200933595 九、發明說明： 【發明所屬之技術領域】 本發明係有關-種具有白點雛之裝置及其方法，制是有關一 種兼具廣色域與色度調控之裝置及其方法。 【先前技術】 為了使得液晶顯示器所呈現的畫質更細腻，且提升色彩飽和度的 表現，除了在液晶顯示器中的背光模組採用冷陰極螢光燈管(Ccfl)、 發光-極體(LED)…等各種多原色之光源以做為背光源之外，亦同時搭 ❹S&特賴計的彩色滤光片與液晶驅動模組，以達到擴大液晶顯示器之 顯示色域的目的，然而，就上述所提供的冷陰極螢光燈管與發光二極 體而言，應用在被光源中，因為發光二極體係具有演色性較高、低污 染性、較小尺寸、低電壓驅動、較佳的光強度分布與較快的反應速度… 等等的特點，使得在選擇背光源時，發光二極體儼然成為取代冷陰極 螢光燈管的最佳選擇。 針對兩組具有不同頻譜的發光二極體背光源而言，其所共同構成 的色域範圍及其調控的方式係請參考第一圖所示，本圖係為習知發光 二極體背光模組中的兩組不同頻譜的三原色背光源所產生的色度座標 ©分布圖，其中，第一組的三原色背光源係形成第一三角形，在圖中係 以虛線三角形表示之，此第一三角形的三個頂點係由第一組的三原色 背光源中的第一紅色色度座標闩彳、第一綠色色度座標G1與第一藍色 色度座標B1所連接而成，且，在此第一三角形内係依據第一紅色色度 座標R1、第一綠色色度座標G1與第一藍色色度座標B1以計算出第 —白點色溫VV1 ’同理，第二組的三原色背光源係形成第二三角形， 在圖中係以實線三角形表示之，此第二三角形的三個頂點係由第二組 的二原色背光源中的第二紅色色度座標R2、第二綠色色度座標G2與 第二藍色色度座標B2所連接而成，且，在此第二三角形内係依據第二 5 200933595 ❹ Ο 紅色色度座標R2、第二綠色色度座標G2與第二藍色色度座標 計算出第二白點色溫W2，而為了使上述第—組的三原色背光= 二組的三原色背賴在進行4加後可使得第—白點色溫W1與第= 點色溫W2重合，勢必造成上述第__組的三原色背統與第二： 原色背光源的亮度改變’也因此影響到祕顯示出的色域範圍；然而二 為了使人眼在觀看影像時可獲得更廣的色域，針對上述方法所造成的 缺失’係改以利用上述第—組的三原色背光源與第二組的三原色光 源係分別以亮暗驅動财式在不_酿下職與關叫加兩個 同頻譜的背光源’其顯示出的色域範圍便含括了由上述的第—紅 度座標R1、第-綠色色度座標G1、第一藍色色度座標則、第二 色度座標R2、第二綠色色度座標G2、第二藍色色度座標B2共同連 接所構成域’也耻’擴大人眼可賴的色域範圍，惟，^於兩 組不同頻譜的發光二極體背統而言，#此背光模組僅以單一個色命 感應器進行色彩的調控時’若欲將顯示面板上#央點的色度調整至期 望的目標值’在實際_作與運算下並不容錢成，因此，目前常見 的方法係顧色佩應器與背絲α—對—_ 同頻譜的背光源進行調整，換言之，每一背光源係透二;= 感應器進行調整以計算出此-背絲對應之色度值，但是此種方 法因為需要較多的色彩感應器，不但使得整體裝置的成本大幅增加， 也使得整體裝置變得龐大且笨重，有鐘於此，則又發展出利用單一色 彩感應H韻乡個背統_控雜，惟，在倾架構下此—色彩感 應器係必須透過不_硬體訊號以使色概纏可針對不同组的背光 源之亮暗程度而計算出色度刺激值，然而，因為這種架構所使用的色 彩感應器必齡夠讀取繁多的硬體訊號，因而增加了色彩感應器的邏 輯設計上的複雜度，就兩組不肉頻譜的三原色背光源而言，每一組背 光源中的每一原色皆必須對應一專屬的硬體訊號，因此，在此狀態下 色彩感應器則必須能夠判讀並運算六種不同的參數，此外，還必須再 200933595 加上兩組背光源的輝度控制訊號，由此可知，此種架構雖然不會造成 整體裝置的贿過度增加，卻大幅地增加了色佩應器中控制迴路的 設計難度。 基於上述的缺失，本發明係提出一種兼具廣色域與色度調控之裝 置及其方法’其係_相同亮度㈣光源以進行自_調控以達到 廣色域與色度調整的效果。 【發明内容】200933595 IX. Description of the Invention: [Technical Field] The present invention relates to a device having a white spot and a method thereof, and relates to a device and a method for controlling a wide color gamut and a chromaticity. [Prior Art] In order to make the image quality of the liquid crystal display more delicate and enhance the performance of color saturation, in addition to the backlight module in the liquid crystal display, a cold cathode fluorescent lamp (Ccfl), a light-emitting body ( LED), etc., as a backlight source, and also use S&Tray's color filter and liquid crystal driver module to expand the display color gamut of the liquid crystal display. However, The cold cathode fluorescent lamp and the light emitting diode provided by the above are applied to the light source because the light emitting diode system has high color rendering property, low pollution, small size, low voltage driving, and preferably The light intensity distribution and faster reaction speed... and so on, make the LEDs the best choice to replace the cold cathode fluorescent tube when selecting the backlight. For the two sets of LED backlights with different spectrums, the color gamut range and its regulation mode are shown in the first figure. This figure is a conventional LED backlight module. a chromaticity coordinate © distribution map generated by two sets of three primary color backlights of different spectra in the group, wherein the first set of three primary color backlights form a first triangle, which is represented by a dotted triangle in the figure, the first triangle The three vertices are formed by the first red chromaticity coordinate latch, the first green chromaticity coordinate G1 and the first blue chromaticity coordinate B1 of the first set of three primary color backlights, and are firstly The triangle is based on the first red chromaticity coordinate R1, the first green chromaticity coordinate G1 and the first blue chromaticity coordinate B1 to calculate the first white point color temperature VV1 ', and the second set of three primary color backlights form the first The two triangles are represented by solid triangles in the figure, and the three vertices of the second triangle are the second red chromaticity coordinates R2 and the second green chromaticity coordinates G2 of the second set of two primary color backlights. Second blue color seat The standard B2 is connected, and in the second triangle, the second white point color temperature is calculated according to the second 5 200933595 ❹ Ο red chromaticity coordinate R2, the second green chromaticity coordinate G2 and the second blue chromaticity coordinate W2, and in order to make the three primary color backlights of the above-mentioned first group = the three primary colors of the two groups are backed up, the first white color temperature W1 and the first color temperature W2 coincide with each other, which is bound to cause the three primary colors of the first __ group System and second: the brightness change of the primary color backlight' also affects the color gamut range displayed by the secret; however, in order to enable the human eye to obtain a wider color gamut when viewing the image, the lack of the above method is caused' The system uses the above-mentioned first group of three primary color backlights and the second group of three primary color light sources to respectively display the colors of the backlights of the same spectrum with the light and dark driving modes. The domain range includes the above-mentioned first-redness coordinate R1, the first-green chromaticity coordinate G1, the first blue chromaticity coordinate, the second chromaticity coordinate R2, the second green chromaticity coordinate G2, and the second blue Color chromaticity coordinates B2 are connected to form a domain' Shame 'expands the range of color gamut that the human eye can rely on, but, in the case of two sets of different spectrums of light-emitting diodes, # this backlight module only uses a single color sensor for color control. To adjust the chromaticity of the #Central Point on the display panel to the desired target value' is not allowed in the actual _ operation and operation. Therefore, the current common methods are the color-adhesive device and the back-wire α-pair-_ Adjusting with the backlight of the spectrum, in other words, each backlight is transparent; = The sensor is adjusted to calculate the chromaticity value corresponding to the back wire, but this method requires more color sensors, not only The cost of the overall device has been greatly increased, and the overall device has become bulky and cumbersome. In this case, the use of a single color sensor has been developed to control the rhyme of the hometown. The sensor system must pass the non-hardware signal so that the color entanglement can calculate the brilliance value for the brightness of different sets of backlights. However, because the color sensor used in this architecture is sufficient for reading a lot of hardware signals, because Increasing the complexity of the logic design of the color sensor, for each of the two primary color backlights of the non-plasma spectrum, each primary color in each set of backlights must correspond to a dedicated hardware signal, therefore, here In the state, the color sensor must be able to interpret and calculate six different parameters. In addition, the backlight control signals of the two sets of backlights must be added to 200933595. It can be seen that this architecture will not cause excessive bribery of the whole device. The increase has greatly increased the design difficulty of the control loop in the color applicator. Based on the above-mentioned deficiencies, the present invention proposes a device having both a wide color gamut and a chromaticity control and a method thereof. The same brightness (four) light source is used for self-regulation to achieve a wide color gamut and chromaticity adjustment effect. [Summary of the Invention]
本發明之主要目的，係提出一種兼具廣色域與色度調控之裝置及 其方法’其係彻具有相同亮度⑽發光二極體背光源在蚊亮度的 狀況下，因為兩背絲係屬於不同之色溫範圍，因此，藉由調整兩背 光源在同一訊框下以不同的責任週期(duty rati〇),以使得累加後之兩 背光源所獲得之色度值係等於目標之白點色溫，且，定義此二背光源 之，度係分別為Y1與丫2、由此二背光源所累加而得之亮度為γ，則， Υ1-Υ2係成立，且，當a+b=i成立時γ = a*丫1+匕*丫2亦成立，其中 的a與b係分別表示兩背絲在同—訊框τ之責任週期。 Y1 且 本發明之另一目的’係提出一種兼具廣色域與色度調控之裝置及 其方法’其係糊具有相職度的兩發光二極體背絲在敗亮度且 =有相同責任週期的情況下，針對每—背光源的功率輸出增益進行調 控以調整背域的輸di ’且餅的光源在_f、加後所獲得之色度 =等於目標之白點色溫，且’定義此二背光源之亮度係分別為 ^ 、由此二背光源所累加而得之亮度為Y，則，Υ1=Υ2係成立，在， ^ ΓΓ成立時Y=a*Y1+b*Y2亦成立，其中的a與b係分別表示兩 穿先源之功率輸出增益。 本發明之再-目的，係提出—種兼具廣色域與色度調控之裝置及 卜法’其係彻具有相同亮度㈣發光二極體背絲在蚊亮度的 =下’藉由其快速反應的特性以將此些縣關啟時的訊框切割成 固子訊框’使得每—背光源開啟的比例係可以其分配到的子訊框 200933595 數目做為依據’以讓兩背光源在經過累加後所獲得之色度值可等於目 標之白點色溫，且，定義此二背光源之亮度係分別為Y1與丫2、由此 一背光源所累加而得之亮度為Y，則，丫1=丫2係成立，且，當a+b=1 成立時Y = a*Y1+b*Y2亦成立，其中的3與1)係分別表示相對應於兩 背光源的子訊框數目。 本發明之又一目的，係提出一種兼具廣色域與色度調控之裝置及 其方法，其係利用兩發光二極體背光源在相同且固定亮度的條件下， 透過顯示器顯不操控(on screen display，〇SD)方法，以針對每一背光 源的責任週期或是功率輸出增益或是開啟之子訊框數目進行調控，使 〇得兩背光源在經過累加後所獲得之色度值可等於目標之白點色溫。 為達上述之目的’本發明提供一種兼具廣色域與色度調控之裝 置，其係包括：至少一用以產生並傳送控制訊號的處理單元，且此些 控制訊號接續進人到至少-背光驅料元巾，並餅赠光驅動單元 依據此些控制訊號以啟動相對應之背光源的開啟或關閉，且，在背光 源開啟的同時，更透過至少—色械應單元以在兩背絲之亮度相同 且固定的f提下，先計算出二背紐之實際色溫，並依據設定的目標 色恤與计异出的實際色溫，以產生相對應於二背光源之回饋訊號並回 傳至處理單元㈣進行背絲_整，使得祕㈣光騎共同構成 的色度係可符合設定的目標色度。 另外，本發明提供一種兼具廣色域與色度調控之方法，其係包括 下歹J步驟.首先’啟動二背光源；接續，調整二背光源亮度以使二背 光源之亮肋等，並且固定此—亮度，叫算出每-絲源所具有之 相對應的-實際色溫；接續，比較—目標色溫與每—實際色溫以計算 出相對應於每-實際色溫之—比规數，餅在累加二背光源後所得 ^白點色度值係等於目標色溫，且其中，計算出的比例係數係以每一 奇光源開啟時之責任週期、或是功率輸出增益、或是實際開啟之訊框 數目為侬壚。 200933595 最後’本發明亦提供一種兼具廣色域與色度調控之液晶顯示裝 置，其係包括一背光模組、一顯示驅動單元與一液晶單元，其中的背 光模組係包括有：至少一處理單元、至少一背光驅動單元與至少一色 彩感應單元，處理單元係用以產生控制訊號，而背光驅動單元則是接 收此些控制訊號以驅動背光源之開啟與關閉，同時，在背光源之亮度 相同且固定的前提下，利用色彩感應單元先計算出每一背光源之實際 色溫，並依據目標色溫與實際色溫以產生相對應於背光源之回饋訊號 並回傳至處理單元。因此，當背光模組產生光源後，顯示驅動單元係 接收來自背光模組的光源並產生相對應之驅動訊號，而液晶單元係利 ©用此些驅動訊號以決定液晶扭轉的角度使得光源在經過液晶單元後可 成像在顯示螢幕上。 因此，本發明所揭露的一種兼具廣色域與色度調控之裝置及其方 法，其係以具有相同亮度的二背光源在固定亮度的情況下，藉由調整 兩背光源本身的責任週期、或是功率輸出增益、或是背光源開啟的訊 框數目等等方式，以達到較廣色域且又可同時控制色度的目的。 底下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本 發明之目的、技術内容、特點及其所達成之功效。 0 【實施方式】 由於發光二極體做為背光源係可提供演色性較高、不含汞的低污 染性、較小尺寸、低電壓驅動、較佳的光強度分布與較快的反應速度… 等等的特點，惟，為了可有效地控制發光二極體背光源中各種原色的 表現，以使其可發揮到較佳的發光效果，用以控制的電路迴路設計通 常相當地複雜，就以兩組發光二極體背光源為例，在進行色溫調控時， 通常會影響到其本身的亮度而使得調整至目標色溫後卻無法達到理想 的亮度表現。因此，本發明係提供一種兼具廣色域與色度調控之裝置 及其方法以改善此困難。以下，係提出本發明的各種可能之實施態樣， 同時佐以圖示來詳加說明。 200933595 ❹ 〇 首先，請同時參考第二圖與第三圖所示，第二圖係為本發明之其 中一種兼具廣色域與色度調控之裝置的電路架構示意圖，而第三圖係 為本發明之兼具廣色域與色度調控之方法的流程囷。在第二圖中的兼 具廣色域與色度調控之裝置係包含有：一微處理單元1〇、一發光二極 體驅動單元14、兩組發光二極體背光源161、162與一色彩感應單元 18，且兩組發光二極體背光源161、162之間之頻譜差異必須大於工 業規格中所訂定之最小差異值，一般而言，兩組發光二極體背光源 161、162之波長差異必須不小於3奈米，而在此實施態樣中，此兩組 發光二極體背光源161、162係由第一發光二極體背光源161與第二 發光一極體背光源162所構成，其中，第一發光二極體背光源161係 由第一紅色背光源1611、第一綠色背光源1612與第一藍色背光源 1613所構成，第一發光二極體背光源162係由第二紅光背光源1621、 第二綠色背光源1622與第二藍色背光源1623所構成，此外，為了訊 號的處理’在微處理單元1G與發光二極體驅動單元14之間係可設置 至少-數位類比轉換料121、122;另外，在第三圖中則是提供本發 明之調控方法，其係包括以下师：首先，在步驟S1巾，啟動二背光 源⑻、162 ;接續’在步驟S2中，調整二背光源161、162亮度以 使一背光源161、162之亮唐相耸日la今 ^原61、162所具有之相對應之實際色溫；最後，在步驟韵中， :二i標一實際色溫以計算出相對應於每一實際色溫之一 比例係數，使侍在累加二背光源161、16 於目標色溫，且其中，外置“…祕日邮度值係等 開啟時之眚㈣/算出的比例係數係以母一背光源161、162 依據。’ °、或是功率輸出增益、或是實際開啟之訊框數目為 =，請同時依據第二圖、第三圖與第四圖係可得知 四，、為本發明中具有兩組不同沾 種色度座標分布圖，#—目h、w τ — : W光撕產生的其中一 目“色^ τ蚊後’依據步驟S1，微處理單 200933595 元10係產生控制訊號來啟動發光二極體驅動單元14以驅動連接在發 光二極體驅動單元14上之第一發光二極體背光源161與第二發光二 極體背光源162，且第一發光二極體背光源161中的第一紅色背光源 1611、第一綠色背光源1612與第一藍色背光源1613係在色度座標上 分別相對應於第一紅色色度座標x1、第一綠色色度座標y1與第一藍 色色度座標z1，且第一紅色背光源1611、第一綠色背光源1612與第 一藍色背光源1613對於人眼的刺激值係可分別以X1、Y1與Z1表示， 其中的第一綠色背光源1612之刺激值Υ1亦可用以表示為第一發光二 極體背光源161之亮度，根據上述的參數，對於第一發光二極體背光 ❹源161而言，第一發光二極體背光源161中第一紅色背光源1611的 刺激值Χ1、第一綠色背光源1612的刺激值Υ1、第一藍色背光源1613 的刺激值Ζ1與第一紅色色度座標x1、第一綠色色度座標yi、第一藍 色色度座標z1係符合以下式(1)-式(3)所示： x1 =Χ1/(Χ1+Υ1+Ζ1)..........(1) y1 = Y1/(X1+Y1+Z1)..........(2) z1 = 1 - X1 - y1........· · · · (3) 相同地，第二發光二極體背光源162中的第二紅色背光源1621、 第二綠色背光源1622與第二藍色背光源1623係在色度座標上分別相 對應於第二紅色色度座標x2、第二綠色色度座標y2與第二藍色色度 座標z2 ’且第二紅色背光源1621、第二綠色背光源1622與第二藍色 背光源1623對於人眼的刺激值係可分別以X2、Y2與Z2表示，其令 的第二綠色背光源1623之刺激值Y2亦可用以表示為第二發光二極體 背光源162之亮度，根據上述的參數’對於第二發光二極體背光源162 而言，第二發光二極體背光源162中第二紅色背光源1621的刺激值 X2、第二綠色背光源1622的刺激值Y2、第二藍色背光源1623的刺 激值Z2與第二紅色色度座標χ2、第二綠色色度座標y2、第二藍色色 度座標z2係符合以下式(4)-式(6)所示： 200933595 x2 = Χ2/(Χ2+Υ2+Ζ2)-. y2 = Υ2/(Χ2+Υ2+22) · . . 3 •.......(5) ζ2 = 1 - χ2 - y2 · · ·. 土··.......⑹ 接依據，驟S2中所示，先將此第一發光二極體背光源161 ，亮度yi與第-發光―極體背光源162的亮度γ2調整至相同的亮度 楚並2定此^度丫’因此，第—發光二極體背光源161之亮度Y1、 、一極4光源162的亮度丫2與_的亮度Y係符合以下的 式(7)所示： Y1 = Υ2 = Υ · · . ·. 〇 .......(7) f且依據帛發^^極體背絲161與第二發光二極體背光源 件下’糊色彩感應單元18以計算出第一發光 二極體背光源161與第二發光二極體背光源162在此狀態下所呈現的 實際色溫，詳言之，對於第一發光二極體背光源161而言，第-發光 二極體背光源161的亮度為丫彳時，其係在色度座標中具有一第一白 點色溫值τι，相同地，對於第二發光二極體162背光源而言，第二發 光二極體背光源脱的亮度為Υ2時，其係在色度座標中具有一第二 白點色溫值Τ2，由於為了使人眼所接收到的混合後之第一發光二極體 Q背光源161與第二發光二極體背光源162的亮度不變，且同時又要使 得混合後的第一白點色溫值Τ1與第二白點色溫值Τ2可達到目標色度 Τ ’並且符合如以下式(8)所示之關係： T = a*T1 + b*T2.............(8) 且，其中的a、b之總和係為1 » 接續，如步驟S3中所示，係可利用疊加第一發光二極體背光源 161與第二發光二極體背光源162之色度’以使人眼觀察到的刺激^ 可累加到目標色度Τ’且，其所使用的手段可藉由調整第一發光二極 體背光源161與第二發光·一極體背光源162之開啟的責任週期、或是 功率輸出增益、或是開啟的訊框數目…等等。 12 200933595 首先，先以調整第一發光二極體背光源161與第二發光二極體背 光源162之開啟的責任週期為例加以說明，由於第一發光二極體背光 源161與第二發光二極體背光源162係具有相同的亮度丫，但’就色 度座標上的色溫值而言，第一白點色溫值T1係大於目標色度T且第 二白點色溫值T2係小於目標色度τ，因此，在同一個訊框下，利用第 一發光二極體背光源161與第二發光二極體背光源162以不同的責任 週期同時開啟，以達到第一發光二極體背光源161與第二發光二極體 背光源162在色度疊加之後所獲得的色溫值係等於目標色度T，而其 中在式(8)中的a值是為第一發光二極體背光源161所對應的責任週 ®期、b值則是為第二發光二極體背光源162所對應的責任週期。 另外，再以調整第一發光二極體背光源161與第二發光二極體背 光源162之功率輸出增益為例加以說明，由於第一發光二極髏背光源 161與第二發光二極體背光源162係具有相同的亮度γ，且第一發光 二極體背光源161與第二發光二極體背光源162係具有相同的責任週 期，因此’透過第一發光二極體背光源161與第二發光二極體背光源 162以不同的功率輸出，而使得第一發光二極體背光源161與第二發 光二極體背光源162在色度疊加之後所獲得的色溫值係等於目標色度 T，而在此實施態樣中，相對應於式⑼中的3值是為第一發光二極體 背光源161所對應的功率輸出增益、b值則是為第二發光二極體背光 源162所對應的功率輸出增益。 再者，再以調整第一發光二極體背光源161與第二發光二極體背 光源162之開啟的訊框數目為例加以說明，由於第一發光二極體背光 源161與第一發光二極體背光源162係具有相同的亮度γ，且又因為 發光一極體係具有快速反應的特性，因此，將第一發光二極體背光源 161與第二發光二極體背光源162開啟的時間切割成較細微的子訊 框，並利用部分子訊框以用來開啟第一發光二極體背光源161，另一 部分子訊框係用來開啟第二發光二極體背光源162，以使得在養加所 13 200933595 ^子訊框後所獲得的第—發光二極體背絲161與第二發光二極艘背 光源162的色溫值係等於目標色度了，且，在此實施態樣中相對應 於式⑻中的a值是為第一發光二極趙背光源161在開啟時所對應的子 訊框數目、b值則是為第二發光二極體背絲162在開啟時所對應的 綜合上述可知，本發明所揭露之一種兼具廣色域與色度調控之裝 置及其方法’其係利用兩組相同亮度但不同色溫的發光二極體背光 色度疊加的方式達到最終的目標色度，在實際應用於液晶顯示 器上，$但無須增加色彩感應單元在控制迴路上設計的負擔更可 以透過顯示H顯示操控的方式來使得使用者可隨意地更改所欲達到的 目標色度，且又不影響整體畫面的亮度，因此，本發a腾可達到簡化 硬，與軟_設計，提供更為人性化的操作介面，_，亦維持影像 以上所述係藉由實施例說明本發明之特點 術者能暸解本制之内容並據以實施，_蚊本發明之專 ，，凡其他未脫離本發日月所揭#之精神所完成之等效修飾或修改，仍 應包含在以下所述之申請專利範圍中。 ❹ 【圖式簡單說明】 二為模組，的兩組不同頻譜的三原色背光源 ==為本發明之其t _種兼具廣色域與色度調控之裝砂電路架構 第二圖為本發明之兼具廣色域與色度調控之方法的流程圖。 第四圖為本㈣中具有兩組不同頻譜的三騎背絲所產 種色度座標分布圖。 夂、〒一 121、122數位類比轉換單元 【主要元件符號說明】 10微處理單元 200933595 14發光二極體驅動單元 162第二發光二極體背光源 1612第一綠色背光源 1621第二紅色背光源 1623第二藍色背光源 161第一發光二極鱧背光源 1611第一紅色背光源 1613第一藍色背光源 1622第二綠色背光源 18色彩感應單元 ❹ 15The main object of the present invention is to provide a device and method for wide color gamut and chromaticity control, which have the same brightness (10) light-emitting diode backlight in the condition of mosquito brightness, because the two back silk systems belong to Different color temperature ranges, therefore, by adjusting the two backlights to have different duty cycles under the same frame, so that the chromaticity values obtained by the accumulated two backlights are equal to the target white point color temperature. And, defining the two backlights, the degrees are Y1 and 丫2, respectively, and the luminance obtained by the two backlights is γ, then Υ1-Υ2 is established, and when a+b=i is established When γ = a*丫1+匕*丫2 is also established, where a and b respectively indicate the duty cycle of the two back wires in the same frame τ. Y1 and another object of the present invention is to propose a device with a wide color gamut and a chromaticity control method and a method thereof, wherein the two light-emitting diode back wires have a corresponding degree of responsibility and have the same responsibility In the case of a cycle, the power output gain of each backlight is adjusted to adjust the input of the back domain and the light source of the pie is at _f, the chromaticity obtained after the addition = equal to the white color temperature of the target, and 'definition The brightness of the two backlights is ^, and the brightness obtained by the two backlights is Y, then Υ1=Υ2 is established, and Y=a*Y1+b*Y2 is also established when ^ ΓΓ is established. , where a and b respectively represent the power output gain of the two-pass source. The re-purpose of the present invention is to propose a device having both a wide color gamut and a chromaticity control and a method of "having the same brightness" (four) light-emitting diode back wire under the mosquito brightness = by 'fast The characteristics of the reaction are to cut the frame of the county into a solid frame, so that the ratio of each backlight can be based on the number of subframes 200933595 assigned to it so that the two backlights are accumulated. The chromaticity value obtained afterwards may be equal to the white point color temperature of the target, and the brightness of the two backlights is defined as Y1 and 丫2, respectively, and the brightness obtained by a backlight is Y, then 丫1 = 丫 2 is established, and Y = a * Y1 + b * Y2 is also true when a + b = 1 is established, and 3 and 1) respectively indicate the number of sub-frames corresponding to the two backlights. Another object of the present invention is to provide a device and a method for controlling a wide color gamut and a chromaticity, which are controlled by a display using two LED backlights under the same and fixed brightness conditions. The on screen display (〇SD) method is used to adjust the duty cycle of each backlight or the power output gain or the number of sub-frames that are turned on, so that the chromatic values obtained by the two backlights after being accumulated can be obtained. Equal to the white color temperature of the target. For the above purposes, the present invention provides a device for both wide color gamut and chromaticity control, comprising: at least one processing unit for generating and transmitting a control signal, and the control signals are successively brought into at least - The backlight driving the towel, and the cake-sending light driving unit activates or turns off the corresponding backlight according to the control signals, and at the same time, the backlight is turned on, and at least the color-receiving unit is used in the two backs. The brightness of the silk is the same and the fixed f is raised. Firstly, the actual color temperature of the two backs is calculated, and according to the set target color and the actual color temperature of the difference, the feedback signal corresponding to the two backlights is generated and returned. To the processing unit (4) to carry out the back-spinning, so that the chromaticity of the secret (four) light riding can be consistent with the set target chromaticity. In addition, the present invention provides a method for combining wide color gamut and chromaticity control, which includes the step of squeezing J. First, 'starting the two backlights; connecting, adjusting the brightness of the two backlights to make the ribs of the two backlights, etc. And fixing this - brightness, called to calculate the corresponding - actual color temperature of each - source; continuation, comparison - target color temperature and each - actual color temperature to calculate the corresponding - the actual color temperature - the ratio, pie After accumulating the two backlights, the obtained white point chromaticity value is equal to the target color temperature, and wherein the calculated proportional coefficient is the duty cycle when each odd light source is turned on, or the power output gain, or the actual opening signal. The number of boxes is 侬垆. 200933595 Finally, the present invention also provides a liquid crystal display device having a wide color gamut and a chromaticity control, comprising a backlight module, a display driving unit and a liquid crystal unit, wherein the backlight module comprises: at least one a processing unit, at least one backlight driving unit and at least one color sensing unit, wherein the processing unit is configured to generate a control signal, and the backlight driving unit receives the control signals to drive the backlight to be turned on and off, and at the same time, in the backlight Under the premise that the brightness is the same and fixed, the actual color temperature of each backlight is calculated by the color sensing unit, and the feedback signal corresponding to the backlight is generated according to the target color temperature and the actual color temperature and transmitted back to the processing unit. Therefore, when the backlight module generates the light source, the display driving unit receives the light source from the backlight module and generates a corresponding driving signal, and the liquid crystal unit uses the driving signals to determine the angle of the liquid crystal twisting so that the light source passes through The liquid crystal cell can be imaged on the display screen. Therefore, the apparatus and method for wide color gamut and chromaticity control disclosed by the present invention are based on two backlights having the same brightness, in the case of fixed brightness, by adjusting the duty cycle of the two backlights themselves. Or the power output gain, or the number of frames that the backlight is turned on, etc., to achieve a wider color gamut and simultaneously control the chromaticity. The purpose, technical contents, features, and effects achieved by the present invention will become more apparent from the detailed description of the embodiments and the accompanying drawings. 0 [Embodiment] Light-emitting diodes can provide high color rendering, mercury-free low pollution, small size, low voltage drive, better light intensity distribution and faster reaction speed. ... and so on, in order to effectively control the performance of the various primary colors in the backlight of the LED, so that it can exert a better luminous effect, the circuit design for control is usually quite complicated, Taking two sets of light-emitting diode backlights as an example, when color temperature control is performed, it usually affects its own brightness, so that the desired brightness performance cannot be achieved after adjusting to the target color temperature. Accordingly, the present invention provides an apparatus and method for both wide color gamut and chromaticity control to improve this difficulty. In the following, various possible embodiments of the present invention are presented, and are illustrated in detail by the accompanying drawings. 200933595 ❹ 〇 First, please refer to the second and third diagrams at the same time. The second diagram is a schematic diagram of the circuit architecture of a device with wide color gamut and chromaticity control, and the third diagram is The method of the present invention has a wide color gamut and chroma control method. The device with wide color gamut and chromaticity control in the second figure includes: a micro processing unit 1 一, a light emitting diode driving unit 14, two sets of light emitting diode backlights 161, 162 and a The color sensing unit 18, and the spectral difference between the two sets of light-emitting diode backlights 161, 162 must be greater than the minimum difference value specified in the industrial specifications. Generally, two sets of light-emitting diode backlights 161, 162 The difference in wavelength must be no less than 3 nm. In this embodiment, the two sets of LED backlights 161 and 162 are composed of a first LED backlight 161 and a second LED backlight 162. The first light-emitting diode backlight 161 is composed of a first red backlight 1611, a first green backlight 1612 and a first blue backlight 1613, and the first light-emitting diode backlight 162 is configured. The second red backlight 1621, the second green backlight 1622 and the second blue backlight 1623 are formed, and the processing for the signal is between the micro processing unit 1G and the LED driving unit 14 Setting at least a digital analog conversion material 121, 122; In the third figure, the control method of the present invention is provided, which includes the following divisions: First, in step S1, the two backlights (8), 162 are activated; and then in step S2, the two backlights 161, 162 are adjusted. The brightness is such that the backlights of a backlight 161, 162 are the same as the actual color temperature of the original 61, 162; finally, in the step rhyme, the second color is the actual color temperature to calculate the corresponding color temperature. The ratio coefficient of each of the actual color temperatures is such that the waiter adds the two backlights 161, 16 to the target color temperature, and wherein the external "...secret zip code value system is turned on (4) / the calculated scale coefficient is The mother-backlight source 161, 162 is based on '°, or the power output gain, or the number of frames actually opened is =, please also know according to the second, third and fourth pictures. For the present invention, there are two sets of different chromaticity coordinate distribution maps, #-目h, w τ - : W light tearing one of the items "color ^ τ mosquitoes" according to step S1, micro-processing single 200933595 yuan 10 series Generating a control signal to activate the LED driver unit 14 to drive the connection a first LED backlight 161 and a second LED backlight 162 on the LED driving unit 14 and a first red backlight 1611 in the first LED backlight 161 The green backlight 1612 and the first blue backlight 1613 respectively correspond to the first red chromaticity coordinate x1, the first green chromaticity coordinate y1 and the first blue chromaticity coordinate z1, and the first red color on the chromaticity coordinates. The stimulus values of the backlight 1611, the first green backlight 1612, and the first blue backlight 1613 for the human eye can be represented by X1, Y1, and Z1, respectively, and the stimulus value Υ1 of the first green backlight 1612 can also be used. Expressed as the brightness of the first light-emitting diode backlight 161, according to the above parameters, for the first light-emitting diode backlight source 161, the first red backlight 1611 of the first light-emitting diode backlight 161 The stimulation value Χ1, the stimulation value 第一1 of the first green backlight 1612, the stimulation value Ζ1 of the first blue backlight 1613 and the first red chromaticity coordinate x1, the first green chromaticity coordinate yi, and the first blue chromaticity coordinate z1 It is in accordance with the following formula (1) - formula (3): x1 = Χ 1 / (Χ 1+Υ1+Ζ1)..........(1) y1 = Y1/(X1+Y1+Z1)..........(2) z1 = 1 - X1 - y1 . . . . . . . (3) Similarly, the second red backlight 1621, the second green backlight 1622 and the second blue backlight 1623 of the second LED backlight 162 Corresponding to the second red chromaticity coordinate x2, the second green chromaticity coordinate y2 and the second blue chromaticity coordinate z2 ', respectively, and the second red backlight 1621, the second green backlight 1622 and the first The stimulus value of the two blue backlights 1623 for the human eye can be represented by X2, Y2, and Z2, respectively, so that the stimulus value Y2 of the second green backlight 1623 can also be used to represent the second LED backlight 162. The brightness, according to the above parameter 'for the second LED backlight 162, the stimulation value X2 of the second red backlight 1621 in the second LED backlight 162, the stimulation of the second green backlight 1622 The value Y2, the stimulation value Z2 of the second blue backlight 1623 and the second red chromaticity coordinate χ2, the second green chromaticity coordinate y2, and the second blue chromaticity coordinate z2 are in accordance with the following formula (4)-(6) Shown: 200933595 x2 = Χ2/( Χ2+Υ2+Ζ2)-. y2 = Υ2/(Χ2+Υ2+22) · . . 3 •.......(5) ζ2 = 1 - χ2 - y2 · · ·. Earth··.. ..... (6) According to the reference, in step S2, the first light-emitting diode backlight 161, the brightness yi and the brightness γ2 of the first-light-emitting body backlight 162 are first adjusted to the same brightness. 2, the brightness Y ', therefore, the brightness Y1 of the first-light-emitting diode backlight 161, the brightness 丫2 of the one-pole 4 light source 162 and the brightness Y of the _ are in accordance with the following formula (7): Y1 = Υ2 = Υ · · · ·· 〇.......(7) f and based on the hairpin 161 and the second LED backlight unit under the 'blur color sensing unit 18 to calculate The actual color temperature exhibited by the first LED backlight 161 and the second LED backlight 162 in this state, in detail, for the first LED backlight 161, the first illumination When the brightness of the diode backlight 161 is 丫彳, it has a first white point color temperature value τι in the chromaticity coordinates, and similarly, for the second illuminating diode 162 backlight, the second illuminating second When the brightness of the polar body backlight is Υ2, it is tied to the chromaticity seat. There is a second white point color temperature value Τ2, because the brightness of the first light-emitting diode Q backlight 161 and the second light-emitting diode backlight 162 after mixing is received by the human eye, and at the same time Further, the first white point color temperature value Τ1 and the second white point color temperature value Τ2 after mixing can reach the target chromaticity Τ ' and conform to the relationship as shown in the following formula (8): T = a*T1 + b*T2 . . . (8) and, the sum of a and b is 1 » Continuation, as shown in step S3, the first light-emitting diode backlight can be superimposed The chromaticity of the 161 and the second LED backlight 162 is such that the stimulus observed by the human eye can be added to the target chromaticity Τ', and the means used can be adjusted by adjusting the backlight of the first LED The duty cycle of the source 161 and the second illumination/one body backlight 162, or the power output gain, or the number of frames to be turned on, and the like. 12 200933595 First, the duty cycle of adjusting the opening of the first LED backlight 161 and the second LED backlight 162 is taken as an example, since the first LED backlight 161 and the second LED are illuminated. The diode backlight 162 has the same brightness 丫, but 'in terms of the color temperature value on the chromaticity coordinates, the first white point color temperature value T1 is greater than the target chromaticity T and the second white point color temperature value T2 is smaller than the target The chromaticity τ, therefore, in the same frame, the first illuminating diode backlight 161 and the second illuminating diode backlight 162 are simultaneously turned on at different duty cycles to achieve the first illuminating diode backlight The color temperature value obtained after the chromaticity superposition of the source 161 and the second LED backlight 162 is equal to the target chromaticity T, and wherein the value of a in the equation (8) is the first LED backlight. The responsibility week® and b values corresponding to 161 are the duty cycle corresponding to the second LED backlight 162. In addition, the power output gain of the first LED backlight 161 and the second LED backlight 162 are adjusted as an example, because the first LED backlight 161 and the second LED are used. The backlight 162 has the same brightness γ, and the first LED backlight 161 and the second LED backlight 162 have the same duty cycle, so 'through the first LED backlight 161 and The second LED backlight 162 is output at different powers, so that the color temperature values obtained after the chromaticity superposition of the first LED backlight 161 and the second LED backlight 162 are equal to the target color. Degree T, and in this embodiment, the value 3 corresponding to the equation (9) is the power output gain corresponding to the first LED backlight 161, and the b value is the second LED backlight. The power output gain corresponding to source 162. Furthermore, the number of frames for adjusting the opening of the first LED backlight 161 and the second LED backlight 162 is taken as an example for the first LED backlight 161 and the first illumination. The diode backlight 162 has the same brightness γ, and because the light-emitting one-pole system has a fast response characteristic, the first light-emitting diode backlight 161 and the second light-emitting diode backlight 162 are turned on. The time is cut into a fine sub-frame, and a part of the sub-frame is used to turn on the first LED backlight 161, and another part of the sub-frame is used to turn on the second LED backlight 162. The color temperature values of the first light-emitting diode back 161 and the second light-emitting diode back light 162 obtained after the raising of the frame 13 200933595 ^ subframe are equal to the target chromaticity, and, in this embodiment The value of a corresponding to the equation (8) in the sample is the number of subframes corresponding to the first illumination diode backlight 161 when turned on, and the b value is when the second LED backlight 162 is turned on. Corresponding to the above, it is known that one of the disclosed inventions A device and method for wide color gamut and chromaticity control's use the two sets of illuminating diode chromaticity of the same brightness but different color temperature to achieve the final target chromaticity, which is applied to the liquid crystal display. , but without increasing the burden of designing the color sensing unit on the control loop, it is also possible to display the H display control mode so that the user can freely change the desired target chromaticity without affecting the brightness of the overall picture. The present invention can achieve a simplified hard and soft design, providing a more user-friendly interface, _, and maintaining the image. The above description of the features of the present invention can explain the contents of the system. And the equivalent modifications or modifications made by the invention are not included in the scope of the patent application described below. ❹ [Simple description of the diagram] The second is the module, the two sets of different primary spectrum backlights of different spectrum == is the invention, the t-type of the sand-filled circuit structure with wide color gamut and chromaticity control A flow chart of a method for both wide color gamut and chromaticity control of the invention. The fourth picture is the distribution map of the chromaticity coordinates of the three-horse back wire with two different spectra in (4).夂, 〒121, 122 digital analog conversion unit [main component symbol description] 10 micro processing unit 200933595 14 light emitting diode driving unit 162 second light emitting diode backlight 1612 first green backlight 1621 second red backlight 1623 second blue backlight 161 first light emitting diode backlight 1611 first red backlight 1613 first blue backlight 1622 second green backlight 18 color sensing unit ❹ 15