路30還包括微帶線33以及第二電容C2,所述微帶線33設置於所述天線12與所述第一端之間,所述第二電容C2與所述第一電容C1並聯,所述第二電容C2與所述微帶線33配合調整所述天線12的匹配阻抗。在本較佳實施例中,所述微帶線33為四分之一波長微帶線。
請參閱圖4,在本較佳實施例中,所述天線陣列100包括多個天線單元10a,所述天線陣列100為N×M天線陣列,其中,N、M均為自然數,在本較佳實施例中,N、M分別等於3、4。所述天線陣列100的排列方式可根據所述液晶顯示器200內的空間進行調整,也可呈其他形狀,例如,圓形排布等,在本較佳實施例中,所述天線陣列100通過N×M陣列方式排布,可便於控制所述天線單元10a,且所述天線單元10a整體佔用的空間較小,易於安裝。
當所述天線陣列100發射、接收無線信號時,所述天線陣列100的輻射場型可通過控制每一個天線單元10a的工作頻率進行調整,所述天線陣列
100的輻射場型由每一個天線單元10a的工作頻率總和來確定,具體地,可通過所述控制電路30控制驅動電壓Vcc來控制所述開關31的狀態,當所述開關31導通時,所述液晶分子161發生偏轉,當所述開關31截止時,所述液晶分子161停止偏轉,所述液晶分子161的偏轉狀態可以改變所述天線12與所述接地層13之間的介電常數,進而使所述天線單元10a的工作頻率發生偏移。同時,通過控制所述天線單元10a的處於截止狀態的開關31(例如,圖4中標示為off的開關)數量,可降低所述天線陣列100的輻射效率,進而調整所述天線陣列100的波束方向。具體地,處於截止狀態的開關31數量越多時,所述天線陣列100的輻射效率越低。
本發明所述天線陣列100無需額外設置移相器,便可使所述天線單元10a的工作頻率發生偏移,因此,所述天線陣列100的線路簡單、且體積較小。
綜上所述,本創作符合發明專利要件,爰依法提出專利申請。惟,以上所述者僅為本創作之較佳實施例,本創作之範圍並不以上述實施例為限,舉凡熟習本案技藝之人士爰依本創作之精神所作之等效修飾或變化,皆應涵蓋於以下申請專利範圍內。
200:液晶顯示器
201:基板
202:顯示區域
100:天線陣列
Claims (9)
- 一種天線陣列,其改良在於,所述天線陣列包括至少兩個天線單元,每一個天線單元包括天線模組以及與所述天線模組相連的控制電路,所述天線模組包括第一基底、設置於所述第一基底一側的天線、第二基底、設置於所述第二基底兩側的接地層與饋入部、以及液晶層;所述接地層開設耦合槽,所述天線、所述第一基底、液晶層、所述接地層以及所述第二基底依次堆疊設置,所述控制電路控制所述液晶層內液晶分子的偏轉狀態,以改變所述天線與所述接地層之間的介電常數,進而改變所述天線單元的工作頻率,所述天線陣列的輻射場型通過控制每一個天線單元的工作頻率進行調整;其中所述控制電路包括第一電容及與所述第一電容相連的開關,所述第一電容的第一端連接至所述天線,第二端連接至所述接地層,所述開關控制所述第一端與所述第二端之間的電壓,所述第一電容用於驅動所述液晶分子偏轉。
- 如請求項1所述的天線陣列,其中所述開關為場效應管,所述開關的漏極與所述第一端相連,柵極接地,源極連接一驅動電壓並經電阻連接至柵極。
- 如請求項1所述的天線陣列,其中所述控制電路還包括微帶線以及第二電容,所述微帶線設置於所述天線與所述第一端之間,所述第二電容與所述第一電容並聯,所述第二電容與所述微帶線配合調整天線的匹配阻抗。
- 如請求項3所述的天線陣列,其中所述微帶線為四分之一波長微帶線。
- 如請求項1所述的天線陣列,其中所述天線陣列包括多個天線單元,所述天線單元呈N×M陣列排布,其中,N、M均為自然數。
- 如請求項1所述的天線陣列,其中所述天線為貼片天線,大致為矩形片體。
- 如請求項1所述的天線陣列,其中所述第一基底以及所述第二基底均由聚合物、玻璃、陶瓷中任意一種製成。
- 如請求項1所述的天線陣列,其中所述饋入部由微帶線、共面微帶線、開槽傳輸線、槽孔耦合微帶線中任意一種製成。
- 一種液晶顯示器,所述液晶顯示器包括基板、設置於所述基板上的顯示區域及天線陣列,其改良在於:所述天線陣列為請求項1-8中任意一項所述的天線陣列。
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