1355528 [0001] [0002] [0003] [0004] [0005] 096103215 100年04月力日梭正替换頁 發明說明： 【發明所屬之技術領域】 本發明係關於一種平面顯示裝置。 【先前技術】 平面顯示裝置因其具有低輻射性、輕薄短小及耗電低等 特點，故於使用上日漸廣泛，且隨著相關技術之成熟及 創新，其種類亦曰益繁多。 一種先前技術所揭示之平面顯示裝置結構如圖1所示，該 平面顯示裝置1包括相對設置之一彩色濾光片基板11及一 薄膜電晶體基板12、一夾設於該二基板11、12間之液晶 層13。 於該彩色濾光片基板11靠近該液晶層1 3侧表面設置有一 彩色濾光層151，該彩色濾光層151包括複數彩色濾光單 元152，如紅色濾光單元、綠色濾光單元及藍色濾光單元 等。該複數彩色濾光單元152陣列排佈，且每二相鄰彩色 濾光單元152間設置有黑色遮光層153，藉由該黑色遮光 層153間隔相鄰之彩色濾光單元152。 當利用該平面顯示裝置1進行彩色顯示時，首先提供白光 依次穿過該薄膜電晶體基板12、該液晶層13及該彩色濾 光片基板11，其中當光線穿過該彩色濾光層151時，該彩 色濾光單元152將分別進行一過濾動作，經每一彩色濾光 單元152過濾後獲得紅光、綠光或者藍光中之任意一種單 色光，控制各單色光在每一彩色濾光單元152之強度，便 可調配出各個像素上之光色變化，進而達到該平面顯示 裝置1全彩色顯示之目的。 表單编號A0101 第3頁/共14頁 1003142102-0 1355528 10 0年.04月22日核正脊換頁 [0006] 該平面顯示裝置1實現全彩色顯示時，該黑色遮光層153 間隔二相鄰之彩色濾光單元152，有效避免光線自二相鄰 彩色濾光單元152之間穿過。但是因為該黑色遮光層153 具遮光性，其阻隔部份光線穿過該黑色遮光層153，該彩. 色濾光層151亦同時對光線會有相當大比例過濾，導致光 線在穿過整個彩色濾光片基板11後，各單色光之強度僅 為原白光強度之百分之二十左右，所以該平面顯示裝置1 之整體亮度亦對應大比例降低。另，顯示晝面之對比度 取決於白畫面下之顯示輝度與黑晝面下之顯示輝度比值 ，因為該黑色遮光層153阻隔光線穿過，所以該液晶顯示 裝置1在白畫面之顯示輝度不夠高，使得其對比度降低。 【發明内容】 [0007] 有鑑於此，提供一種提高顯示畫面顯示輝度及對比度之 平面顯示裝置實為必需。 [0008] 一種平面顯示裝置，其包括一第一基板、一與該第一基 板相對設置之第二基板及一位於該第一基板與第二基板 間之像素區域，其中該像素區域包括第一顯示區域及第 二顯示區域，在該第一顯示區域，該第一基板靠近液晶 層側之表面設置有機電激發光單元，在該第二顯示區域 ，該第一基板内侧之表面設置彩色濾光單元，且該有機 電激發光單元與該彩色濾光單元相鄰設置。 [0009] 與先前技術相比，本發明之平面顯示裝置在設置一有機 電激發光單元之顯示區域，藉由設置有機電激發光單元 之第一顯示區域阻隔自背光源射向該第一顯示區域，避 免光線自二相鄰像素區域之第二顯示區域之間穿過，同 096103215 表單编號Α0101 第4頁/共14頁 1003142102-0 1355528 100年.04月2:2日核正替¥頁 時該有機電激發光單元發光提高整個平面顯示裝置之顯 示輝度；另，因為該第一顯示區域之有機電激發光單元 發光，使得顯示畫面在白畫面與黑晝面下之顯示輝度比 值擴大，提高了顯示畫面之對比度，使該平面顯示裝置 具有良好之顯示效果。 【實施方式】 [0010] 請參閱圖2，係本發明平面顯示裝置一種較佳實施方式之 結構示意圖。該平面顯示裝置200包括一背光源210及一 與該背光源210疊合設置之液晶面板220。其中該平面顯 示裝置200以白色光源作為該背光源210，如平行間隔設 置之複數冷陰極螢光燈管或者陣列設置之複數發光二極 體等。.1 355 528 [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 [Prior Art] Because of its low radiation, light weight, short power consumption and low power consumption, flat display devices are becoming more and more widely used, and with the maturity and innovation of related technologies, their types are also numerous. The structure of the flat display device disclosed in the prior art is as shown in FIG. 1. The flat display device 1 includes a color filter substrate 11 and a thin film transistor substrate 12 disposed opposite to each other, and is sandwiched between the two substrates 11 and 12. The liquid crystal layer 13 between. A color filter layer 151 is disposed on the surface of the color filter substrate 11 adjacent to the liquid crystal layer 13. The color filter layer 151 includes a plurality of color filter units 152, such as a red filter unit, a green filter unit, and a blue color. Color filter unit, etc. The plurality of color filter units 152 are arranged in an array, and a black light shielding layer 153 is disposed between each of the two adjacent color filter units 152. The black light shielding layer 153 is spaced apart from the adjacent color filter units 152. When color display is performed by the flat display device 1, first, white light is sequentially supplied through the thin film transistor substrate 12, the liquid crystal layer 13, and the color filter substrate 11, wherein when light passes through the color filter layer 151, The color filter unit 152 performs a filtering operation, and filters each color filter unit 152 to obtain any one of red light, green light or blue light, and controls each color light in each color filter. The intensity of the light unit 152 can be used to adjust the color change of each pixel to achieve the full color display of the flat display device 1. Form No. A0101 Page 3 of 14 1003142102-0 1355528 10 0. 04月22日核正骨换页 [0006] When the flat display device 1 realizes full color display, the black light shielding layer 153 is spaced apart by two adjacent The color filter unit 152 effectively prevents light from passing between the two adjacent color filter units 152. However, since the black light shielding layer 153 is light-shielding, a part of the light passes through the black light shielding layer 153, and the color filter layer 151 also filters a considerable proportion of the light, so that the light passes through the entire color. After the filter substrate 11, the intensity of each monochromatic light is only about 20% of the original white light intensity, so that the overall brightness of the flat display device 1 is also largely reduced. In addition, the contrast of the display pupil surface depends on the display luminance ratio under the white screen and the display luminance ratio under the black pupil surface. Since the black light shielding layer 153 blocks the light from passing through, the display brightness of the liquid crystal display device 1 on the white screen is not high enough. , so that its contrast is reduced. SUMMARY OF THE INVENTION [0007] In view of the above, it is necessary to provide a flat display device that improves the display brightness and contrast of a display screen. [0008] A flat display device includes a first substrate, a second substrate disposed opposite the first substrate, and a pixel region between the first substrate and the second substrate, wherein the pixel region includes the first a display area and a second display area. In the first display area, an organic electroluminescence unit is disposed on a surface of the first substrate adjacent to the liquid crystal layer side, and a color filter is disposed on a surface of the first substrate inside the second display area And a unit, and the organic electroluminescent unit is disposed adjacent to the color filter unit. [0009] Compared with the prior art, the flat display device of the present invention is disposed in a display area of an organic electroluminescent light unit, and the first display area of the organic electroluminescent light unit is blocked from the backlight to the first display. Area, avoiding light passing between the second display areas of two adjacent pixel areas, same as 096103215 Form number Α0101 Page 4 / Total 14 pages 1003142102-0 1355528 100 years. April 2: 2 days nuclear replacement ¥ The organic electroluminescence light unit emits light to increase the display luminance of the entire flat display device; and, because the organic electroluminescence light unit of the first display region emits light, the display luminance ratio of the display screen under the white screen and the black surface is enlarged. The contrast of the display screen is improved, so that the flat display device has a good display effect. [Embodiment] [0010] Please refer to FIG. 2, which is a schematic structural view of a preferred embodiment of a flat display device of the present invention. The flat display device 200 includes a backlight 210 and a liquid crystal panel 220 disposed on the backlight 210. The flat display device 200 uses a white light source as the backlight 210, such as a plurality of cold cathode fluorescent tubes arranged in parallel or a plurality of light emitting diodes arranged in an array. .
[0011] 該液晶面板220包括一第一基板230、一與該第一基板 230相對設置之第二基板240及形成於該二基板230、240 間之像素區域250。該像素區域250包括相鄰之第一顯示 區域251及第二顯示區域252，該第一顯示區域251為有 機電激發光單元顯示區域，該第二顯示區域252為設置彩 色濾光單元2521之穿透式液晶顯示區域。 [0012] 於該第二顯示區域252中，自該第二基板240至該第一基 板230包括依次層疊設置之一彩色濾光單元2521、一透明 導電層253、一液晶層254及一像素電極256。其中該彩 色濾光單元2521可以為紅色濾光單元、綠色濾光單元或 者藍色濾光單元。該彩色濾光單元2521係採用顏料分散 法、染色法、電著法或者印刷法製作。 於該第一顯示區域251中，自該第二基板240至該第一基 096103215 表單编號A0101 第5頁/共14頁 1003142102-0 [0013] 1355528 .100年.04.月22日梭正替換頁 板230包括依次層疊.設置之一有機電激發光單元2510、一 電介質層2511、一透明導電層253、一液晶層254及一薄 膜電晶體層255。該有機電激發光單元2510與該像素區域 250第二顯示區域252之彩色濾光單元2521相鄰設置。該 電介質層2511係一電絕緣層。該透明導電層253由透明材 料製成，如氧化銦錫（Indium Tin Oxide，ITO)或氧化 銦鋅（Indium Zinc Oxide，IZ0)等。 [0014] 請參閱圖3，係該有機電激發光單元2510之結構示意圖。 該有機電激發光單元2510包括一靠近該電介質層2511之 金屬陰極2512及一與該金屬陰極2512相對設置之透明陽 極2518，在該金屬陰極2512内側依次設置電子注入層 2513及電子傳輸層2514，該透明陽極2518之内側依次設 置空穴注入層2517及空穴傳輸層2516，一有機發光材料 層2515設置於該空穴傳輸層2516與電子傳輸層2514之間 。其中該有機發光材料層2515可以作為產生白光之光源 。該電介質層2511間隔該有機電激發光單元2510與該透 明導電層253，使該金屬陰極2512與該透明導電層253彼 此絕緣，同時保證該有機電激發光單元2510之金屬陰極 2512平坦化，提高該有機電激發光單元2510之壽命。 [0015] 工作時，提供訊號驅動該背光源210產生白光並傳輸白光. 至該液晶面板220。同時提供訊號使該像素區域250之像 素電極256與該透明導電層253之間形成電場，該電場調 整液晶分子旋轉以控制白光之透過率。當白光進入該液 晶面板220經過該彩色濾光單元2521時，該彩色濾光單元 2521對白光進行過濾，獲得紅色、綠色或者藍色之單色 096103215 表單编號A0101 第6頁/共14頁 1003142102-0 1355528 -100'年.Ό4月22日梭正替換頁 光’且經過不同之彩色濾光單元2521獲得不同顏色之單 色光’當射向該有機電激發光單元251 〇時，藉由該金屬 陰極2512之阻隔作用遮擔該區域白光之透過。 [0016] 同時於該第一顯示區域251中，提供訊號使該有機電激發 光單元2510之金屬陰極2512與該透明陽極2518之間形成 電位差，空穴注入層2517與電子注入層2513分別產生大 量之空六及電子，其分別經過空穴傳輪層2516與電子傳 輸層2514之傳輸，於有機發光材料層2515中再結合 Uecoinbination)使有機發光材料釋放光子而發光。在 每一像素區域250内，該有機電激發光單元2510所發出白 光與背光源210產生之白光經過該彩色濾光單元2521後獲 得之單色光相互配合顯示一定.灰階之畫面。 [0017] 相較於先前技術，當該平面顯示裝置2〇〇顯示彩色畫面時 ’在每二相鄰像素區域25〇内，利用該第一顯示區域251 之有機電激發光單元2510取代先前技術之黑色遮光層， 阻擋白光自二相鄰第二顯示區域252之間穿過❾同時在每 一像素區域250内，該第一顯示區域251之有機電激發光 單元2510作為補充光源發出白光配合經過該第二顯示區 域252後產生之單色光顯示一定灰階之畫面，使得整個像 素區域250内之發光強度增加，故從整體上提高該液晶面 板220之顯示輝度。 [0018] 另，因為在白畫面下，該有機電激發光單元2510同時發 光’使得整個顯示面板220產生畫面之顯示輝度提高，根 據對比度之定義，因為白畫面下該液晶面板220之顯示輝 度與黑畫面下顯示輝度之比值擴大，故該液晶面板220顯 096103215 1003142102-0 第7頁/共14頁 表單編號A0101 1355528 100年.04月2:2日梭正替换頁 不畫面之對比度提尚。 [0019] 在該平面顯示裝置200中，藉由該有機電激發光單元2510 取代先前技術之黑色遮光層，使得該平面顯示裝置200保 持較高之顯示輝度及對比度，因此其顯示效果良好。 [0020] 綜上所述，本發明確已符合發明專利之要件，爰依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施例 ，本發明之範圍並不以上述實施例為限，舉凡熟習本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0021] 圖1係一種先前技術平面顯示裝置之結構示意圖。 [0022] 圖2係本發明平面顯示裝置之結構示意圖。 [0023] 圖3係圖2所示平面顯示裝置之有機電激發光單元結構示 意圖。 【主要元件符號說明】 [0024] 平面顯示裝置：200 [0025] 電子傳輸層：2514 [0026] 背光源：210 [0027] 有機發光材料層：2515 [0028] 液晶面板：220 [0029] 空穴傳輸層：2516 [0030] 第一基板：230 096103215 表單编號A0101 第8頁/共14頁 1003142102-0 1355528 100年04月日慘正替換頁 [0031] 空穴注入層：251 7 [0032] 第二基板：240 [0033] 透明陽極：2518 [0034] 像素區域：250 [0035] 第二顯示區域：252 [0036] 第一顯示區域：251 [0037] '彩色濾光單元：2521 [0038] 有機電激發光單元：2510 [0039] 透明導電層：253 [0040] 電介質層：2511 [0041] ·液晶層：254 [0042] 金屬陰極：2512 [0043] 薄膜電晶體層：255 [0044] 電子注入層：2513 [0045] 像素電極：256 096103215 表單编號A0101 第9頁/共14頁 1003142102-0[0011] The liquid crystal panel 220 includes a first substrate 230, a second substrate 240 disposed opposite the first substrate 230, and a pixel region 250 formed between the two substrates 230, 240. The pixel area 250 includes an adjacent first display area 251 and a second display area 252. The first display area 251 is an organic electroluminescent light unit display area, and the second display area 252 is disposed through the color filter unit 2521. Transmissive liquid crystal display area. [0012] In the second display region 252, a color filter unit 2521, a transparent conductive layer 253, a liquid crystal layer 254, and a pixel electrode are sequentially stacked from the second substrate 240 to the first substrate 230. 256. The color filter unit 2521 may be a red filter unit, a green filter unit or a blue filter unit. The color filter unit 2521 is produced by a pigment dispersion method, a dyeing method, an electrophoresis method, or a printing method. In the first display area 251, from the second substrate 240 to the first base 096103215, the form number A0101, page 5, total 14 pages, 1003142102-0 [0013] 1355528. 100 years. 04. The replacement page board 230 includes a plurality of organic electroluminescent light units 2510, a dielectric layer 2511, a transparent conductive layer 253, a liquid crystal layer 254, and a thin film transistor layer 255. The organic electroluminescent light unit 2510 is disposed adjacent to the color filter unit 2521 of the second display region 252 of the pixel region 250. The dielectric layer 2511 is an electrically insulating layer. The transparent conductive layer 253 is made of a transparent material such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZ0). [0014] Please refer to FIG. 3, which is a schematic structural diagram of the organic electroluminescent device 2510. The organic electroluminescent device 2510 includes a metal cathode 2512 adjacent to the dielectric layer 2511 and a transparent anode 2518 disposed opposite the metal cathode 2512. An electron injection layer 2513 and an electron transport layer 2514 are sequentially disposed inside the metal cathode 2512. A hole injection layer 2517 and a hole transport layer 2516 are sequentially disposed inside the transparent anode 2518, and an organic light-emitting material layer 2515 is disposed between the hole transport layer 2516 and the electron transport layer 2514. The organic light-emitting material layer 2515 can be used as a light source for generating white light. The dielectric layer 2511 is spaced apart from the transparent conductive layer 253 to insulate the metal cathode 2512 from the transparent conductive layer 253, thereby ensuring planarization of the metal cathode 2512 of the organic electroluminescent device 2510. The life of the organic electroluminescent unit 2510. [0015] In operation, a signal is provided to drive the backlight 210 to generate white light and transmit white light to the liquid crystal panel 220. At the same time, a signal is provided to form an electric field between the pixel electrode 256 of the pixel region 250 and the transparent conductive layer 253, which adjusts the rotation of the liquid crystal molecules to control the transmittance of white light. When the white light enters the liquid crystal panel 220 and passes through the color filter unit 2521, the color filter unit 2521 filters the white light to obtain a red, green or blue color 096103215. Form No. A0101 Page 6 of 14 page 1003142102 -0 1355528 -100' years. On April 22, the shuttle is replacing the page light 'and obtains monochromatic light of different colors through different color filter units 2521' when it is directed to the organic electroluminescent light unit 251 , The barrier action of the metal cathode 2512 shields the transmission of white light in the region. [0016] In the first display region 251, a signal is provided to form a potential difference between the metal cathode 2512 of the organic electroluminescent device 2510 and the transparent anode 2518, and the hole injection layer 2517 and the electron injection layer 2513 respectively generate a large amount. The space hexa and the electrons are respectively transmitted through the hole transport layer 2516 and the electron transport layer 2514, and combined with the Uecoinbination in the organic light-emitting material layer 2515 to cause the organic light-emitting material to emit photons to emit light. In each of the pixel regions 250, the white light emitted by the organic electroluminescent light unit 2510 and the monochromatic light obtained by the white light generated by the backlight 210 passing through the color filter unit 2521 cooperate to display a certain grayscale image. [0017] Compared to the prior art, when the flat display device 2 〇〇 displays a color picture 'in every two adjacent pixel regions 25 ,, the organic electroluminescent light unit 2510 using the first display region 251 replaces the prior art The black light shielding layer blocks the white light from passing between the two adjacent second display regions 252 while being in each pixel region 250. The organic electroluminescent light unit 2510 of the first display region 251 acts as a complementary light source to emit white light. The monochromatic light generated after the second display area 252 displays a certain gray scale picture, so that the intensity of illumination in the entire pixel area 250 is increased, so that the display luminance of the liquid crystal panel 220 is improved as a whole. [0018] In addition, since the organic electroluminescent light unit 2510 simultaneously emits light under the white screen, the display brightness of the entire display panel 220 is increased. According to the definition of the contrast, the display luminance of the liquid crystal panel 220 under the white screen is different. The ratio of the luminance displayed in the black screen is enlarged, so the liquid crystal panel 220 is displayed 096103215 1003142102-0 page 7 / 14 pages form number A0101 1355528 100 years. April 2: 2 day shuttle is replacing the page without the contrast of the picture. In the flat display device 200, the organic electroluminescent light unit 2510 replaces the black light-shielding layer of the prior art, so that the flat display device 200 maintains a high display luminance and contrast, and thus the display effect is good. [0020] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0021] FIG. 1 is a schematic structural view of a prior art flat display device. 2 is a schematic structural view of a flat display device of the present invention. 3 is a schematic view showing the structure of an organic electroluminescent unit of the flat display device shown in FIG. 2. [Main component symbol description] [0024] Flat display device: 200 [0025] Electron transport layer: 2514 [0026] Backlight: 210 [0027] Organic light-emitting material layer: 2515 [0028] Liquid crystal panel: 220 [0029] Hole Transport layer: 2516 [0030] First substrate: 230 096103215 Form number A0101 Page 8 / Total 14 pages 1003142102-0 1355528 100 April 2004 Misplaced replacement page [0031] Hole injection layer: 251 7 [0032] Second substrate: 240 [0033] Transparent anode: 2518 [0034] Pixel region: 250 [0035] Second display region: 252 [0036] First display region: 251 [0037] 'Color filter unit: 2521 [0038] Organic electroluminescent device: 2510 [0039] Transparent conductive layer: 253 [0040] Dielectric layer: 2511 [0041] Liquid crystal layer: 254 [0042] Metal cathode: 2512 [0043] Thin film transistor layer: 255 [0044] Injection layer: 2513 [0045] Pixel electrode: 256 096103215 Form number A0101 Page 9 / Total 14 pages 1003142102-0