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TW200949814A - Liquid crystal display device and driving method thereof - Google Patents

Liquid crystal display device and driving method thereof Download PDF

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Publication number
TW200949814A
TW200949814A TW97119905A TW97119905A TW200949814A TW 200949814 A TW200949814 A TW 200949814A TW 97119905 A TW97119905 A TW 97119905A TW 97119905 A TW97119905 A TW 97119905A TW 200949814 A TW200949814 A TW 200949814A
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Taiwan
Prior art keywords
image
liquid crystal
crystal display
image block
backlight
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TW97119905A
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Chinese (zh)
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TWI400683B (en
Inventor
Chih-Yung Hsieh
Yi-Lin Ho
Chia-Hang Lee
Fu-Chi Yang
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Chi Mei Optoelectronics Corp
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  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

This present invention relates to a liquid crystal display device and the driving method thereof, and more especially to an image division driving method which is applied to the liquid crystal display device. The image data are divided into multi-domain and then each domain can be analyzed by means of the image division driving method. As a result, a lower gray level image data are adjusted to a higher gray level image data. At the same time, a backlight control signal is outputted to a backlight control module to darken the domain of the backlight control module corresponding to the adjusted domain of the image data in order to reduce the color shift problem.

Description

200949814 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種液晶顯示器與驅動方法,尤指一種 應用影像分割技術’調整屬於高色偏差區域之影像區塊, 減少色偏差。 【先前技術】 請參閱第1圖,係為習知液晶顯示器之系統架構圖。 如第1圖所示,以解析度為1024*768之液晶顯示器ι〇〇為 例進行下述說明。該液晶顯示器1〇〇具有用以驅動1〇24行 之紅色畫素、1024行之綠色晝素以及1024行之藍色畫素, ® 總共有1〇24*3條資料線(Data Line)與768條掃描線(Scan Llne)。該資料線(Data Line)與掃描線(Scan [沁勾分別由資 料驅動器(Data Driver)ll〇以及掃描驅動器(Scan Dryer)i2〇所驅動。該等資料驅動器(Data Driver)ii〇以及 該等掃描驅動器(Scan Driver) 120係由一控制器13〇所輸出 之資料控制訊號Control_D的控制下,依序接收該控制器 =〇所傳送之多筆晝素資料PD進行處理,並輸出相對應之 。壓=驅動該液晶顯示器100之多條資料線。而該等掃描 ,動器120則是在該控制器13〇所輸出的掃描控制訊號 ❿—S的控制下,依序輸出掃描訊號,對每條掃描線進 订刼描。每條掃描線與每條資料線交又之處,係定義一個 ^素j,掃描所有的掃描線之後’所有的畫素將被驅動完 ’以完成一個畫面(Frame)之顯示。 =般而言,由於正視液晶顯示器1〇〇與侧視液晶顯示 i曰®時之光傳透率並不相同。因為不同角度的入射光於 者:&中,所產生的位相差(ReUrdati〇n)並不相同。因此, ^ =察角度不同時,光所受到的偏折係數不相同,導致穿 不同也不7樣。所以,不同的視角會造成所顯示的光亮度 而虽不同色光(例如紅色光、綠色光以及藍色光)在 200949814 正視與侧視時各以不同亮度比例混色後, 視所顯^的顏色不相同的色偏差現象。 i視”側 職是之故,本發明繁於習知技術之缺失 發明之意念’發明出本案之『液晶顯示;( 【發明内容】 、驅動方法』。 本發明的主要目的為提供一種液晶顯示器盥驅 法,尤指一種應用影像分割技術 ^ 之影像區塊⑨⑦回色偏差區域 法,另:目的為提供一種液晶顯示器與驅動方 複數個二傻=分割技術’將該影像資料分割成為 拳上該複數個影像區塊進行影像分析, 調正屬於间色偏差區域之影像區塊,減少色偏差。 去目的為提供一種液晶顯示器與驅動方 …固二二像分割技術,將該影像資料分割成為 複數個影像區塊,針對該複數個影像區塊進行影像分析, 將該影像區塊之一低灰階影像資料調整為一 料,同時輸出-背光控制訊號至一背光控制模組;; 控制模組則控制該影像區塊相對應之背光模組區塊碉暗 該影像區塊之背光,以減少該影像區塊之色偏差的問題。 本發明的另一目的為提供一種液晶顯示器與驅動方 ❹法,、尤指-種應用-校正灰階值產生器,將該影像資料分 割成為複數個影像區塊,針對該複數個影像區塊進行影像 分析,將該影像區塊之一低灰階影像資料調整為一高灰階 影像資料,同時輸出-背光控制訊號至一背光控制模組, 該背光控制模組則控制該影像區塊相對應之背光模組區 塊,調暗該影像區塊之背光,以減少該影像區塊之色偏差 的問題。 為達成上述目的,本發明提供一種液晶顯示器驅動方 法,包含下列步驟: 6 200949814 將一影像資料分割成為複數個影像區塊; 針對該複數個影像區塊進行影像分析,確認該等影 像區塊是屬於高色偏差區域或是屬於低色偏差區域;以 當該影像區塊屬於高色偏差區域,則進行色偏差調 整,將該影像區塊之一低灰階影像資料調整平移成為一高 灰階影像資料,以減少該影像區塊之色偏差。 ’问 本案得藉由以下列圖示與詳細說明’俾得一更入 了解。 ' 【實施方式】 參 >為描述本發明之顯示器之顯示方法及顯示器,以下述 詳細實施例說明之,然本發明之權利範圍並不侷限在下述 實施例。 :參閱第2A圖,係為本案第—較佳實施例之液晶顯示 器之系統架構圖。如第2A圖所示,以解析度為MM”” j晶顯不器200為例進行下述說明。該液晶顯示器2〇〇 驅動1G24行之紅色畫素、編行之綠色畫素以 I 藍色畫素,總共有1〇24*3條資料線(DataUne) 線768,指線(Scan L—。該資料線⑴仙l㈣與掃描 Ϊ動r^ine)分別由資料驅動器(Data Driver)21G以及掃描 動: = Driver)22〇所驅動。該等資料驅動器(D咖 制及該等掃描驅動器(Scan Driver)22〇係由一控 出之資料控制訊號c〇ntr〇i-D的控制下,依 理=匕230所傳送之多筆畫素資料PD進行處 ΐ料ί 對應之電麼以驅動該液晶顯示器2〇〇之多條 出的掃等f描驅動器220則是在該控制器230所輸 號,對:二3,、crtr°Ls的控制下,依序輸*掃描訊 叉之處A田線進行掃描。每條掃描、線與每條資料線交 ’係疋義-個畫素。每掃描所有的掃描線之後,所 200949814 有的畫素將被驅動完畢,以完成一個畫面(Frame)之顯示。 /、中°亥控制器230内更包含一校正灰階值產生器 23 1 ^玄校正灰階值產生器1接收到一影像資料,將該影 像資料分割成為複數個影像區塊,針對該複數個影像區塊 進行影像分析,確認該等影像區塊是屬於高色偏差區域 (Color-shift region)或是屬於低色偏差區域 LC〇l〇r-shift-less regi〇n),如第2B圖所示。如果該影像區 匕於低色偏差區域(Color-shift-less region),則該校正灰 階值產生器231不進行色偏差調整,亦即不將該影像區塊 ^ ,灰陏衫像資料調整平移成為一高灰階影像資料,直 ,f影像區塊之影像資料輸出。如果該影像區塊屬於高 區域(C〇l〇r-shift region),則該校正灰階值產生器 -料it偏差調整,亦即將該影像區塊之一低灰階影像 二=Η移成為—高灰階影像資料’同時該校正灰階值 W去盤 出一背光控制訊號Gain-blk至一背光控制模 鉗庫於圖上),該背光控制模組則控制該影像區塊相 二c模組區塊,調暗該影像區塊之背光,以減少該 差的問題。因此部分或是全部之多筆畫素 整,並同拉會!該校正灰階值產生器231進行色偏差調 ❹ :多條?整輸出相對應之電壓以驅動該液晶顯示器2 0 0 :該等掃描驅動器220則是在該控制器230 ,輸出的知描控制訊號c〇ntr〇1 描訊號,對每條播y&厂 杈市』下依序輸出柃 線交又之虛H 掃描。每條掃描線與每條資料 個畫素。每掃描所有的掃描線之後, :有=將被驅動完畢’以完成一個晝面(Frame)之顯 方法第—較佳實施例之液晶顯示器與驅動 无2到減少畫面中色偏差的問題。 驅動方、、去:,-3 f所不,係為本案第-較佳實施例之液晶 動方去流私不意圖。如第3圖所示,當—影像輸入時(請 8 200949814 ^工气塊編號31〇),本第一較佳實施例之液晶顯示器將該 衫像貝料分割成為複數個影像區塊(請參考方塊編號 320),針對該複數個影像區塊進行影像分析(請參考方塊編 =330),確認該等影像區塊是屬於高色偏差區域 (C〇l〇r-shlft region)或是屬於低色偏差區域 (C:r-shlft_less regi〇n>。如果該影像區塊屬於低色偏差區 域(C〇l〇r-shlft-lessregion)’則不進行色偏差調整,亦即不 將該影像區塊之-減階影像資料調整平移成為一高灰階 =貝料,直接將該影像區塊之影像資料輸出(請參考方塊 編號350)。如果該影像區塊屬於高色偏差區域(c〇i〇r_s碰 ❿ region),則進行色偏差調整,亦即將該影像區塊之一低灰 階影像資料調整平移成為一高灰階影像資料(請參考方塊 編號340),同時輸出一背光控制訊號GainJ)ik(請參考方塊 2號360)至-背光控制模組,該背光控制模組則控制該影 ^區塊相對應之背光模組區塊,調暗該影像區塊之背光(請 ,考方塊編號370),以減少該影像區塊之色偏差的問題。 2此部分或是全部之多筆影像畫素資料會進行色偏差調 ,並同時調整輸出相對應之電壓以驅動該液晶顯示器2〇〇 之多條資料線。而該等掃描驅動器22〇則是在該控制器23〇 二輸出的掃描控制訊號Contr〇I_s的控制下,依序輸出掃 :,號,對每條掃描線進行掃描。每條掃描線與每條資料 線交又之處,係定義一個畫素。每掃描所有的掃描線之後, 所有的畫素將被驅動完畢,以完成一個畫面(Frame)之顯 =。因此可以利用本第一較佳實施例之液晶,顯示器與驅動 方法達到減少畫面_色偏差的問題。 4參考第4圖所示,係為本案第一較佳實施例之該校 正灰階值產生器23 1内部方塊示意圖。如第4圖所示,該 ,,灰階值產生器231包含一影像區塊分割單元231a、— 汁算單元231B «及一乘法單元231C。該影像區塊分割單 9 200949814 兀23〗A係將該影像輸入3丨0輸入之一影像進行影像區塊分 割’並針對該複數個影像區塊進行影像分析,蜂認該等影 像區塊是屬於高色偏差區域(Col〇r_shift regi〇n)或是屬於 低色偏差區域(Colonhift-less region)。如果該影像區塊屬 於低色偏差區域(Color-shift-less regi〇n),則不進行色偏差 調整,亦即不將該影像區塊之一低灰階影像資料調整平移 成為一高灰階影像資料。因此該計算單元23 1B輸出之一增 益值Gain—im為卜且該影像區塊分割單元以丨八將屬於低 色偏差區域(Col〇r-shift-less regi〇n)之該影像區塊之影像 資料灰階值與增益值Gain—im經由該乘法單元23ic相乘後 • 輸出。又該等掃描驅動器(Scan DriVer)220係由該控制器 230所輸出之資料控制訊號c〇ntr〇1—D的控制下,依序接收 該控制器230所傳送之多筆該影像區塊之影像資料灰階值 與增益值Gain—im乘積值進行處理,並輸出相對應之電壓 以驅動該液晶顯示器2〇〇之多條資料線。 ,如果該影像區塊屬於高色偏差區域(c〇1〇r_shift region) ’則進行色偏差調整,亦即將該影像區塊之一低灰 景/像資料調整平移成為一高灰階影像資料,因此該計算 ,元]31B輸出之一增益值Gain_im大於1,且該影像區塊 分割單元231A將屬於高色偏差區域(c〇1〇r_shm regi〇n)之 ❹該f像區塊之影像資料灰階值與增益值Gain—im經由該乘 法器、23 1 C相乘後輸出,將該影像區塊之一低灰階影像資料 調整平移成為—高灰階影像資料。又該等掃描驅動器(Scan Dnver)220係由該控制器23〇所輸出之資料控制訊號 Control^D的控制下,依序接收該控制器23〇所傳送之多筆 該影像區塊之影像資料灰階值與增益值&乘積值進 ^處f ^並輪出相對應之電壓以驅動該液晶顯示器2〇〇之 ^條資料線。此時該計算單元231B輸出一背光控制訊號 ain一blk至一背光控制模組該背光控制模組則控制該影 200949814 像區塊相對應之背光模組區塊’調暗該影像區塊之背光, 以減少該影像區塊之色偏差的問題。因此部分或是全 多筆影像畫素資料會進行色偏差調整,並同時調整輸出相 對應之電壓以驅動該液晶顯示器200之多條資料線。而誃 等掃描驅動器220則是在該控制器23Q所輸出的掃描 訊號、C〇ntrol_S的控制下,依序輸出掃描訊號,對每條 描線進行掃描。每條掃描線與每條資料線交叉之處,係— 義-,畫素。每掃描所有的掃描線之後,所有的畫素將^ 驅動元畢,以完成一個畫面(Frame)之顯示。因此可以利用 本第一較佳實施例之液晶顯示器與驅動方法達 ^ 中色偏差的問題。 i卸 請參考第5圖所示,係為本案第一較佳實施例之液晶 顯示模組之影像顯示區塊對應背光模組之背光模組區塊干 意圖。如第5圖所示,該背光模組可以被分割成為複數個 背光模組區塊,該背光模組區塊包含複數個背光源,提供 背光源給對應之影像顯示區塊。當影像區塊是屬於低色偏 差區域(Color-shift-less region),則不進行色偏差調整,亦 即不將該影像區塊之一低灰階影像資料調整平移成為一高 灰階影像資料,直接將該影像區塊之影像資料輸出。如^ 該影像區塊屬於高色偏差區域^⑴扣-仏出^以⑽厂則進行 〇 色偏差調整,亦即將該影像區塊之一低灰階影像資料調整 平移成為一高灰階影像資料,同時輸出一背光控制訊號 Gain—blk至一背光控制模組,該背光控制模組則控制該影 像區塊相對應之背光模組區塊,調暗該影像區塊之背光, 以減少該影像區塊之色偏差的問題。因此可以利用本第一 較佳實施例之液晶顯示器與驅動方法達到減少畫面中色偏 差的問題。 在本實施例中是以固定分割之影像區塊之大小以及背 光模組區塊之大小來進行說明,然而實施應用本技術時, 200949814 ^不限制影像區塊之大小以及背光模組區土鬼之大小為固定 分割,亦可為動態性分割,動態性調整影像區塊之分割大 小以及背光模組區塊之分割大小。 又在本實施例中係針對影像區塊之紅色畫素、綠色畫 素以及藍色畫素之像素資料個別進行進行色偏差調整,將 該影像區塊之個別低灰階影像資料調整平移成為一高灰 影像資料。 一另外,該背光控制模組則控制該影像區塊相對應之背 光模組區塊,調暗該影像區塊背光之方法有兩種,一種是 調整背光亮度之大小,另一種是調整背光開啟時間的長短 _ 來控制該影像區塊之背光。 上述本發明之具體實施例與圖示係使熟知此技術之人 士所能瞭解,然而本專利之權利範圍並不侷限在上述實施 例。 綜合上述’本發明之目的已充分且有效地被揭露。本 案得由熟知此技術之人士任施匠思而為諸般修飾,然皆不 脫如附申請專利範圍所欲保護者。 【圖式簡單說明】 第1圖係為習知液晶顯示器之系統架構圖。 第2A圖係為本案第一較佳實施例之液晶顯示器之系 〇 統架構圖。 第2B圖係為本案第一較佳實施例之影像區塊是屬於 高色偏差區域(Color-shift regi〇n)或是屬於低色偏差區域 (Color-shift-less region)判斷示意圖。 第3圖係為本案第一較佳實施例之液晶驅動方法流程 示意圖。 第4圖係為本案第一較佳實施例之該校正灰階值產生 器内部方塊示意圖。 第5圖係為本案第一較佳實施例之液晶顯示模組之影 12 200949814 像顯示區塊對應背光模組之背光模組區塊示意圖。 【主要元件符號說明】 100液晶顯示器 1 10資料驅動器(Data Driver) 1 2 〇 知描驅動器(S c a n D r i v e r) 130控制器 200液晶顯示器 210資料驅動器(Data Driver) 220 掃播驅動器(scarl Driver) 230控制器 g 231校正灰階值產生器 2 3 1 A影像區塊分割單元 231B計算單元 231C乘法單元 3 1 0影像輸入 320將該影像資料分割成為複數個影像區塊 330對該複數個影像區塊進行影像分析 340將該影像區塊之一灰階影像資料調整平移 3 50影像資料輸出 360輸出一背光控制訊號 ® 370控制背光模組區塊,調暗該影像區塊之背光 C〇ntf〇l_D資料控制訊號 Control—S掃描控制訊號 Gain_blk背光控制訊號 Gain_im增益值 PD畫素資料 13200949814 IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display and a driving method, and more particularly to an image segmentation technique for adjusting an image block belonging to a high color deviation region to reduce color deviation. [Prior Art] Please refer to Fig. 1, which is a system architecture diagram of a conventional liquid crystal display. As shown in Fig. 1, the following description will be made by taking a liquid crystal display ι with a resolution of 1024*768 as an example. The liquid crystal display 1 has a red pixel for driving 1 to 24 lines, a green pixel of 1024 lines, and a blue pixel of 1024 lines, and there are a total of 1 24*3 data lines and data lines. 768 scan lines (Scan Llne). The data line and the scan line (Scan) are respectively driven by a data driver (Data Driver) and a scan driver (Scan Dryer) i2. These data drivers (Data Driver) ii and these The scan driver (Scan Driver) 120 is controlled by a control signal Control_D outputted by a controller 13 to sequentially receive the multi-pixel data PD transmitted by the controller=〇, and output corresponding signals. Pressing = driving a plurality of data lines of the liquid crystal display 100. The scans and actuators 120 sequentially output scan signals under the control of the scan control signal ❿-S outputted by the controller 13 Each scan line is subscribed to scan. Each scan line intersects each data line, defining a ^j, after scanning all the scan lines, 'all pixels will be driven' to complete a picture (Frame) display. In general, the light transmission rate is different when the liquid crystal display 1〇〇 and the side view liquid crystal display i曰® are different. Because the incident light of different angles is in: & Phase difference produced (R eUrdati〇n) is not the same. Therefore, when the angles are different, the deflection coefficient of the light is different, which results in different wearing. Therefore, different viewing angles will cause the brightness of the displayed light to be different. The color light (such as red light, green light, and blue light) is mixed in different brightness ratios in 200949814 for both front and side views, and the color deviation phenomenon is different depending on the color displayed. The invention is invented by the prior art, and the invention is invented by the liquid crystal display (the invention content and the driving method). The main object of the present invention is to provide a liquid crystal display driving method, especially an application image segmentation. Technique ^ Image block 97 color deviation deviation area method, another: the purpose is to provide a liquid crystal display and driving side multiple two silly = segmentation technology 'divide the image data into a plurality of image blocks for image analysis Adjust the image block belonging to the inter-color deviation area to reduce the color deviation. The purpose is to provide a liquid crystal display and driver... Solid two-image segmentation technology Dividing the image data into a plurality of image blocks, performing image analysis on the plurality of image blocks, adjusting one low-gray image data of the image block to one material, and simultaneously outputting a backlight control signal to a backlight control The control module controls the backlight module block corresponding to the image block to darken the backlight of the image block to reduce the color deviation of the image block. Another object of the present invention is to provide A liquid crystal display and driving method, in particular, an application-correcting grayscale value generator, dividing the image data into a plurality of image blocks, performing image analysis on the plurality of image blocks, and performing the image region One of the low-gray image data of the block is adjusted to a high-gray image data, and the output-backlight control signal is outputted to a backlight control module, and the backlight control module controls the backlight module block corresponding to the image block. The backlight of the image block is dimmed to reduce the color deviation of the image block. In order to achieve the above object, the present invention provides a liquid crystal display driving method, comprising the following steps: 6 200949814 dividing an image data into a plurality of image blocks; performing image analysis on the plurality of image blocks to confirm that the image blocks are It belongs to the high color deviation area or belongs to the low color deviation area; when the image block belongs to the high color deviation area, the color deviation adjustment is performed, and one low gray scale image data of the image block is adjusted and translated into a high gray level. Image data to reduce the color deviation of the image block. ' Ask this case to get a better understanding by using the following illustrations and detailed instructions. [Embodiment] The display method and display for describing the display of the present invention are described in the following detailed embodiments, but the scope of the present invention is not limited to the following embodiments. See Fig. 2A, which is a system architecture diagram of a liquid crystal display device of the preferred embodiment of the present invention. As shown in FIG. 2A, the following description will be made by taking the resolution of MM"" j crystal display device 200 as an example. The liquid crystal display 2 〇〇 drives 1G24 rows of red pixels, programmed green pixels to I blue pixels, a total of 1 〇 24 * 3 data lines (DataUne) line 768, finger line (Scan L -. The data line (1) fairy l (four) and scan r r ^ ine) are driven by a data driver (Data Driver) 21G and a scan driver: = Driver) 22 分别, respectively. The data drivers (Dake and Scan Driver 22) are controlled by a controlled data control signal c〇ntr〇iD, and the PD data transmitted by the controller 匕230 is performed by PD. ΐ ί ί 对应 对应 对应 对应 对应 对应 ί ί ί ί ί ί ί ί ί ί 液晶 ί ί ί ί ί ί ί ί ί ί ί ί ί f f f f f f f f f f f f f f f f f f f f In order to scan the signal line, the A field line is scanned. Each scan, line and each data line are connected to the 'systems' - a single pixel. After scanning all the scan lines, the 200949814 has a pixel. It will be driven to complete the display of a frame. /, The Zhonghe controller 230 further includes a corrected grayscale value generator 23 1 ^ The ambiguous grayscale value generator 1 receives an image data, The image data is divided into a plurality of image blocks, and image analysis is performed on the plurality of image blocks to confirm whether the image blocks belong to a color-shift region or belong to a low-color deviation region LC〇. L〇r-shift-less regi〇n), as shown in Figure 2B. If the image area is in a color-shift-less region, the corrected gray-scale value generator 231 does not perform color-offset adjustment, that is, the image block is not adjusted. Translate into a high grayscale image data, straight, f image block image data output. If the image block belongs to a high region (C〇l〇r-shift region), the corrected grayscale value generator-feed it is adjusted, that is, one of the image blocks is low grayscale image - high grayscale image data 'at the same time, the gray scale value is corrected to remove a backlight control signal Gain-blk to a backlight control die clamp library on the map), and the backlight control module controls the image block phase two The module block dims the backlight of the image block to reduce the difference. Therefore, some or all of the many strokes are perfect and will be drawn together! The corrected gray scale value generator 231 performs color deviation adjustment: multiple pieces? The corresponding output voltage is used to drive the liquid crystal display 200: the scan driver 220 is at the controller 230, and the output control signal c〇ntr〇1 is printed, for each broadcast y& 』In the order of the output of the 柃 line intersection and the virtual H scan. Each scan line and each data pixel. After each scan line is scanned, there is a problem that = will be driven to complete a frame. The liquid crystal display and the drive of the preferred embodiment have no problem of reducing the color deviation in the picture. The driving side, the going:, -3 f is not the liquid crystal moving party of the first preferred embodiment of the present invention. As shown in FIG. 3, when the image is input (please 8 200949814 ^ gas block number 31〇), the liquid crystal display of the first preferred embodiment divides the shirt into a plurality of image blocks. Refer to block number 320), perform image analysis on the plurality of image blocks (refer to block code = 330), and confirm that the image blocks belong to a high color deviation region (C〇l〇r-shlft region) or belong to Low color deviation region (C: r-shlft_less regi〇n>. If the image block belongs to the low color deviation region (C〇l〇r-shlft-lessregion)', the color deviation adjustment is not performed, that is, the image is not The block-reduced image data is adjusted to be a high gray level=beauty material, and the image data of the image block is directly outputted (refer to block number 350). If the image block belongs to a high color deviation region (c〇 When i〇r_s touches the region), the color deviation adjustment is performed, that is, the low grayscale image data of the image block is adjusted and translated into a high grayscale image data (refer to block number 340), and a backlight control signal is outputted at the same time. GainJ)ik (please refer to block 2, 360) to a backlight control module, wherein the backlight control module controls the backlight module block corresponding to the image block, and dims the backlight of the image block (please, test block number 370) to reduce the image block The problem of color deviation. 2 This part or all of the image pixel data will be adjusted for color deviation, and at the same time adjust the corresponding voltage to drive the data lines of the liquid crystal display 2〇〇. The scan drivers 22 are sequentially scanned and scanned for each scan line under the control of the scan control signal Contr〇I_s outputted by the controller 23〇. Each pixel is intersected with each data line to define a pixel. After scanning all the scan lines, all the pixels will be driven to complete the display of a frame. Therefore, the liquid crystal of the first preferred embodiment can be utilized, and the display and the driving method can achieve the problem of reducing the picture-color deviation. 4 is a block diagram showing the internal block of the corrected gray scale value generator 23 1 of the first preferred embodiment of the present invention. As shown in FIG. 4, the grayscale value generator 231 includes an image block dividing unit 231a, a juice calculating unit 231B « and a multiplying unit 231C. The image block division single 9 200949814 兀 23〗 A is to input the image into the 3 丨 0 input image for image segmentation ' and perform image analysis on the plurality of image blocks, the bee recognizes that the image block is It belongs to the high color deviation region (Col〇r_shift regi〇n) or belongs to the low color deviation region (Colonhift-less region). If the image block belongs to a low-color deviation region (Color-shift-less regi〇n), the color deviation adjustment is not performed, that is, the low-gray image data of one of the image blocks is not adjusted and translated into a high gray level. video material. Therefore, the calculating unit 23 1B outputs one of the gain values Gain_im and the image block dividing unit will belong to the image block of the low color deviation region (Col〇r-shift-less regi〇n). The image data grayscale value and the gain value Gain_im are multiplied by the multiplication unit 23ic and output. The scan driver (Scan DriVer) 220 receives the plurality of image blocks transmitted by the controller 230 under the control of the data control signals c〇ntr〇1-D output by the controller 230. The grayscale value of the image data is processed by the Gain_im product value of the gain value, and the corresponding voltage is output to drive the plurality of data lines of the liquid crystal display. If the image block belongs to the high color deviation region (c〇1〇r_shift region), the color deviation adjustment is performed, that is, the low gray scene/image data of one of the image blocks is adjusted to be a high grayscale image data. Therefore, the calculation, the element 31B output one gain value Gain_im is greater than 1, and the image block dividing unit 231A belongs to the image data of the f image block belonging to the high color deviation region (c〇1〇r_shm regi〇n). The grayscale value and the gain value Gain_im are multiplied by the multiplier, 23 1 C, and output, and the low grayscale image data of one of the image blocks is adjusted and translated into high grayscale image data. And the scan driver (Scan Dnver) 220 receives the image data of the plurality of image blocks transmitted by the controller 23〇 under the control of the data control signal Control^D outputted by the controller 23〇. The grayscale value and the gain value & the product value are passed to f^ and the corresponding voltage is rotated to drive the data line of the liquid crystal display. At this time, the computing unit 231B outputs a backlight control signal ain-blk to a backlight control module, and the backlight control module controls the backlight module block corresponding to the block 200949814 to dim the backlight of the image block. , to reduce the problem of color deviation of the image block. Therefore, part or all of the image pixel data is adjusted for color deviation, and the voltage corresponding to the output phase is adjusted to drive a plurality of data lines of the liquid crystal display 200. The scan driver 220, etc., outputs the scan signals in sequence under the control of the scan signal and C〇ntrol_S outputted by the controller 23Q, and scans each of the traces. Where each scan line intersects with each data line, it is - meaning -, pixel. After scanning all the scan lines, all the pixels will be driven to complete the display of a frame. Therefore, the liquid crystal display and the driving method of the first preferred embodiment can be utilized to achieve the problem of color deviation. Please refer to FIG. 5, which is the image display block of the liquid crystal display module of the first preferred embodiment of the present invention corresponding to the backlight module block of the backlight module. As shown in FIG. 5, the backlight module can be divided into a plurality of backlight module blocks, and the backlight module block includes a plurality of backlights to provide a backlight to the corresponding image display block. When the image block belongs to the color-shift-less region, the color deviation adjustment is not performed, that is, the low-gray image data of one of the image blocks is not adjusted and translated into a high-gray image data. Directly output the image data of the image block. For example, the image block belongs to the high color deviation area ^(1) buckle-仏出^ (10) factory performs the color deviation adjustment, that is, the low gray level image data of the image block is adjusted and translated into a high gray level image data. Simultaneously outputting a backlight control signal Gain-blk to a backlight control module, the backlight control module controls a backlight module block corresponding to the image block, and dims the backlight of the image block to reduce the image. The problem of color deviation of the block. Therefore, the liquid crystal display and the driving method of the first preferred embodiment can be utilized to achieve the problem of reducing the color shift in the picture. In this embodiment, the size of the image block that is fixedly divided and the size of the block of the backlight module are described. However, when the application of the present technology is implemented, 200949814 ^ does not limit the size of the image block and the ghost module area The size is fixed segmentation, and can also be dynamic segmentation, dynamically adjusting the segmentation size of the image block and the segmentation size of the backlight module block. In this embodiment, the color difference adjustment is performed on the pixel data of the red pixel, the green pixel, and the blue pixel of the image block, and the individual low grayscale image data of the image block is adjusted and translated into one. High gray image data. In addition, the backlight control module controls the backlight module block corresponding to the image block, and there are two methods for dimming the image block backlight, one is to adjust the brightness of the backlight, and the other is to adjust the backlight to open. The length of time _ to control the backlight of the image block. The above-described embodiments and illustrations of the present invention are known to those skilled in the art, but the scope of the patent is not limited to the above embodiments. The above-mentioned objects of the present invention have been fully and effectively disclosed. This case has been modified by those skilled in the art, and is not intended to be protected by the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a system architecture diagram of a conventional liquid crystal display. Fig. 2A is a structural diagram of the liquid crystal display of the first preferred embodiment of the present invention. FIG. 2B is a schematic diagram of the image block of the first preferred embodiment of the present invention belonging to a color-shift regi〇n or a color-shift-less region. Fig. 3 is a flow chart showing the flow of the liquid crystal driving method of the first preferred embodiment of the present invention. Figure 4 is a block diagram showing the internal block of the corrected gray scale value generator of the first preferred embodiment of the present invention. Figure 5 is a view of the liquid crystal display module of the first preferred embodiment of the present invention. 12 200949814 A schematic diagram of a backlight module block corresponding to a backlight module of a display block. [Main component symbol description] 100 LCD display 1 10 data driver (Data Driver) 1 2 can 描 驱动 drive (S can D river) 130 controller 200 liquid crystal display 210 data driver (Data Driver) 220 Sweep driver (scarl Driver) 230 controller g 231 correction gray scale value generator 2 3 1 A image block division unit 231B calculation unit 231C multiplication unit 3 1 0 image input 320 divides the image data into a plurality of image blocks 330 for the plurality of image regions Block image analysis 340 adjusts one of the grayscale image data of the image block. 3 50 image data output 360 outputs a backlight control signal® 370 controls the backlight module block, and dims the backlight of the image block C〇ntf〇 l_D data control signal Control-S scan control signal Gain_blk backlight control signal Gain_im gain value PD pixel data 13

Claims (1)

200949814 十、申請專利範圍: 1. 一種液晶顯示器,包含: 複數條資料線; 複數條掃描線; 複數個資料驅動器,用以驅動該等資料線; 複數個掃描驅動器,用以驅動該等掃描線;以及 值產:,包含—校正灰階值產生11,該校正灰階 產生接收一影像資料,將該影像資料分割成 傻,對該ΐ數個影像區塊進行影像分析,以200949814 X. Patent application scope: 1. A liquid crystal display comprising: a plurality of data lines; a plurality of scanning lines; a plurality of data drivers for driving the data lines; and a plurality of scanning drivers for driving the scanning lines And the value of the output: the included-corrected grayscale value generation 11, the grayscale generation generates an image data, divides the image data into silly, and performs image analysis on the plurality of image blocks to _ οχ衫像區塊為咼色偏差區域與低色偏差區域其中 t ’其中’當判斷該影像區塊為該高色偏差區域,'則 =灰階值產生器將該影像區塊之一低灰階影像資料 調整為一咼灰階影像資料,以減少該影像區塊之色偏差。 第1項所述之液晶顯示器,其中該校正灰階值產生器 包含: 一影像區塊分割單元,係將該影像資料分割成為 複數個影像區塊,並針對該複數個影像區塊進行影像 分析,以判斷該等影像區塊為高色偏差區域與低色偏 差區域其中之一; 一 sf算單元,該計算單元根據該影像區塊分割單 元之判斷結果,提供一増益值;以及 一乘法單元,將該影像區塊之影像資料灰階值與 該增益值相乘後輸出’以減少該影像區塊之色偏差。 3.如第1項所述之液晶顯示器,其中該校正灰階值產生器 輸出一背光控制訊號至一背光控制模組控制該影像區塊 相對應之背光模組區塊,調暗該影像區塊之背光,以達 成減少該影像區塊之色偏差之效果。 4·如第2項所述之液晶顯示器,其中該校正灰階值產生器 輪出一背光控制訊號至一背光控制模組控制該影像區塊 14 200949814 相對應之背光模組區塊,調 成湳ψ^ a 5亥影像區塊之背光,以達 成減J该影像區塊之色偏差之效果。 5·如第3項所述之液晶顧千哭 調钵孫iπ 其中該影像區塊之背光之 調整係為調整者光開啟時間的長短。 液晶顯示器’ #中該影像區塊之背光之 調整係為凋整背光亮度之大小。 H4 Γ所述之液晶顯示器,#中該影像區塊之背光之 調整係為調整背光開啟時間的長短。 8. 如第4項所述之液晶顯示器,其中該影 調整係為調整背光亮度之大小。 穿九之 9. 如第2項所述之液晶顯示器,其中當該影像區塊為該低 色偏差區域,則不將該影像區塊之一低灰階影像資料調 整為一高灰階影像資料。 10. 如第5項所述之液晶顯示器,其中當該影像區塊為該低 色偏差區域,則不將該影像區塊之一低灰階影像資料調 整為一高灰階影像資料。 11. 如第6項所述之液晶顯示器’其中當該影像區塊為該低 色偏差區域’則不將該影像區塊之一低灰階影像資料調 整為一高灰階影像資料。_ ο χ 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像The grayscale image data is adjusted to a grayscale image data to reduce the color deviation of the image block. The liquid crystal display of claim 1, wherein the corrected grayscale value generator comprises: an image block dividing unit, which divides the image data into a plurality of image blocks, and performs image analysis on the plurality of image blocks The image block is determined to be one of a high color deviation region and a low color deviation region; an sf calculation unit, the calculation unit provides a benefit value according to the judgment result of the image block segmentation unit; and a multiplication unit And multiplying the image data grayscale value of the image block by the gain value to output 'to reduce the color deviation of the image block. 3. The liquid crystal display of claim 1, wherein the corrected gray scale value generator outputs a backlight control signal to a backlight control module to control a backlight module block corresponding to the image block, and dims the image area. The backlight of the block is used to achieve the effect of reducing the color deviation of the image block. 4. The liquid crystal display according to item 2, wherein the corrected gray scale value generator rotates a backlight control signal to a backlight control module to control the backlight module block corresponding to the image block 14 200949814, and adjusts湳ψ^ a 5 hai image block backlight, in order to achieve the effect of reducing the color deviation of the image block. 5. The liquid crystal is as described in item 3, and the adjustment of the backlight of the image block is the length of the adjuster light on time. The backlight of the image display unit is adjusted to the brightness of the backlight. In the liquid crystal display described in H4, the backlight of the image block is adjusted to adjust the backlight opening time. 8. The liquid crystal display according to item 4, wherein the shadow adjustment is to adjust the brightness of the backlight. 9. The liquid crystal display according to Item 2, wherein when the image block is the low color deviation region, the low grayscale image data of one of the image blocks is not adjusted to a high grayscale image data. . 10. The liquid crystal display according to Item 5, wherein when the image block is the low color deviation region, the low grayscale image data of one of the image blocks is not adjusted to a high grayscale image data. 11. The liquid crystal display device of claim 6, wherein the image block is the low color deviation region, the low grayscale image data of one of the image blocks is not adjusted to a high grayscale image data. 12. 如第7項所述之液晶顯示器,其中當該影像區塊為該低 色偏差區域’則不將該影像區塊之一低灰階影像資料調 整為一高灰階影像資料。 13. 如第8項所述之液晶顯示器,其中當該影像區塊為該低 色偏差區域,則不將該影像區塊之一低灰階影像資料調 整為一高灰階影像資料。 14.如第2項所述之液晶顯示器,其中該計算單元輸出之增 益值為1。 15.如第1〇項所述之液晶顯示器,其中該計算單元輸出之 增益值為1。 15 200949814 ❹ ❹ 16. 如第11項所述之液晶顯示器 增益值為1。 17. 士第12項所述之液晶顯示器 增益值為1。 18. 如第13項所述之液晶顯示器 增益值為1。 ° 19. 如第2項所述之液晶顯示器, 色偏差區域,則哕叶H _ '、中s該衫像區塊為該低 20如第丨二 輸出之增益值大於1。 20. 如第15項所述之液晶顯 低色偏差區域,靠計其巾當㈣像區壤為該 如篦M s 单几輪出之增益值大於1。 21. 如第16項所述之液晶顯子哭 低色偏差區域,二其中當該影像區塊為該 ”如笛乂 ? 早7°輪出之增益值大於1。 2 Z .如弟1 7項所述之液晶顯+獎 4器,其中當該影像區塊為哕 則該計算單元輸出之增益值大於^ 低。色偽:述之液晶顯示器,其中當該影像區塊為該 低色偏差區域,則該計算單元輸出之增益值大於i。 24, 一種液晶顯示器驅動方法,包含下列步驟: 將一影像資料分割成為複數個影像區塊; 針對該f數個影像區塊進行影像分析,以判斷該 影像區塊為高色偏差區域與低色偏差區域其中之— 及 其中該計算單元輪出 之 其中該計算單元輪出之 其中該計算單元輪出之 25. 當判斷該影像區塊為高色偏差區域,則將該影像區塊之 一低灰階影像資料調整為一高灰階影像資料,以減少該 影像區塊之色偏差。如第24項所述之液晶顯示器驅動= 法,更包含下列步驟:當該影像區塊為該低色偏差區域, 則不進行色偏差調整,不將該影像區塊之—低灰階影像 資料調整為一高灰階影像資料,直接將該影像區塊=馬 像資料輸出。 如 26. 如第24項所述之液晶顯示器驅動方法,更包含下列步 16 200949814 驟:當該影像區塊為該高色偏差區域時,輸出一背光控 制訊號至一背光控制模組,該背光控制模組則控制該影 像區塊相對應之背光模組區塊,調暗該影像區塊之背 光’以減少該影像區塊之色偏差。 27. 如第25項所述之液晶顯示器驅動方法’更包含下列步 驟··當該影像區塊為該高色偏差區域時,輸出一背光控 制訊號至一背光控制模組,該背光控制模組則控制該影 像區塊相對應之背光模組區塊,調暗該影像區塊之背 光,以減少該影像區塊之色偏差。 28. 如第26項所述之液晶顯示器驅動方法,更包含下列步 藝 驟:該影像區塊之背光之調整係為調整背光開啟時間的 長短。 29·如第27項所述之液晶顯示器驅動方法,更包含下列步 驟:該影像區塊之背光之調整係為調整背光開啟時間的 長短。 30. 如第26項所述之液晶顯示器’其中該影像區塊之背光 之調整係為調整背光亮度之大小。 31. 如第26項所述之液晶顯示器,其中該影像區塊之背光 之調整係為調整背光亮度之大小。12. The liquid crystal display of claim 7, wherein the low-gray image data of one of the image blocks is not adjusted to a high-gray image data when the image block is the low-color deviation area. 13. The liquid crystal display of claim 8, wherein when the image block is the low color deviation region, the low grayscale image data of one of the image blocks is not adjusted to a high grayscale image data. 14. The liquid crystal display of claim 2, wherein the calculation unit outputs a gain value of one. 15. The liquid crystal display of item 1, wherein the calculation unit outputs a gain value of one. 15 200949814 ❹ ❹ 16. The liquid crystal display gain value as described in item 11 is 1. 17. The liquid crystal display described in item 12 has a gain of 1. 18. The liquid crystal display gain value as described in item 13 is 1. ° 19. The liquid crystal display according to item 2, wherein the color deviation region is the H leaf H _ ', the middle s of the shirt image block is the low 20, and the second output has a gain value greater than 1. 20. The liquid crystal display with a low color deviation region as described in item 15 is determined by the fact that the (4) image area is such that the gain value of the 几M s is more than one. 21. The liquid crystal display of the liquid crystal display as described in item 16 is in the low color deviation region, and wherein the image block is the same as the “flying cymbal”. The gain value of the early 7° rotation is greater than 1. 2 Z. The liquid crystal display + award 4 device, wherein when the image block is 哕, the gain value of the output of the computing unit is greater than ^ low. Color flop: the liquid crystal display, wherein the image block is the low color deviation In the region, the gain value of the output of the computing unit is greater than i. 24, a liquid crystal display driving method, comprising the following steps: dividing an image data into a plurality of image blocks; performing image analysis on the f image blocks to Determining that the image block is a high color deviation region and a low color deviation region, and wherein the calculation unit is rotated out of the calculation unit, wherein the calculation unit is rotated 25. When the image block is determined to be high In the color deviation region, the low grayscale image data of one of the image blocks is adjusted to a high grayscale image data to reduce the color deviation of the image block. The liquid crystal display driving method according to item 24 is more Contains the following steps : When the image block is the low color deviation area, the color deviation adjustment is not performed, and the low gray scale image data of the image block is not adjusted to a high gray scale image data, and the image block is directly replaced by the image block. For example, the liquid crystal display driving method according to the item 24 includes the following step 16: 200949814. When the image block is in the high color deviation region, a backlight control signal is outputted to a backlight control mode. The backlight control module controls the backlight module block corresponding to the image block, and dims the backlight of the image block to reduce the color deviation of the image block. 27. As described in item 25. The liquid crystal display driving method further includes the following steps: when the image block is the high color deviation region, outputting a backlight control signal to a backlight control module, and the backlight control module controls the image block corresponding to the image block The backlight module block dims the backlight of the image block to reduce the color deviation of the image block. 28. The liquid crystal display driving method of item 26 further includes the following steps: the image The backlight adjustment of the block is to adjust the backlight opening time. The liquid crystal display driving method according to Item 27, further comprising the following steps: adjusting the backlight of the image block to adjust the backlight opening time 30. The liquid crystal display of claim 26, wherein the backlight of the image block is adjusted to adjust the brightness of the backlight. The liquid crystal display of claim 26, wherein the image block is backlit The adjustment is to adjust the brightness of the backlight. 1717
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CN106652950A (en) * 2016-12-27 2017-05-10 惠科股份有限公司 Display visual angle chromatic aberration compensation method and device and liquid crystal display
WO2018121305A1 (en) * 2016-12-27 2018-07-05 惠科股份有限公司 Liquid crystal display device

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KR101058125B1 (en) * 2004-02-23 2011-08-24 삼성전자주식회사 Image display method and display device, drive device and method thereof

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Publication number Priority date Publication date Assignee Title
CN106652950A (en) * 2016-12-27 2017-05-10 惠科股份有限公司 Display visual angle chromatic aberration compensation method and device and liquid crystal display
CN106652950B (en) * 2016-12-27 2017-12-22 惠科股份有限公司 Display visual angle chromatic aberration compensation method and device and liquid crystal display
WO2018121305A1 (en) * 2016-12-27 2018-07-05 惠科股份有限公司 Liquid crystal display device

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