117PA 200933266 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種液晶顯示面板及應用其之液晶 顯示裝置，且特別是有關於一種具有框膠圍繞於顯示區域 之液晶顯示面板及應用其之液晶顯示裝置。 【先前技術】 近年來消費性電子產品曰漸受到消費者的歡迎，各式 ❹ 各樣的電子產品，如行動電話、筆記型電腦乃至於液晶電 視等，已經成為現在人日常生活中不可缺少的一部份。特 別是應用液晶顯示面板之薄型化顯示裝置，由於具有小體 積、低輻射以及低耗電量等優點，已逐漸取代傳統映像管 顯示器，成為消費者選購顯示器或電視時的首選。隨著液 晶顯示裝置在市場上的接受度大增，消費者對於液晶顯示 裝置的晝面品質亦有日益嚴苛的要求，例如可視角度、對 比度、晝面反應速率以及晝面穩定度等等。 〇 關於提升晝面品質的因素中常見的問題之一係為影 像殘留。一般來說，液晶顯示面板中係將液晶層夾設於平 行之上下兩基板之間，並且施加電壓於上下兩基板的電 極*以於兩基板之間產生電場來控制液晶層中液晶分子的 傾倒方向。在液晶層中常具有一定濃度之離子，除了液晶 材料之混合物分子之間即具有離子外，配向層的材料經過 摩擦配向（rubbing)之後亦會有離子產生，更由於液晶 顯示裝置的操作條件，如背光中紫外光的照射以及長時間 5117PA 200933266 IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display panel and a liquid crystal display device using the same, and more particularly to a liquid crystal display panel having a sealant surrounding a display area and an application thereof Its liquid crystal display device. [Prior Art] In recent years, consumer electronic products have gradually become popular among consumers. Various electronic products, such as mobile phones, notebook computers and even LCD TVs, have become indispensable in daily life. a part. In particular, the thin display device using a liquid crystal display panel has gradually replaced the conventional image tube display because of its small volume, low radiation, and low power consumption, and has become the first choice for consumers to purchase a display or a television. With the increasing acceptance of liquid crystal display devices in the market, consumers are increasingly demanding the quality of the liquid crystal display device, such as viewing angle, contrast, kneading reaction rate, and kneading stability.之一 One of the common problems in improving the quality of kneading is the image residue. Generally, in a liquid crystal display panel, a liquid crystal layer is sandwiched between two substrates in parallel and above, and a voltage is applied to the electrodes of the upper and lower substrates to generate an electric field between the two substrates to control the tilting of liquid crystal molecules in the liquid crystal layer. direction. In the liquid crystal layer, ions of a certain concentration are often present, and in addition to the ions between the molecules of the liquid crystal material, the material of the alignment layer may also generate ions after rubbing, and more, due to the operating conditions of the liquid crystal display device, such as Illumination of ultraviolet light in the backlight and long time 5
7PA 200933266 高溫的作用，使得液晶顯示面板中之材料，例如框膠，會 持續分解出離子。離子會因為液晶分子改變傾倒方向的同 時而發生非等向性之移動，此外更會因受到電場影響而在 液晶分子間移動。離子除了在兩基板間向下及向上移動之 外，更由於離子具有非等向性之遷移作用，離子在移動時 會進行微小的橫向移動。雖然在某些狀況下，於一次電壓 循環（a period of voltage)結束後，離子整體之淨橫 向移動會趨近於零，然而時常仍有部分離子殘留有橫向移 ❹ 動之能量。經過許多次電壓循環之後，尤其是長時間進行 同一晝面之顯示之後，離子殘留之橫向移動能量累積達一 定程度，會使得離子朝向高低電壓差異大的晝素邊緣移動 並且累積。實際上來看，當液晶顯示裝置在長時間顯示同 樣的晝面，接著切換至另一個不同的晝面後，會在面板上 隱約殘留上一晝面的圖像，特別是形成於高對比圖像的邊 緣。當離子聚集到足以影響驅動液晶分子之電場時，會使 液晶晝素的穿透率改變，導致光線通過晝素時發生顯示顏 〇 色不均的現象。此時進行顯示晝面的切換，則已經聚集的 離子無法馬上離開配向層表面，會使液晶顯示面板於離子 聚集處顯示出不同穿透率的影像殘留。 目前業界為了減少離子的產生，常見的作法包括增加 一層表面塗層（overcoat)來吸收背光中的紫外光，但是 此種方式不僅增加了製程步驟，更增加了成本。而另外一 種減少離子產生之方式，是利用提高材料潔淨度來降低污 染，進而減少材料中離子含量。然而此種方法對於材料有 67PA 200933266 The effect of high temperature causes materials in the liquid crystal display panel, such as sealant, to continuously decompose ions. The ions move in an anisotropic manner because the liquid crystal molecules change the tilting direction, and also move between the liquid crystal molecules due to the influence of the electric field. In addition to the downward and upward movement of the ions between the two substrates, the ions also have a non-isotropic migration, and the ions move slightly laterally while moving. Although in some cases, the net lateral movement of the ion will approach zero after the end of a period of voltage, there are still some ions remaining with lateral shifting energy. After many voltage cycles, especially after a long time of display of the same surface, the lateral movement energy of the ion residue accumulates to a certain extent, causing the ions to move toward the edge of the high-low voltage difference and accumulate. In fact, when the liquid crystal display device displays the same kneading surface for a long time and then switches to another different kneading surface, a superficial image is left on the panel, especially in a high contrast image. the edge of. When the ions are concentrated to an electric field sufficient to affect the driving of the liquid crystal molecules, the transmittance of the liquid crystals is changed, resulting in unevenness of the color when the light passes through the halogen. At this time, switching of the display pupil surface is performed, and the accumulated ions cannot immediately leave the surface of the alignment layer, so that the liquid crystal display panel exhibits image retention of different transmittance at the ion accumulation. In the current industry, in order to reduce the generation of ions, a common practice includes adding an overcoat to absorb the ultraviolet light in the backlight, but this method not only increases the process steps, but also increases the cost. Another way to reduce ion generation is to improve the cleanliness of the material to reduce contamination and thus reduce the amount of ions in the material. However, this method has 6 for materials.
L7PA 200933266 更嚴苛的要求，大幅增加了材料選用的困難度，並且同樣 大幅增加了製造成本。 【發明内容】 有鑑於此，本發明係提供一種液晶顯示面板及應用其 之液晶顯示裝置，其係利用於框膠與顯示區域之間設置多 個環狀電極，並且於此些環狀電極間產生電場之方式，捕 捉框膠中析出之離子雜質，以改善影像殘留的問題，進而 © 提升影像品質。此外更至少具有增加材料選擇寬容度、可 相容傳統製程及結構等優點。 根據本發明之一方面，提出一種液晶顯示面板，包括 一基板、多個環狀電極以及一框朦。基板具有一顯示區 域。此些環狀電極設置於基板上，並且圍繞顯示區域。此 些環狀電極具有至少兩個不同之電壓。框膠係圍繞此些環 狀電極。 根據本發明之另一方面，提出一種液晶顯示裝置，包 〇 括一液晶顯示面板以及一電壓源。液晶顯示面板包括一基 板、多個環狀電極及一框膠。基板具有一顯示區域。此些 環狀電極設置於基板上，並且圍繞顯示區域。此些環狀電 極具有至少兩個不同之電壓。框膠係圍繞此些環狀電極。 電壓源電性連接於此些環狀電極中至少一個環狀電極，用 以提供電壓。 為讓本發明之上述内容能更明顯易懂，下文特舉較佳 之實施例，並配合所附圖式，作詳細說明如下·· 7 200933266 【實施方式】 依照本發明較佳實施例之液晶顯示裝置，至少包括一 液晶顯示面板以及一電壓源。液晶顯示面板包括一基板、 多個環狀電極及-框膠。此些環狀電極以及框膠係依序由 内而外環繞基板之-顯示區域設置。利用施加至少兩個不 同之電壓於此些環狀電極，以於此些環狀電極之間產生橫 向電場來捕捉離子雜質（ion impurity)。以下本實施例 之詳細說明中，此些環狀電極係以包括一第一環狀電極、 〇 —第二環狀電極及一第三環狀電極為例做說明。 請參照第1圖，其!會示依照本發明較佳實施例之液晶 顯示裝置之示意圖。液晶顯示裝置1〇〇包括一液晶顯示面 板120以及一電麼源14〇。液晶顯示面板12〇包括一基板 122、-轉124、m電極126、—第二環狀電極 127及一第三環狀電極128。基板具有一顯示區域12%， 位於基板120只貝上之中央位置。此些環狀電極1、1 及128汉置於基板122上，並且圍繞於顯示區域122a。框 鬈膠124圍繞於此些環狀電極126、m及128設置。此些 環狀電極126 ' 127及128具有至少兩個不同之電麗，且 此二％狀電極126、127及128中任兩相鄰之環狀電極具 有不同之电壓。再者，電壓源i4〇係電性連接於此些環狀 電極126、127及128 t至少-者，用以提供電壓。 本只施例中框膠124較佳地係與顯示區域122a間隔 -距離’以將此些環狀電極126、m及128設置於框膠 124及顯示區域他之間。此外，本實施例之電壓源14〇 8 200933266 係電性連接於顯示區域122a以及第二環狀電極127’以提 供第二環狀電極127 —第一固定電壓VI。本實施例中電壓 源140例如是提供液晶顯示面板120之共同電壓（common vo 11age)。其次，液晶顯示裝置10 0例如更包括一外部電 壓源160，電性連接於第一環狀電極126及第三環狀電極 128，用以提供第一及第三環狀電極126及128 —第二固 定電壓V2,此第二固定電壓V2係不同於第一固定電壓 VI。本實施例中第一固定電壓VI例如是高於第二固定電 ❹壓V2，使得此些電極126、127及128之間可產生一平行 於基板 122 之橫向電場（lateral electric field) E， 用以將框膠124裂解析出之離子雜質（ion impurity)捕 捉（trap)於電場中。利用施以固定電壓之此些電極126、 127及128，促使離子雜質進行橫向移動，並且累積在高 低電壓區域之邊界，如本實施例中第二環狀電極127之邊 緣。也就是相當於促使離子雜質累積在顯示區域122a外， 避免了離子雜質擴散至顯示區域122a中造成使用者可見 ❹的影像殘留，導致影像品質下降的問題。 此外，電壓源140與第一、第二及第三環狀電極126、 127及128之連接關係不限制於上述之方式。於另一實施 例中，電壓源140亦可電性連接至第一及第三環狀電極126 及128。請參照第2圖，其繪示第1圖之電壓源連接於不 同環狀電極之示意圖。第2圖中電壓源係電性連接至顯示 區域122a，並且電性連接於第一環狀電極126及第三環狀 電極128，用以提供第一及第三環狀電極126及128第一 9 200933266 固定電壓VI。而外部電壓源160係電性連接於第二環狀電 極127，用以提供第二環狀電極127第二固定電壓V2。第 一固定電壓VI例如是高於第二固定電壓V2，同樣可於此 些電極126、127及128之間產生平行於基板122之橫向 電場E，以捕捉離子雜質。 本實施例中係將第一環狀電極126及第三環狀電極 128電性連接至相同之外部電壓源160，使得第一及第三 環狀電極126及128具有相同之第二固定電壓V2為例。 ❹然而，第一及第三環狀電極126及128亦可分別連接至不 同之外部電壓源，使得第一環狀電極126之電壓不同於第 三環狀電極之電壓128，亦即此些環狀電極126、127及 128之電壓均不相同。此外，本實施例中液晶顯示面板120 係以三個環狀電極126、127及128為例做說明，然而液 晶顯示面板120亦可包括三個以上之環狀電極，只要於任 兩相鄰之環狀電極之間施加不同電壓，並且使相鄰之三個 環狀電極依序具有高-低-高或低-高-低之電壓的方式，均 ❹可用於將離子雜質侷限於框膠124以及顯示區域122a之 間。 其次，本實施例中基板12 2可例如是液晶顯示面板12 0 之彩色濾光片基板。也就是說，第一環狀電極126、第二 環狀電極127及第三環狀電極128可設置於彩色濾光片基 板上。當此些環狀電極126、127及128設置於彩色濾光 片基板上時，可確保此些環狀電極126、127及128不會 影響到薄膜電晶體基板上原有之畫素電路，維持顯示區域 10 200933266 122a中各晝素的正常顯示。然而，第一環狀電極126、第 二環狀電極127及第三環狀電極128亦可設置於薄膜電晶 體基板上。另外，此些環狀電極126、127及128係可於 一般傳統製程中，在基板上利用黃光蝕刻製程形成銦錫氧 化物（In-Tin Oxide，ΙΤ0)透明電極之圖案（pattern) 時同時形成，其係不會增加製程步驟及成本，具有可相容 於傳統液晶顯示面板之製程的優點。 上述依照本發明較佳貫施例之液晶顯不面板及液晶 © 顯示裝置，包括液晶顯示面板以及電壓源。液晶顯示面板 包括基板、多個環狀電極以及框膠。此些環狀電極及框膠 係圍繞基板之顯示區域設置，且此些環狀電極位於顯示區 域以及框膠之間。此些環狀電極具有至少兩個不同之電 壓，且任兩相鄰之環狀電極具有不同之電壓。再者，任相 鄰之三個環狀電極中，居中之環狀電極具有最高或最低之 電壓，亦即此些環狀電極依序具有固定之高-低-高或低-高-低之電壓，以於此些環狀電極之間形成平行於基板之 〇 橫向電場。如此一來，框膠、液晶層甚至是配向膜所析出 之離子雜質經過擴散移動至此些環狀電極處，即被侷限在 橫向電場中，進而避免顯示了區域因離子雜質堆疊造成殘 像留存的問題，進一步提升了顯示品質。其次，藉由環狀 電極產生之電場來捕捉離子雜質，可增加液晶顯示面板中 框膠材料選用的彈性，降低了製程的難度。此外，由於此 些環狀電極可設置於彩色濾光片基板或薄膜電晶體基板 上，並且可於形成銦錫氧化物透明電極之圖案時同時定義 200933266 出此些環狀電極，不會增加製程步驟及成本，係可相容於 原有之液晶顯示面板的製程。 綜上所述，雖然本發明已以一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，當可作各種 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。The more stringent requirements of L7PA 200933266 have greatly increased the difficulty of material selection and have also significantly increased manufacturing costs. SUMMARY OF THE INVENTION In view of the above, the present invention provides a liquid crystal display panel and a liquid crystal display device using the same, which is used for providing a plurality of ring electrodes between a sealant and a display region, and between the ring electrodes The way in which the electric field is generated captures the ionic impurities deposited in the sealant to improve image retention and, in turn, enhance image quality. In addition, it has at least the advantages of increased material selection latitude, compatibility with traditional processes and structures. According to an aspect of the invention, a liquid crystal display panel is provided, comprising a substrate, a plurality of ring electrodes, and a frame. The substrate has a display area. The annular electrodes are disposed on the substrate and surround the display area. These ring electrodes have at least two different voltages. The sealant surrounds the loop electrodes. According to another aspect of the present invention, a liquid crystal display device is provided, comprising a liquid crystal display panel and a voltage source. The liquid crystal display panel comprises a substrate, a plurality of annular electrodes and a sealant. The substrate has a display area. The annular electrodes are disposed on the substrate and surround the display area. These ring electrodes have at least two different voltages. The sealant surrounds the ring electrodes. The voltage source is electrically connected to at least one of the ring electrodes to provide a voltage. In order to make the above description of the present invention more comprehensible, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings as follows. 7 200933266 [Embodiment] Liquid crystal display according to preferred embodiment of the present invention The device comprises at least a liquid crystal display panel and a voltage source. The liquid crystal display panel comprises a substrate, a plurality of annular electrodes and a frame glue. The annular electrodes and the sealant are sequentially disposed around the display area of the substrate from the inside to the outside. By applying at least two different voltages to the ring electrodes, a transverse electric field is generated between the ring electrodes to capture ion impurities. In the following detailed description of the embodiment, the annular electrodes are described by taking a first annular electrode, a second annular electrode and a third annular electrode as an example. Referring to Figure 1, there is shown a schematic view of a liquid crystal display device in accordance with a preferred embodiment of the present invention. The liquid crystal display device 1A includes a liquid crystal display panel 120 and an electric source 14 〇. The liquid crystal display panel 12 includes a substrate 122, a turn 124, an m electrode 126, a second ring electrode 127, and a third ring electrode 128. The substrate has a display area of 12% and is located at a central position on the substrate 120. The ring electrodes 1, 1 and 128 are placed on the substrate 122 and surround the display area 122a. The frame silicone 124 is disposed around the ring electrodes 126, m and 128. The ring electrodes 126' 127 and 128 have at least two different electrical characteristics, and any two adjacent annular electrodes of the two % electrodes 126, 127 and 128 have different voltages. Furthermore, the voltage source i4 is electrically connected to at least the annular electrodes 126, 127 and 128 t for supplying a voltage. In the present embodiment, the sealant 124 is preferably spaced apart from the display area 122a by a distance - such that the annular electrodes 126, m and 128 are disposed between the sealant 124 and the display area. In addition, the voltage source 14 〇 8 200933266 of the present embodiment is electrically connected to the display region 122a and the second ring-shaped electrode 127' to provide the second ring-shaped electrode 127 - the first fixed voltage VI. The voltage source 140 in this embodiment is, for example, a common voltage (common vo 11age) for providing the liquid crystal display panel 120. The liquid crystal display device 10 further includes an external voltage source 160 electrically connected to the first ring electrode 126 and the third ring electrode 128 for providing the first and third ring electrodes 126 and 128. The second fixed voltage V2 is different from the first fixed voltage VI. In this embodiment, the first fixed voltage VI is, for example, higher than the second fixed electric voltage V2, so that a lateral electric field E parallel to the substrate 122 can be generated between the electrodes 126, 127 and 128. The ion impurities resolved by the cracking of the sealant 124 are trapped in the electric field. The electrodes 126, 127, and 128 applied with a fixed voltage cause the ion impurities to laterally move and accumulate at the boundary of the high and low voltage regions, as in the edge of the second ring-shaped electrode 127 in this embodiment. That is, it is equivalent to causing the ion impurities to accumulate outside the display region 122a, and the problem that the ion impurities are diffused into the display region 122a and the image visible to the user is prevented from being lost, resulting in deterioration of image quality. Further, the connection relationship between the voltage source 140 and the first, second, and third ring electrodes 126, 127, and 128 is not limited to the above. In another embodiment, the voltage source 140 can also be electrically connected to the first and third ring electrodes 126 and 128. Please refer to FIG. 2, which is a schematic diagram showing the voltage source of FIG. 1 connected to different ring electrodes. The voltage source in FIG. 2 is electrically connected to the display area 122a, and is electrically connected to the first ring electrode 126 and the third ring electrode 128 for providing the first and third ring electrodes 126 and 128 first. 9 200933266 Fixed voltage VI. The external voltage source 160 is electrically connected to the second annular electrode 127 for providing the second fixed voltage V2 of the second ring electrode 127. The first fixed voltage VI is, for example, higher than the second fixed voltage V2, and a lateral electric field E parallel to the substrate 122 is also generated between the electrodes 126, 127 and 128 to capture ion impurities. In this embodiment, the first ring electrode 126 and the third ring electrode 128 are electrically connected to the same external voltage source 160, so that the first and third ring electrodes 126 and 128 have the same second fixed voltage V2. For example. However, the first and third ring electrodes 126 and 128 can also be respectively connected to different external voltage sources, such that the voltage of the first ring electrode 126 is different from the voltage 128 of the third ring electrode, that is, the rings. The voltages of the electrodes 126, 127 and 128 are all different. In the embodiment, the liquid crystal display panel 120 is exemplified by three annular electrodes 126, 127, and 128. However, the liquid crystal display panel 120 may also include three or more ring electrodes, as long as they are adjacent to each other. Different voltages are applied between the ring electrodes, and the adjacent three ring electrodes are sequentially provided with high-low-high or low-high-low voltages, and the uniformity can be used to limit the ion impurities to the sealant 124. And between the display areas 122a. Next, the substrate 12 2 in this embodiment may be, for example, a color filter substrate of the liquid crystal display panel 120. That is, the first ring-shaped electrode 126, the second ring-shaped electrode 127, and the third ring-shaped electrode 128 may be disposed on the color filter substrate. When the ring electrodes 126, 127 and 128 are disposed on the color filter substrate, it can be ensured that the ring electrodes 126, 127 and 128 do not affect the original pixel circuit on the thin film transistor substrate, and the display is maintained. Area 10 200933266 122a The normal display of each element. However, the first ring-shaped electrode 126, the second ring-shaped electrode 127, and the third ring-shaped electrode 128 may be disposed on the thin film transistor substrate. In addition, the ring electrodes 126, 127, and 128 can be formed in a conventional process by using a yellow etching process to form a pattern of indium tin oxide (In-Tin Oxide) transparent electrodes. Forming, which does not increase the process steps and costs, has the advantage of being compatible with the process of the conventional liquid crystal display panel. The liquid crystal display panel and the liquid crystal display device according to the preferred embodiment of the present invention include a liquid crystal display panel and a voltage source. The liquid crystal display panel includes a substrate, a plurality of ring electrodes, and a sealant. The annular electrodes and the frame glue are disposed around the display area of the substrate, and the annular electrodes are located between the display area and the sealant. The ring electrodes have at least two different voltages, and any two adjacent ring electrodes have different voltages. Furthermore, among the adjacent three ring electrodes, the center ring electrode has the highest or lowest voltage, that is, the ring electrodes sequentially have a fixed high-low-high or low-high-low voltage. A transverse electric field parallel to the substrate is formed between the annular electrodes. In this way, the ionic impurities precipitated in the sealant, the liquid crystal layer or even the alignment film are diffused and moved to the annular electrodes, that is, they are confined in the transverse electric field, thereby avoiding the display of the residual image due to the accumulation of ion impurities. The problem further improves the display quality. Secondly, by capturing the ionic impurities by the electric field generated by the ring electrode, the elasticity of the frame material in the liquid crystal display panel can be increased, and the process difficulty is reduced. In addition, since the ring electrodes can be disposed on the color filter substrate or the thin film transistor substrate, and the pattern of the indium tin oxide transparent electrode can be formed simultaneously, the ring electrodes are defined in 200933266, and the process is not increased. The steps and costs are compatible with the process of the original liquid crystal display panel. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
7PA 200933266 【圖式簡單說明】 第1圖繪示依照本發明較佳實施例之液晶顯示裝置之 示意圖；以及 第2圖繪示第1圖之電壓源連接於不同環狀電極之示 意圖。 【主要元件符號說明】 100 :液晶顯示裝置 ® 120 :液晶顯示面板 122 :基板 122a :顯示區域 124 :框膠 126 :第一環狀電極 127 :第二環狀電極 128 :第三環狀電極 140 :電壓源 © 160 :外部電壓源 E:橫向電場 VI :第一固定電壓 V2 :第二固定電壓 137PA 200933266 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a liquid crystal display device according to a preferred embodiment of the present invention; and FIG. 2 is a view showing a voltage source of FIG. 1 connected to different ring electrodes. [Main component symbol description] 100 : Liquid crystal display device ® 120 : Liquid crystal display panel 122 : Substrate 122 a : Display region 124 : Casing 126 : First ring-shaped electrode 127 : Second ring-shaped electrode 128 : Third ring-shaped electrode 140 : Voltage source © 160 : External voltage source E: Transverse electric field VI : First fixed voltage V2 : Second fixed voltage 13