201018993 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種顯示面板，且特別是有關於一種液晶 顯示面板。 【先前技術】 隨著平面顯示技術的進步加上平面顯示器具有重量輕、體 積小及省電等優點’平面顯示器已愈來愈普及。常見的平面顯 示器有液晶顯示器（liquid crystal display, LCD )、電漿顯示器 (plasma display panel，PDP )、有機發光二極體顯示器（0rganic ❹ light emitting diode display, OLED display)以及電泳顯示器 (electrophoretic display，EPD )等，其中又以液晶顯示器的普 及率最高。 液晶顯示器包括液晶顯示面板（LCD panel)與背光模組 (backlightmodule)，其中液晶顯示面板主要包括二基板以及 配置於此二基板之間的液晶層。圖1是習知之一種液晶顯示面 板的剖面示意圖。請參照圖1，習知之液晶顯示面板1〇〇包括 薄膜電晶體陣列基板（thin film transistor array substrate ) 11 〇、 ❹ 彩色渡光基板（color filter substrate) 120、液晶層130、框膠 (sealant) 140與擂牆（barrier wall) 150。薄膜電晶體陣列基 板110與彩色濾光基板120相對，液晶層130配置於薄膜電晶 體陣列基板110與彩色濾光基板120之間。框膠140配置於薄 膜電晶體陣列基板110與彩色濾光基板120之間，且圍繞液晶 層130。此外，擋牆150配置於液晶層130與框膠140之間， 且圍繞液晶層130。擋牆150的外表面152垂直於薄膜電晶體 陣列基板110的第一表面112與彩色渡光基板120的第二表面 122。此外，擋牆15〇與框膠140之間存有間隙。 習知液晶顯示面板100的製作方法是先於薄膜電晶體陣 201018993 列基板110或彩色濾光基板120上形成擋牆150，之後再塗佈 框膠140。接著’進行液晶滴入（〇ne drop filling, ODF )製程， 之後將薄膜電晶體陣列基板110與彩色濾光基板120組立，並 固化框膠140。 由於液晶層130若與框膠140接觸，液晶分子132會受框 膠140的污染’導致液晶顯示面板1〇〇容易出現顯示不均勻 (mura)的現象。特別是，在聚合物分散液晶（polymer dispersed liquid crystal，PDLC)與聚合物支持配向（p〇lymer sustained ❹ alignment, PSA)等技術中，由於液晶層130内會添加可聚合 反應性單體，一旦發生液晶層130受框膠140污染的情形，則 更容易出現顯示不均勻（mura)的現象。另外，在光配向（photo alignment)技術中，位於薄膜電晶體陣列基板110的第一表面 112或彩色濾光基板120的第二表面122之配向膜（圖未示）， 其屬於感光材料’也可能會與框膠反應，同樣有被框膠污染的 可能。因此’上述之擋牆150是用以防止液晶層130中的液晶 分子132或者配向膜（圖未示）與框膠140接觸而遭受污染。 然而，塗佈框膠140時，用於塗佈框膠140的喷頭（nozzie ❹ head)在垂直於喷頭行進的方向有一定程度的精度誤差，此容 易導致擔牆150與框膠140之間的間距過大。此外，當薄膜電 晶體陣列基板110與彩色滤光基板120組立後，擋牆150與框 膠140之間的間隙會形成真空區域，此將導致薄膜電晶體陣列 基板110與彩色濾光基板120之間的間距不均勻，進而降低液 晶顯示面板100的顯示品質，甚至降低液晶顯示面板10〇的生 產良率。 此外’由於擋牆150與框膠140之間存有間隙，若以傳統 熱壓對組製程製作，在對液晶顯示面板1〇〇進行高溫測試時， 201018993 容易發生擋牆150與框膠！40裂開的情形，導致液晶分子i32 外漏。如此，將降低液晶顯示面板1〇〇的生產良率。 【發明内容】 本發明提供-種液晶顯示面板，以提升顯示品質。 ❹ ❹ 為達上述優點，本發明提出—種液㈣示面板，其包括第 二基板、液晶層、定位單元以及框膠。第二基板與 第:基板相對，液晶層配置於第一基板與第二基板之間，而定 早基板的第—表面與第二基板的第二表面之 ^圍繞液4。定位單元之外壁包括不垂直於第一表面斑 第一表面的塗佈面。框膠塗佈於定位單元之塗佈面，且位於第 一表面與第二表面之間，並圍繞定位單元。 、 之一ϊ施例中，上述之定位單元是封閉圖案。 或第it實施财，上述之定位單元形成於第一表面 荦與ί本實施例中，上述之定位單元包括第一封閉圖 一封閉圖案配置於第一表面，而第二封 閉圖案配置於第二表面且對應第—封閉圖案。 在本發明之-實施例中，上述之定位單元包括間 - 發明之一實施例中，上述之定位塊形成於第 表面戈第一表面。此外，在本發明之 表面，其餘部分二 塊交替設置。塊=於第二表面之定位 位塊包括第一部分列^上述之每-定 面，—雜第-表 在本發明之—實施例中，上述之一部分的定位單元是形成 201018993 於第-表面，其餘部分的定位單元是形成於第二表面。 在本發明之-實施财，上述之定位單元是形成於第一表 面或第二表面。 在本發明之-實施例中，上述之塗佈面包括斜面或曲面。 在本發明之-實關巾，上狀粒單元之㈣包 面。 在本發明之-實施例中，上述之定位單元是由金屬層、絕201018993 VI. Description of the Invention: [Technical Field] The present invention relates to a display panel, and more particularly to a liquid crystal display panel. [Prior Art] With the advancement of flat display technology and the advantages of flat panel display, such as light weight, small size, and power saving, flat panel displays have become more and more popular. Common flat panel displays include liquid crystal display (LCD), plasma display panel (PDP), organic light emitting diode display (OLED display), and electrophoretic display (electrophoretic display, EPD), among others, has the highest penetration rate of liquid crystal displays. The liquid crystal display includes a liquid crystal display panel (LCD panel) and a backlight module. The liquid crystal display panel mainly includes two substrates and a liquid crystal layer disposed between the two substrates. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view showing a conventional liquid crystal display panel. Referring to FIG. 1, a conventional liquid crystal display panel 1 includes a thin film transistor array substrate 11 〇, a color filter substrate 120, a liquid crystal layer 130, and a sealant. 140 and a barrier wall 150. The thin film transistor array substrate 110 is opposed to the color filter substrate 120, and the liquid crystal layer 130 is disposed between the thin film transistor array substrate 110 and the color filter substrate 120. The sealant 140 is disposed between the thin film transistor array substrate 110 and the color filter substrate 120 and surrounds the liquid crystal layer 130. In addition, the retaining wall 150 is disposed between the liquid crystal layer 130 and the sealant 140 and surrounds the liquid crystal layer 130. The outer surface 152 of the retaining wall 150 is perpendicular to the first surface 112 of the thin film transistor array substrate 110 and the second surface 122 of the color light-emitting substrate 120. In addition, there is a gap between the retaining wall 15A and the sealant 140. The conventional liquid crystal display panel 100 is formed by forming a retaining wall 150 on the thin film transistor array 201018993 column substrate 110 or the color filter substrate 120, and then applying the sealant 140. Then, a liquid crystal dropping (ODDF) process is performed, and then the thin film transistor array substrate 110 and the color filter substrate 120 are assembled, and the sealant 140 is cured. If the liquid crystal layer 130 is in contact with the sealant 140, the liquid crystal molecules 132 may be contaminated by the sealant 140, causing the liquid crystal display panel 1 to be prone to display mura. In particular, in a technique such as polymer dispersed liquid crystal (PDLC) and polymer supported alignment (PSA), since a polymerizable reactive monomer is added to the liquid crystal layer 130, once When the liquid crystal layer 130 is contaminated by the sealant 140, the phenomenon of display mura is more likely to occur. In addition, in the photo alignment technique, an alignment film (not shown) of the first surface 112 of the thin film transistor array substrate 110 or the second surface 122 of the color filter substrate 120 belongs to the photosensitive material 'also It may react with the sealant, and it may also be contaminated by the sealant. Therefore, the above-mentioned retaining wall 150 is for preventing the liquid crystal molecules 132 or the alignment film (not shown) in the liquid crystal layer 130 from coming into contact with the sealant 140 to be contaminated. However, when the sealant 140 is applied, the nozzie ❹ head for applying the sealant 140 has a certain degree of precision error in the direction perpendicular to the head travel, which easily causes the wall 150 and the sealant 140 to be The spacing between them is too large. In addition, when the thin film transistor array substrate 110 and the color filter substrate 120 are assembled, a gap between the retaining wall 150 and the sealant 140 forms a vacuum region, which will result in the thin film transistor array substrate 110 and the color filter substrate 120. The spacing between the two is uneven, which in turn reduces the display quality of the liquid crystal display panel 100 and even reduces the production yield of the liquid crystal display panel 10. In addition, due to the gap between the retaining wall 150 and the sealant 140, if the conventional hot press is used to make the set process, when the liquid crystal display panel 1 is subjected to high temperature test, the 201018993 is prone to the occurrence of the retaining wall 150 and the sealant! In the case of 40 cracking, the liquid crystal molecule i32 leaks. Thus, the production yield of the liquid crystal display panel 1〇〇 will be lowered. SUMMARY OF THE INVENTION The present invention provides a liquid crystal display panel to improve display quality. ❹ ❹ In order to achieve the above advantages, the present invention proposes a seed liquid (four) display panel comprising a second substrate, a liquid crystal layer, a positioning unit and a sealant. The second substrate is opposite to the first substrate, and the liquid crystal layer is disposed between the first substrate and the second substrate, and the first surface of the substrate and the second surface of the second substrate surround the liquid 4. The outer wall of the positioning unit includes a coated surface that is not perpendicular to the first surface of the first surface spot. The sealant is applied to the coated surface of the positioning unit and is located between the first surface and the second surface and surrounds the positioning unit. In one embodiment, the positioning unit is a closed pattern. Or the first implementation unit, the positioning unit is formed on the first surface, and the positioning unit includes a first closed pattern, a closed pattern is disposed on the first surface, and the second closed pattern is disposed on the second surface. The surface corresponds to the first closed pattern. In an embodiment of the invention, the positioning unit comprises a first embodiment of the invention, wherein the positioning block is formed on the first surface of the first surface. Further, on the surface of the present invention, the remaining two blocks are alternately arranged. Block = the positioning block on the second surface comprises a first partial column, each of the above-mentioned planes, - in the embodiment of the invention, the positioning unit of one of the above parts forms 201018993 on the first surface, The remaining portion of the positioning unit is formed on the second surface. In the practice of the present invention, the positioning unit described above is formed on the first surface or the second surface. In an embodiment of the invention, the coated surface comprises a bevel or a curved surface. In the case of the present invention, the (4) coating of the upper granular unit. In the embodiment of the present invention, the positioning unit is made of a metal layer.
❹ 緣層、光間隙物、黑色矩陣層、彩色光阻層以及保護層至少其 中之一所構成。 、 本發明之液晶顯示面板具有定位單元，其具塗佈面可供框 膠塗佈’框雜定位單元之間無_，如此不僅能定義框膠塗 ^的位置、防止框膠破裂導致液晶分子紐以及防止框勝在第 一基板與第二基板的組立過程中變形而導致第一基板斑第二 基板之間的間距不均勻等，還可以防止液晶層中的液晶ϋ 框膠接觸而導致液晶分子受到污染At least one of a rim layer, a photo spacer, a black matrix layer, a color photoresist layer, and a protective layer is formed. The liquid crystal display panel of the invention has a positioning unit, and the coated surface can be coated by the frame glue, and there is no _ between the frame and the positioning unit, so that not only the position of the frame glue coating but also the cracking of the frame glue is prevented, thereby causing liquid crystal molecules. And preventing the frame from being deformed during the assembly process of the first substrate and the second substrate, resulting in uneven spacing between the first substrate spot and the second substrate, etc., and preventing the liquid crystal frame glue in the liquid crystal layer from contacting to cause liquid crystal Molecular contamination
。因此，本發明之液晶顯示面板具有較佳的顯示品質且 面板窄邊框之效果。 違至J ^為讓本發明之上述和其他目的、特徵和優點能更明顯易 懂’下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖2是本發明一實施例之一種液晶顯示面板的剖面示意 圖，圖3是圖2中框膠與定位單元的俯視示意圖，而圖4是= 圖3中1-1’線的剖面示意圖。請參照圖2至圖4，本實施 液晶顯示面板200包括第一基板210、第二基板22〇、液晶 230、框膠240以及定位單元25〇。第二基板22〇與第一基板 6 201018993 210相對，液晶層230配置於第一基板210與第二基板22〇之 間，而定位單元250設置於第一基板21〇靠近液晶層23〇的第 表面212與第一基板220靠近液晶層23〇的第二表面222之 間’並圍繞液晶$ 230。定位單元250之外壁包括不垂直於第 一，面212與第二表面222的塗佈面252。框膠24〇塗佈於定 位單το 250之塗佈面252,且位於第一表面212與第二表面 之間’並圍繞定位單元250。 上述之液晶顯示面板200中，第一基板21〇例如是主動元 ，陣列基板（如薄膜電晶體陣列基板），而第二基板22〇例如 是彩色渡光基板。此外，定位單元25()例如是封_案，如封 閉之矩形。此定位單元250例如形成於第一基板21〇的第一表 面212或第二基板22〇的第二表面222。定位單元25〇可由單 一材料所構成或是由多個膜層堆疊而成。另外，定位單元25〇 可與第-基板210或第二基板22G上的各膜層同時形成。當 然，在本實施例中，亦可用另一製程來形成定位單元25〇。. Therefore, the liquid crystal display panel of the present invention has a better display quality and an effect of a narrow frame of the panel. The above and other objects, features, and advantages of the present invention will become more apparent and understood <RTIgt; 2 is a schematic cross-sectional view of a liquid crystal display panel according to an embodiment of the present invention, FIG. 3 is a top plan view of the sealant and the positioning unit of FIG. 2, and FIG. 4 is a =1 line of FIG. Schematic diagram of the section. Referring to FIG. 2 to FIG. 4, the liquid crystal display panel 200 of the present embodiment includes a first substrate 210, a second substrate 22, a liquid crystal 230, a sealant 240, and a positioning unit 25A. The second substrate 22 is opposite to the first substrate 6 201018993 210. The liquid crystal layer 230 is disposed between the first substrate 210 and the second substrate 22 , and the positioning unit 250 is disposed on the first substrate 21 adjacent to the liquid crystal layer 23 . The surface 212 is adjacent to the first substrate 220 between the second surface 222 of the liquid crystal layer 23A and surrounds the liquid crystal $230. The outer wall of the positioning unit 250 includes a coated surface 252 that is not perpendicular to the first, surface 212 and second surface 222. The sealant 24 is applied to the coated surface 252 of the positioning sheet το 250 and is located between the first surface 212 and the second surface ′ and surrounds the positioning unit 250. In the above liquid crystal display panel 200, the first substrate 21 is, for example, an active element, an array substrate (e.g., a thin film transistor array substrate), and the second substrate 22 is, for example, a color light-emitting substrate. Further, the positioning unit 25() is, for example, a sealed case such as a closed rectangle. The positioning unit 250 is formed, for example, on the first surface 212 of the first substrate 21 or the second surface 222 of the second substrate 22A. The positioning unit 25 can be composed of a single material or a plurality of film layers. Further, the positioning unit 25A can be formed simultaneously with each of the film layers on the first substrate 210 or the second substrate 22G. Of course, in this embodiment, another process can be used to form the positioning unit 25A.
承上述，定位單元是由金屬層、絕緣層、光間隙物、黑色 矩陣層、彩色光阻層以及保護層之至少其中之—所構成^例 如’在定位單元250形成於第一基板21〇的第一表面212之實 施例中，定位單元250可由第-基板21〇的金屬層、絕緣層、 保護層或其他膜層所構成，或是由上述這些顧任意组合堆叠 而成。此外，在定位單元250形成於第二基板22〇的第二表面 222之實施例中’定位單元25〇可由第二基板—的光間隙物 (ph〇t〇Spacer)、黑色矩陣層（black matrix layer)、彩色光 阻層、保護層或其他臈層所構成，或是由上述 = 合堆疊喊。另外，定位單元，的塗佈面2料包=；；1 且 斜面。定位單元250的塗佈面252亦可為曲面或其他形狀的表 201018993 面。定位單元250的内壁254例如是垂直於第一基板21〇的第 一表面212與第二基板220的第二奉面222。 ❹ ❹ 在本實施例中，由於定位單元25〇的塗佈面252不垂直於 第一表面212與第二表面222，所以在塗佈框膠24〇時，可將 框膠240塗佈於定位單元25〇的塗佈面252上，使框膠24〇 鄰於定位單元25G之塗佈面252。在第一基板21()與第二純 220組立後’由於框膠24〇緊鄰於定位單元25〇的塗佈面， 所以未被固化的框膠240的流動會受到塗佈φ况的限制，如 此可使第-基板210與第二基板22〇之間的間距較為均勾。因 此’本實施例之液晶顯示面板2〇〇具有較佳的顯示品質。 另外，由於框膠240與定位單元25〇之間無間隙，在對液 曰曰顯不面板200進行高溫測試時，框膠24〇與定位單元25〇較 =裂開，所以本實施例之液晶顯示面板綱具有較高的生產 =。此外，由於定位單元250是位於_ 24〇與液晶層23〇 =’所以能防錢晶層23G中的液晶分子232遭受框勝· 巧'染，進而提升液晶顯示面板2〇〇的顯示品質。 值得-提的是’定位單元25〇的材質可選用非剛 ΪΓ之1定=元250的厚度高於第一基板210與第二基板 可益/^間距’在第一基板210與第二基板220組立時， 基板210與第二基板220施壓於定位單元250，使 3 = 度縮小至與第一基板210與第二基板220之 j的預足間距相同，以避免第—基板21G與第二基板22〇之間 距誤差影響面板顯示品質。 的塗本發明其他實施例之定位單元，這些定位單元 ，塗佈面皆不垂直於第—基板的第—表面與第二 面’且攻些定位單元的形成方法可與上述之定位&元，的 201018993 形成方法相同。 清參照圖5 ’其為本發明另一實施例之液晶顯示面板的定 位單元之剖面示意圖。圖5與圖4相似，差別處在於圖5之定 位單元250a包括第一封閉圖案251與第二封閉圖案253。第 一封閉圖案251是形成於第一基板210之第一表面212，而第 二封閉圖案253是形成於第二基板220之第二表面222。而且， 第一封閉圖案251對應第二封閉圖案253，亦即，在第一基板 210與第二基板220組立後，第一封閉圖案251連接第二封閉 〇 圖案253。換言之，定位單元250a是由第一封閉圖案251與 第二封閉圖案253堆疊而成。此外，第一封閉圖案25丨與第二 封閉圖案253的形狀，與圖3之定位單元250所形成的封閉圖 案相同，均為封閉之矩形。 圖6疋本發明另一實施例之液晶顯示面板的框膠與定位 單元的俯視示意圖，而圖7是沿圖6中ΙΙ-ΙΓ線的剖面示意圖。 請參照圖6，本實施例之液晶顯示面板的定位單元25〇b包括 間隔排列的多個定位塊255。這些定位塊255可形成於第一基 板210的第一表面212或第二基板220的第二表面222。 在本發明中，定位塊255可形成於第一基板21〇的第一表 面212與第一基板220的第二表面222。請參照圖8，其為本 發明另一實施例之液晶顯示面板的定位單元之剖面示意圖”'。圖 8與圖7相似，差別處在於圖8之定位單元25此的每一定位 塊255a包括第一部分257與第二部分259，其中第一部分257 是形成於第一基板210的第一表面212，而第二部分25^是形 成於第二基板220的第二表面222。而且，第一部分25?對應 =二部分259 ’亦即’在第一基板210與第二基板22〇組立後二 第一部分257連接第二部分259。 201018993 π請參照圖9,其為本發明另一實施例之液晶顯示面板的定 位ΐ元之剖面示意圖。圖9與圖7相似，差別處在於圖9之定 位單7G 250d包括多個第一定位塊255b與多個第二定位塊 255c。第一定位塊255b間隔排列於第一基板21〇的第一表面 212’而第二定位塊255c間隔排列於第二基板22〇的第二表面 222。而且，在第一基板21〇與第二基板22〇組立後，第一定 位塊255b與第二定位塊255c交替設置。 圖10是本發明另一實施例之一種液晶顯示面板的剖面示 ❹意圖。sf參照圖1〇，本實施例之液晶顯示面板2〇〇，與圖2之 液晶顯示面板200相似，差別處在於液晶顯示面板2〇〇的定位 單元250之内壁254是垂直於第一基板21〇的第一表面212與 第二基板22G的第二表面222，而液晶顯示面板游的定位單 兀250e之内壁254不垂直於第一基板21〇的第一表面.212與 第二基板220的第二表面222。具體而言，定位單元2撕之 内壁254包括至少-斜面。在其他實施例巾定位單元 之内壁254亦可為曲面或其他形狀的表面。 綜上所述，本發明之液晶顯示面板至少具有下列優點： D 1·本發明之液晶顯示面板具有定位單元，可定義框膠塗布 之位置’使框膠内的顯示區中的體積固定，所需要的液晶體積 也隨之固定。在ODF製程中可免除因顯示區中空間的變化而 導致液晶量相對過多或不足，而避免面板内發生真空區域或顯 示不均勻(mum)的現象。因此本發明之液晶顯示面板 佳 的顯示品質。 —2·由於_是㈣於粒單元之塗佈面，所赌膠與定位 單元之間不會有間隙，如此不僅能防止插膠破裂導致液晶分子 外流’還能防止框膠在第-基板與第二基板的組立過程中變形 201018993 ，導致第一基板與第二基板之間的間距不均勻。如此，能有效 提升本發明之液晶顯示面板的生產良率以及顯示品質。 3. 本發明之液晶顯示面板因具有定位單元，可以防止液晶 層中的液晶分子與框膠接觸而導致液晶分子受到污染，因此: 發明之液晶顯示面板具有較佳的顯示品質。 4. 本發明可防止液晶層中的液晶分子與框膠接觸而導致 液晶分子受到污染，可使框膠的位置能設計於更靠近顯示區域 而沒有液晶分子受框膠污染的疑慮，因此可減少面板周圍非顯 示區的範圍，而達到面板窄邊框的功效。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定 本發明，本發明所屬技術領域中具有通常知識者，在不脫離本 發明之精神和範圍内，當可作些許之更動與潤飾，因此本發明 之保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1是習知一種液晶顯示面板的剖面示意圖。 圖2是本發明一實施例之一種液晶顯示面板的剖面示 圖。 … 圖3是圖2中框膠與定位單元的俯視示意圖。 圖4是沿圖3中Μ’線的刮面示意圖。 圖5是本發明另一實施例之液晶顯示面板的定位單元之 剖面示意圖。 圖6是本發明另一實施例之液晶顯示面板的框膠與定位 卓元的俯視示意圖。 圖7是沿圖6中Π-ΙΙ，線的剖面示意圖。 圖8為本發明另一實施例之液晶顯示面板的定位單元之 剖面示意圖。 11 201018993 圖9為本發明另一實施例之液晶顯示面板的定位單元之 剖面示意圖。 圖10是本發明另一實施例之一種液晶顯示面板的剖面示 意圖。 【主要元件符號說明】 100、200、200’ ：液晶顯示面板 110 :薄膜電晶體陣列基板 112、212 :第一表面 120 :彩色濾光基板 ❹ 122、222 :第二表面 130、230 :液晶層 132、232:液晶分子 140、240 :框膠 150 擋牆 152 外表面 210 第一基板 220 第二基板 Q 250、250a、250b、250c、250d、250e :定位單元 251 :第一封閉圖案 252 :塗佈面 253 :第二封閉圖案 254 :内壁 255、255a :定位塊 255b :第一定位塊 255c :第二定位塊 257 :第一部分 259 :第二部分 12In the above, the positioning unit is formed by at least one of a metal layer, an insulating layer, a photo spacer, a black matrix layer, a color photoresist layer and a protective layer, for example, formed on the first substrate 21 at the positioning unit 250. In the embodiment of the first surface 212, the positioning unit 250 may be composed of a metal layer, an insulating layer, a protective layer or other film layers of the first substrate 21, or may be stacked by any combination of the above. In addition, in the embodiment in which the positioning unit 250 is formed on the second surface 222 of the second substrate 22A, the positioning unit 25 can be a second substrate--optical spacer, black matrix layer (black matrix) Layer), a color photoresist layer, a protective layer or other layer of germanium, or by stacking above. In addition, the positioning surface of the positioning unit 2 is packaged;; 1 and beveled. The coated surface 252 of the positioning unit 250 can also be a curved surface or other shaped surface 201018993. The inner wall 254 of the positioning unit 250 is, for example, a first surface 212 perpendicular to the first substrate 21A and a second facing surface 222 of the second substrate 220.本 ❹ In this embodiment, since the coating surface 252 of the positioning unit 25〇 is not perpendicular to the first surface 212 and the second surface 222, the sealant 240 can be applied to the positioning when the sealant 24 is applied. On the coated surface 252 of the unit 25, the sealant 24 is adjacent to the coated surface 252 of the positioning unit 25G. After the first substrate 21() and the second pure 220 are assembled, the flow of the uncured sealant 240 is limited by the coating condition because the sealant 24 is immediately adjacent to the coated surface of the positioning unit 25A. In this way, the spacing between the first substrate 210 and the second substrate 22〇 can be relatively uniform. Therefore, the liquid crystal display panel 2 of the present embodiment has better display quality. In addition, since there is no gap between the sealant 240 and the positioning unit 25〇, when the liquid level display panel 200 is subjected to high temperature test, the sealant 24〇 and the positioning unit 25〇 are relatively cracked, so the liquid crystal of the embodiment The display panel has a higher production=. In addition, since the positioning unit 250 is located at _ 24 〇 and the liquid crystal layer 23 〇 = ', the liquid crystal molecules 232 in the anti-money layer 23G can be subjected to frame smashing, thereby improving the display quality of the liquid crystal display panel 2 . It is worth mentioning that the material of the positioning unit 25〇 can be selected to be non-rigid 1 = the thickness of the element 250 is higher than the first substrate 210 and the second substrate can be used in the first substrate 210 and the second substrate. When the 220 sets are standing, the substrate 210 and the second substrate 220 are pressed against the positioning unit 250, so that the 3= degree is reduced to be the same as the pre-foot distance of the first substrate 210 and the second substrate 220, so as to avoid the first substrate 21G and the first substrate. The error between the two substrates 22〇 affects the display quality of the panel. The positioning unit of the other embodiments of the present invention, the positioning units, the coated surfaces are not perpendicular to the first surface and the second surface of the first substrate, and the forming method of the positioning unit can be combined with the positioning and the above , 201018993 is formed in the same way. FIG. 5 is a cross-sectional view showing a positioning unit of a liquid crystal display panel according to another embodiment of the present invention. 5 is similar to FIG. 4, with the difference that the positioning unit 250a of FIG. 5 includes a first closed pattern 251 and a second closed pattern 253. The first closed pattern 251 is formed on the first surface 212 of the first substrate 210, and the second closed pattern 253 is formed on the second surface 222 of the second substrate 220. Moreover, the first closed pattern 251 corresponds to the second closed pattern 253, that is, after the first substrate 210 and the second substrate 220 are assembled, the first closed pattern 251 is connected to the second closed 图案 pattern 253. In other words, the positioning unit 250a is formed by stacking the first closed pattern 251 and the second closed pattern 253. Further, the shapes of the first closed pattern 25A and the second closed pattern 253 are the same as those of the closed pattern formed by the positioning unit 250 of Fig. 3, and are all closed rectangles. 6 is a top plan view of a sealant and a positioning unit of a liquid crystal display panel according to another embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line ΙΙ-ΙΓ of FIG. Referring to FIG. 6, the positioning unit 25B of the liquid crystal display panel of the present embodiment includes a plurality of positioning blocks 255 arranged at intervals. These positioning blocks 255 can be formed on the first surface 212 of the first substrate 210 or the second surface 222 of the second substrate 220. In the present invention, the positioning block 255 may be formed on the first surface 212 of the first substrate 21 and the second surface 222 of the first substrate 220. Please refer to FIG. 8 , which is a cross-sectional view of a positioning unit of a liquid crystal display panel according to another embodiment of the present invention. FIG. 8 is similar to FIG. 7 , and the difference is that each positioning block 255 a of the positioning unit 25 of FIG. 8 includes The first portion 257 and the second portion 259, wherein the first portion 257 is formed on the first surface 212 of the first substrate 210, and the second portion 25 is formed on the second surface 222 of the second substrate 220. Moreover, the first portion 25 Corresponding = two parts 259 'that is, after the first substrate 210 and the second substrate 22 are assembled, the second portion 257 is connected to the second portion 259. 201018993 π Please refer to FIG. 9 , which is a liquid crystal according to another embodiment of the present invention. FIG. 9 is similar to FIG. 7. The difference is that the positioning unit 7G 250d of FIG. 9 includes a plurality of first positioning blocks 255b and a plurality of second positioning blocks 255c. The first positioning blocks 255b are spaced apart. The first surface 212' is arranged on the first surface 212' of the first substrate 21'', and the second positioning block 255c is spaced apart from the second surface 222 of the second substrate 22's. Further, after the first substrate 21'' and the second substrate 22'' are assembled, First positioning block 255b and second positioning 255c is alternately arranged. Fig. 10 is a cross-sectional view showing a liquid crystal display panel according to another embodiment of the present invention. sf Referring to Fig. 1, the liquid crystal display panel 2 of the present embodiment is similar to the liquid crystal display panel 200 of Fig. 2. The difference is that the inner wall 254 of the positioning unit 250 of the liquid crystal display panel 2 is perpendicular to the first surface 212 of the first substrate 21〇 and the second surface 222 of the second substrate 22G, and the positioning panel of the liquid crystal display panel swims The inner wall 254 of the 250e is not perpendicular to the first surface .212 of the first substrate 21 and the second surface 222 of the second substrate 220. Specifically, the inner wall 254 of the positioning unit 2 is at least-beveled. In other embodiments The inner wall 254 of the positioning unit may also be a curved surface or other shaped surface. In summary, the liquid crystal display panel of the present invention has at least the following advantages: D 1 · The liquid crystal display panel of the present invention has a positioning unit, which can define a sealant coating The position 'fixes the volume in the display area in the sealant, and the required liquid crystal volume is also fixed. In the ODF process, the liquid crystal amount is relatively excessive due to the change of the space in the display area. Or insufficient, and avoid the occurrence of vacuum area or display of mum in the panel. Therefore, the liquid crystal display panel of the present invention has good display quality. 2) Since _ is (4) on the coated surface of the granular unit, the gambling glue There is no gap between the positioning unit and the positioning unit, so that not only the rupture of the plugging liquid can be prevented, but also the outflow of the liquid crystal molecules can be prevented, and the sealant can be prevented from being deformed during the assembly process of the first substrate and the second substrate, resulting in the first substrate and the second substrate. The spacing between the liquid crystal display panels of the present invention can effectively improve the production yield and display quality of the liquid crystal display panel of the present invention. 3. The liquid crystal display panel of the present invention can prevent liquid crystal molecules and sealant in the liquid crystal layer by having a positioning unit. The liquid crystal molecules are contaminated by the contact, and therefore: The liquid crystal display panel of the invention has better display quality. 4. The invention can prevent the liquid crystal molecules in the liquid crystal layer from contacting the sealant and cause the liquid crystal molecules to be contaminated, so that the position of the sealant can be designed to be closer to the display area without the doubt that the liquid crystal molecules are contaminated by the sealant, thereby reducing The extent of the non-display area around the panel, and the effect of the narrow border of the panel. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and it is intended to be a part of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a conventional liquid crystal display panel. Figure 2 is a cross-sectional view showing a liquid crystal display panel in accordance with an embodiment of the present invention. Figure 3 is a top plan view of the sealant and positioning unit of Figure 2. Figure 4 is a schematic view of the scraping surface taken along line Μ' in Figure 3. Fig. 5 is a cross-sectional view showing a positioning unit of a liquid crystal display panel according to another embodiment of the present invention. 6 is a top plan view showing a sealant and a positioning element of a liquid crystal display panel according to another embodiment of the present invention. Figure 7 is a cross-sectional view taken along line Π-ΙΙ of Figure 6. FIG. 8 is a cross-sectional view showing a positioning unit of a liquid crystal display panel according to another embodiment of the present invention. 11 201018993 FIG. 9 is a cross-sectional view showing a positioning unit of a liquid crystal display panel according to another embodiment of the present invention. Figure 10 is a cross-sectional view showing a liquid crystal display panel according to another embodiment of the present invention. [Description of main component symbols] 100, 200, 200': liquid crystal display panel 110: thin film transistor array substrate 112, 212: first surface 120: color filter substrate ❹ 122, 222: second surface 130, 230: liquid crystal layer 132, 232: liquid crystal molecules 140, 240: sealant 150 retaining wall 152 outer surface 210 first substrate 220 second substrate Q 250, 250a, 250b, 250c, 250d, 250e: positioning unit 251: first closed pattern 252: painted Cloth surface 253: second closed pattern 254: inner wall 255, 255a: positioning block 255b: first positioning block 255c: second positioning block 257: first portion 259: second portion 12