201015530 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種顯示裝置及影像調整方法。 【先前技術】 一般而言，人眼所看到液晶顯示裝置的顯示晝面，通 _ 常係由複數畫素單元所組成，而其中各畫素單元係可為紅 色、綠色或藍色畫素單元。此外，液晶顯示裝置之晝素單 © 元係具有相對應之複數液晶分子，又，液晶分子係依據不 同的驅動電壓而旋轉或傾斜，使得光線通過各晝素單元的 穿透率不同，進而產生不同灰階。 當使用者於不同視角觀看液晶顯示裝置時，會察覺到 色偏（color shift)問題，使用者以正視、側視之不同視角 觀察一晝素單元時，會感覺侧視之亮度不同於正視之亮 度，此一現象在液晶顯示裝置顯示中間灰階時更為明顯。 而多區域垂直配向（M VA )為改善此一問題，所使用的方 ® 法之一為使每一晝素單元呈現亮區及暗區兩個區域，即使 用一顯示低灰階之暗區配合一顯示高灰階之亮區達到使 畫素單元整體顯示一中間灰階之效果。由於色偏在畫素單 . 元顯示非中間灰階時較為不明顯，且在晝素單元顯示一高 一低灰階之亮暗區所產生之色偏現象也會比直接顯示一 tr 中間灰階來得輕微。 如圖1所示，多區域垂直配向的其中一種作法係在基 板11上形成或設置凸條12,以使得其中的液晶分子13具 5 201015530 有一預傾方向，也就是說其中的液晶分子13不會以同一 方向來排列或旋轉。 請再參照圖2所示，其係為圖1的俯視角度示意圖。 圖2係以四區域的垂直配向為例說明，其係將液晶分子13 藉由凸條12而有不同預傾方向區分為四個液晶領域 (domain )。另外，一個畫素單元1可具有施加不同電壓 的兩個或兩個以上之子電極（未繪示），使畫素單元1可 顯示一亮區影像及一暗區影像。 © 根據上述態樣，在此結構下所呈現的灰階值與穿透率 的關係曲線則如圖3所示。圖3係顯示根據上述態樣所得 到的一正視伽瑪曲線C11以及一側視伽瑪曲線C12。其中 侧視伽瑪曲線C12係由亮區灰階及暗區灰階組成原始影像 灰階的曲線。 然而，根據不同的應用場合所需要的側視效果不盡相 同，某些場合需要側視與正視有相同的效果，而某些場合 可能必須降低側視的效果。因此，如何提供一種在正視伽 ® 瑪曲線不變的前提下，而能夠在一定程度的範圍中調整側 視伽瑪曲線之顯示裝置及影像調整方法，實屬當前重要課 題之一。 < 【發明内容;]_ 有鑑於上述課題，本發明之目的為提供一種在正視伽 瑪曲線不變的前提下，而能夠調整側視伽瑪曲線之顯示裝 置及影像調整方法。 201015530 為達上述目的，本發明提供一種顯示裝置，其係包含 至少一資料線、至少一掃描線以及至少一畫素單元。掃描 線與資料線約呈垂直，且不相接觸。晝素單元設置於資料 線與掃描線之一交錯區域，並具有一第一顯示區及一第二 顯示區。且藉由分別控制第一顯示區及第二顯示區之一顯 示影像灰階值，俾使晝素單元具有一正視伽瑪曲線、一第 一侧視伽瑪曲線封包及一第二側視伽瑪曲線封包。 為達上述目的，本發明提供一種影像調整方法，其係 ❹ 應用於一顯示裝置。顯示裝置具有至少一資料線、至少一 掃描線及至少一晝素單元。晝素單元具有一第一顯示區及 一第二顯示區，晝素單元具有一正視伽瑪曲線、一第一侧 視伽瑪曲線封包及一第二側視伽瑪曲線封包。影像調整方 法包含下列步驟：選定一第一灰階區域；切換晝素單元操 作於第一側視伽瑪曲線封包或操作於第二側視伽瑪曲線 封包；以及於第一側視伽瑪曲線封包或於第二側視伽瑪曲 線封包中調整一第一伽瑪曲線對應於第一灰階區域之範 ® 圍内的曲線，以產生一第二伽瑪曲線。 承上所述，因依據本發明之顯示装置及影像調整方 法，係藉由分別控制第一顯示區及第二顯示區之一顯示影 - 像灰階值，使得晝素單元具有一正視伽瑪曲線、一第一侧 ^ 視伽瑪曲線封包及一第二側視伽瑪曲線封包。本發明之顯 示裝置在正視伽瑪曲線不變的前提下，而能夠在一定程度 的範圍中調整複數側視伽瑪曲線，以調整顯示裝置之側視 效果之顯示影像。 7 201015530 【實施方式】 =將參助關圖式，說明依據本發明較佳實 顯不裝置及影像調整方法。201015530 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a display device and an image adjustment method. [Prior Art] In general, the display surface of a liquid crystal display device as seen by the human eye is composed of a plurality of pixel units, and each pixel unit can be a red, green or blue pixel. unit. In addition, the liquid crystal display device has a corresponding plurality of liquid crystal molecules, and the liquid crystal molecules are rotated or tilted according to different driving voltages, so that the transmittance of light through the respective pixel units is different, thereby generating Different gray levels. When the user views the liquid crystal display device from different viewing angles, the color shift problem is perceived. When the user observes the pixel unit from different perspectives of the front view and the side view, the brightness of the side view is different from that of the front view. Brightness, this phenomenon is more noticeable when the liquid crystal display device displays the intermediate gray scale. Multi-zone vertical alignment (M VA ) is one of the methods used to improve this problem. One of the methods used is to make each pixel unit appear in both bright and dark areas, that is, to use a dark area that displays low gray levels. In conjunction with a bright area displaying a high gray level, the effect of displaying an intermediate gray level on the pixel unit as a whole is achieved. Because the color deviation is in the pixel single. The element is not obvious when the non-intermediate gray scale is displayed, and the color shift phenomenon generated by the bright and dark areas of the high and low gray scales in the pixel unit is better than the direct display of a tr gray scale. Comes slightly. As shown in FIG. 1, one of the multi-region vertical alignment methods forms or sets the ribs 12 on the substrate 11 such that the liquid crystal molecules 13 therein have a pretilt direction, that is, the liquid crystal molecules 13 therein are not Will be arranged or rotated in the same direction. Please refer to FIG. 2 again, which is a schematic plan view of FIG. 1 . FIG. 2 is an example in which the vertical alignment of the four regions is exemplified, and the liquid crystal molecules 13 are divided into four liquid crystal domains by different pretilt directions by the ridges 12. In addition, one pixel unit 1 may have two or more sub-electrodes (not shown) to which different voltages are applied, so that the pixel unit 1 can display a bright area image and a dark area image. © According to the above aspect, the relationship between the gray scale value and the transmittance shown in this structure is shown in Fig. 3. Fig. 3 is a view showing a front view gamma curve C11 and a side view gamma curve C12 obtained according to the above aspect. The side view gamma curve C12 is a curve of the original image gray scale composed of the bright area gray scale and the dark area gray scale. However, depending on the application, the side view effects are not the same. In some cases, side view and face view are required to have the same effect, and in some cases, the side view effect may have to be reduced. Therefore, it is one of the current important topics to provide a display device and an image adjustment method capable of adjusting the side gamma curve to a certain extent under the premise that the front view gamma curve is constant. <Explanation of the Invention> In view of the above problems, an object of the present invention is to provide a display device and an image adjustment method capable of adjusting a side view gamma curve without changing the front view gamma curve. In order to achieve the above object, the present invention provides a display device comprising at least one data line, at least one scan line, and at least one pixel unit. The scan line is approximately perpendicular to the data line and is not in contact. The pixel unit is disposed in an interlaced area between the data line and the scan line, and has a first display area and a second display area. And displaying the image grayscale value by controlling one of the first display area and the second display area, respectively, so that the pixel unit has a front view gamma curve, a first side view gamma curve package, and a second side view gamma Ma curve packet. In order to achieve the above object, the present invention provides an image adjustment method which is applied to a display device. The display device has at least one data line, at least one scan line, and at least one pixel unit. The pixel unit has a first display area and a second display area, and the pixel unit has a front view gamma curve, a first side view gamma curve package and a second side view gamma curve package. The image adjustment method comprises the steps of: selecting a first grayscale region; switching the pixel unit to operate on the first side gamma curve packet or operating on the second side gamma curve packet; and the first side view gamma curve The packet or a first gamma curve in the second side gamma curve packet is adjusted to correspond to a curve within a range of the first gray level region to generate a second gamma curve. As described above, according to the display device and the image adjustment method of the present invention, the pixel-image grayscale value is displayed by controlling one of the first display area and the second display area, respectively, so that the pixel unit has a front view gamma The curve, a first side, a gamma curve packet, and a second side gamma curve packet. The display device of the present invention can adjust the complex side view gamma curve to adjust the display image of the side view effect of the display device under the premise that the gamma curve is constant. 7 201015530 [Embodiment] = Reference mode will be described, and a preferred device and image adjustment method according to the present invention will be described.
凊參照圖4所示，本發明較佳實施例之顯 包含至少-資料線、至少一掃描線以及至少一書辛單元： 於本實施财，顯示裝置2係、以包含複數資料線Dll〜 Dlm、複數掃描線s]l〜&以及複數畫元2 明。其中，爪與11為大於i之正整數。 巧 掃描線Su〜Sln與資料線〜D】m係為交錯設置，並 係形成複數交錯區域’而各晝素單元21係設置於相對應 之交錯區域。於實作上，掃描線SU〜Sln與資料線Dli^Referring to FIG. 4, a preferred embodiment of the present invention includes at least a data line, at least one scan line, and at least one book octet unit. In the present embodiment, the display device 2 is configured to include a plurality of data lines D11 to Dlm. , the complex scan lines s] l ~ & and the complex picture 2 clear. Wherein, the claw and 11 are positive integers greater than i. The scanning lines Su to Sln and the data lines D to D are interlaced, and a plurality of interleaved regions are formed, and each of the pixel units 21 is disposed in a corresponding interlaced region. In practice, the scan lines SU~Sln and the data line Dli^
Dim沒有實質上的接觸’且掃描線Ά與資料線Du 〜Dlm約呈垂直。 …請參照圖5所示，畫素單元21可分別為一紅色畫素 單兀、一綠色畫素單元或一藍色畫素單元。畫素單元21 具有一第一顯示區211及一第二顯示區212，並分別藉由 控制其一顯示影像灰階值，而使第一顯示區211及第二顯 不區212係分別對應顯示一亮區影像及一暗區影像。於本 實施例中，顯示裝置2具有複數液晶分子213，其中，部 分之液晶分子213a係位於與第一顯示區211相對應之位 置，部分之液晶分子213b係位於與第二顯示區212相對 應之位置。 在本實施例中，與第一顯示區211相對應之液晶分子 213a具有一第一倒向’而與第二顯示區212相對應之液晶 8 201015530 分子213b具有一第二倒向。由於液晶分子213a和液晶分 子213b的倒向不同，因此，晝素單元21可能出現在正視 亮度相同，但側視亮度不同的情形，再經由調整第一顯示 區211和第二顯示區212的灰階，即可能在畫素單元21 整體正視亮度不變的情形下，調整畫素單元21在某個側 視角度下的亮度。 、 在本實施例中，第一倒向係指與資料線Dn〜Dlm之延 伸方向約呈垂直的方向，而第二倒向係指與掃描線Sn〜 ❹ Sln之延伸方向約呈垂直的方向。 此外，晝素單元21具有一第一顯示模式以及一第二 顯示模式。當畫素單元21操作於第一顯示模式時，第一 顯示區211顯示一暗區影像，而第二顯示區212顯示一亮 區影像。當畫素單元21操作於第二顯示模式時，第一顯 示區211顯示亮區影像，而第二顯示區212顯示暗區影像。 以下，將說明畫素單元21操作於第一模式時，其灰 階值與穿透率的關係曲線，在此係以紅色晝素單元為例說 〇 明。請參照圖6所示，當晝素單元21操作於第一模式時， 晝素單元21具有一正視伽瑪曲線C21以及一第一侧視伽 瑪曲線封包C22。於此，第一侧視伽瑪曲線封包C22具有 - 一第一側視伽瑪曲線上限C22a以及一第一側視伽瑪曲線 — 下限C22b。於實施上，當第一側視伽瑪曲線上限C22a以 及第一側視伽瑪曲線下限C22b的間距越大，則表示於側 視角度時，顯示裝置2之侧視伽瑪曲線可調整的範圍較大。 以下，將詳細說明第一側視伽瑪曲線上限C22a以及 9 201015530 二制：j伽瑪曲線下限C22b。晝素單元21係可藉由分別 異時間顯示古F ^1以及第二顯示區212於相同時間或相 7 〜座影像或顯示暗區影像，而使畫素單元21 顯不任一灰階。队 區影像的袁收*外，該灰階係可藉由調整亮區影像或暗 、 蓉纟日入暗度，而產生複數種組合以形成該灰階。於該 寻，、且公"中，传θ · 值，將各灰階”(、〇 ^最大之穿透率值以及一最小穿透率 依序f怜Φ办、仏〜255階）及其對應之最大穿透率值 O r ^ I ί 乂 ’以形成第一侧視伽瑪曲線上限C22a，將各 ❹對應之最切透率值依序 ^ 側視伽瑪曲線下限 仿 第 v 、 C22b。其中，第一側視伽瑪曲線上限 則視伽碼曲線下限C 2 2 b所包圍的範圍即稱為 第-側視伽瑪曲線封包⑶。 為 相較於習知技術，由圖6可以明顯看出，本 第=^巧轉上限咖収第—舰㈣曲線下限 因此，於侧視 ❹影像調整範圍。顯不裝置2於南灰階區域具有較大的Dim has no substantial contact' and the scan line is approximately perpendicular to the data lines Du to Dlm. ... Referring to FIG. 5, the pixel unit 21 may be a red pixel unit, a green pixel unit, or a blue pixel unit, respectively. The pixel unit 21 has a first display area 211 and a second display area 212, and respectively controls the first display area 211 and the second display area 212 to display corresponding image gray scale values. A bright area image and a dark area image. In the present embodiment, the display device 2 has a plurality of liquid crystal molecules 213, wherein a portion of the liquid crystal molecules 213a are located at positions corresponding to the first display region 211, and a portion of the liquid crystal molecules 213b are located corresponding to the second display region 212. The location. In the present embodiment, the liquid crystal molecules 213a corresponding to the first display region 211 have a first reverse direction and the liquid crystal 8 201015530 molecules 213b corresponding to the second display region 212 have a second reverse direction. Since the liquid crystal molecules 213a and the liquid crystal molecules 213b are different in reverse direction, the halogen element 21 may appear in the case where the front view brightness is the same, but the side view brightness is different, and the gray of the first display area 211 and the second display area 212 is adjusted. The order, that is, the brightness of the pixel unit 21 at a certain side view angle may be adjusted in the case where the overall front view brightness of the pixel unit 21 is constant. In the present embodiment, the first backward direction refers to a direction perpendicular to the extending direction of the data lines Dn to Dlm, and the second backward direction refers to a direction perpendicular to the extending direction of the scanning lines Sn to ❹ Sln. . Further, the pixel unit 21 has a first display mode and a second display mode. When the pixel unit 21 operates in the first display mode, the first display area 211 displays a dark area image, and the second display area 212 displays a bright area image. When the pixel unit 21 operates in the second display mode, the first display area 211 displays a bright area image, and the second display area 212 displays a dark area image. Hereinafter, the relationship between the gray scale value and the transmittance of the pixel unit 21 when operating in the first mode will be described. Here, the red pixel unit is taken as an example. Referring to FIG. 6, when the pixel unit 21 is operated in the first mode, the pixel unit 21 has a front view gamma curve C21 and a first side view gamma curve packet C22. Here, the first side view gamma curve packet C22 has a first side view gamma curve upper limit C22a and a first side view gamma curve - a lower limit C22b. In implementation, when the first side view gamma curve upper limit C22a and the first side view gamma curve lower limit C22b are larger, the side view gamma curve adjustable range of the display device 2 is indicated when the side view angle is used. Larger. Hereinafter, the first side view gamma curve upper limit C22a and 9 201015530 two systems will be described in detail: the j gamma curve lower limit C22b. The pixel unit 21 can cause the pixel unit 21 to display any gray scale by displaying the ancient F ^1 and the second display area 212 at different times or at the same time or phase image or displaying a dark area image. In addition to the Yuan Feng* image of the team area, the gray scale system can generate a plurality of combinations to form the gray scale by adjusting the bright area image or the darkness and the darkness of the day. In the search, and the public ", the value of θ ·, the gray level" (, 最大 ^ maximum penetration rate value and a minimum penetration rate in order to p Φ 仏, 仏 ~ 255 steps) and The corresponding maximum transmittance value O r ^ I ί 乂 ' is formed to form a first side gamma curve upper limit C22a, and the highest cut-through value corresponding to each 依 is sequentially corrected by the side gamma curve lower limit v, C22b, wherein the upper limit of the first side view gamma curve is the range surrounded by the lower limit of the gamma curve C 2 2 b, which is called the first side gamma curve packet (3). Compared with the prior art, FIG. 6 It can be clearly seen that the first == ^ 巧 上限 咖 咖 咖 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 舰 四 四 四 四 四 四 四 四 四 四 四 四 四
L將再說明晝素單元21操作於第二模式時，I =值與穿透率㈣係曲線。請料參 W …素単元2!操作於第二模式 ^ 丁田1 dfc娩1旦素早70 21具有正視伽瑪 Λ 第二側視伽碼曲線封包C23。於此，第-侧 視Γ:線封包⑶具有-第二侧視伽瑪曲線上：c—2: 視伽瑪曲線上限C23a以《铪_ ,， 田乐一側 第一側視伽瑪曲線下限C23b的 201015530 間距越大，則表示於 曲線可調整的範51 視角度時’顯示裝置2之側視伽瑪 以下，將詳細說笛_ 第二侧視伽瑪曲線τ第—〇伽碼曲線上限C23a以及 控制第-顯示區21! ^⑶卜畫_素單元21係、可藉由分別 異時間顯示亮區影像::第：二不區212於相同時間或相 顯示任一灰階。此外2 ·’、、不θ品衫像，而使畫素單元21 ❹ ❹ 區影像的亮暗度、產調整亮區影像或暗 等組合中，係具有〜/減種料以形成該灰階。於該 值，將各灰階（G ρ*〜9^之/、透率值以及—最小穿透率 依序描繪出來，以形：5 :)及其對應之最大穿透率值 灰階及其對應之最小穿：:：瑪曲線上限C23a’將各 側視伽瑪曲線下限序描繪出來，以形成第二 ⑶a及第二侧視伽碼:線下其限 第二侧視伽瑪曲線封包⑶所包圍的乾圍即稱為 相較於習知技術，由圖7可以明顯看出， 伽瑪曲線上限C23a以及第二側視伽碼曲線下= C23b於一低灰階區域時且 限 角度時，*實施例之續干；此’於侧視 影像調整範^。 裝置2於低灰階區域具有較大的 另外’於本實施例中’相鄰之各畫素單元2 r並::=一可如…一所示:: 請參照圖9所示，本發明較佳實施例之顯示裝置2更 11 201015530 包含一顯示模式切換模組3。於本實施例中，顯示裝置2 係可為一垂直配向型液晶顯示裝置或一多區域垂直配向 型液晶裝置。 顯示模式切換模組3係與晝素單元21電性連接，顯 示模式切換模組3具有一第一儲存單元31以及一第二儲 存單元32,其中第一儲存單元31係儲存畫素單元21之第 • 一顯示模式的參數，第二儲存單元32係儲存晝素單元21 之第二顯示模式的參數。 ❹ 當顯示模式切換模組3接收一控制訊號C!時，顯示模 式切換模組3係依據控制訊號q讀取第一儲存單元31或 第二儲存單元32的參數，以輸出一切換訊號C2切換畫素 單元21為第一顯示模式或第二顯示模式。 當使用者欲調整顯示裝置2之顯示畫面所顯示的低灰 階區域時，則可藉由顯示模式切換模組3將晝素單元21 切換至第二顯示模式。當使用者欲調整顯示裝置2之顯示 畫面所顯示的高灰階區域時，則可藉由顯示模式切換模組 ® 3將晝素單元21切換至第一顯示模式。 請參照圖10所示，本發明較佳實施例之影像調整方 法係可應用於如圖9所示之顯示裝置2。本實施例之影像 . 調整方法係包含步驟W11至步驟W14。 步驟W11係統計顯示裝置2之一影像資料的灰階數量 分佈圖。步驟W12係為選定一第一灰階區域。步驟W13 係為切換畫素單元21操作於第一側視伽瑪曲線封包C22 或操作於第二側視伽瑪曲線封包C23。步驟W14係於第一 12 201015530 側視伽瑪曲線封IC 22或於第二側視伽 調整-第一伽碼曲線對:見:馬曲線封包C2” 線，以產生-第二伽瑪曲;第U區域之範圍内的曲 線不變:前提下角:在顯不裝置2之正視伽瑪曲 調整範圍。藉此，_干裝^之舰線具有較大的 需求而將料調魏據實際 像品質，其中較差的影像品質係可:質少t整為較差的影 法的實際操作。實施例說明本實施例之影像調整方 第一實施例 示裝置之顯示晝面被偷窺 ❹ =tr整側視伽瑪曲線之曲線斜率，以降低顯」 广；子之對比度’進而減少顯示晝面上的影像資料 被偷窺的機率。請參照圖n所示，其係為顯示裝置2= 如像:貝料的灰1¾數量分佈圖。於本實施财，係以選定影 像:貝料之灰I1白數里較集中的區域為第一灰階區域A說明。 承上所述’由於第一灰階區域A位於中低灰階範圍， 因此U單7L 21切換至第二顯示模式’而使畫素單 元21可於第二側視〜碼曲線封包⑶中調整其侧視伽瑪 曲線。凊再參照圖12A所示，本實施例之顯示裝置2依據 -第-側視伽瑪曲線C31進行顯示，且第一側視伽瑪曲線 C31位於第一側視伽瑪曲線上限C23a以及第二侧視伽瑪 曲線下限C23b之間。 13 201015530 以降低影像品質為例，如圖12B所示，於第一灰階區 域A中，係調整第一側視伽瑪曲線C31之曲線斜率，而產 生一第二側視伽瑪曲線C32。其中，第二側視伽瑪曲線C32 於第一灰階區域A中之曲線斜率係小於第一側視伽瑪曲線 C31於第一灰階區域A中之曲線斜率，而最理想的狀態係 為第二側視伽瑪曲線C32之曲線斜率趨近於零。藉此，可 降低顯示裝置2於側視角之對比度，而使影像品質降低， 以減少影像資料被偷窺的機率。同時，熟習此一技術者， 〇 更可在顯示裝置2之顯示晝面加上干擾字體或警告標語， 以干擾或警示欲偷窺資料者。 第二實施例 為預防顯示裝置之顯示晝面被偷窺，除了上述實施例 的方式之外，第二實施例亦可將顯示晝面區分為複數區 域，並隨著時間改變而調整各區域之側視伽瑪曲線，而使 顯示晝面形成馬賽克的效果。 於第二實施例中，其所述之第一側視伽瑪曲線C31係 ❹ 可為顯示裝置2之顯示畫面之灰階值與穿透率的關係曲 線，或可為部分之顯示畫面之灰階值與穿透率的關係曲 線。 請參照圖13A所示，於空間上，係可將顯示晝面區分 為複數區域，其中各區域之面積係可相互重疊。於本實施 例中，係以將顯示晝面區分為16個區域為例說明，其中， 各區域具有至少一晝素單元，並依據一相對應之側視伽瑪 曲線進行顯示。例如，區域B依據第一侧視伽瑪曲線C31 14 201015530 進行顯示。換言之，各區域係分別依據一個側視伽瑪曲線 進行顯示，而該等側視伽瑪曲線係可為相同或不同。 然而，於本實施例中，並非限定各區域於每一時間皆 需依據固定之側視伽瑪曲線進行顯示。如圖13A所示，於 一第一時間，區域B依據第一側視伽瑪曲線C31進行顯 示。於一第二時間，各區域之相對應的側視伽瑪曲線係可 如圖13B所示，其中區域B依據第二侧視伽瑪曲線C32 進行顯示。在此要說明的是，在圖13A與圖13B中之各區 〇 域中的數字係代表不同側視伽瑪曲線的編號。 以上，是將顯示晝面區分為複數區域，以分別進行控 制，以下是針對各晝素單元之第一顯示區及第二顯示區進 行控制。以下，將以任一畫素單元之第一顯示區及第二顯 示區的控制方法進行說明。於一第一時間，第一顯示區依 據一第一側視伽瑪曲線C31進行顯示，第二顯示區依據一 第二側視伽瑪曲線C32進行顯示。於一第二時間，第一顯 示區依據一第三侧視伽瑪曲線進行顯示，第二顯示區根據 ❹一第四侧視伽瑪曲線進行顯示。於本實施例中，第一側視 伽瑪曲線係可與第四側視伽瑪曲線相同，第二側視伽瑪曲 線係可與第三側視伽瑪曲線相同。 _ 當然，亦可將上述以區域分別控制的概念及以顯示區 分別控制的概念加以混合而進行控制，以達到更多元的控 制組合效果。 第三實施例 於一灰階區域中，當側視伽瑪曲線之曲線斜率可調整 15 201015530 的範圍有限時’則可經由映射（mapping)技術並配合動 態背光的驅動技術，將該灰階區域轉換至另一灰階區域， 以提高側視伽瑪曲線可調整的範圍。請參照圖14所示， 其係為顯示裝置2之另一影像資料之灰階數量分佈圖，其 灰階數量集中於第二灰階區域C。 請再同時參照圖15、圖16A以及圖ι6Β所示，第— 側視伽瑪曲線C 31在第二灰階區域C的側视伽瑪曲線上下 限之間隔較小，因此，畫素單元於第二灰階區域c區進行 © 顯示時，其可調整的侧視亮度範圍也較小。因此，於本實 施例中，係將第二灰階區域c之第一側視伽瑪曲線C3l映 射至一第一灰階區域A之一第三側視伽瑪曲線c33。此 時，第三側視伽瑪曲線C33在第一灰階區域A區的上下限 之間隔較大，使得可調整的侧視亮度範圍也較大。如^ 16B ’於第一灰階區域a中，第三侧視伽瑪曲線cm係可 於相同正視伽瑪錢C21 *變之下，將料率調整為趨近 ❹於零。藉此，可降低顯示裝置於側視角之對比度，而使影 像品質降低，以減少影像資料被偷窺的機率。 同時，依據由第二灰階區域C映射至第一灰階區域a 之比值調整顯示裝置之一背光亮度。當第二灰階區域C之 ^階5大於第—灰階區域A之灰階值’則降低顯示裝置之 i光：吏i體影像顯示亮度不因影示灰階改變而受影 當第二灰階區域C之灰階值小於第一灰階區 域I灰階值，則提高顯示裝置之背光亮度。 斤述依據本發明之顯示裝置及影像調整方法， 16 201015530 其係藉由晝素單元之第一顯示區具有與資料線之延伸方 向約呈垂直的第一倒向，第二顯示區具有與掃描線之延伸 方向約呈垂直的第二倒向，使一畫素單元具有兩個側視伽 瑪曲線特性的顯示區。本發明之顯示裝置在正視伽瑪曲線 不變的前提下，而能夠在一定程度的範圍中調整複數側視 ' 伽瑪曲線，以調整顯示裝置之側視效果之顯示影像。因 ' 此，除了利於降低對比度，以預防顯示裝置之顯示晝面被 偷窺之外，更可以提高對比度，以增加顯示裝置的可視角 ❹度。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為顯示習知顯示裝置的示意圖； 圖2為顯示圖1之一俯視角度的示意圖； ® 圖3為顯示習知顯示裝置之灰階值與穿透率的關係曲 線圖； 圖4為顯示本發明較佳實施例之顯示裝置的示意圖； . 圖5為顯示本發明較佳實施例之顯示裝置之晝素單元 的不意圖， 圖6為顯示本發明較佳實施例之顯示裝置之晝素單元 之灰階值與穿透率的關係曲線圖； 圖7為顯示本發明較佳實施例之顯示裝置之晝素單元 17 201015530 之灰階值與穿透率的另一關係曲線圖； 圖8A及圖8B為顯示本發明較佳實施例之顯示裝置之 相鄰晝素單元中液晶分子的排列組合圖； 圖9為顯示本發明較佳實施例之顯示裝置的示意圖； 圖10為顯示本發明較佳實施例之影像調整方法的流 程圖； ' 圖11為顯示本發明較佳實施例之顯示裝置之影像資 料的灰階數量分佈圖； © 圖12A及圖12B為顯示本發明較佳實施例之顯示裝置 之一侧視伽瑪曲線的示意圖； 圖13A及圖13B為顯示本發明較佳實施例之顯示裝置 於空間上之一側視伽瑪曲線的示意圖； 圖14及圖15為顯示本發明較佳實施例之顯示裝置之 影像資料的另一灰階數量分佈圖；以及 圖16A及圖16B為顯示本發明較佳實施例之顯示裝置 之一側視伽瑪曲線的示意圖。 ❹ 【主要元件符號說明】 1、21 :畫素單元 . 1 i :基板 12 :凸條 13、213、213a、213b :液晶分子 2 :顯示裝置 211 :第一顯示區 201015530 212 :第二顯示區 3:顯示模式切換模組 31 :第一儲存單元 32 :第二儲存單元 A :第一灰階區域 B :區域 C:第二灰階區域 C!:控制訊號 © C2 :切換訊號L will further illustrate the I = value and the transmittance (four) system curve when the halogen unit 21 is operated in the second mode. Please refer to W ... Suyuan 2! Operation in the second mode ^ Ding Tian 1 dfc delivery 1 denim early 70 21 with a front view gamma Λ second side view gamma curve packet C23. Here, the first side view: the line package (3) has a second side view gamma curve: c-2: the upper limit of the gamma curve C23a is "铪_,, the first side view gamma curve of the Tianle side The higher the distance of 201015530 of the lower limit C23b is, the more the side angle gamma of the display device 2 is below the curve 51, which will be described in detail. The second side view gamma curve τ first-〇 gamma code curve The upper limit C23a and the control first display area 21! ^(3) The picture display unit 21 can display the bright area image by the different time:: the second: the second area 212 displays any gray level at the same time or phase. In addition, in the combination of 2·', θθ, and the combination of the brightness and darkness of the image of the pixel unit 21, the image of the adjusted bright area, or the dark, the material has ~/subtracting material to form the gray scale. . At this value, the gray scales (G ρ*~9^/, the permeability value, and the minimum penetration rate are sequentially drawn to form: 5:) and their corresponding maximum penetration value gray scales and The corresponding minimum wear:::ma curve upper limit C23a' draws the lower limit order of each side gamma curve to form the second (3)a and the second side view gamma: the second side view gamma curve packet (3) The surrounding circumference is called compared with the prior art, as can be clearly seen from Fig. 7, the upper limit of the gamma curve C23a and the second side view of the gamma curve = C23b in a low gray level area and the angle limit When the * embodiment continues; this 'in the side view image adjustment mode ^. The device 2 has a larger "in the present embodiment" adjacent to each pixel unit 2 r in the low gray level region and:: = can be as shown in Fig. 1: Please refer to Fig. 9, the present invention The display device 2 of the preferred embodiment 11 further includes a display mode switching module 3. In this embodiment, the display device 2 can be a vertical alignment type liquid crystal display device or a multi-region vertical alignment type liquid crystal device. The display mode switching module 3 is electrically connected to the pixel unit 21, and the display mode switching module 3 has a first storage unit 31 and a second storage unit 32, wherein the first storage unit 31 stores the pixel unit 21 In the first display mode parameter, the second storage unit 32 stores the parameters of the second display mode of the pixel unit 21. When the display mode switching module 3 receives a control signal C!, the display mode switching module 3 reads the parameters of the first storage unit 31 or the second storage unit 32 according to the control signal q to output a switching signal C2 switch. The pixel unit 21 is a first display mode or a second display mode. When the user wants to adjust the low gray level area displayed on the display screen of the display device 2, the display mode switching module 3 can switch the pixel unit 21 to the second display mode. When the user wants to adjust the high-gray area displayed on the display screen of the display device 2, the display unit switching mode can be switched to the first display mode by the display mode switching module ® 3. Referring to Figure 10, the image adjustment method of the preferred embodiment of the present invention can be applied to the display device 2 shown in Figure 9. The image of the embodiment. The adjustment method includes steps W11 to W14. Step W11 shows the gray scale number distribution map of the image data of the display device 2. Step W12 is to select a first grayscale region. Step W13 is for the switching pixel unit 21 to operate on the first side gamma curve packet C22 or the second side gamma curve packet C23. Step W14 is performed on the first 12 201015530 side view gamma curve seal IC 22 or on the second side view gamma adjustment - first gamma curve pair: see: horse curve packet C2" line to generate - second gamma curve; The curve in the range of the U-zone is unchanged: the premise angle: the range of the gamma-curve adjustment of the device 2 is displayed. By this, the ship line of _ dry-packing has a large demand and will be adjusted according to the actual image. Quality, wherein the poor image quality can be: the actual operation of the lesser t is a poor shading method. The embodiment shows that the display of the first embodiment of the image adjuster of the embodiment is sneaked ❹ The slope of the curve of the gamma curve is used to reduce the appearance of the contrast; and thus reduce the probability that the image data on the face is sneaked. Please refer to FIG. n, which is a display device 2= as shown in the figure: the ash number distribution of the bedding material. In this implementation, the selected image: the area where the white number of the ash I1 of the bedding material is concentrated is the first gray level area A. According to the above, since the first gray-scale area A is located in the middle-low gray scale range, the U-single 7L 21 is switched to the second display mode, and the pixel unit 21 can be adjusted in the second-side view-code curve packet (3). Its side view gamma curve. Referring again to FIG. 12A, the display device 2 of the present embodiment is displayed according to the -th-side view gamma curve C31, and the first side view gamma curve C31 is located at the first side view gamma curve upper limit C23a and the second. Side view gamma curve lower limit between C23b. 13 201015530 Taking the image quality as an example, as shown in FIG. 12B, in the first gray-scale area A, the slope of the curve of the first side view gamma curve C31 is adjusted, and a second side view gamma curve C32 is generated. The slope of the curve of the second side view gamma curve C32 in the first gray level area A is smaller than the slope of the curve of the first side view gamma curve C31 in the first gray level area A, and the most ideal state is The slope of the curve of the second side view gamma curve C32 approaches zero. Thereby, the contrast of the display device 2 at the side viewing angle can be reduced, and the image quality can be reduced to reduce the probability of the image material being sneaked. At the same time, those skilled in the art can add an interference font or warning slogan to the display of the display device 2 to interfere or alert the person who wants to peek. In the second embodiment, in order to prevent the display surface of the display device from being peeked, in addition to the manner of the above embodiment, the second embodiment may also divide the display surface into a plurality of areas, and adjust the side of each area as time changes. Depending on the gamma curve, the effect of forming a mosaic on the face is formed. In the second embodiment, the first side view gamma curve C31 system ❹ may be a relationship between the gray scale value and the transmittance of the display screen of the display device 2, or may be a partial gray of the display screen. The relationship between the order value and the penetration rate. Referring to FIG. 13A, spatially, the display pupil surface can be divided into a plurality of regions, wherein the regions of the regions can overlap each other. In the present embodiment, the display pupil is divided into 16 regions as an example, wherein each region has at least one pixel unit and is displayed according to a corresponding side gamma curve. For example, the area B is displayed in accordance with the first side view gamma curve C31 14 201015530. In other words, each region is displayed according to a side view gamma curve, and the side view gamma curves can be the same or different. However, in the present embodiment, it is not limited to display each region at a time according to a fixed side gamma curve. As shown in Fig. 13A, at a first time, the area B is displayed in accordance with the first side view gamma curve C31. At a second time, the corresponding side gamma curve of each region can be as shown in Fig. 13B, wherein the region B is displayed according to the second side gamma curve C32. It is to be noted that the numbers in the respective regions 图 in Figs. 13A and 13B represent the numbers of different side view gamma curves. In the above, the display screen is divided into a plurality of areas for control, and the first display area and the second display area of each unit are controlled. Hereinafter, the control method of the first display area and the second display area of any of the pixel units will be described. In a first time, the first display area is displayed according to a first side view gamma curve C31, and the second display area is displayed according to a second side view gamma curve C32. In a second time, the first display area is displayed according to a third side view gamma curve, and the second display area is displayed according to the fourth side view gamma curve. In this embodiment, the first side view gamma curve may be the same as the fourth side view gamma curve, and the second side view gamma curve may be the same as the third side view gamma curve. _ Of course, it is also possible to mix and control the concepts controlled by the regions and the concepts controlled by the display zones to achieve more control combinations. The third embodiment is in a gray-scale region, when the slope of the curve of the side-view gamma curve can be adjusted. When the range of 2010 20103030 is limited, the gray-scale region can be matched by a mapping technique and a dynamic backlight driving technique. Convert to another grayscale area to increase the adjustable range of the side view gamma curve. Referring to FIG. 14, which is a gray scale number distribution map of another image data of the display device 2, the number of gray scales is concentrated in the second gray scale region C. Referring to FIG. 15, FIG. 16A and FIG. 6A simultaneously, the first side view gamma curve C 31 has a small interval between the upper and lower limits of the side view gamma curve of the second gray scale region C. Therefore, the pixel unit is When the second gray-scale area c area is displayed, the adjustable side-view brightness range is also small. Therefore, in the present embodiment, the first side view gamma curve C3l of the second gray level region c is mapped to one of the third side view gamma curves c33 of the first gray level area A. At this time, the third side view gamma curve C33 is larger in the interval between the upper and lower limits of the first gray level area A, so that the adjustable side view brightness range is also larger. If ^16B' is in the first gray-scale region a, the third side-view gamma curve cm can be adjusted to approach the zero value under the same frontal gamma C21*. Thereby, the contrast of the display device in the side viewing angle can be reduced, and the image quality can be reduced to reduce the probability of the image material being sneaked. At the same time, the backlight brightness of one of the display devices is adjusted according to the ratio of the second gray scale region C to the first gray scale region a. When the step 5 of the second gray-scale region C is larger than the gray-scale value of the first-gray-order region A, the i-light of the display device is lowered: the brightness of the image display is not affected by the change of the gray scale, and the second is affected. The grayscale value of the grayscale region C is smaller than the grayscale value of the first grayscale region I, thereby improving the backlight brightness of the display device. The display device and the image adjustment method according to the present invention, 16 201015530, wherein the first display area of the pixel unit has a first reverse direction which is perpendicular to the extending direction of the data line, and the second display area has a scan The direction in which the line extends is approximately perpendicular to the second reverse direction, such that the pixel unit has two display areas with side gamma curve characteristics. The display device of the present invention can adjust the complex side view 'gamma curve' to adjust the display image of the side view effect of the display device under the premise that the front view gamma curve is constant. Because of this, in addition to reducing the contrast, in order to prevent the display surface of the display device from being peeked, the contrast can be improved to increase the viewing angle of the display device. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional display device; FIG. 2 is a schematic view showing a top view angle of FIG. 1; FIG. 3 is a graph showing the relationship between gray scale value and transmittance of a conventional display device. Figure 4 is a schematic view showing a display device according to a preferred embodiment of the present invention; Figure 5 is a schematic view showing a pixel unit of a display device in accordance with a preferred embodiment of the present invention, and Figure 6 is a view showing a preferred embodiment of the present invention. FIG. 7 is a graph showing the relationship between the gray scale value and the transmittance of the pixel unit of the display device according to the preferred embodiment of the present invention; FIG. 7 is another gray scale value and transmittance of the pixel unit 17 201015530 of the display device according to the preferred embodiment of the present invention. 8A and 8B are diagrams showing an arrangement of liquid crystal molecules in adjacent cells of a display device according to a preferred embodiment of the present invention; and FIG. 9 is a schematic view showing a display device according to a preferred embodiment of the present invention; FIG. 10 is a flow chart showing a method for adjusting an image according to a preferred embodiment of the present invention; FIG. 11 is a diagram showing a gray scale number distribution of image data of a display device according to a preferred embodiment of the present invention; FIG. 12A and FIG. 12B are diagrams. this BRIEF DESCRIPTION OF THE DRAWINGS FIG. 13A and FIG. 13B are schematic diagrams showing a side view gamma curve of a display device according to a preferred embodiment of the present invention; FIG. 15 is another gray scale number distribution diagram showing image data of a display device according to a preferred embodiment of the present invention; and FIGS. 16A and 16B are side view gamma curves showing a display device according to a preferred embodiment of the present invention. schematic diagram. ❹ [Main component symbol description] 1, 21: pixel unit. 1 i : substrate 12: ribs 13, 213, 213a, 213b: liquid crystal molecules 2: display device 211: first display area 201015530 212: second display area 3: display mode switching module 31: first storage unit 32: second storage unit A: first gray level area B: area C: second gray level area C!: control signal © C2: switching signal
Cll、C21 :正視伽瑪曲線 C12 :側視伽瑪曲線 C22:第一側視伽瑪曲線封包 C22a:第一侧視伽瑪曲線上限 C22b:第一側視伽瑪曲線下限 C23:第二側視伽瑪曲線封包 C23a:第二側視伽瑪曲線上限 ❹ C23b :第二側視伽瑪曲線下限 C31 :第一側視伽瑪曲線 C32 :第二側視伽瑪曲線 . C33 :第三侧視伽瑪曲線 D11〜D】m :資料線 S11〜S1 n .掃描線 W11〜W14 :步驟 19C11, C21: front view gamma curve C12: side view gamma curve C22: first side view gamma curve packet C22a: first side view gamma curve upper limit C22b: first side view gamma curve lower limit C23: second side Dependent gamma curve packet C23a: second side view gamma curve upper limit ❹ C23b: second side view gamma curve lower limit C31: first side view gamma curve C32: second side view gamma curve. C33: third side View gamma curve D11~D]m: data line S11~S1 n. scan line W11~W14: step 19