200820209 九、發明說明 【發明所屬之技術領域】 本發明係關於主動矩陣型的液晶顯示元件，以及利用 該液晶顯示元件進行影像顯示之液晶顯示裝置及液晶顯示 元件之驅動方法。 【先前技術】 近年來，係廣範使用採用液晶爲顯示元件之液晶顯示 裝置。此液晶顯示裝置，例如有於大型的玻璃基板上形成 液晶驅動電路，並將此背光等光源、偏光板及彩色濾光片 等一同組合而成之所謂的直視型裝置，或是於微小基板上 形成像素，並將此與光學系列一同組合並進行擴大投射之 所謂的投射型（投影型）裝置等之可提供高精細的畫像之種 種方式，而達成商品化。此外，關於這些裝置中所使用之 液晶的驅動模式，係開發出活用下列方式之種種裝置，例 如垂直配向方式、水平配向方式、強介電液晶、 OCB(Optically Compensated Bend :光學補償彎曲）方式 等。 於此液晶顯示裝置中，一般係獨立對構成顯示區域之 像素，往基板的垂直方向施加電壓以藉此驅動液晶顯示元 件。於某一像素與該鄰接像素之間的驅動電壓差極端的大 時’係於這些像素間產生橫向電場，而可能導致液晶配向 的紊亂。起因於鄰接像素間的電壓差之液晶的配向不良係 稱爲向錯，一旦產生此配向不良，則無法依據各像素的像 -4- 200820209 素資料進行正確的影像顯示。亦即，例如會產生亮度的降 低或對比的劣化，及細微影像圖案的破壞等，此外，例如 於使用3原色進行色彩重現時，可能因當中1色的亮度改 變而產生色差等。 此問題並不限定於液晶的種類或驅動方式，而是於幾 乎所有的液晶顯示裝置中會產生，尤其是起因於該擴大率 較高之緣故，此現象於投射型的液晶顯示裝置中特別顯 著。因此，於以往的投射型液晶顯示裝置中，較多爲採用 下列手法，亦即例如以黑色遮罩覆蓋產生向錯之部分，並 且於開口部配置微透鏡陣列以進行擴大投影，而藉此抑制 向錯的影像等之手法，然而，此手法中係具有光利用效率 的降低等缺點，因此係要求更進一步的改善。 因此，例如於非專利文獻1中，係提出一種於反射型 的微顯示器中，藉由計算而對液晶的配向方向及配向限制 力與向錯的產生進行最適化處理者。此外，例如於專利文 獻1中，係提出一種控制多數個液晶顯示元件之配向方位 者。 [非專利文獻1]D· Cuypers，其他兩名，「Fringe-field induced disclinations in VAN LCos panels」，IDW’ 04 Proceedings of The 11th International Display Workshops, Society for information Display，2004 年 12 月8日，發表號碼LAD-3 [專利文獻1]日本特開200 5 -9 1 52 7號公報 200820209 【發明內容】 (發明所欲解決之課題） 然而，於上述非專利文獻1中，並未具體顯示出用以 實現如此參數之方法，因此實際上係難以實現。另一方 面，根據上述專利文獻1的技術，係能夠將起因於上述液 晶的向不良（向錯）的產生之色差現象降低某種程度。然 而，就一邊對應於隨時產生變化之鄰接像素彼此的驅動狀 況一邊予以降低此現象之觀點來看，仍然不夠充分。 本發明係鑒於該問題點而創作之發明，其目的在於提 供一種，不論顯示影像的內容爲何，均可減少液晶的配向 不良之產生，而能夠進行良好畫質的影像顯示之畫像顯示 元件、畫像顯示裝置及畫像顯示元件之驅動方法。 (用以解決課題之手段） 本發明之液晶顯示元件，係具備：包含用以進行影像 顯示的多數個像素而構成之液晶顯示面板；及以使對1個 像素的施加電壓與對該鄰接像素的施加電壓之間的電壓比 變得更小之方式，一邊逐次校正各像素的像素資料，一邊 進行上述液晶顯示面板的顯示驅動之驅動手段。 此時，上述驅動手段亦可構成爲，以特定的多數個圖 框期間之像素的反射率之時間積分作爲判斷指標，進行像 素資料的逐次校正。在此，「多數個圖框期間」是指多數 個影像圖框期間或是多數個影像圖場期間。 本發明之液晶顯示裝置，爲具備上述液晶顯示元件， -6- 200820209 且使用藉由此液晶顯示元件所調變後之光以進行影像顯示 之液晶顯示裝置。此時，可構成爲液晶投影器，此液晶投 影器係具備光源；及將從該光源所發出且藉由上述液晶顯 示元件所調變後之光投射至螢幕之投射手段。 於本發明之液晶顯示元件及液晶顯示裝置中，係以使 對1個像素的施加電壓與對該鄰接像素的施加電壓之間的 電壓比變得更小之方式，逐次校正各像素的像素資料。並 根據此校正後的像素資料，進行液晶顯示面板的顯示驅 動。 本發明之液晶顯示元件之驅動方法，爲具備包含用以 進行影像顯示的多數個像素之液晶顯示面板之液晶顯示元 件之驅動方法，係比較1個像素的像素資料與該鄰接像素 的像素資料，並從該比較結果中，於判斷對i個像素的施 加電壓與對鄰接像素的施加電壓之間的電壓比，較特定閾 値還大時，以使上述電壓比變得較閾値還小之方式地逐次 校正各像素的像素資料，之後根據校正後的像素資料進行 顯示驅動。 於本發明之液晶顯示元件之驅動方法中，係比較1個 像素的像素資料與該鄰接像素的像素資料，於判斷對1個 像素的施加電壓與對鄰接像素的施加電壓之間的電壓比， 較特定閾値還大時，以使該電壓比變得較閾値還小之方式 地逐次校正各像素的像素資料。之後根據校正後的像素資 料進行顯示驅動。 200820209 發明之效果： 根據本發明之液晶顯示元件、液晶顯示裝置及液晶顯 示元件之驅動方法，由於係構成爲以使對1個像素的施加 電壓與對該鄰接像素的施加電壓之間的電壓比變得更小之 方式地逐次校正各像素的像素資料，並且根據此校正後的 像素資料進行液晶顯示面板的顯示驅動，因此可逐次地減 少起因於鄰接像素間的施加電壓比之液晶的配向不良 (Disclination :向錯）之產生，而抑制畫像重現性的劣化。 因此’不論顯示影像的內容爲何，均能夠實現良好畫質的 影像顯示。 【實施方式】 以下係參照圖式，詳細說明本發明的實施型態。 [第1實施型態] <液晶顯示元件的構成> 第1圖係顯示本發明的第1實施型態之液晶顯示元件 的構成。此液晶顯示元件係具備··對來自於外部之輸入晝 像訊號D i η進行特定的校正之像素訊號校正部5 ;及根據 由該像素訊號校正部5所校正後之畫像訊號（輸出畫像訊 號Dout)進行影像顯示之液晶顯示部1，且如之後所述 般，爲反射型的液晶顯示元件。 液晶顯示部1係具備：以矩陣狀配置有多數個像素 1 1而成之顯示區域1 0 ;及作爲影像顯示用的驅動器之資 -8- 200820209 料驅動器1 2及掃描驅動器1 3。 於各像素1 1內形成有像素驅動電路〗4，於顯示區域 1 〇的周邊配置有上述資料驅動器1 2及掃描驅動器1 3。於 資料驅動器1 2中，係經由訊號線1 5輸入有來自於像素訊 號校正部5的輸出畫像訊號Dout。像素驅動電路1 4係形 成於之後所述之各反射型像素電極42的下層，一般爲复 有切換電晶體T1及將電壓供應至液晶2之輔助電容c i 而構成。 於像素驅動電路1 4中，於列方向配置有多數條資料 線1 2 A，於行方向配置有多數條掃描線1 3 A。各條資料線 1 2 A與各條掃描線1 3 A的交叉點，係對應於1個像素。各 切換電晶體T 1的源極電極係連接於資料線1 2 A，閘極電 極連接於掃描線13A。各切換電晶體T1的汲極電極係連 接於各反射型像素電極4 2及輔助電容C 1。各條資料線 1 2 A係連接於資料驅動器1 2，從該資料驅動器1 2中供應 有畫像訊號。各條掃描線1 3 A係連接於掃描驅動器1 3， 從該掃描驅動器1 3中依序供應有掃描訊號。 第2圖係顯示液晶顯示部1的剖面構成。於此液晶顯 示部1中，係具備：互爲對向配置之一對的對向基板3 0 及像素電極基板4 0 ;及注入於這些基板間之垂直配向液 晶2。 對向基板3 0係具備：玻璃基板3 1 ;及層積於此玻璃 基板3 1上之透明電極3 2。於透明電極3 2之接觸於垂直 配向液晶2的一面側，更於全面層積有配向膜3 3。透明 -9- 200820209 電極3 2爲具有光的透射作用之電極材料，一般係使用成 爲氧化錫（Sn02)與氧化銦（In2〇3)的固溶體物質之 ITO(Indium Tin Oxide :氧化銦錫膜）。於透明電極 32 上，施加有全像素區域中爲共通之電位（例如爲接地電 位）。 像素電極基板40，爲例如於單晶矽基板4 1上，以矩 陣狀配置形成有反射型像素電極4 2而成。於矽基板4 1 上 ’ CMOS(Complementary Metal Oxide Semiconductor · 互補金氧半導體）或 NMOS(Negative Metal Oxide Semiconductor:負通道金氧半導體）等之由切換電晶體τΐ 及電容器（輔助電容）Cl所形成之主動型驅動電路。於像 素電極基板40之接觸於垂直配向液晶2的一面側，更於 全面層積有配向膜43。 反射型像素電極42係由以鋁（A1)或銀（Ag)所代表之 金屬膜所構成。於使用鋁電極等作爲反射型像素電極42 時，係兼具光的反射膜之功能及施加電壓於液晶之電極之 功能兩者。此外，爲了提高反射率，亦可於鋁電極上形成 如電介質反射鏡般之由多層膜所構成的反射層。 此反射型的液晶顯示元件中所使用之垂直配向液晶 2 ’該分子長軸於施加電壓爲零時，係配向於對各基板面 幾乎呈垂直之方向，一旦施加電壓，則往面內傾斜而使偏 光狀態產生傾斜。於驅動時若液晶分子的傾斜方向並非一 定，則會產生明暗波紋，爲了避免此現象，乃必須預先於 一定方向（一般爲裝置的對角方向）賦予些微的預傾角而產 -10- 200820209 生垂直配向。若預傾角過大，則垂直配向性會劣化’導致 黑階的提高使對比降低，因此，一般而言係將預傾角控制 於1°〜7°之間。 配向膜33、43，例如可使用以二氧化矽（Si02)所代表 之氧化矽膜的斜向蒸鍍膜。此時，藉由改變斜向蒸鍍時的 蒸鍍角度，可控制上述垂直配向液晶2的預傾角。此外， 配向膜3 3、43亦可使用對聚亞醯胺系的有機化合物進行 磨刷（配向）處理之膜。此時，可藉由改變磨刷條件而控制 預傾角。 在此，係參照第3圖及第4圖，說明於以往的液晶顯 示元件中所產生之配向不良（向錯）。第3圖及第4圖係表 示配向不良的產生型態，（A)表示液晶顯示部內的位置與 光的反射強度之間的關係，（B)表示液晶顯示部內的位置 與垂直配向液晶1 02的配向方向之間的關係。圖中的圖號 R 1 0、R 2 0係表示理想的反射強度特性，圖號r 1丨、r 2 i 表示實際的反射強度特性。此外，圖中的箭頭P 1、P4係 表示垂直配向液晶1 0 2的預傾方向（爲對各像素施加電壓 時之垂直配向液晶分子的傾斜方向，係由預傾方向所決 定）’圖號1 4 2 W、1 4 2 W 1、1 4 2 W 2係模式性表示施加白階 電壓之像素，亦即以較第1特定灰階還高的亮度所顯示之 像素（白顯示像素），圖號1 4 2 B、1 4 2 B 1、1 4 2 B 2係模式性 表示施加黑階電壓之像素，亦即以較第1特定灰階還低且 較第2特定灰階更低的亮度所顯示之像素（黑顯示像素）。 從第3圖（B)及第4圖（B)中可得知，於白顯示像素 -11 - 200820209 142W與黑顯示像素142B1之交界附近，以及於白 素142W1與黑顯示像素142B之交界附近，由於互 之白階的施加電壓與黑階的施加電壓之間的電壓差 因此於這些像素間會產生橫向電場，且如圖號P2、 分別顯示般，液晶1 0 2的配向產生紊亂。亦即，於 像素142W1、142W中，原先液晶應配向於水平方 由於像素間所產生之橫向電場，而配向於垂直方 此，由於此液晶2的配向不良，如圖中的圖號P 3、 分別顯示般，光的反射強度於該部分中產生局部性 此外亦於液晶顯示部上產生黑條紋。除此之外亦產 亮度的降低或對比的劣化，及細微影像圖案的破壞 如於使用3原色進行色彩重現時，可能因當中1色 改變而產生色差等。 此外，從第3圖（B)及第4圖（B)中可得知，此 良，於沿著垂直配向液晶1 02的預傾方向P 1、P4 示像素往黑顯示像素所依序排列之鄰接像素彼此中 生於白顯示像素的位置。因此，爲了更有效率地進 所述般之依據像素訊號校正部5所進行之像素訊號 校正，較理想爲選擇性地（優先地）對鄰接像素彼此 詳細內容將於之後敘述（第8圖）。 返回第1圖的說明，像素訊號校正部5，爲對 外部之輸入畫像訊號Din進行特定的逐次校正者。 第5圖係顯示畫像訊號校正部5的功能方塊構 畫像訊號校正部5係具備：伽瑪校正部5 1 ;記憶f 顯示像 相鄰接 極大， P5所 白顯示 向，但 向。因 P6所 降低， 生例如 等，例 的亮度 配向不 從白顯 ，係產 行之後 的逐次 進行。 來自於 成。此 沿52 ; -12- 200820209 比較部5 3 ;校正量決定部5 4 ;及向錯用校正部5 5。 伽瑪校正部5 1，係對來自於外部之輸入畫像訊號Din 進行特定的伽瑪校正。所謂的伽瑪校正，是指對應於因各 元件之液晶層的厚度或輸出光波長等的不同而不同之所謂 的V-T曲線（驅動電壓-光輸出曲線），而對各像素所進行 之校正。 S己憶部5 2 ’係將由伽瑪校正部51進行伽瑪校正後之 各像素的畫像訊號（像素資料），記憶爲於比較部5 3中所 需的像素數量，亦即如下述般之與鄰接像素的像素資料進 行比較時所需的像素數量之部分，例如由SRAM(Static Random Access Memory :靜態隨機存取記憶體）等所構 成。 比較部5 3，係參照記憶部5 2中所記憶之像素資料， 以比較各像素的畫像素資料及鄰接像素的像素資料。具體 而言，係比較對1個像素的施加電壓（驅動電壓）與對該鄰 接像素的施加電壓之間的電位差。 校正量決定部5 4，係因應比較部5 3的比較結果，判 斷對1個像素的施加電壓與對該鄰接像素的施加電壓之間 的電壓比是否較特定閾値還大，且於判斷此電壓比較特定 閾値還大時，以使電壓比變得較小之方式，使用特定的校 正表而決定各像素的像素資料之校正量。 第6圖係顯示，用以規定互相鄰接之像素1 1 a、；[】B 的校正量之校正表7的一例以作爲校正表的一例，第6圖 (A)係顯示，校正前之像素1 1 A、1 1B的像素資料VinA、 -13- 200820209[Technical Field] The present invention relates to an active matrix type liquid crystal display element, and a liquid crystal display device for performing image display using the liquid crystal display element and a method of driving the liquid crystal display element. [Prior Art] In recent years, a liquid crystal display device using a liquid crystal as a display element has been widely used. The liquid crystal display device is, for example, a so-called direct-view device in which a liquid crystal driving circuit is formed on a large glass substrate, and a light source such as a backlight, a polarizing plate, and a color filter are combined, or on a micro substrate. A so-called projection type (projection type) device in which a pixel is combined with an optical series and expanded projection is provided, and various forms of high-definition images can be provided, and commercialization is achieved. In addition, regarding the driving mode of the liquid crystal used in these devices, various devices have been developed which use the following methods, such as a vertical alignment method, a horizontal alignment method, a ferroelectric liquid crystal, an OCB (Optically Compensated Bend) method, and the like. . In the liquid crystal display device, generally, pixels constituting the display region are independently applied, and a voltage is applied to the vertical direction of the substrate to thereby drive the liquid crystal display element. The extreme difference in driving voltage difference between a certain pixel and the adjacent pixel is caused by a lateral electric field between the pixels, which may cause disorder of liquid crystal alignment. The misalignment of the liquid crystal due to the voltage difference between adjacent pixels is called a disclination, and if such alignment failure occurs, accurate image display cannot be performed based on the image of each pixel -4-200820209. That is, for example, deterioration of brightness or deterioration of contrast, deterioration of fine image patterns, and the like may occur, and for example, color reproduction using three primary colors may cause chromatic aberration or the like due to change in brightness of one of the colors. This problem is not limited to the type of liquid crystal or the driving method, but is generated in almost all liquid crystal display devices, and this phenomenon is particularly remarkable in a projection type liquid crystal display device because of the high expansion ratio. . Therefore, in the conventional projection type liquid crystal display device, the following method is often employed, that is, for example, a portion that generates a disclination is covered with a black mask, and a microlens array is disposed in the opening portion to expand the projection, thereby suppressing A technique such as an erroneous image, however, this technique has disadvantages such as a decrease in light use efficiency, and therefore requires further improvement. For this reason, for example, in the non-patent document 1, it is proposed to optimize the alignment direction of the liquid crystal, the alignment control force, and the generation of the disclination in the reflection type microdisplay. Further, for example, in Patent Document 1, a direction of orientation for controlling a plurality of liquid crystal display elements is proposed. [Non-Patent Document 1] D·Cuypers, two others, "Fringe-field induced disclinations in VAN LCos panels", IDW' 04 Proceedings of The 11th International Display Workshops, Society for information Display, December 8, 2004, published [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The way to implement such parameters is therefore actually difficult to implement. On the other hand, according to the technique of Patent Document 1, it is possible to reduce the chromatic aberration caused by the failure (dislocation) of the liquid crystal to some extent. However, it is still insufficient from the viewpoint of lowering this phenomenon in response to the driving condition of adjacent pixels which change at any time. The present invention has been made in view of the above problems, and an object of the invention is to provide an image display element and an image capable of reducing image alignment failure of a liquid crystal regardless of the content of a displayed image. A display device and a method of driving an image display element. (Means for Solving the Problem) The liquid crystal display device of the present invention includes: a liquid crystal display panel including a plurality of pixels for performing image display; and an applied voltage for one pixel and the adjacent pixel A driving means for driving the display of the liquid crystal display panel while sequentially correcting the pixel data of each pixel so that the voltage ratio between the applied voltages becomes smaller. In this case, the driving means may be configured to sequentially correct the pixel data by using the time integral of the reflectance of the pixel in the specific plurality of frame periods as the determination index. Here, "majority of frame periods" refers to a period of a plurality of image frames or a period of a plurality of image fields. The liquid crystal display device of the present invention is a liquid crystal display device including the above liquid crystal display element, -6-200820209, and using light modulated by the liquid crystal display element to perform image display. In this case, a liquid crystal projector having a light source and a projection means for projecting light modulated by the liquid crystal display element and projected by the liquid crystal display element onto the screen may be employed. In the liquid crystal display device and the liquid crystal display device of the present invention, the pixel data of each pixel is sequentially corrected so that the voltage ratio between the applied voltage to one pixel and the applied voltage to the adjacent pixel is made smaller. . The display driving of the liquid crystal display panel is performed based on the corrected pixel data. The method for driving a liquid crystal display device of the present invention is a method for driving a liquid crystal display device including a liquid crystal display panel including a plurality of pixels for performing image display, and compares pixel data of one pixel with pixel data of the adjacent pixel. And from the comparison result, when it is determined that the voltage ratio between the applied voltage of the i pixels and the applied voltage to the adjacent pixels is larger than the specific threshold ,, so that the voltage ratio becomes smaller than the threshold 値The pixel data of each pixel is sequentially corrected, and then the display driving is performed based on the corrected pixel data. In the driving method of the liquid crystal display device of the present invention, the pixel data of one pixel and the pixel data of the adjacent pixel are compared, and a voltage ratio between an applied voltage of one pixel and an applied voltage to an adjacent pixel is determined. When it is larger than the specific threshold ,, the pixel data of each pixel is sequentially corrected so that the voltage ratio becomes smaller than the threshold 値. Then, display driving is performed based on the corrected pixel data. 200820209 Effects of the Invention: The liquid crystal display device, the liquid crystal display device, and the liquid crystal display device driving method according to the present invention are configured such that the voltage ratio between the applied voltage to one pixel and the applied voltage to the adjacent pixel is configured. The pixel data of each pixel is sequentially corrected in a smaller manner, and the display driving of the liquid crystal display panel is performed based on the corrected pixel data, so that the alignment of the liquid crystal due to the applied voltage ratio between adjacent pixels can be sequentially reduced. (Disclination: the occurrence of discrepancies), and suppresses the deterioration of the reproducibility of the portrait. Therefore, regardless of the content of the displayed image, it is possible to achieve a good image quality display. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [First Embodiment] <Configuration of Liquid Crystal Display Element> Fig. 1 shows a configuration of a liquid crystal display element according to a first embodiment of the present invention. The liquid crystal display element includes a pixel signal correcting unit 5 that specifically corrects the input image signal D i η from the outside, and an image signal corrected by the pixel signal correcting unit 5 (output image signal) Dout) The liquid crystal display unit 1 that performs image display, and is a reflective liquid crystal display element as will be described later. The liquid crystal display unit 1 includes a display area 10 in which a plurality of pixels 1 1 are arranged in a matrix, and a memory driver 1 2 and a scan driver 13 as drivers for video display. A pixel drive circuit 4 is formed in each of the pixels 1 1 , and the data driver 12 and the scan driver 13 are disposed around the display area 1 . In the data driver 12, the output image signal Dout from the pixel signal correcting unit 5 is input via the signal line 15. The pixel driving circuit 14 is formed in a lower layer of each of the reflective pixel electrodes 42 to be described later, and is generally constituted by a plurality of switching transistors T1 and an auxiliary capacitor c i for supplying a voltage to the liquid crystal 2. In the pixel drive circuit 14, a plurality of data lines 1 2 A are arranged in the column direction, and a plurality of scanning lines 1 3 A are arranged in the row direction. The intersection of each data line 1 2 A and each scanning line 1 3 A corresponds to 1 pixel. The source electrode of each switching transistor T 1 is connected to the data line 1 2 A, and the gate electrode is connected to the scanning line 13A. The drain electrode of each switching transistor T1 is connected to each of the reflective pixel electrode 42 and the auxiliary capacitor C1. Each data line 1 2 A is connected to the data driver 12, and an image signal is supplied from the data driver 12. Each of the scanning lines 1 3 A is connected to the scan driver 13 , and scan signals are sequentially supplied from the scan driver 13 . Fig. 2 shows a cross-sectional configuration of the liquid crystal display unit 1. The liquid crystal display unit 1 includes a counter substrate 30 and a pixel electrode substrate 40 that are opposite each other, and a vertical alignment liquid crystal 2 injected between the substrates. The counter substrate 30 includes a glass substrate 3 1 and a transparent electrode 3 2 laminated on the glass substrate 31. On the side of the transparent electrode 32 which is in contact with the vertical alignment liquid crystal 2, the alignment film 33 is further laminated. Transparent-9- 200820209 Electrode 3 2 is an electrode material having a light transmitting effect, and generally uses ITO (Indium Tin Oxide: indium tin oxide) which is a solid solution of tin oxide (Sn02) and indium oxide (In2〇3). membrane). On the transparent electrode 32, a potential common to the entire pixel region (for example, a ground potential) is applied. The pixel electrode substrate 40 is formed, for example, on a single crystal germanium substrate 4 1 in which a reflective pixel electrode 42 is formed in a matrix. On the substrate 4 1 , a CMOS (Complementary Metal Oxide Semiconductor) or an NMOS (Negative Metal Oxide Semiconductor) is formed by switching between a transistor τ ΐ and a capacitor (auxiliary capacitor) Cl. Active drive circuit. On the side of the pixel electrode substrate 40 that is in contact with the vertical alignment liquid crystal 2, the alignment film 43 is further laminated. The reflective pixel electrode 42 is composed of a metal film represented by aluminum (A1) or silver (Ag). When an aluminum electrode or the like is used as the reflective pixel electrode 42, both the function of the light reflecting film and the function of applying a voltage to the electrode of the liquid crystal are obtained. Further, in order to increase the reflectance, a reflective layer composed of a multilayer film such as a dielectric mirror may be formed on the aluminum electrode. The vertical alignment liquid crystal 2' used in the reflective liquid crystal display device has a major axis that is oriented substantially perpendicular to the substrate surface when the applied voltage is zero, and is tilted inward when a voltage is applied. The tilt state is tilted. If the tilt direction of the liquid crystal molecules is not constant during driving, light and dark ripples will be generated. In order to avoid this phenomenon, it is necessary to give a slight pretilt angle in a certain direction (generally the diagonal direction of the device) in advance to produce -10 200820209 Vertical alignment. If the pretilt angle is too large, the vertical alignment property is deteriorated, resulting in an increase in the black level to lower the contrast. Therefore, generally, the pretilt angle is controlled to be between 1 and 7 degrees. As the alignment films 33 and 43, for example, an oblique vapor deposition film of a hafnium oxide film represented by cerium oxide (SiO 2 ) can be used. At this time, the pretilt angle of the vertical alignment liquid crystal 2 can be controlled by changing the vapor deposition angle at the time of oblique vapor deposition. Further, as the alignment films 33 and 43, a film which is subjected to a rubbing (alignment) treatment with a polyiminamide-based organic compound may be used. At this time, the pretilt angle can be controlled by changing the brushing conditions. Here, the misalignment (dislocation) generated in the conventional liquid crystal display element will be described with reference to Figs. 3 and 4 . Figs. 3 and 4 show the generation pattern of the alignment failure, (A) shows the relationship between the position in the liquid crystal display unit and the reflection intensity of light, and (B) shows the position in the liquid crystal display unit and the vertical alignment liquid crystal 102. The relationship between the orientation directions. The figure numbers R 1 0 and R 2 0 in the figure represent ideal reflection intensity characteristics, and the figure numbers r 1 丨 and r 2 i represent actual reflection intensity characteristics. In addition, the arrows P1 and P4 in the figure indicate the pretilt direction of the vertical alignment liquid crystal 110 (the tilt direction of the vertical alignment liquid crystal molecules when a voltage is applied to each pixel, which is determined by the pretilt direction). 1 4 2 W, 1 4 2 W 1 , 1 4 2 W 2 is a mode indicating a pixel to which a white-order voltage is applied, that is, a pixel (white display pixel) displayed with a higher luminance than the first specific gray scale, Figure 1 4 2 B, 1 4 2 B 1 , 1 4 2 B 2 is a pattern that represents a pixel to which a black level voltage is applied, that is, lower than the first specific gray level and lower than the second specific gray level. The pixel displayed by the brightness (black display pixel). It can be seen from Fig. 3(B) and Fig. 4(B) that the vicinity of the boundary between the white display pixel -11 - 200820209 142W and the black display pixel 142B1 and the boundary between the white 142W1 and the black display pixel 142B Due to the voltage difference between the applied voltage of the white level and the applied voltage of the black level, a transverse electric field is generated between the pixels, and as shown by the figure P2, the alignment of the liquid crystal 110 is disturbed. That is, in the pixels 142W1, 142W, the original liquid crystal should be aligned to the horizontal side due to the transverse electric field generated between the pixels, and the vertical direction is aligned. Since the alignment of the liquid crystal 2 is poor, the figure P 3 in the figure, As shown in the figure, the reflection intensity of the light locally is generated in the portion, and black streaks are also generated on the liquid crystal display portion. In addition to this, the reduction in brightness or the deterioration of contrast, and the destruction of fine image patterns, such as the use of the three primary colors for color reproduction, may result in chromatic aberration due to the change of one color. In addition, as can be seen from FIGS. 3(B) and 4(B), the pixels are arranged in the pretilt direction P 1 and P4 along the vertical alignment liquid crystal 102 in order to the black display pixels. The adjacent pixels are born in each other at the position of the white display pixel. Therefore, in order to more efficiently perform the pixel signal correction by the pixel signal correcting unit 5 as described above, it is preferable that the details of the adjacent pixels are selectively (preferred) to be described later (FIG. 8). . Returning to the description of Fig. 1, the pixel signal correcting unit 5 performs a specific successive correction for the external input image signal Din. Fig. 5 is a diagram showing the functional block configuration of the image signal correcting unit 5. The image correcting unit 5 includes a gamma correcting unit 5 1 ; the memory f displays the image adjacent to the maximum, and P5 is displayed in the white direction. Since P6 is reduced, for example, etc., the brightness alignment of the example is not white, and the system is successively performed after the production. From Cheng. This edge 52; -12-200820209 comparison unit 5 3 ; correction amount determining unit 5 4 ; and misalignment correcting unit 5 5 . The gamma correction unit 51 performs specific gamma correction on the input image signal Din from the outside. The gamma correction is a correction for each pixel in accordance with a so-called V-T curve (driving voltage-light output curve) which differs depending on the thickness of the liquid crystal layer of each element or the wavelength of the output light. The image data (pixel data) of each pixel subjected to gamma correction by the gamma correction unit 51 is stored as the number of pixels required in the comparison unit 53, that is, as follows The portion of the number of pixels required for comparison with the pixel data of the adjacent pixels is composed of, for example, an SRAM (Static Random Access Memory) or the like. The comparing unit 53 refers to the pixel data stored in the memory unit 52 to compare the pixel data of each pixel with the pixel data of the adjacent pixels. Specifically, the potential difference between the applied voltage (driving voltage) for one pixel and the applied voltage to the adjacent pixel is compared. The correction amount determining unit 54 determines whether the voltage ratio between the applied voltage to one pixel and the applied voltage to the adjacent pixel is larger than a specific threshold 因, and determines the voltage, based on the comparison result of the comparing unit 53. When the comparison specific threshold is still large, the correction amount of the pixel data of each pixel is determined using a specific correction table so that the voltage ratio becomes smaller. Fig. 6 is a view showing an example of a correction table 7 for specifying correction amounts of pixels 1 1 a and [ ] B adjacent to each other as an example of a correction table, and Fig. 6 (A) shows a pixel before correction. 1 1 A, 1 1B pixel data VinA, -13- 200820209
VinB之値與校正後之像素丨丨a、ΠΒ的像素資料VoutA、 VoutB之値之間的關係。此外，第6圖（B)係顯示於此校 正表7當中’用以規定於VinA = 40時之VinB與VoutA、 VoutB之値之間的關係之校正表71。於這些圖式中， VinA、VinB、VoutA、VoutB 之値爲「0」〜「100」者， 係分別表示對像素1 1 A、1 1B的施加電壓（驅動電壓）之大 小，且以「0」爲黑階顯示、以「1 〇〇」爲白階顯示時之百 分比。此外，第6圖（B)中的圖號A1、B1分別表示VinA 及VinB的特性，圖號A2、B2分別表示VoutA、VoutB 的特性。 根據，第6圖（A)、第6圖（B)的校正表7、71，例如 從比較部5 3的比較結果中，於得知像素i i a的像素資料 VinA =40及像素1 1 B的像素資料VinB =0時，校正量決 定部54，係以使校正後之像素丨丨a的像素資料VoutA =60及像素1 1 B的像素資料VoutB =6之方式地逐次決定 像素資料VinA、VinB的校正量。 此外’第6圖（B)中所示之資料範圍w 1，係規定用以 判斷是否進行像素資料的逐次校正時之閾値。亦即，於此 校正表7 1中’例如於像素1丨a、1 1 B當中像素資料爲較 大之値與較小之値之比値爲2倍以上，具體而言，相對於 VinA =40，VinB =20以下或VinB =80以上時（資料範圍 W 1的外側），係進行像素資料的逐次校正。 更具體而S ’例如％ 7圖（A)所示般，於VinA =40且 VinB =100時，校正量決定部54係藉由校正表71，如第 -14- 200820209 6圖（B)及第7圖（A)中的箭頭P72、P71所分別顯示般， 以使VoutA - 45及VoutB =90之方式地逐次決定像素杳料The relationship between the VinB and the corrected pixel data 丨丨a, 像素 pixel data VoutA, VoutB. Further, Fig. 6(B) shows a correction table 71 in the correction table 7 for specifying the relationship between VinB and VoutA, VoutB when VinA = 40. In these figures, the sum of VinA, VinB, VoutA, and VoutB is "0" to "100", which indicates the magnitude of the applied voltage (driving voltage) to the pixels 1 1 A and 1 1B, respectively, and is "0". The percentage displayed for the black level display and "1 〇〇" as the white level display. Further, the drawing numbers A1 and B1 in Fig. 6(B) indicate the characteristics of VinA and VinB, respectively, and the drawing numbers A2 and B2 indicate the characteristics of VoutA and VoutB, respectively. According to the correction tables 7 and 71 of FIGS. 6(A) and 6(B), for example, from the comparison result of the comparison unit 53, the pixel data VinA=40 and the pixel 1 1 B of the pixel iia are known. When the pixel data VinB =0, the correction amount determining unit 54 successively determines the pixel data VinA, VinB such that the pixel data VoutA=60 of the corrected pixel 丨丨a and the pixel data VoutB=6 of the pixel 1 1 B are successively determined. The amount of correction. Further, the data range w1 shown in Fig. 6(B) is a threshold 规定 for determining whether or not to perform pixel correction successively. That is, in the correction table 71, for example, the ratio of the pixel data of the pixels 1丨a and 1 1 B is larger than the smaller one, which is more than 2 times, specifically, relative to VinA = 40, when VinB = 20 or less or VinB = 80 or more (outside of the data range W 1 ), the pixel data is sequentially corrected. More specifically, as shown in the figure (A) of Fig. 7, when VinA = 40 and VinB = 100, the correction amount determining unit 54 is corrected by the table 71, as shown in Fig. -14-200820209 (Fig. In the case of arrows P72 and P71 in Fig. 7(A), the pixel data is successively determined so that VoutA - 45 and VoutB = 90 are successively determined.
VinA、VinB的校正量。亦即，係以使像素資料的比値從The amount of correction for VinA and VinB. That is, to compare the pixel data
VinB/VinA=1 00/40 變成較小的 v〇utB/V〇utA = 90/45 之方 式地決定校正量。 此外’例如弟7圖（B )所不般，於V i η A = 4 0且V i η B =0時，校正量決定部54係藉由校正表71，如第6圖（Β) 及第7圖（Β)中的箭頭Ρ73、Ρ74所分別顯示般，以使 VoutA =60及 VoutB =5之方式地逐次決定像素資料 V i n A、V i η B的校正量。亦即，係以使像素資料的比値從 VinB/VinA = 40/0 變成較小的 VoutB/VoutA = 60/5 之方式地 決定校正量。此外，於如此之一邊的像素資料爲黑階（或 是黑階附近）時，較理想爲優先提高該黑階的像素資料之 値，亦即增加黑顯示像素的施加電壓。藉此，即使像素資 料之値未產生較大變化，亦能夠使降低像素資料的比値之 效果大幅提高（此時係從無限大（〇〇)減少至15)。 此外，例如第8圖所示般，於V i η A = 4 0且V i η B = 0 時，校正量決定部54亦能夠以使VoutA =40及VoutB =5 之方式地逐次決定像素資料 VinA、VinB的校正量。如 此，於對上述預傾角方向上從白顯示像素往黑顯示像素所 依序排列之鄰接像素彼此，選擇性地（優先地）進行校正 時，像素資料的比値係從 VinB/VinA = 40/0變成更小的 VoutB/VoutA = 40/5，因而較爲理想。 如此，係使用校正表7 1並藉由校正量決定部5 4以逐 -15- 200820209 次決定像素資料的校正量，該校正量係被輸出至向錯用校 正部5 5。 返回第5圖的說明，向錯用校正部5 5係將校正量決 定部5 4中所決定之校正量，加算於記憶部5 2中所記憶之 像素資料’藉此產生成爲校正後的畫像訊號之輸出畫像資 料DoUt，並輸出至液晶顯示部i內的資料驅動器12。 接下來說明本實施型態之液晶顯示元件的作用。 於此反射型液晶顯示元件中，如第2圖所示般，係藉 由反射型像素電極42的反射功能，將從對向基板30側入 射且通過垂直配向液晶2之入射光L 1予以反射。於反射 型像素電極42中所反射之光L1，係以與入射時爲相反方 向’通過垂直配向液晶2及對向基板30而射出。此時， 垂直配向液晶2係因應對向的電極間之電位差，使該光學 特性產生變化而將通過的光L 1予以調變。藉由此光調 變，可實現色階表現，該調變後的光L2係利用於影像顯 不 ° 對垂直配向液晶2之電壓的施加，係藉由第1圖所示 之像素驅動電路1 4而進行。資料驅動器1 2係因應從像素 訊號校正部5經由訊號線1 5所輸入之輸出畫像訊號 D out，將畫像訊號供應至資料線12A。掃描驅動器13係 於特定的時序中，依序將掃描訊號供應至各條掃描線 1 3 A。藉此，由來自於掃描線1 3 A的掃描訊號所掃描且施 加有來自於資料線1 2 A的畫像訊號之部分的像素’係選 擇性地被驅動。 -16- 200820209 在此，於第5圖所示之像素訊號校正部5中，係根據 來自於外部的輸入畫像訊號Din，對於顯示區域^ 〇內的 各像素11 ’以使對1個像素的施加電壓（驅動電壓）與對該 鄰接像素的施加電壓之間的電壓比變得較小之方式，對各 像素1 1的像素資料進行逐次校正。具體而言，由伽瑪校 正部5 1進行伽瑪校正後之像素資料係被記錄至記憶部 5 2 ’並根據該記憶後的像素資料，藉由比較部5 3以比較 1個像素的像素資料及該鄰接像素的像素資料。之後根據 該比較結果’於校正量決定部5 4中，使用例如第6圖所 示之校正表7、7 1，於判斷對1個像素的施加電壓與對鄰 接像素的施加電壓之間的電壓比較特定閾値還大時，例如 第6圖〜第8圖所示般，係以使該電壓比變得較小，且各 像素1 1的顯示色階或色階比接近於期望値之方式，逐次 校正各像素的像素資料。之後根據此校正後的像素資料 (輸出畫像訊號Dout)，於液晶顯示部1中進行上述顯示驅 動。 如上述般’於本實施型態之液晶顯示元件中，於像素 訊號校正部5中，係以使對1個像素的施加電壓與對該鄰 接像素的施加電壓之間的電壓比變得較小之方式，對各像 素1 1的像素資料（輸入畫像訊號Din)進行逐次校正，並且 根據此校正後的像素資料（輸出畫像訊號D 〇 u t )，進行液晶 顯示部1的顯示驅動，因此可逐次地減少起因於鄰接像素 間的施加電壓差之液晶的配向不良（Disclination :向錯）之 產生，而抑制畫像重現性的劣化。因此，不論顯示影像的 -17- 200820209 內容（輸入畫像訊號Din之値）爲何，均能夠實現良好畫質 的影像顯示。 再者，像素訊號校正部5內的校正量決定部54，係 使用例如第6圖所示之特定的校正表而決定校正量，因此 僅需選擇預先規定的校正量而能夠簡單且高速地進行校 正。 此外，於一邊的像素資料爲黑階（或是黑階附近）時， 於優先提高該黑階的像素資料之値，亦即增加黑顯示像素 的施加電壓之情況下，即使像素資料之値未產生較大變 化，亦更可有效降低像素資料的比値。因此可更容易消除 液晶的配向不良。 此外，於對沿著垂直配向液晶2的預傾方向從白顯示 像素往黑顯示像素所依序排列之鄰接像素彼此，選擇性地 (優先地）進行校正時，由於係對容易產生液晶的配向不良 之部分進行校正，因此能夠更有效率地像素訊號的逐次校 正。此外，由於係決定校正的優先順序而進行校正，因此 可避免於校正處理中產生遺漏之情形。於垂直配向液晶2 的預傾方向例如爲像素的對角方向（於像素爲正方形時， 爲對水平方向或垂直方向成45度之方向）時，係構成爲， 沿著表不出液晶分子的預傾方向之向量的水平或垂直成分 的方向’選擇性地（優先地）對從表示白顯示像素之狀態遷 移至表示黑顯示像素之狀態之各鄰接像素對進行校正。具 體而言’係使比較部53可偵測出各像素爲白顯示像素或 黑顯示像素而構成。之後’於以液晶分子對像素從右下方 -18- 200820209 朝左上方傾斜之方式地於像素電極上形成配向膜時，於比 較p|5 5 3偵測出鄰接像素封處於在左側爲黑顯不像素，在 右側爲白顯示像素而依序排列之狀態時，校正量決定部 54係選擇性地（優先地）進行校正而構成。 此外，例如第9圖的時序圖所示般，係以於特定的多 數個圖框期間（或多數個圖場期間之時序tlO〜tl3爲止的3 個水平期間（1個水平期間=1H))中之各像素1 1的反射率之 時間積分作爲判斷指標，且例如圖中的箭頭P 7 5、P 7 6所 示般，進行像素資料的逐次校正。於如此構成時，於像素 訊號涵蓋多數個圖框期間中未產生變化的情況下，可有效 地抑制因向錯的產生所造成之畫質重現性的劣化。 <液晶顯示裝置的構成> 接下來說明使用有第1圖所示的構成之液晶顯示元件 之液晶顯示裝置的例子。在此，如第1 〇圖所示般，係說 明以反射型的液晶顯示元件作爲光燈泡而使用之反射型液 晶投影器（液晶投影器8)的例子。 此液晶投影器8爲使用3片之紅、藍及綠的各色用液 晶光燈泡8R、8G、8B而進行彩色畫像顯示之所謂的3片 式。此反射型液晶投影器，係沿著光軸0L具備光源8 1 ; 二色性分光鏡82、83 ;及全反射鏡84。此外，此液晶投 影器8係具備偏光分光鏡85、86、87 ;合成稜鏡88 ;投 射透鏡89 ;及螢幕80。 光源81爲發出包含彩色畫像顯示所需之紅色光（R)、 -19- 200820209 藍色光（B)、綠色光（G)之白色光者，例如由鹵素燈、金屬 鹵化物燈或氙氣燈等所構成。 二色性分光鏡8 2係具有將來自於光源8 1的光分離爲 藍色光與其他色的光之功能。二色性分光鏡8 3係具有將 通過二色性分光鏡82的光分離爲紅色光與綠色光之功 能。全反射鏡84係將由二色性分光鏡82所分離之藍色 光，朝向偏光分光鏡8 7反射。 偏光分光鏡85、86、87，係分別沿著紅色光、綠色 光、藍色光的光路徑而設置。這些偏光分光鏡85、86、 87係分別具有偏光分離面85A、86A、87A，於此偏光分 離面85A、86A、87A中，具有將入射的各色光分離爲互 呈直交之2個偏光成分之功能。偏光分離面85 A、86A、 87A係將一邊的偏光成分（例如爲S偏光成分）予以反射， 且讓另一邊的偏光成分（例如爲P偏光成分）透射。 液晶光燈泡8R、8G、8B，係由上述構成的反射型液 晶顯示元件（第1圖、第2圖）所構成。由偏光分光鏡85、 86、87的偏光分離面85A、86A、87A所分離之特定的偏 光成分（例如爲S偏光成分）的色彩光，係入射於這些液晶 光燈泡 8 R、8 G、8 B中。液晶光燈泡 8 R、8 G、8 B係具 有，因應根據像素訊號所賦予之驅動電壓所驅動，將入射 光予以調變，且將調變後的光朝向偏光分光鏡85、86、 8 7反射之功能。 合成稜鏡88係具有，將從液晶光燈泡8R、8G、8B 所射出，且通過偏光分光鏡85、86、87之特定的偏光成 -20- 200820209 分（例如爲p偏光成分）之色彩光予以合成之功能。投射透 鏡89係具有，將從合成稜鏡88所射出之合成光朝向螢幕 8 〇投射之投射手段的功能。 於以上構成之反射型液晶投影器8中，從光源8 1所 射出之白色光，首先藉由二色性分光鏡8 2的功能而分離 爲藍色光與其他色的光（紅色光及綠色光）。當中，藍色光 係藉由全反射鏡84的功能而朝向偏光分光鏡87反射。另 一方面，紅色光及綠色光係藉由二色性分光鏡83的功 能，更分離爲紅色光與綠色光。分離後的紅色光及綠色 光，係分別入射於偏光分光鏡85、86。 偏光分光鏡85、86、87，於偏光分離面85A、86A、 8 7A中，係將入射的各色光分離爲互呈直交之2個偏光成 分。此時，偏光分離面 85A、86A、87A係將一邊的偏光 成分（例如爲S偏光成分）朝向液晶光燈泡8R、8G、8B反 射。 液晶光燈泡8R、8G、8B係因應根據像素訊號所賦予 之驅動電壓所驅動，並以像素單位將入射之特定偏光成分 的色彩光予以調變。此時，由於液晶光燈泡8R、8G、8B 係由第1圖、第2圖所示之反射型液晶顯示元件所構成， 因此關於對比等特性及畫質，乃能夠實現良好特性。 液晶光燈泡8 R、8 G、8 B，係將調變後的各色光朝向 偏光分光鏡85、86、87反射。偏光分光鏡85、86、87， 於來自於液晶光燈泡8R、8G、8B的反射光（調變光）當 中，僅讓特定的偏光成分（例如爲P偏光成分）通過，並朝 -21 - 200820209 向合成稜鏡8 8射出。合成稜鏡8 8係通過偏光分光鏡 85、86、87之特定的偏光成分之色彩光予以合成，並朝 向投射透鏡89射出。投射透鏡89，係將從合成稜鏡88 所射出之合成光朝向螢幕8 0投射。藉此，因應由液晶光 燈泡 8R、8G、8B所調變後的光之影像，係投影於螢幕 8 0上，而進行期望的影像顯示。 如以上所述，於本實施型態之液晶投影器中，由於使 用第1圖、第2圖所示之反射型液晶顯示元件作爲液晶光 燈泡8R、8G、8B，因此可逐次地減少起因於鄰接像素間 的施加電壓差之液晶的配向不良（向錯）之產生，而抑制畫 像重現性的劣化。因此可實現高畫質且於重現性極高的畫 質下之影像顯示。 [第2實施型態] 接下來說明本發明之第2實施型態。於第1實施型態 中’係說明根據畫像資料而改變施加電壓（驅動電壓）之所 謂的類比方式’但於本實施型態中，係說明根據畫像資料 而進行 PWM(Pulse Width Modulation:脈衝寬度調變）驅 動之所謂的數位方式。 第 Π圖係顯示作爲一般的數位方式之液晶顯示元件 的驅動方法之時序圖，（A)〜（H)分別表示1色階（= 「0 0 0 0 0 0 1」的像素資料；黑階）、2色階（=「0 0 0 0 0 1 〇」的 像素資料）、4色階（=「〇 〇 0 0】〇 〇」的像素資料）、8色階（= 「0 0 0 1 0 0 0」的像素資料）、]6色階（=「〇 〇丨〇 〇 〇 〇」的像素 -22- 200820209 資料）、32色階（=「0 1 00 00」的像素資料）、64色階（= 「1 000000」的像素資料）及127色階（=「1 1 1 1丨丨丨」的像 素資料；白階）。 於此數位方式的驅動方法中，藉由對像素資料的各位 元賦予權重，可改變施加電壓於各像素1 1之期間的寬 度，而進行色階顯示。此外’係對1個圖場的時間進行 128分割，且以當中第1〜64、 64〜96、 96〜112、 112〜120、 120〜124、 124〜126、 126〜127號之分割區域的組合施加 V 1 0 0電壓或V 0電壓。因此，於本實施型態之液晶顯示元 件中，鄰接像素間的電壓比爲較大者，係對應於，對應 「〇(L ;低）」位準之施加電壓與對應「i(H ;高）」位準之 施加電壓之間的電壓比。 因此，於本實施型態中，例如第12圖（A)、（B)的時 序圖所不般，係將對應「0 (L ;低）」位準之施加電壓設定 爲較高（此時由「〇」變更爲「1 0」），且將對應「1 (Η ; 高）」位準之施加電壓設定爲較低（此時由「1 00」變更爲 「95」）。 此外，例如第1 3圖（A )、（ Β )的時序圖所示般，亦可 只變更對應「0 (L ;低）」位準之施加電壓的設定（變更爲 更高）。此時’與第1實施型態中所說明者相同，係因爲 即使設定値未改變較大，亦可容易降低電壓比之故。 再者’例如第14圖（A)、（B)的時序圖所示般，亦能 夠以使電壓的施加期間於鄰接像素1 1 A、1 1 B彼此之間更 長時間地一致之方式，將電壓的施加期間往時間軸方向移 -23- 200820209 位。此係因爲，如第1 1圖所示般，由於在以往數位方式 的驅動方法中，例如對1個圖場的時間進行1 2 8分割，且 以當中第 1 〜64、64〜96、96〜112、112〜120、120〜124、 124〜126、126〜127號之分割區域的組合施加V100電壓或 V0電壓，因此較常產生電壓的施加期間於鄰接像素彼此 之間不會一致之故。若具體說明第1 4圖，則如圖中的箭 頭P77、P78所分別顯示般，係將像素1 1B的電壓施加期 間，於每1個水平期間中，以與像素1 1 A的電壓施加期 間呈最大限度地一致之方式進行移位（係以使電壓施加期 間位於時序t53〜t54之間、及時序t55〜t56之間之方式地 往時間軸方向移位）。於如此構成時，不需如上述般變更 對應「〇(L ;低）」位準之施加電壓或對應「1 (H ;高）」位 準之施加電壓，而能夠將鄰接像素間之電壓比變大的期間 抑制於最低限度。 如上述般，於本實施型態之液晶顯示元件中，由於在 像素訊號校正部5中，亦以使對1個像素的施加電壓與對 該鄰接像素的施加電壓之間的電壓比變得更小之方式進行 逐次校正’因此可獲得與第1實施型態相同之效果。亦 即’可逐次降低起因於鄰接像素間的施加電壓差之液晶的 配向不良（向錯）之產生，而抑制畫像重現性的劣化。因 此，不論顯示影像的內容爲何，均能夠實現良好畫質的影 像顯示。 本實施型態之液晶顯示元件，與第1實施型態相同， 亦可適用於液晶投影器等之一驚顯示裝置，並且可獲得與 -24- 200820209 第1實施型態相同之效果。 [實施例] 接下來以實施例說明上述實施型態之液晶顯示元件的 具體特性。以下，於說明實施例之前，首先係以比較例說 明以往之液晶顯示元件的特性。 [比較例1 ] 以下列方式製作出比較例1之反射型液晶顯示元件的 樣本。首先，於洗淨形成有透明電極之玻璃基板、及矽基 板後，導入至蒸鍍裝置，並以蒸鍍角度爲45〜5 5°的範圍內 斜向蒸鍍Si02膜以作爲配向膜而形成。配向膜的膜厚設 定於2 5〜1 0 0 nm，且以使液晶的預傾角成爲大約3 °之方式 的進行配向控制。之後於形成有配向膜之上述兩基板間， 僅以適當數量使大約2μπι直徑的玻璃珠散佈並將兩者貼 合，將Merck公司製之介電常數異向性△ ε爲負、折射率 異向性△ η = 0 · 1 1之垂直配向液晶材料注入，藉此製作出具 有大約2 μ m的液晶層厚之反射型液晶顯示元件。於上述 矽基板上，獨立設置可用以控制驅動電壓之像素電極，這 些像素電極係由一邊爲6μιη的正方形所形成，各像素大 約以0 ·3 μιη的溝槽區隔，此外，於此表面上，形成鋁反射 膜。 於製作後，將相當於約60Hz的交流矩形波之電壓施 加於這些像素，而獲得對振幅電壓之關係。此外，係求取 -25- 200820209 表示出最大反射率之電壓V100，並將此時的透射率設定 爲T1 00。之後將反射率對T1 00爲X%時之透射率設定爲 Tx，並將此時的電壓設定爲電壓Vx。 之後使用此反射型液晶顯示元件，以第15圖（A)、（B) 所示的種種像素圖案（分別爲每2列各爲黑白之圖案以及 2 X 2像素之西洋棋盤的圖案）進行影像顯示，並於互爲鄰 接之像素1、2及像素3、4中測定反射率。此外，係求取 鄰接像素的各反射效率E(=賨際的積分反射率對各像素中 所期待的反射率之比値的平均値），以及於某一像素與鄰 接像素之間的對比C(=實際的積分反射率的比値對各像素 中所期待的反射率的比値之比値），以分別作爲第1指標 及第2指標。 第1 6圖係顯示如此求取之透射率T與反射效率E及 對比C之間的關係（於鄰接像素當中之一的校正前電壓爲 V40時）。於第16圖中，鄰接像素間的電壓比變大（此時 係隨著透射率T遠離T4 0)，反射效率E及對比C之値均 逐漸遠離1 〇〇，因此可確認出從期待値偏離之誤差逐漸增 大。 [實施例1-1、1-2] 以基本上與上述比較例1爲相同之方法及規格，製作 出反射型液晶顯示元件的樣本。惟於本實施例1 -1、1 -2 中，與上述比較例1爲不同者在於，分別如上述第1實施 型態之第6圖〜第8圖或第9圖所說明般，係以使鄰接像 -26- 200820209 素間的電壓比儘可能降低之方式地進行逐次校正，且以第 15圖（A)、（B)所示的像素圖案進行影像顯示。 第1表係顯示比較例1及實施例1 -1、1 - 2之反射效 率E及對比C的測定結果之一例（於鄰接像素當中之一的 校正前電壓爲V40時）。在此，若反射效率E爲0.70以上 且對比C爲0.60以上，則可視爲顯示影像畫像可保持實 用上極爲充分之畫質。於比較例1中，於一部分中係低於 這些値，相對於此，於實施例1 -1、1 - 2中，所有的數値 均高於這些値。因此可得知，鄰接像素間的電壓比較比較 例1還低，且顯示品質亦有所提升。此外，實施例1 -1的 若干値較實施例1 - 2還高，因此得知顯示品質可更進一步 提升。 -27- 200820209 電壓比（像素3/像素4) V95/5 0.93 1.20 0.93 1.20 0.93 ο (Ν V90/20 0.91 1.12 0.91 (Ν r-H 0.91 <Ν τ—Η V50/45 1.00 0.98 1.00 0.98 1.00 0.98 V45/50 0.98 1.00 0.98 1.00 0.98 1.00 V20/90 0.70 0.63 0.94 0.84 0.82 0.72 V5/95 0.56 0.48 0.92 0.82 0.80 0.70 電壓比（像素1/像素2) V95/5 0.93 〇 0.98 1.05 0.93 1.10 V90/20 0.95 1.08 0.97 1.05 0.96 1.08 V50/45 1.00 1.01 1.00 1.00 1.00 1.01 V45/50 i 0.98 1.00 1.00 1.00 0.98 ο V20/90 0.70 0.71 0.88 0.70 0.85 0.73 V5/9 5 0.58 I 0.53 0.85 0.70 0.85 0.68 ω Ο ω u ω U 比較例 1 實施例 1-1 實施例 1-2 -28- 200820209 [比較例2 ] 以基本上與上述比較例1爲相同之方法及規格，製作 出反射型液晶顯示元件的樣本。惟於本比較例2中，與上 述比較例1爲不同者在於，係以第1 1圖所說明之數位方 式的驅動方法，亦即以對1個圖場的時間進行1 2 8分割， 且以當中第 1〜64、 64〜96、 96〜112、 112〜120、 120〜124、 12 4〜126、126〜127號之分割區域的組合施加VI 〇〇電壓或 V0電壓之7位元數位方式的驅動方法，以第1 5圖（A)、 (B)所示的像素圖案進行影像顯示。 [實施例2-1、2-2] 以基本上與上述比較例1爲相同之方法及規格，製作 出反射型液晶顯示元件的樣本。惟於本實施例2 -1、2 - 2 中，與上述比較例2爲不同者在於，分別進行如第2實施 型態之第1 2圖或第1 4圖所說明之逐次校正’且以第1 5 圖（A)、（ B )所示的像素圖案進行影像顯示。 第2表係顯示比較例2及實施例2- 1、2-2之反射效 率E及對比C的測定結果之一例（於鄰接像素當中之一的 校正前色階爲（4 〇/1 2 8 )色階時）。與第1表相同’於比較例 2中，於一部分中係低於這些値，相對於此，於實施例2-1、2 - 2中，所有的數値均高於這些値。因此可得知’鄰 接像素間的電壓比較比較例2還低’且顯示品質亦有所提 升。此外，實施例2-2的若干値較實施例1還高’因此 得知顯示品質可更進一步提升。 -29- 200820209 電壓比(像素3/像素4) V95/5 0.89 0.33 0.91 0.70 0.93 0.72 V90/20 0.93 0.77 0.95 0.90 0.94 0.92 I V50/45 0.63 0.30 0.81 0.71 0.99 0.98 V45/50 0.62 0.25 0.81 0.65 0.99 0.98 V20/90 0.47 0.37 0.75 0.70 0.80 0.75 V5/95 1 0.28 0.26 0.71 0.71 0.76 1 0.73 電壓比(像素1/像素2) V95/5 0.93 0.48 0.94 0.75 0.94 0.77 V90/20 0.96 0.81 0.97 0.90 0.98 0.93 V50/45 0.72 0.47 0.87 0.78 1.00 0.98 V45/50 0.72 0.40 0.87 0.66 0.99 0.98 V20/90 0.59 0.51 0.79 0.77 0.84 0.82 V5/95 0.43 0.42 0.74 0.70 0.75 0.73 ω U ω U U 比較例2 實施例2-1 實施例2-2 -30- 200820209 [比較例3 ] 以基本上與上述比較例1爲相同之方法及規格，製作 出反射型液晶顯示元件的樣本。惟於本比較例3中，係以 像素驅動電壓爲不同之鄰接像素（設定爲像素A、B)彼此 之間的電壓差（=(像素B的電壓VB-像素A的電壓VA))爲 判斷指標’以使該電壓比變得更小之方式進行校正。 [實施例3 ] 同樣的’以基本上與上述比較例1爲相同之方法及規 格，製作出反射型液晶顯示元件的樣本。此外，於本實施 例3中，與上述實施例1 -1、1 - 2、2 -1、2 - 2相同，以像素 A、像素B彼此之間的電壓比（ = (VB/VA))爲判斷指標，以 使該電壓比變得更小之方式進行校正。 第1 8圖（A)係顯示，根據比較例3的測定結果之鄰接 像素彼此之間的電壓差與反射效率E之間的相關關係之一 例（於將 VA 改變爲 V1、V5、V20、V40、V60、V80、 V95、V100時）。此外，第18圖（B)係顯示，根據實施例3 的測定結果之鄰接像素彼此之間的電壓比與反射效率E之 間的相關關係之一例（於將 V A改變爲 V 1、V 5、V 2 0、 V40、V60、V80、V95、V100 時）。 從這些，第18圖（A)、（B)中可屬知，因鄰接像素之 像素驅動電壓的不同所產生之向錯而造成之反射效率E的 下降，相較於比較例3般的電壓差，乃更明確地依存於實 施例3般電壓比。因此，於決定進行校正時的閾値或優先 -31 - 200820209 順序時，相較於鄰接像素彼此之間的電壓差，若以鄰接像 素彼此之間的電壓比作爲判斷指標以選擇（決定）校正對象 的像素，則更可有效率地進行校正。此外，關於校正量， 相較於鄰接像素彼此之間的電壓差，係以使電壓比之値變 得更小之方式進行校正，因此更可有效地進行校正。 以上係以第1及第2實施型態以及這些實施型態的實 施例說明本發明，但是本發明並不限定於這些實施型態 等，可進行種種變形。 例如，於上述實施型態等當中，係說明液晶顯示部1 內的液晶爲垂直配向液晶2之情況，但除此之外，本發明 亦可適用於例如水平配向液晶、強介電性液晶、 TN(Twisted Nematic :扭轉陣列）模式的液晶OCB方式的 液晶等之種種方式的液晶模式。 此外，於上述實施型態等當中，係說明反射型的液晶 顯示元件及液晶顯示裝置之情況，但除此之外，本發明亦 可適用於例如透射型或半反射半透射型的液晶顯示元件及 液晶顯示裝置。惟於反射型時，如第2圖所示般，像素驅 動電路1 4係形成於像素電極4 2的下方，而具有像素間距 及像素間隙較透射型更爲狹窄之傾向，所以更容易產生配 向不良（向錯）。因此，尤其於適用於反射型時，該效果更 大。 此外，於本發明中，例如第17圖（A)、（B)所示般， 較理想爲藉由圖框反轉驅動或圖場反轉驅動來進行液晶顯 示元件的驅動’此圖框反轉驅動或圖場反轉驅動，係於每 -32- 200820209 個圖框或圖場中，以正方向（於第17圖（A)中，將各像素 1 1中之施加方向模式性顯示爲「+」）及負方向（於第1 7圖 (B)中，將各像素1 1中之施加方向模式性顯示爲「-」）將 像素驅動電壓的施加方向予以反轉。此係由於在進行此驅 動時，更可減少配向不良（向錯）的產生之故。 再者，於上述實施型態等當中，係說明以液晶顯示元 件作爲光燈泡而使用之反射型液晶投影器（液晶投影器 8)，作爲使用有本發明的液晶顯示元件之液晶顯示裝置的 例子，但本發明之液晶顯示元件亦可適用於 T V ( T e 1 e v i s i ο η)裝置、PDA(Personal Digital Assistants ： 個人數位助理）、或行動電話等。第1 9圖係顯示將上述實 施型態中所說明之液晶顯示元件（液晶顯示部1及像素訊 號校正部5)適用於TV裝置時之電路構成的一例。此TV 裝置9例如具備：將類比廣播波訊號予以受訊並進行解調 變，且分別輸出畫像訊號及聲音訊號作爲基頻訊號之類比 調諧器9 1 A ;將數位廣播波訊號予以受訊並進行解調變， 且作爲 MPEG-TS資料串流訊號而輸出之數位調諧器 91B ;輸入外部輸入資料D1(MPEG-TS資料串流訊號等）之 選擇器9 1 C ;將從數位調諧器9 1 B或選擇器9 1 C所輸出之 MPEG-TS資料串流訊號予以解調變，且作爲數位元件訊 號而輸出之 MPEG(Moving Picture Experts Group:數位影 像壓縮格式）解碼器92B ;將畫像的基頻訊號予以解調變 並進行A/D(數位/類比）轉換，且作爲數位元件訊號而輸出 之畫像訊號轉換電路92A ;對於從類比調諧器9 1 A所輸出 •33- 200820209 之聲音的基頻訊號進行A/D轉換且作爲數位聲音訊號而 輸出之聲音訊號A/D(Analog/Digital)電路93A;對於從聲 音訊號A/D電路93A或之後所述之聲音·畫像訊號解碼 器98D所輸出之數位聲音訊號，進行例如音平調整、合 成或立體處理等之特定的聲音訊號處理之聲音訊號處理電 路93B;以使聲音訊號成爲期望的音量之方式地進行增幅 之聲音訊號增幅電路93 C ;將增幅後的聲音訊號輸出至外 部之喇叭96 ;對於從畫像訊號轉換電路92 A或MPEG解 碼器92B所輸出之數位聲音訊號，進行例如對比調整、色 彩調整或明亮度調整等之特定的畫像訊號處理之畫像訊號 處理電路94B ;上述實施型態中所說明之像素訊號校正部 5及液晶顯示部1 ;將來自於遙控器之搖控訊號S 1予以受 訊之遙控感光部97A ;例如經由有線區域網路（LAN : Local Area Network)等的外部網路（圖中未顯示），輸入外 部輸入資料D2(聲音訊號及畫像訊號）之網路端子部97B ; 作爲從網路端子部97B所輸入至聲音訊號及畫像訊號的介 面部分之網路I/F(介面）97C ;控制TV裝置9全體的動作 之 CPU(Central Processing Unit:中央處理單元）98A;儲 存有由CPU98A所使用之特定的軟體等之非揮發性的記憶 邰之快閃R Ο M (R e a d Ο η 1 y M e m 〇 r y :唯讀記憶體）9 8 B ;作 爲對應於CPU98A的執行區域之記憶部之SDRAM (Synchronous Dynamic Random Access Memory ：同步動態 隨機存取記憶體）9 8 C ;以及將經由網路端子部9 7 B及網路 I/F97C從外部所輸入之影像訊號及聲音訊號予以解調 - 34- 200820209 變，並分別作爲數位元件訊號及數位聲音訊號而輸出之聲 音·畫像訊號解碼器 98D。此外，網路 I/F97C、 CPU98A、快閃 ROM98B、SDRAM98C及聲音·畫像訊號 解碼器 98D ，例如藉由 PCI(Peripheral ComponentVinB/VinA=1 00/40 becomes a smaller v〇utB/V〇utA = 90/45 to determine the amount of correction. Further, for example, when V i η A = 4 0 and V i η B =0, the correction amount determining unit 54 is corrected by the correction table 71 as shown in Fig. 6 (Β) and In the case of arrows Ρ73 and Ρ74 in Fig. 7 (Β), the correction amounts of the pixel data V in A and V i η B are successively determined so that VoutA = 60 and VoutB = 5. That is, the correction amount is determined in such a manner that the ratio of the pixel data is changed from VinB/VinA = 40/0 to a small VoutB/VoutA = 60/5. In addition, when the pixel data of such a side is black level (or near the black level), it is preferable to preferentially increase the pixel data of the black level, that is, increase the applied voltage of the black display pixel. Thereby, even if there is no large change in the pixel data, the effect of reducing the ratio of the pixel data can be greatly improved (in this case, it is reduced from infinity (〇〇) to 15). Further, as shown in Fig. 8, when V i η A = 4 0 and V i η B = 0, the correction amount determining unit 54 can sequentially determine the pixel data so that VoutA = 40 and VoutB = 5 The amount of correction for VinA and VinB. In this way, when the adjacent pixels sequentially arranged from the white display pixel to the black display pixel in the pretilt direction are selectively (preferred) corrected, the ratio of the pixel data is from VinB/VinA = 40/. 0 becomes smaller VoutB/VoutA = 40/5, which is ideal. In this manner, the correction amount is determined by the correction amount determining unit 5, and the correction amount of the pixel data is determined -15-200820209 times, and the correction amount is output to the error correction unit 55. Returning to the description of Fig. 5, the error correction unit 5 adds the correction amount determined by the correction amount determining unit 54 to the pixel data stored in the storage unit 52, thereby generating the corrected image. The output image data DoUt of the signal is output to the data driver 12 in the liquid crystal display unit i. Next, the action of the liquid crystal display element of this embodiment will be described. In the reflective liquid crystal display device, as shown in FIG. 2, the incident light L1 incident from the opposite substrate 30 side and passing through the vertical alignment liquid crystal 2 is reflected by the reflection function of the reflective pixel electrode 42. . The light L1 reflected by the reflective pixel electrode 42 is emitted perpendicularly to the liquid crystal 2 and the counter substrate 30 in the opposite direction to the incident direction. At this time, the vertical alignment liquid crystal 2 changes the optical characteristics due to the potential difference between the electrodes facing the direction, and modulates the passing light L1. By the optical modulation, the gradation expression can be realized, and the modulated light L2 is used for applying the voltage of the vertical alignment liquid crystal 2 by the image display, and the pixel driving circuit 1 shown in FIG. 1 is used. 4 and proceed. The data driver 1 2 supplies the image signal to the data line 12A in response to the output image signal D out input from the pixel signal correcting unit 5 via the signal line 15. The scan driver 13 is in a specific timing, and sequentially supplies scan signals to the respective scan lines 1 3 A. Thereby, the pixel 'scanned by the scanning signal from the scanning line 13 A and applied with the portion of the image signal from the data line 1 2 A is selectively driven. -16- 200820209 Here, in the pixel signal correcting unit 5 shown in FIG. 5, for each pixel 11' in the display area, based on the input image signal Din from the outside, for one pixel. The pixel data of each pixel 11 is sequentially corrected so that the voltage ratio between the applied voltage (driving voltage) and the applied voltage to the adjacent pixels becomes smaller. Specifically, the pixel data after the gamma correction by the gamma correction unit 51 is recorded to the memory unit 5 2 ′ and the pixel data of one pixel is compared by the comparison unit 53 based on the stored pixel data. And the pixel data of the adjacent pixel. Then, based on the comparison result, the correction amount determining unit 54 determines the voltage between the applied voltage to one pixel and the applied voltage to the adjacent pixel using, for example, the correction tables 7 and 713 shown in FIG. When the specific threshold 比较 is still large, for example, as shown in FIGS. 6 to 8 , the voltage ratio is made smaller, and the display gradation or gradation ratio of each pixel 11 is close to the desired 値. The pixel data of each pixel is corrected successively. Then, based on the corrected pixel data (output image signal Dout), the display driving is performed in the liquid crystal display unit 1. As described above, in the liquid crystal display device of the present embodiment, in the pixel signal correcting portion 5, the voltage ratio between the applied voltage to one pixel and the applied voltage to the adjacent pixel is made smaller. In this manner, the pixel data (input image signal Din) of each pixel 11 is sequentially corrected, and the display data of the liquid crystal display unit 1 is performed based on the corrected pixel data (output image signal D 〇ut ). The occurrence of alignment failure (discognition) of the liquid crystal due to the applied voltage difference between adjacent pixels is reduced, and deterioration of image reproducibility is suppressed. Therefore, regardless of the content of the image displayed -17-200820209 (after inputting the image signal Din), it is possible to achieve good image quality. In addition, the correction amount determining unit 54 in the pixel signal correcting unit 5 determines the amount of correction using, for example, a specific correction table shown in FIG. 6. Therefore, it is only necessary to select a predetermined correction amount and perform the processing at a simple and high speed. Correction. In addition, when the pixel data of one side is black level (or near the black level), after the pixel data of the black level is preferentially increased, that is, when the applied voltage of the black display pixel is increased, even if the pixel data is not A large change is made, and the comparison of pixel data is also effectively reduced. Therefore, it is easier to eliminate misalignment of the liquid crystal. Further, when the adjacent pixels sequentially arranged from the white display pixel to the black display pixel in the pretilt direction along the vertical alignment liquid crystal 2 are selectively (preferred) corrected, the alignment of the liquid crystal is easily generated due to the alignment. The defective part is corrected so that the pixel signals can be corrected more efficiently. Further, since the correction is performed by determining the priority order of the correction, it is possible to avoid the occurrence of omission in the correction processing. The pretilt direction of the vertical alignment liquid crystal 2 is, for example, a diagonal direction of a pixel (in a direction in which the pixel is square, which is 45 degrees in the horizontal direction or the vertical direction), and is configured to represent liquid crystal molecules along the surface. The direction of the horizontal or vertical component of the vector of the pretilt direction selectively (preferredly) corrects the pair of adjacent pixels that migrate from the state representing the white display pixel to the state representing the black display pixel. Specifically, the comparison unit 53 can detect that each pixel is a white display pixel or a black display pixel. Then, when the alignment film is formed on the pixel electrode by tilting the liquid crystal molecules from the lower right side -18-200820209 toward the upper left side, the adjacent pixel seal is detected to be black on the left side when comparing p|5 5 3 When there is no pixel and the white pixels are arranged on the right side and are sequentially arranged, the correction amount determining unit 54 is selectively (preferred) corrected. Further, for example, as shown in the timing chart of FIG. 9, it is for a specific plurality of frame periods (or three horizontal periods (one horizontal period = 1H) up to the timing t10 to t13 of the plurality of field periods) The time integral of the reflectance of each of the pixels 1 1 is used as a determination index, and the pixel data is sequentially corrected as shown by arrows P 7 5 and P 7 6 in the figure, for example. In such a configuration, when the pixel signal does not change during the majority of the frame period, the deterioration of the image quality reproducibility due to the occurrence of the disclination can be effectively suppressed. <Configuration of Liquid Crystal Display Device> Next, an example of a liquid crystal display device using a liquid crystal display element having the configuration shown in Fig. 1 will be described. Here, as shown in Fig. 1, an example of a reflective liquid crystal projector (liquid crystal projector 8) using a reflective liquid crystal display element as a light bulb will be described. The liquid crystal projector 8 is a so-called three-piece type in which a liquid crystal light bulb 8R, 8G, and 8B are used for displaying three colors of red, blue, and green colors. This reflective liquid crystal projector is provided with a light source 8 1 along the optical axis 0L; a dichroic beam splitter 82, 83; and a total reflection mirror 84. Further, the liquid crystal projector 8 is provided with polarizing beamsplitters 85, 86, 87; a composite lens 88; a projection lens 89; and a screen 80. The light source 81 emits white light including red light (R), -19-200820209 blue light (B), and green light (G) required for color image display, such as a halogen lamp, a metal halide lamp, a xenon lamp, or the like. Composition. The dichroic beam splitter 82 has a function of separating light from the light source 8 1 into blue light and light of other colors. The dichroic beam splitter 813 has a function of separating the light passing through the dichroic beam splitter 82 into red light and green light. The total reflection mirror 84 reflects the blue light separated by the dichroic beam splitter 82 toward the polarization beam splitter 81. The polarizing beamsplitters 85, 86, and 87 are provided along the optical paths of red light, green light, and blue light, respectively. Each of the polarization beam splitters 85, 86, and 87 has polarization separation surfaces 85A, 86A, and 87A, and the polarization separation surfaces 85A, 86A, and 87A have two polarization components that are orthogonal to each other. Features. The polarization separation surfaces 85 A, 86A, and 87A transmit a polarization component (for example, an S polarization component) on one side and transmit a polarization component (for example, a P polarization component) on the other side. The liquid crystal light bulbs 8R, 8G, and 8B are composed of the reflective liquid crystal display elements (Fig. 1 and Fig. 2) having the above configuration. The color light of a specific polarized component (for example, an S-polarized component) separated by the polarization separation surfaces 85A, 86A, and 87A of the polarization beam splitters 85, 86, and 87 is incident on the liquid crystal light bulbs 8 R, 8 G, and 8 B. The liquid crystal light bulbs 8 R, 8 G, and 8 B have a function of modulating the incident light according to the driving voltage given by the pixel signal, and directing the modulated light toward the polarizing beamsplitters 85, 86, 8 7 The function of reflection. The synthetic 稜鏡88 system has color light which is emitted from the liquid crystal light bulbs 8R, 8G, and 8B and which is polarized by the polarizing beamsplitters 85, 86, and 87 to a specific polarization of -20 to 200820209 (for example, a p-polarized component). The function to be synthesized. The projection lens 89 has a function of projecting a projection light that is emitted from the composite pupil 88 toward the screen 8 . In the reflective liquid crystal projector 8 configured as described above, the white light emitted from the light source 81 is first separated into blue light and other colors by the function of the dichroic beam splitter 8 (red light and green light). ). Among them, the blue light is reflected toward the polarization beam splitter 87 by the function of the total reflection mirror 84. On the other hand, the red light and the green light are further separated into red light and green light by the function of the dichroic beam splitter 83. The separated red light and green light are incident on the polarization beam splitters 85 and 86, respectively. The polarizing beamsplitters 85, 86, and 87 separate the incident light beams into two polarized components which are orthogonal to each other in the polarization separating surfaces 85A, 86A, and 8A. At this time, the polarization separation surfaces 85A, 86A, and 87A reflect the polarized component (for example, the S-polarized component) on one side toward the liquid crystal light bulbs 8R, 8G, and 8B. The liquid crystal light bulbs 8R, 8G, and 8B are driven by the driving voltage given by the pixel signals, and the color light of the specific polarizing component incident is modulated in units of pixels. In this case, since the liquid crystal light bulbs 8R, 8G, and 8B are composed of the reflective liquid crystal display elements shown in FIGS. 1 and 2, good characteristics can be realized with respect to characteristics such as contrast and image quality. The liquid crystal light bulbs 8 R, 8 G, and 8 B reflect the modulated color lights toward the polarization beam splitters 85, 86, and 87. The polarizing beamsplitters 85, 86, and 87 emit only a specific polarizing component (for example, a P-polarizing component) among the reflected light (modulated light) from the liquid crystal light bulbs 8R, 8G, and 8B, and are directed toward - 21 - 200820209 Shot to the synthetic 稜鏡8 8 . The synthetic 稜鏡8 8 is synthesized by the color light of the specific polarizing components of the polarizing beamsplitters 85, 86, 87, and is emitted toward the projection lens 89. The projection lens 89 projects the synthesized light emitted from the composite pupil 88 toward the screen 80. Thereby, the image of the light modulated by the liquid crystal light bulbs 8R, 8G, and 8B is projected on the screen 80 to display a desired image. As described above, in the liquid crystal projector of the present embodiment, since the reflective liquid crystal display elements shown in FIGS. 1 and 2 are used as the liquid crystal light bulbs 8R, 8G, and 8B, the cause can be reduced successively. The occurrence of alignment failure (dislocation) of the liquid crystal with a voltage difference between adjacent pixels is suppressed, and deterioration of image reproducibility is suppressed. Therefore, it is possible to realize image display with high image quality and high reproducibility. [Second embodiment] Next, a second embodiment of the present invention will be described. In the first embodiment, a so-called analog method of changing the applied voltage (driving voltage) according to the image data is described. However, in the present embodiment, PWM (Pulse Width Modulation) is performed based on the image data. Modulation) The so-called digital way of driving. The second diagram shows a timing chart of a driving method of a liquid crystal display element as a general digital method, and (A) to (H) respectively represent pixel data of one color gradation (= "0 0 0 0 0 0 1"; black level ), 2 levels (= "0 0 0 0 1 〇" pixel data), 4 levels (= "〇〇0 0 〇〇" pixel data), 8 levels (= "0 0 0 1 0 0 0" pixel data),] 6 levels (= "〇〇丨〇〇〇〇" pixels-22- 200820209 data), 32 levels (= "0 1 00 00" pixel data), 64 Level (= "1,000,000" pixel data) and 127 levels (= "1 1 1 1丨丨丨" pixel data; white level). In the driving method of the digital method, by giving weight to the pixels of the pixel data, the width of the period during which the voltage is applied to each of the pixels 1 1 can be changed, and the gradation display can be performed. In addition, the time division of one field is 128, and the divided areas are the first to the first, the first, the first, the first, the second, the first, the second, the first, the second, the second, the first, the, the, the, the, the, the, the, the, the, the, the A voltage of V 1 0 0 or a voltage of V 0 is applied in combination. Therefore, in the liquid crystal display device of the present embodiment, the voltage ratio between adjacent pixels is larger, corresponding to the applied voltage corresponding to the "〇 (L; low)" level and the corresponding "i (H; high) ) The voltage ratio between the applied voltages. Therefore, in the present embodiment, for example, in the timing charts of FIGS. 12(A) and (B), the applied voltage corresponding to the "0 (L; low)" level is set to be high (at this time). Changed from "〇" to "1 0"), and the applied voltage corresponding to the "1 (Η ; 高)" level is set to be lower (this time is changed from "1 00" to "95"). Further, for example, as shown in the timing chart of Figs. 3(A) and ((), only the setting of the applied voltage corresponding to the "0 (L; low)" level can be changed (changed to be higher). At this time, the same as the one described in the first embodiment, since the voltage ratio can be easily lowered even if the setting is not changed largely. Further, for example, as shown in the timing charts of FIGS. 14(A) and (B), the application period of the voltage can be made to match the adjacent pixels 1 1 A and 1 1 B for a longer period of time. The period during which the voltage is applied is shifted in the direction of the time axis by -23-200820209 bits. This is because, as shown in FIG. 1 , in the conventional digital driving method, for example, the time of one field is divided by 1 28, and the first to 64, 64 to 96, and 96 are included. The combination of the divided regions of -112, 112 to 120, 120 to 124, 124 to 126, and 126 to 127 applies the V100 voltage or the V0 voltage. Therefore, the application period of the more frequently generated voltage does not coincide with the adjacent pixels. . Specifically, in the case of Fig. 14, the voltage application period of the pixel 1 1B is applied during the voltage application period of the pixel 1 1B, and the voltage application period with the pixel 1 1 A is applied during each horizontal period. The shift is performed in such a manner that the voltage application period is shifted in the time axis direction so as to be between the timings t53 and t54 and between the timings t55 and t56. In such a configuration, it is not necessary to change the applied voltage corresponding to the "〇 (L; low)" level or the applied voltage corresponding to the "1 (H; high)" level as described above, and the voltage ratio between adjacent pixels can be changed. The period of becoming larger is suppressed to a minimum. As described above, in the liquid crystal display device of the present embodiment, in the pixel signal correcting unit 5, the voltage ratio between the applied voltage to one pixel and the applied voltage to the adjacent pixel is further increased. The correction is performed in a small manner, so that the same effect as in the first embodiment can be obtained. In other words, the occurrence of alignment failure (dislocation) of the liquid crystal due to the applied voltage difference between the adjacent pixels can be sequentially reduced, and the deterioration of the image reproducibility can be suppressed. Therefore, regardless of the content of the displayed image, an image display with good image quality can be realized. The liquid crystal display device of the present embodiment can be applied to a display device such as a liquid crystal projector as in the first embodiment, and the same effects as those of the first embodiment of the present invention can be obtained. [Embodiment] Next, specific characteristics of the liquid crystal display element of the above embodiment will be described by way of examples. Hereinafter, before describing the embodiment, the characteristics of the conventional liquid crystal display element will be described first by way of a comparative example. [Comparative Example 1] A sample of the reflective liquid crystal display device of Comparative Example 1 was produced in the following manner. First, the glass substrate and the ruthenium substrate on which the transparent electrode is formed are washed, and then introduced into a vapor deposition device, and an SiO 2 film is vapor-deposited in a vapor deposition angle of 45 to 5 5 to form an alignment film. . The film thickness of the alignment film is set to 25 to 100 nm, and the alignment control is performed so that the pretilt angle of the liquid crystal becomes about 3 °. Then, between the two substrates on which the alignment film is formed, only about 2 μm diameter of the glass beads are dispersed in an appropriate amount and the two are bonded together, and the dielectric anisotropy Δ ε made by Merck is negative and the refractive index is different. A vertical alignment liquid crystal material having a Δ η = 0 · 1 1 was implanted, whereby a reflective liquid crystal display element having a liquid crystal layer thickness of about 2 μm was produced. On the above-mentioned germanium substrate, pixel electrodes which can be used to control the driving voltage are separately provided, and the pixel electrodes are formed by squares having a side of 6 μm, and each pixel is partitioned by a groove of 0·3 μm, and further, on the surface Forming an aluminum reflective film. After the fabrication, a voltage corresponding to an alternating rectangular wave of about 60 Hz is applied to these pixels to obtain a relationship with the amplitude voltage. In addition, the voltage V100 of the maximum reflectance is expressed as -25-200820209, and the transmittance at this time is set to T1 00. Then, the transmittance when the reflectance is T% 00 is X% is set to Tx, and the voltage at this time is set to the voltage Vx. Then, using this reflective liquid crystal display element, images are imaged in various pixel patterns (a pattern of black and white in each of two columns and a pattern of a chessboard of 2 by 2 pixels) in each of the two rows shown in FIGS. 15(A) and (B). The reflectance is measured and displayed in the adjacent pixels 1, 2 and pixels 3, 4. In addition, the reflection efficiency E of the adjacent pixels (the average 値 of the ratio of the integral reflectance of the adjacent pixels to the expected reflectance in each pixel) and the contrast between a certain pixel and the adjacent pixel are obtained. (= ratio 实际 of the actual integral reflectance ratio 値 to the expected reflectance in each pixel) as the first index and the second index, respectively. Fig. 16 shows the relationship between the transmittance T thus obtained and the reflection efficiency E and the contrast C (when the voltage before correction of one of the adjacent pixels is V40). In Fig. 16, the voltage ratio between adjacent pixels becomes larger (in this case, the transmittance T is far from T4 0), and the reflection efficiency E and the contrast C are gradually separated from 1 〇〇, so that it is confirmed from the expectation. The error of the deviation gradually increases. [Examples 1-1 and 1-2] A sample of a reflective liquid crystal display element was produced in substantially the same manner and specifications as in Comparative Example 1. However, in the first embodiment of the first embodiment, the first embodiment and the first embodiment are different from the above-described first embodiment, as described in the sixth embodiment to the eighth embodiment or the ninth embodiment of the first embodiment. The voltage ratio between the adjacent pixels -26-200820209 is sequentially corrected as much as possible, and the image display is performed in the pixel pattern shown in Figs. 15(A) and (B). The first table shows an example of the measurement results of the reflection efficiency E and the comparison C of Comparative Example 1 and Examples 1-1 and 1-2 (when the voltage before correction is one of the adjacent pixels is V40). Here, when the reflection efficiency E is 0.70 or more and the contrast C is 0.60 or more, it can be considered that the image of the display image can be kept extremely excellent in image quality. In Comparative Example 1, in some cases, it was lower than these enthalpies, whereas in Examples 1-1 and 1-2, all the numbers were higher than these enthalpies. Therefore, it can be seen that the voltage between adjacent pixels is lower than that of Comparative Example 1, and the display quality is also improved. Further, the number of 値 of the embodiment 1-1 is higher than that of the embodiment 1-2, so that the display quality can be further improved. -27- 200820209 Voltage ratio (pixel 3/pixel 4) V95/5 0.93 1.20 0.93 1.20 0.93 ο (Ν V90/20 0.91 1.12 0.91 (Ν rH 0.91 <Ν τ—Η V50/45 1.00 0.98 1.00 0.98 1.00 0.98 V45 /50 0.98 1.00 0.98 1.00 0.98 1.00 V20/90 0.70 0.63 0.94 0.84 0.82 0.72 V5/95 0.56 0.48 0.92 0.82 0.80 0.70 Voltage ratio (pixel 1 / pixel 2) V95/5 0.93 〇0.98 1.05 0.93 1.10 V90/20 0.95 1.08 0.97 1.05 0.96 1.08 V50/45 1.00 1.01 1.00 1.00 1.00 1.01 V45/50 i 0.98 1.00 1.00 1.00 0.98 ο V20/90 0.70 0.71 0.88 0.70 0.85 0.73 V5/9 5 0.58 I 0.53 0.85 0.70 0.85 0.68 ω Ο ω u ω U Comparative example 1 Example 1-1 Example 1-2 -28-200820209 [Comparative Example 2] A sample of a reflective liquid crystal display device was produced in substantially the same manner and specifications as in Comparative Example 1, except that this comparative example was used. In the second embodiment, the difference from the above-described comparative example 1 is that the digital method described in the first embodiment is used, that is, the time of one field is divided by 1 28, and the first one is 64, 64~96, 96~112, 112~120, 120~124, 12 4~126 In the combination of the divided areas of 126 to 127, a driving method of applying a VI 〇〇 voltage or a V0 voltage to a 7-bit digit type is performed, and image display is performed by the pixel pattern shown in FIGS. 15(A) and (B). Examples 2-1 and 2-2] Samples of a reflective liquid crystal display device were produced in substantially the same manner and specifications as in Comparative Example 1. However, in the present embodiment 2 -1, 2 - 2, The second comparative example described above is different in that the pixel shown in the first embodiment (Fig. 1 2 or Fig. 14 is successively corrected) and the pixels shown in Fig. 15 (A) and (B) are respectively performed. The pattern is displayed as an image. The second table shows an example of the measurement results of the reflection efficiency E and the comparison C of Comparative Example 2 and Examples 2 - 1 and 2-2 (the pre-correction gradation of one of the adjacent pixels is (4) 〇/1 2 8) When the gradation is). It is the same as the first table. In Comparative Example 2, it is lower than the enthalpy in a part. In contrast, in Examples 2-1 and 2-2, all the numbers are higher than these enthalpies. Therefore, it can be seen that the voltage between the adjacent pixels is lower than that of Comparative Example 2, and the display quality is also improved. Further, several 値 of the embodiment 2-2 are higher than that of the embodiment 1 so that the display quality can be further improved. -29- 200820209 Voltage ratio (pixel 3/pixel 4) V95/5 0.89 0.33 0.91 0.70 0.93 0.72 V90/20 0.93 0.77 0.95 0.90 0.94 0.92 I V50/45 0.63 0.30 0.81 0.71 0.99 0.98 V45/50 0.62 0.25 0.81 0.65 0.99 0.98 V20/90 0.47 0.37 0.75 0.70 0.80 0.75 V5/95 1 0.28 0.26 0.71 0.71 0.76 1 0.73 Voltage ratio (pixel 1 / pixel 2) V95/5 0.93 0.48 0.94 0.75 0.94 0.77 V90/20 0.96 0.81 0.97 0.90 0.98 0.93 V50/45 0.72 0.47 0.87 0.78 1.00 0.98 V45/50 0.72 0.40 0.87 0.66 0.99 0.98 V20/90 0.59 0.51 0.79 0.77 0.84 0.82 V5/95 0.43 0.42 0.74 0.70 0.75 0.73 ω U ω UU Comparative Example 2 Example 2-1 Example 2-2 -30-200820209 [Comparative Example 3] A sample of a reflective liquid crystal display device was produced in substantially the same manner and specifications as in Comparative Example 1. However, in Comparative Example 3, the voltage difference between the adjacent pixels (set to the pixels A and B) having different pixel driving voltages is determined (= (voltage of pixel B VB - voltage VA of pixel A)) The indicator 'corrects in such a way that the voltage ratio becomes smaller. [Example 3] In the same manner, a sample of a reflective liquid crystal display element was produced in substantially the same manner and in the same manner as in Comparative Example 1 described above. Further, in the third embodiment, the voltage ratio between the pixel A and the pixel B (= (VB/VA)) is the same as in the above-described first embodiment 1-1, 1-2, 2-1, 2-1. In order to judge the index, correction is performed in such a manner that the voltage ratio becomes smaller. Fig. 18(A) shows an example of the correlation between the voltage difference between adjacent pixels and the reflection efficiency E according to the measurement result of Comparative Example 3 (changing VA to V1, V5, V20, V40) , V60, V80, V95, V100). Further, Fig. 18(B) shows an example of the correlation between the voltage ratio between adjacent pixels and the reflection efficiency E according to the measurement result of Embodiment 3 (in the case of changing VA to V1, V5, V 2 0, V40, V60, V80, V95, V100). From these, it can be seen from Fig. 18 (A) and (B) that the reflection efficiency E due to the disclination of the pixel driving voltage of the adjacent pixel is lowered, and the voltage is higher than that of the comparative example 3. The difference is more clearly dependent on the voltage ratio of the third embodiment. Therefore, when determining the threshold 进行 or the priority -31 - 200820209 sequence in the correction, the voltage difference between the adjacent pixels is used as the determination index to select (determine) the correction target. The pixels are more efficiently corrected. Further, with respect to the correction amount, the correction is performed in such a manner that the voltage difference between the adjacent pixels is made smaller, so that the correction can be performed more effectively. The present invention has been described above with reference to the first and second embodiments and the embodiments thereof. However, the present invention is not limited to these embodiments and can be variously modified. For example, in the above-described embodiment, the liquid crystal in the liquid crystal display unit 1 is a case where the liquid crystal 2 is vertically aligned. However, the present invention is also applicable to, for example, a horizontal alignment liquid crystal, a ferroelectric liquid crystal, or the like. A liquid crystal mode of various modes such as liquid crystal OCB liquid crystal of TN (Twisted Nematic) mode. Further, in the above-described embodiment and the like, a case of a reflective liquid crystal display device and a liquid crystal display device will be described, but the present invention is also applicable to, for example, a transmissive or semi-reflective semi-transmissive liquid crystal display device. And a liquid crystal display device. However, in the case of the reflection type, as shown in FIG. 2, the pixel drive circuit 14 is formed under the pixel electrode 42, and the pixel pitch and the pixel gap tend to be narrower than the transmissive type, so that alignment is more likely to occur. Bad (deviation). Therefore, this effect is more effective especially when applied to a reflective type. Further, in the present invention, as shown in Fig. 17 (A) and (B), it is preferable to drive the liquid crystal display element by frame inversion driving or field inversion driving. Rotary drive or field reversal drive, in every -32-200820209 frames or fields, in the positive direction (in Figure 17 (A), the direction of application in each pixel 1 1 is schematically shown as In the "+") and the negative direction (in the case of Fig. 17 (B), the application direction of each pixel 1 is schematically shown as "-"), the direction in which the pixel driving voltage is applied is reversed. This is because the occurrence of misalignment (dislocation) is reduced when this drive is performed. In the above-described embodiment, a reflective liquid crystal projector (liquid crystal projector 8) using a liquid crystal display element as a light bulb is described as an example of a liquid crystal display device using the liquid crystal display element of the present invention. However, the liquid crystal display element of the present invention can also be applied to a TV (T e 1 evisi ο η) device, a PDA (Personal Digital Assistants), a mobile phone, or the like. Fig. 19 is a view showing an example of a circuit configuration when the liquid crystal display element (the liquid crystal display unit 1 and the pixel signal correcting unit 5) described in the above embodiment is applied to a TV device. For example, the TV device 9 includes: an analog analog tuner 9 1 A that receives an analog broadcast wave signal and performs demodulation, and outputs an image signal and an audio signal as a baseband signal; and the digital broadcast wave signal is received. A digital tuner 91B that performs demodulation and is output as an MPEG-TS data stream signal; a selector 9 1 C that inputs an external input data D1 (MPEG-TS data stream signal, etc.); a digital tuner 9 1 B or the MPEG-TS data stream signal outputted by the selector 9 1 C is demodulated, and the MPEG (Moving Picture Experts Group) decoder 92B is output as a digital component signal; The fundamental signal is demodulated and subjected to A/D (digital/analog) conversion, and the image signal conversion circuit 92A is output as a digital component signal; for the sound output from the analog tuner 9 1 A • 33-200820209 The audio signal A/D (Analog/Digital) circuit 93A that is A/D-converted and output as a digital audio signal; the sound/image signal decoder 98D for the slave audio signal A/D circuit 93A or later The output digital signal, the audio signal processing circuit 93B for performing specific audio signal processing such as level adjustment, synthesis or stereo processing; and the audio signal amplifying circuit 93 for amplifying the audio signal to a desired volume C; outputting the amplified audio signal to the external speaker 96; for the digital audio signal output from the image signal conversion circuit 92 A or the MPEG decoder 92B, for example, specific adjustment such as contrast adjustment, color adjustment or brightness adjustment The image signal processing circuit 94B for image signal processing; the pixel signal correcting unit 5 and the liquid crystal display unit 1 described in the above embodiment; the remote control light receiving portion 97A that receives the remote control signal S 1 from the remote controller; for example A network terminal portion 97B that inputs an external input data D2 (audio signal and image signal) via an external network (not shown) such as a LAN (Local Area Network); as a slave network terminal portion 97B Network I/F (Interface) 97C input to the interface portion of the audio signal and the image signal; CPU for controlling the operation of the entire TV device 9 (Cent Ral Processing Unit: 98A; flash memory R ad M (R ead Ο η 1 y M em 〇ry: read-only memory) storing non-volatile memory of a specific software or the like used by the CPU 98A 9 8 B ; SDRAM (Synchronous Dynamic Random Access Memory) 9 8 C corresponding to the memory portion of the execution area of the CPU 98A; and via the network terminal portion 9 7 B and the network I The /F97C demodulates the video signal and audio signal input from the outside - 34-200820209, and outputs the sound/image signal decoder 98D as a digital component signal and a digital audio signal. In addition, network I/F97C, CPU98A, flash ROM98B, SDRAM98C, and audio/picture signal decoder 98D, for example, by PCI (Peripheral Component)
Interconnect :周邊零件連接介面）匯流排等之內部匯流排 B 1而互爲共通連接。於以如此構成所形成之TV裝置9 中，亦可使用上述實施型態中所說明之液晶顯示元件，因 此可藉由與上述實施型態中相同之作用，而實現高對比及 良好畫質下的影像顯示。 【圖式簡單說明】 第1圖係顯示本發明的第1實施型態之液晶顯示元件 的構成之說明圖。 第2圖係顯示第1圖所示之液晶顯示部的構成之剖面 圖。 第3圖係顯示用以說明於以往的液晶顯示元件中所產 生之配向不良之剖面圖。 第4圖係顯示接著第3圖之用以說明配向不良之剖面 圖。 第5圖係顯示第1圖所示之畫像訊號校正部的詳細構 成之功能方塊圖。 第6圖係顯示用以說明校正表之圖式。 第7圖係顯示用以說明第1實施型態之畫像訊號校正 功能之圖式。 -35- 200820209 第8圖係顯示用以說明第1實施型態的變形例之畫像 訊號校正功能之圖式。 第9圖係顯示用以說明第1實施型態的變形例之畫像 訊號校正功能之圖式。 第1 0圖係顯示使用第1圖所示的液晶顯示元件所構 成之液晶顯示裝置的一例之構成圖。 第1 1圖係顯示用以說明依據數位方式之液晶顯示元 件的驅動方法之時序圖。 第1 2圖係顯示用以說明第2實施型態之畫像訊號校 正功能之圖式。 第1 3圖係顯示用以說明第2實施型態的變形例之畫 像訊號校正功能之圖式。 第1 4圖係顯示用以說明第2實施型態的變形例之畫 像訊號校正功能之圖式。 第1 5圖係顯示於實施例及比較例中所使用之液晶顯 示元件的像素圖案之說明圖。 第1 6圖係顯示比較例之液晶顯示元件的透射率與像 素的反射效率及對比之間的關係之特性圖。 第1 7圖係顯示用以說明本發明的變形例之畫像訊號 校正功能之圖式。 第1 8圖係顯示用以比較說明比較例3及實施例3的 反射效率之特性圖。 第1 9圖係顯示使用本發明的液晶顯示元件所構成之 液晶顯示裝置的其他例子之構成圖。 -36- 200820209 【主要元件符號說明】 1 =液晶顯示部 1 0 :顯示區域 1 1 :像素 1 2 :資料驅動器 12A :資料線 1 3 :掃描驅動器 1 3 A :掃描線 1 4 :像素驅動電路 1 5 :訊號線 2 :液晶（垂直配向液晶） 3 〇 :對向基板 3 1 :玻璃基板 3 2 :透明電極 3 3、4 3 :配向膜 40 :像素電極基板 41 :矽基板 42 :反射型像素電極 5 :像素訊號校正部 5 1 :伽瑪校正部 52 :記憶部 5 3 :比較部 54 :校正量決定部 5 5 :向錯用校正部 -37 200820209 7、71 :校正表 8 :液晶投影器 8 R、8 G、8 B :液晶光燈泡 80 :螢幕 8 1 :光源 8 2、8 3 :二色性分光鏡 84 :全反射鏡 85〜87 :偏光分光鏡 8 8 :合成稜鏡 8 9 :投射透鏡 9 : TV裝置 9 1 A :類比調諧器 9 1 B :數位調諧器 9 1 C :選擇器 92A :畫像訊號轉換電路 92B: MPEG解碼器 93A :聲音訊號A/D電路 93B :聲音訊號處理電路 93C :聲音訊號增幅電路 94B :畫像訊號處理電路 9 6:啤!1叭 97A :遙控感光部 97B :網路端子 97C :網路I/F(介面） -38 200820209Interconnect: the peripheral component connection interface) The internal busbars B1 of the busbars and the like are connected to each other in common. In the TV device 9 formed in such a configuration, the liquid crystal display element described in the above embodiment can also be used, so that the same effect as in the above embodiment can be achieved, and high contrast and good image quality can be achieved. The image is displayed. [Brief Description of the Drawings] Fig. 1 is an explanatory view showing a configuration of a liquid crystal display element of a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing the configuration of a liquid crystal display unit shown in Fig. 1. Fig. 3 is a cross-sectional view showing the alignment failure occurring in the conventional liquid crystal display device. Fig. 4 is a cross-sectional view showing the misalignment following Fig. 3. Fig. 5 is a functional block diagram showing the detailed construction of the image signal correcting unit shown in Fig. 1. Figure 6 is a diagram showing the correction table. Fig. 7 is a view for explaining the image signal correction function of the first embodiment. -35- 200820209 Fig. 8 is a view showing a pattern correction function for explaining a modification of the first embodiment. Fig. 9 is a view showing the image signal correction function for explaining a modification of the first embodiment. Fig. 10 is a view showing a configuration of an example of a liquid crystal display device using the liquid crystal display element shown in Fig. 1. Fig. 1 is a timing chart for explaining a driving method of a liquid crystal display element according to a digital mode. Fig. 1 is a view showing a pattern correction function for explaining the second embodiment. Fig. 1 is a view showing a picture signal correction function for explaining a modification of the second embodiment. Fig. 14 is a view showing a picture signal correction function for explaining a modification of the second embodiment. Fig. 15 is an explanatory view showing a pixel pattern of the liquid crystal display element used in the examples and the comparative examples. Fig. 16 is a characteristic diagram showing the relationship between the transmittance of the liquid crystal display element of the comparative example and the reflection efficiency and contrast of the pixels. Fig. 17 is a view showing a pattern signal correction function for explaining a modification of the present invention. Fig. 18 is a characteristic diagram for comparing the reflection efficiencies of Comparative Example 3 and Example 3. Fig. 19 is a view showing a configuration of another example of a liquid crystal display device using the liquid crystal display element of the present invention. -36- 200820209 [Description of main component symbols] 1 = Liquid crystal display unit 1 0 : Display area 1 1 : Pixel 1 2 : Data driver 12A : Data line 1 3 : Scan driver 1 3 A : Scan line 1 4 : Pixel drive circuit 1 5 : Signal line 2 : Liquid crystal (vertical alignment liquid crystal) 3 〇: opposite substrate 3 1 : glass substrate 3 2 : transparent electrode 3 3 , 4 3 : alignment film 40 : pixel electrode substrate 41 : germanium substrate 42 : reflective type Pixel electrode 5: pixel signal correction unit 5 1 : gamma correction unit 52 : memory unit 5 3 : comparison unit 54 : correction amount determination unit 5 5 : error correction unit -37 200820209 7, 71 : correction table 8 : liquid crystal Projector 8 R, 8 G, 8 B : Liquid crystal light bulb 80 : Screen 8 1 : Light source 8 2, 8 3 : Dichroic beam splitter 84 : Total reflection mirror 85 to 87 : Polarizing beam splitter 8 8 : Synthetic 稜鏡8 9 : Projection lens 9 : TV device 9 1 A : Analog tuner 9 1 B : Digital tuner 9 1 C : Selector 92A: Image signal conversion circuit 92B: MPEG decoder 93A: Audio signal A/D circuit 93B: Audio signal processing circuit 93C: audio signal amplifying circuit 94B: image signal processing circuit 9 6: beer! 1 叭 97A: remote control light receiving portion 97B: Network Terminal 97C: Network I/F (Interface) -38 200820209
98A ： CPU 98B :快閃 ROM 98C ： SDRAM 98D :聲音·畫像訊號解碼器 -3998A : CPU 98B : Flash ROM 98C : SDRAM 98D : Sound · Image Signal Decoder -39