1305926 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種電漿顯示面板，特別是提高電漿顯示面板色溫 之顯不電極結構。 【先前技術】 電漿顯示面板(Plasma Display Panel, PDP)為一種利用螢 光層發光的面板，施加電壓於顯示電極上，使惰性氣體放電產 • 生紫外光，紫外光再激發螢光粉後產生可見光。 第一圖為習知之電漿顯示面板的結構圖，包含前板及後板 兩大部分構成，為易於理解將電漿顯示面板區分列方向及行方 向。前板包含一玻璃基板100、介電層200及保護層300。依 列方向在玻璃基板100上形成複數個平行之顯示電極，任一顯 示電極包含一電極對，電極對中之任一電極包含氧化銦錫 (Indium Tin Oxide, ITO)構成之透明電極及以金屬形成於透明 電極上之輔助電極（Auxiliary Electrode, BUS)，即電極對分別 包含共通電極210及其上之輔助電極230與掃描電極220及其 ® 上之輔助電極240，在顯示電極上則為介電層200及保護層 300 ° 後板包含一玻璃基板600、介電層500及阻隔壁410(barrier ribs，RIBs)，破璃基板600上依行方向形成複數條分離且平行 之定址電極51〇，介電層500設置於定址電極510上’在介電 層500上’兩相鄰之定址電極51〇間形成阻隔壁410 ’在兩相 鄰阻隔壁410之間形成螢光層42〇。 接合前板與後板，於相鄰之阻隔壁410間填充惰性氣體（圖 上未示），如此在顯示電極及阻隔壁410間形成具網狀的結構， 1305926 . 每一網格即所謂的放電晶胞(cell)，螢光層420為利用紅色、 綠色及藍色之螢光體依序重複排列形成於阻隔壁41〇間，如此 每三個連續之放電晶胞即形成一畫素。 第一圖為色溫座標圖7〇〇,顏色座標71〇、720、730及740 分別為白色（W)、紅色(R)、綠色（G)及藍色(B)之色溫，根據配 色公式 W(x，y) = rxR(x，y) + gxG(x，y) + bxB(x，y),其中 w(x，y) 表示在色溫座標中該點的白色色溫’ r、g、b分別為紅色、綠 色、藍色焭度及R(x，y)、G(x,y)、B(x，y)為紅色、綠色、藍色 頂點的色/m座彳示之該點色溫，透過不同的顏色比例及加強亮度 ©即可提高色溫。 第二圖為單一放電晶胞的剖視圖，為便於理解，將顯示電 極旋轉90度。利用共通電極210及掃描電極220放電解離惰 性氣體，解離後之離子狀態及其他惰性氣體原子引發連續離子 化現象，定址電極510寫入資料時，使離子與電子結合發出之 紫外光激發螢光層420而射出可見光。 美國6838825號專利，請參考第四圖畫素的剖視圖，為便 於理解，將顯示電極旋轉90度。利用在同一晝素中不同顏色 # 的放電晶胞不等同的大小，調整各顏色的比例取得高色溫。但 一般紅色及綠色放電晶胞較小，相對亮度較小、定址較困難及 因為放電晶胞大小不對稱不易製作。 美國6867545號專利，請參考第五圖放電晶胞剖視圖，為 便於理解將顯示電極旋轉90度。與第三圖不同之處在於在阻 隔壁410出光面上方形成一黑色條紋25〇降低開口率（aperture rate)，抑制紅光及綠光至高色溫，但相對降低發光效率。 美國6255779號專利，請參考第六圖單一畫素800之上視 透視圖’辅助電極230、240與透明電極210、220分開，利用 1305926 、242連接，增加開口率提高亮度，但對色溫 顯示計料到高色溫及高發纽率的 【發明内容】 衆顯示面板的顯示電極結構包含透明電極部分及不透1305926 IX. Description of the Invention: [Technical Field] The present invention relates to a plasma display panel, and more particularly to a display electrode structure for improving the color temperature of a plasma display panel. [Prior Art] A plasma display panel (PDP) is a panel that emits light by using a fluorescent layer, and applies a voltage to the display electrode to discharge an inert gas to generate ultraviolet light, and the ultraviolet light re-energizes the phosphor powder. Produces visible light. The first figure is a structural view of a conventional plasma display panel, which comprises two parts, a front plate and a rear plate. For easy understanding, the plasma display panel is divided into a column direction and a row direction. The front plate includes a glass substrate 100, a dielectric layer 200, and a protective layer 300. A plurality of parallel display electrodes are formed on the glass substrate 100 in the column direction, and any of the display electrodes includes an electrode pair, and any one of the electrode pairs includes a transparent electrode made of indium tin oxide (ITO) and a metal An auxiliary electrode (BUS) formed on the transparent electrode, that is, the electrode pair respectively includes the common electrode 210 and the auxiliary electrode 230 and the scan electrode 220 and the auxiliary electrode 240 on the surface thereof, and is displayed on the display electrode. The electrical layer 200 and the protective layer 300° include a glass substrate 600, a dielectric layer 500, and barrier ribs 410 (RIBs). The plurality of separated and parallel address electrodes 51 are formed on the glass substrate 600 in the row direction. The dielectric layer 500 is disposed on the address electrode 510 to form a barrier layer 410 between the two adjacent address electrodes 51 on the dielectric layer 500. A phosphor layer 42 is formed between the two adjacent barrier walls 410. The front plate and the rear plate are joined, and an inert gas (not shown) is filled between the adjacent barrier walls 410, so that a mesh structure is formed between the display electrode and the barrier wall 410, 1305926. Each grid is called The discharge cell (cell), the phosphor layer 420 is formed by sequentially repeating the arrangement of the phosphors of red, green and blue between the barrier walls 41, so that every three consecutive discharge cells form a pixel. The first picture shows the color temperature coordinate map 7〇〇, and the color coordinates 71〇, 720, 730, and 740 are the color temperatures of white (W), red (R), green (G), and blue (B), respectively, according to the color matching formula W. (x,y) = rxR(x,y) + gxG(x,y) + bxB(x,y), where w(x,y) represents the white color temperature 'r,g,b at that point in the color temperature coordinate The color temperature of red, green, blue, and R(x, y), G(x, y), and B(x, y) are red, green, and blue vertices. The color temperature can be increased by different color ratios and enhanced brightness. The second figure is a cross-sectional view of a single discharge cell, which is rotated 90 degrees for ease of understanding. The common electrode 210 and the scan electrode 220 are used to discharge and dissociate the inert gas, and the dissociated ion state and other inert gas atoms initiate continuous ionization. When the address electrode 510 writes data, the ultraviolet light is excited by the ion and electron to excite the phosphor layer. 420 emits visible light. For the US Pat. No. 6,838,825, please refer to the cross-sectional view of the fourth picture element. For ease of understanding, the display electrode is rotated by 90 degrees. By using the size of the discharge cells of different colors # in the same pixel, the ratio of each color is adjusted to obtain a high color temperature. However, the red and green discharge cells are generally small, the relative brightness is small, the addressing is difficult, and the size of the discharge cell is not easy to fabricate. For the US Pat. No. 6,687,545, please refer to the sectional view of the discharge cell of the fifth figure, and the display electrode is rotated by 90 degrees for easy understanding. The difference from the third figure is that a black stripe 25 is formed above the light-emitting surface of the barrier wall 410 to reduce the aperture rate, suppressing red light and green light to high color temperature, but relatively reducing the luminous efficiency. U.S. Patent No. 6,255,779, please refer to FIG. 6 for a single pixel 800. The auxiliary electrodes 230 and 240 are separated from the transparent electrodes 210 and 220, and are connected by 1305926 and 242 to increase the aperture ratio and increase the brightness, but the color temperature display meter [Inventive content] The display electrode structure of the display panel includes a transparent electrode portion and is impervious
2輔助電極部分，透明電極可以誘發再激發而增加亮度，輔 助電極則可遮住光降低開σ率而抑制亮度，本發明之一實施例 ^透明電極及輔助電極上形成突㈣構以達到娜顏色的亮 度比例的目的。 本發明之—實施例在透明電極上製作—相對於放電晶胞 、犬出結構，用以誘發放電晶胞之可見光，藉以提高畫素中此 放電晶胞的發光效率。2 auxiliary electrode portion, the transparent electrode can induce re-excitation to increase the brightness, and the auxiliary electrode can block the light to reduce the σ rate and suppress the brightness. In one embodiment of the present invention, the transparent electrode and the auxiliary electrode form a protrusion (four) to achieve Na The purpose of the brightness ratio of the color. The embodiment of the present invention is fabricated on a transparent electrode - relative to the discharge cell and the canine structure to induce visible light of the discharge cell, thereby improving the luminous efficiency of the discharge cell in the pixel.
一連接突觸232 的配置則未處理 ★本發明之一實施例在輔助電極上製作一相對於放電晶胞 的突出結構，用以遮蓋放電晶胞抑制開口率，藉以調整同一畫 素中紅色、綠色及藍色放電晶胞的亮度比例。 ^本發明之一實施例利用透明電極及輔助電極的設計，不需 製作不同大小之放電晶胞以增加製程的困難度，或於放電晶胞 二側阻隔壁上方製作黑色條紋遮住光犧牲發光效率換取高色 溫。 <本發明的另一個功效是由於輔助電極的面積因突出結構 的設計而增大且突出於電晶胞區，易與定址電極產生^址之功 能。 1305926 【實施方式】 電漿顯示面板利用離子與電子結合放出之紫外光激發放 電晶胞(cell)内之螢光粉而射出可見光，一個畫素(Pixel)内包含 紅色、綠色及藍色放電晶胞，根據國際電視系統協會(National Television System Committee，NTSC)配色規則提高色溫必須提 高亮度及各種顏色以適當的比例配合，在一般電漿顯示面板中 一方面降低紅光及綠光之比例，一方面提高亮度以提高色溫。 電漿顯示面板之顯示電極包含透明電極一般由導電的氧 化銦錫（Indium Tin Oxide, ITO)製成及由金屬製成之輔助電極 • (Auxiliary Electrode，BUS)，透明電極具有誘發光的功能，而 輔助電極因不透明可以用來調整開口率，適當設計將獲得高色 溫之面板。 第七圖為一實施例之單一放電晶胞的俯視透視圖。放電晶 胞810出光面上方’輔助電極230、240位於透明電極之兩側 且與透明電極呈上下重疊的位置關係，透明電極由平行且彼此 分離之共通電極210及掃描電極220所構成，輔助電極230、 240具有突出結構231、241，且向兩透明電極的中心延伸。 • 輔助電極230、240由金屬製成，於一實施例中，包含有 鉻/銅/鉻或是銀金屬材料。輔助電極23〇、24〇的突出結構23卜 241將增加不透光之面積而抑制了該放電晶胞81〇的顏色比 例，其突出結構形狀不拘，可能為方形、圓形、三角形或為網 狀之構造。 第八圖為另一實施例之單一放電晶胞的俯視透視圖，輔助 電極230、240位於透明電極之兩側，透明電極由平行且彼此 分離之共通電極210及掃插電極22〇所構成，透明電極21〇、 220具突出結構211、221。 1305926 . 透明電極常被應用於面板上的電極設計，透明電極具誘發 光的功能，透明電極的突出結構211、221具增加該放電晶胞 830亮度的功能，突出結構211,221的幾何形狀不拘，可能為 方形、圓形、三角形或為網狀之構造，但面積依配色比例及其 誘發的效能製成。 第九圖為一實施例的單一畫素的俯視透視圖，說明單一畫 素80的透視圖，便於了解其整個晝素的顯示電極結構，後板 上之阻隔壁410與前板上的顯示電極構成一畫素，其中阻隔壁 410將單一畫素80區隔為三個放電晶胞810、820、830，在一 ♦ 放電晶胞830上，顯示電極的透明電極210、220具突出結構 211及221以誘發光激發以增加該放電晶胞830之配色比例。 而在放電晶胞810、820上，輔助電極230、240具突出結構 231、241以抑制放電晶胞之配色比例，如此可達到高色溫及 增加發光效率。 舉例說明，在電漿顯示面板中根據NTSC的配色規則，一 般會抑制紅光及綠光及加強藍光以達到高色溫，利用此設計即 可以在跨於藍色放電晶胞上之透明電極增加突出結構誘發光 激發，而在紅色及綠色放電晶胞上的輔助電極增加突出結構抑 制紅光及綠光，畫素内之放電晶胞的電極突出結構依據適當比 例設計可以達到較好之發光效率及高色温。 第十圖為依第九圖上EE’之截面剖視圖，說明輔助電極突 出結構更具有加強定址功能，為便於理解，將顯示電極旋轉 90度。位於前玻璃基板100上之輔助電極240與位於後玻璃 基板600上之定址電極510之距離430(h)，此距離為傳統輔助 電極240之距離，輔助電極230之突出結構231與定址電極 510之距離440(h’）。h’< h表示其輔助電極之面積增大，定址 電極較易於定址。 1305926 唯以上所述，僅為本發明之較佳實施例，當不能以之限制 本發明的範圍。即大凡依本發明申請專利範圍所做之均等變化 及修飾，仍將不失本發明之要義所在，亦不脫離本發明之精神 及範圍，故都應視為本發明之進一步實施狀況。 【圖式簡單說明】 第一圖習知之電漿顯示面板結構圖 第二圖習知之色溫座標圖 第三圖先前技術之放電晶胞剖視圖 第四圖先前技術之晝素剖視圖 第五圖先前技術之放電晶胞剖視圖 第六圖先前技術之畫素截面透視圖 第七圖本發明之一實施例的放電晶胞之顯示電極俯視透視圖 第八圖本發明之另一實施例的放電晶胞之顯示電極俯視透視 圖 第九圖本發明之一實施例的畫素之顯示電極俯視透視圖 第十圖為第九圖知EE’剖線之截面剖視圖 【主要元件符號說明】 100 玻璃基板 600 玻璃基板 200 介電層 700 顏色座標圖 210 共通電極 710 顏色座標 211 突出結構 720 顏色座標 掃描電極 730 顏色座標 突出結構 740 顏色座標 輔助電極 800、 80畫素 突出結構 810 放電晶胞 連接突觸 820 放電晶胞 輔助電極 830 放電晶胞 突出結構 410 阻隔壁 連接突觸 420 榮光層 黑色條紋 430 ' 440距離 保護層 500 介電層 定址電極 11The configuration of a connection synapse 232 is unprocessed. One embodiment of the present invention forms a protruding structure on the auxiliary electrode with respect to the discharge cell for covering the discharge cell to suppress the aperture ratio, thereby adjusting the red color in the same pixel. The ratio of the brightness of the green and blue discharge cells. An embodiment of the present invention utilizes the design of a transparent electrode and an auxiliary electrode, so that it is not necessary to fabricate discharge cells of different sizes to increase the difficulty of the process, or to form black stripes on the two side barrier walls of the discharge cell to block the light sacrificial illumination. Efficiency is exchanged for high color temperature. <Another effect of the present invention is that since the area of the auxiliary electrode is increased by the design of the protruding structure and protrudes from the electric cell region, it is easy to function with the address electrode. 1305926 [Embodiment] A plasma display panel emits visible light by emitting ultraviolet light in combination with ions and electrons to emit visible light, and a pixel (Pixel) contains red, green, and blue discharge crystals. Cell, according to the National Television System Committee (NTSC) color matching rules to increase the color temperature must increase the brightness and various colors in an appropriate proportion, in the general plasma display panel on the one hand to reduce the proportion of red and green light, In terms of brightness, the color temperature is increased. The display electrode of the plasma display panel comprises a transparent electrode, generally made of conductive indium tin oxide (ITO) and an auxiliary electrode made of metal (Auxiliary Electrode, BUS), and the transparent electrode has a function of inducing light. The auxiliary electrode can be used to adjust the aperture ratio due to opacity, and a panel that achieves a high color temperature is appropriately designed. The seventh figure is a top perspective view of a single discharge cell of an embodiment. Above the light-emitting surface of the discharge cell 810, the auxiliary electrodes 230 and 240 are located on both sides of the transparent electrode and overlap with the transparent electrode. The transparent electrode is composed of a common electrode 210 and a scan electrode 220 which are parallel and separated from each other. 230, 240 have protruding structures 231, 241 and extend toward the center of the two transparent electrodes. • The auxiliary electrodes 230, 240 are made of metal, and in one embodiment, comprise a chromium/copper/chromium or silver metal material. The protruding structure 23 241 of the auxiliary electrodes 23〇, 24〇 will increase the opaque area and suppress the color ratio of the discharge unit 81〇, and the protruding structure shape is not limited, and may be square, circular, triangular or mesh. The structure of the shape. 8 is a top perspective view of a single discharge cell of another embodiment, the auxiliary electrodes 230, 240 are located on both sides of the transparent electrode, and the transparent electrode is composed of a common electrode 210 and a sweep electrode 22 that are parallel and separated from each other. The transparent electrodes 21, 220 have protruding structures 211, 221. 1305926 . The transparent electrode is often applied to the electrode design on the panel, the transparent electrode has the function of inducing light, and the protruding structures 211 and 221 of the transparent electrode have the function of increasing the brightness of the discharge unit cell 830, and the geometric shapes of the protruding structures 211 and 221 are not limited, and It is a square, circular, triangular or mesh structure, but the area is made according to the color ratio and its induced efficiency. The ninth drawing is a top perspective view of a single pixel of an embodiment, illustrating a perspective view of a single pixel 80 for facilitating understanding of the display electrode structure of the entire pixel, the barrier wall 410 on the rear panel and the display electrode on the front panel. Forming a pixel, wherein the barrier wall 410 partitions the single pixel 80 into three discharge cells 810, 820, and 830. On a ♦ discharge cell 830, the transparent electrodes 210 and 220 of the display electrode have a protruding structure 211 and 221 induces photoexcitation to increase the color ratio of the discharge cell 830. On the discharge cells 810, 820, the auxiliary electrodes 230, 240 have protruding structures 231, 241 to suppress the color matching ratio of the discharge cells, so that high color temperature and increased luminous efficiency can be achieved. For example, in the plasma display panel, according to the color matching rule of NTSC, red and green light and blue light are generally suppressed to achieve a high color temperature, and the design can increase the protrusion on the transparent electrode across the blue discharge cell. The structure induces photoexcitation, while the auxiliary electrode on the red and green discharge cells increases the protruding structure to suppress red light and green light, and the electrode protruding structure of the discharge cell in the pixel can achieve better luminous efficiency according to an appropriate ratio design. High color temperature. The tenth figure is a cross-sectional view of the EE' according to the ninth figure, illustrating that the auxiliary electrode protruding structure has a more enhanced addressing function, and the display electrode is rotated by 90 degrees for ease of understanding. The distance between the auxiliary electrode 240 on the front glass substrate 100 and the address electrode 510 on the rear glass substrate 600 is 430 (h), which is the distance of the conventional auxiliary electrode 240, and the protruding structure 231 of the auxiliary electrode 230 and the address electrode 510 Distance 440 (h'). h'<h indicates that the area of the auxiliary electrode is increased, and the address electrode is easier to address. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. It is to be understood that the scope of the present invention is not limited by the spirit and scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conventional plasma display panel structure diagram. FIG. 2 is a conventional color temperature coordinate map. FIG. 3 is a prior art discharge cell cross-sectional view. FIG. 6 is a cross-sectional view of a prior art pixel. FIG. 7 is a perspective view of a display cell of a discharge cell of an embodiment of the present invention. FIG. 8 is a view showing a discharge cell of another embodiment of the present invention. FIG. 9 is a cross-sectional view of a display electrode of a pixel according to an embodiment of the present invention. FIG. 10 is a cross-sectional view of a EE' cross section of the ninth figure. [Main component symbol description] 100 Glass substrate 600 Glass substrate 200 Dielectric layer 700 color coordinate map 210 common electrode 710 color coordinate 211 protruding structure 720 color coordinate scanning electrode 730 color coordinate protruding structure 740 color coordinate auxiliary electrode 800, 80 pixel protruding structure 810 discharge cell connection synapse 820 discharge cell assist Electrode 830 discharge cell protruding structure 410 barrier wall connection synapse 420 glory layer black stripe 430 ' 440 distance protection layer 500 dielectric layer address electrode 11