WO1999019858A1 - Afficheur plat - Google Patents

Afficheur plat Download PDF

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Publication number
WO1999019858A1
WO1999019858A1 PCT/CN1998/000213 CN9800213W WO9919858A1 WO 1999019858 A1 WO1999019858 A1 WO 1999019858A1 CN 9800213 W CN9800213 W CN 9800213W WO 9919858 A1 WO9919858 A1 WO 9919858A1
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WO
WIPO (PCT)
Prior art keywords
conductive
display
display element
conductive layer
strip
Prior art date
Application number
PCT/CN1998/000213
Other languages
English (en)
French (fr)
Inventor
Rong Zhou
Original Assignee
Rong Zhou
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rong Zhou filed Critical Rong Zhou
Priority to AU27021/99A priority Critical patent/AU2702199A/en
Publication of WO1999019858A1 publication Critical patent/WO1999019858A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces

Definitions

  • the present invention relates to a flat display, and particularly to an occasion where a large screen display is required.
  • a large screen display For example, it can be applied to large-screen wall-mounted TVs, computer large-screen flat-screen monitors, indoor and outdoor large-area dynamic information display boards (such as information display for stock exchanges), and so on.
  • the invention can also be applied to portable small display screens (such as information display of household appliances and meters). Background technique
  • Flat displays can be divided into liquid crystal displays, plasma displays, electroluminescent displays, and electrochromic displays.
  • an electroluminescent display and an electrochromic display are vapor-deposited or coated on a glass substrate to form a film, and then an electrode and a light-emitting unit are processed by an etching method.
  • the size of the display is limited by substrate size and process.
  • the display element is an electroluminescence (EL) element or an electrochromic element (ECD). Its working principle is to make two conductive layers on both sides of the electroluminescent material or electrochromic material film by dry method (such as evaporation) or wet method (such as plating or coating), and one of the conductive layers is a transparent conductive layer. .
  • a light-emitting unit array (pixel) is formed by coating, evaporation, and etching or printing processes. Each unit is driven by parallel wires arranged vertically and horizontally. Due to the limitations of evaporation and coating processes, it is difficult to enlarge the size of the display.
  • An object of the present invention is to provide a process that can be simplified in order to reduce costs Monitor.
  • Another object of the present invention is to provide a large-screen display, which does not need to be limited by the existing display manufacturing method, and can enlarge the display screen of the display to a large size.
  • the present invention provides a flat display including: a plurality of first signal lines parallel to each other and arranged at the same interval; a plurality of second signal lines parallel to each other and arranged at the same interval, the second signal line and the first The signal lines cross at right angles; the display unit; wherein one of the first signal line and the second signal line is a strip-shaped display element, and the other is a conductive strip with at least one side conductive, and the strip-shaped display elements are in order
  • the display unit includes a back conductive layer, a light emitting or color developing layer composed of an electroluminescent or electrochromic material on the back conductive layer, and a transparent conductive layer covering the entire light emitting or color developing material layer.
  • the display unit includes a band-shaped display element. The back conductive layer and conductive wire are formed in ohmic contact with each other at the intersection.
  • the display of the present invention is made by adding a band-shaped display element with necessary auxiliary conductive wires and insulation wires, and interweaving the warp and weft elements with each other by a weaving method. When weaving is difficult, it can also be tiled.
  • the structure is composed of woven or tiled bar-shaped display elements to form a display plane. Beneficial effect
  • a strip-shaped display element and a conductive wire are used, it can be processed using a conventional strip-shaped, roll-shaped processing process or a double-reel process. In this way, the requirements for the film formation process are reduced, and the uniformity of the film layer is improved.
  • the present invention can be implemented using a weaving process, there is no restriction on the size of the display as long as the driving capability can be achieved, so it is relatively easy to produce a large-screen display without being limited by the prior art.
  • FIG. 1A shows a front structure of a strip display element used in the present invention
  • FIG. 1B is a back structure of the display element
  • FIG. 1C is a cross-sectional view of the display element A-A in FIG. 1A;
  • FIG. 2 is a schematic structural diagram of an embodiment of the present invention.
  • FIG. 3A is a schematic structural diagram of another embodiment of the present invention, and FIG. 3B is a cross-sectional view of the conductive belt A-A in FIG. 3A;
  • FIG. 4 is a schematic structural diagram of another embodiment of the present invention. Best way to implement the invention
  • FIG. 1A to 1C The detailed structure of the band-shaped display element 1 of the present invention is shown in Figs. 1A to 1C.
  • the band-shaped display element 1 is a flat band with a sandwich structure, and is composed of a transparent conductive film 5 on the front surface and a conductive layer 4 on the rear surface sandwiching a light-emitting or color-developing material layer 3 therebetween.
  • the entire display element is a thin strip.
  • the back conductive layer 4 to be in contact with the conductive tape (electrode) is a discontinuous structure, and extremely narrow lateral slits 6 are penetrated thereon at substantially equal intervals, thereby becoming mutually insulated along the length direction of the display element.
  • the block-like region structure is such that each block-like region of the adjacent back conductive layer 4 is insulated from each other.
  • the gap 6 may be filled with an insulating material to enhance insulation.
  • Reference numeral 2 is a conductive tape made of a conductive material, and the conductive tape is a thin strip of conductor.
  • the display in FIG. 2 is a tiled arrangement.
  • the display elements 1 that are parallel to each other and arranged at substantially the same pitch cross at right angles so that the back conductive layers thereof are in contact with conductive strips that are also parallel to each other and arranged at substantially the same pitch, thereby forming a display array.
  • Each intersection is a display unit (or pixel).
  • the driving circuit is connected to the strip display element and the conductive tape, respectively. When the transparent conductive film is grounded and the back conductive layer is connected to the driving voltage, the lateral gap 6 of the back conductive layer ensures that the display only occurs in the area where the back conductive layer is energized.
  • the transparent conductive layer and conductive tape of the display element are the vertical and horizontal address electrodes of the display array (pixel).
  • the current flows from the transparent conductive layer 5 through the electroluminescent film or electrochromic film 3, and the back conductive layer 4 flows to the conductive tape.
  • the conductive tape and the conductive layer on the back of the strip-shaped display element can be bonded or soldered to maintain contact (conduction) between them.
  • the display element 1 may be an electroluminescence (EL) element or an electrochromic (ECD) element.
  • Two conductive layers 4 and 5 are made on both sides of the electroluminescent material or electrochromic material film by dry method (such as evaporation) or wet method (such as plating or coating), and the conductive layer 5 is a transparent conductive layer.
  • dry method such as evaporation
  • wet method such as plating or coating
  • FIG. 3A is a schematic structural diagram of another embodiment of the present invention.
  • the structure uses a weaving structure. This weaving method makes the display elements staggered.
  • the strip weaving process can be evaporated or coated only on narrow strip materials and can be processed continuously. Due to the inherent characteristics of the weaving process, weaving can be performed continuously. Therefore, the purpose of producing large-screen displays can be achieved by producing long-length display elements.
  • this embodiment uses the structure of the conductive tape shown in FIG. 3B.
  • the conductive tape 2 is composed of a two-layer structure, one side is conductive and the other side is insulated, 7 in the figure is a conductive surface, and 8 is an insulating surface.
  • the conductive surface 7 of the conductive tape 2 and the back conductive layer of the display element 1 are contacted (conducted) to form a display unit, or the insulating surface 8 of the conductive tape 2 is brought into contact with the transparent conductive film of the display element 1.
  • FIG. 4 is another implementation of the knitted structure.
  • the display consists of display elements Components, conductive tape and insulated wire.
  • 9 is an insulated wire
  • the insulated wire is a strip-shaped insulator thin strip.
  • the warp direction is a strip-shaped display element and insulated wire arranged at intervals
  • the weft direction is a conductive strip and insulated wire arranged at intervals.
  • the conductive tape forms an ohmic contact with the conductive layer on the back of the strip display element, and the insulated wires arranged at intervals ensure the insulation between the conductive strips and the insulation between the strip display elements.
  • the display element and the conductive tape are combined by weaving together with an insulation wire 9, as shown in the figure. Adjusting the width ratio between the conductive tape, the strip display element and the insulated wire can adjust the utilization efficiency of the strip display element.
  • an insulated wire braided with a lead wire is used to form a shield around the display element to control the influence of the electromagnetic field.
  • the display of the present invention can use a variety of display elements, such as an electroluminescent element and an electrochromic element. Since the display element is a separate band-shaped element, when a suitable narrow-light language display element is not available, a color display can be achieved by adding a color filter film to the band-shaped display element having a white light-emitting language.
  • display elements such as an electroluminescent element and an electrochromic element. Since the display element is a separate band-shaped element, when a suitable narrow-light language display element is not available, a color display can be achieved by adding a color filter film to the band-shaped display element having a white light-emitting language.
  • a transparent conductive tape can be used, and the back conductive layer can be made transparent, so that the above-mentioned device can be used for back or double-sided display applications.
  • the conductive layers and conductive materials of the bar-shaped display element can be sequentially formed on a transparent organic substrate.
  • the composition structure of the bar-shaped display element is: transparent substrate, transparent Conductive layer, electroluminescent or electrochromic material layer, back conductive layer.
  • the conductive layer is a thin film, when the thickness of the film is much smaller than the distance between pixels, if the resistance of the conductive layer satisfies the following conditions, that is, electroluminescence or electroluminescence from the conductive belt to the pixel that needs to be light-emitting
  • the resistance of the color-changing layer is small, and the resistance from the conductive band to the electroluminescence or electrochromic layer that does not need a light-emitting pixel is very large, then a continuous conductive layer on the back can be used. At this time, the resistance characteristic of the conductive layer can ensure that the light emitting area is in a desired area.

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Description

平面显示器 技术领域
本发明涉及一种平面显示器， 尤其涉及需要大屏幕显示的场合。 例 如可应用于大屏幕壁挂式电视、 计算机大屏幕平面监视器、 室内外的大 面积动态信息显示牌（如用于证券交易所的信息显示） 等。 本发明也可 适用于轻便的小型显示屏（如家用电器、 仪表的信息显示） 。 背景技术
平面显示器可分为液晶显示器， 等离子显示器， 电致发光显示器和 电致变色显示器。 例如电致发光显示器和电致变色显示器是在玻璃基板 上一层层蒸镀或涂布成膜， 再用刻蚀的方法加工出电极和发光单元。 显 示器的尺寸受到基板大小和工艺的限制。 显示元件采用电致发光 (EL)元 件或电致变色元件（ ECD )。其工作原理为在电致发光材料或电致变色 材料薄膜的两面分别采用干法（如蒸镀）或湿法（如电镀或涂布）制作 两个导电层， 其中一个导电层为透明导电层。 通过这两个导电层向显示 材料薄膜施加电压或电流， 则在透明导电层一侧有可见光发出 （电致发 光）或有反射光的颜色亮度发生改变（电致变色）， 由此实现信息显示。
由于厚度薄、 体积小、 重量轻， 平面显示器已成为国内外厂商开发 的重点。 目前各种平面显示产品的结构都以基板为基础， 在基板上用涂 布、 蒸发工艺和刻蚀或印刷工艺形成发光单元阵列 （象素） ， 各单元由 纵横排列的平行导线驱动。 由于受蒸发和涂布工艺的限制， 显示器的尺 寸难以做大。 发明目的
本发明的一个目的是提供一种可简化加工工序以便有效降低成本 的显示器。
本发明的另一个目的是提供一种大屏幕显示器， 无需受现有显示器 制造方法的局限， 可把显示器的显示屏幕^:到 大。 技术方案
本发明提供了一种平面显示器， 包括： 彼此平行且以相同间隔排列 的多条第一信号线； 彼此平行且以相同间隔排列的多条第二信号线， 所 述第二信号线与第一信号线成直角交叉； 显示单元； 其中， 所述第一信 号线与所述第二信号线中的一个为帶状显示元件， 另一个为至少一面导 电的导电带， 所述带状显示元件依次包括背面导电层、 背面导电层上的 由电致发光或电致变色材料构成的发光或显色层； 以及覆盖整个发光或 显色材料层的透明导电层， 所述显示单元由带状显示元件的背面导电层 与导电线在交叉处彼此欧姆接触形成。
本发明的显示器是将带状显示元件加上必要的辅助导电线和绝缘 线， 用编织的方法使经向和纬向的元件之间互相交织在一起， 当编织困 难时也可以采用平铺的结构， 由编织或平铺排列的条状显示元件组成显 示平面。 有益效果
由于使用了带状显示元件及导电线， 因而可使用常规的条状、 卷状 加工工艺或双卷盘工艺进行加工。 这样， 降低了对成膜工艺的要求， 提 高了膜层的均匀性。 同时， 由于可使用编织工艺来实现本发明， 因而只 要驱动能力可以达到就对显示器的大小没有限制， 因此可比较容易地制 出大屏幕的显示器而不会受现有技术的限制。
下面参照附图结合本发明的实施例详细描述本发明。 附图中相同的 标号代表相同或对应的部分。 图面说明
图 1A显示出本发明中所使用的带状显示元件的正面结构， 图 1B 是该显示元件的背面结构， 而图 1C是图 1A中的显示元件 A - A线的 剖视图；
图 2为本发明一个实施例的结构示意图；
图 3A为本发明另一个实施例的结构示意图， 图 3B为图 3A中的导 电带 A - A线的剖视图；
图 4为本发明又一个实施例的结构示意图。 实现本发明的最好方式
首先，参照附图的图 1A - 1C和图 2对本发明的一个实施例作详细 说明。 图 1A - 1C中示出了本发明带状显示元件 1的详细结构。 图 2中 示出了由导电带 2和本发明的显示元件 1构成的一种显示器 10的结构。
图中， 帶状显示元件 1为夹层结构的扁平带， 由正面的透明导电膜 5和背面的背面导电层 4将发光或显色材料层 3夹在中间构成。 整个显 示元件外形为条状的薄带。 其中， 将要与导电带（电极）接触的背面导 电层 4为非连续结构， 其上以基本上相等的间距贯穿有宽度极窄的横向 缝隙 6， 因而成为沿显示元件的长度方向排列的互相绝缘的块状区域结 构， 以使相邻的背面导电层 4的各块状区域之间彼此绝缘。 另外， 缝隙 6中也可以填充有绝缘材料以加强绝缘性。 标号 2为导电材料构成的导 电带， 导电带为条状的导体薄带。
图 2中的显示器为平铺排列结构。 当显示材料较硬， 制成的带状显 示元件不易编织时， 采用这种结构较易实现。 彼此平行并且以基本相同 的间距配置的显示元件 1以其背面导电层与同样是彼此平行并且以基本 相同的间距配置的导电带相接触的方式直角交叉， 由此构成显示阵列， 每一交叉点都是一显示单元（或称象素） 。 驱动电路分别接条状显示元 件和导电带。 当透明导电膜接地， 背面导电层接驱动电压时， 背面导电 层的横向缝隙 6保证了显示只发生在背面导电层通电的区域内。 显示元 件的透明导电层和导电带为显示阵列 （象素） 的纵横选址电极， 电流由 透明导电层 5经电致发光薄膜或电致变色薄膜 3 , 背面导电层 4流至导 电带。
导电带同帶状显示元件背面导电层之间可以采用粘接或焊接保持 两者之间的接触（导通） 。
显示元件 1可以采用电致发光 (EL)元件或电致变色（ ECD )元件。 在电致发光材料或电致变色材料薄膜的两面分别采用干法（如蒸镀） 或 湿法（如电镀或涂布）制作两个导电层 4和 5 , 其中导电层 5为透明导 电层。 通过这两个导电层向显示材料薄膜施加电压或电流， 则在透明导 电层 5—侧有可见光发出 （电致发光） 或者反射光的颜色亮度发生改变 (电致变色） ， 由此实现信息显示。
图 3A为本发明另一个实施例的结构示意图， 该结构使用了一种编 织结构,这种编织方式使得显示元件交错排列。 带状编织工艺蒸发或涂布 只需在窄的帶状材料上进行， 而且可以连续加工。 由于编织工艺的固有 特性可以使编织连续进行。 因而， 通过生产长幅的显示元件可达到生产 大屏幕显示器的目的。
为实现这一编织结构， 本实施例使用了图 3B中所示的导电带的结 构。 导电带 2由二层结构构成， 一面导电另一面绝缘， 图中的 7为导电 面， 8为绝缘面。 编织时要使导电带 2的导电面 7与显示元件 1的背面 导电层接触（导通）构成显示单元， 或者使导电带 2的绝缘面 8与显示 元件 1的透明导电膜接触。 为了保证帶状显示元件之间的绝缘以及导电 帶之间的绝缘要控制元件的宽度和厚度及编织时的密度。
图 4为编织结构的另一种实现方式。 该实施例中， 显示器由显示元 件、 导电带和绝缘线组成。 其中 9为绝缘线， 绝缘线为条状的绝缘体薄 带。 经向为间隔排列的条状显示元件和绝缘线， 纬向为间隔排列的导电 带和绝缘线。 导电带同条状显示元件背面导电层之间形成欧姆接触， 间 隔排列的绝缘线保证导电带之间的绝缘和条状显示元件之间的绝缘。
在图 2所示的平铺结构显示器的基础上， 用绝缘线 9将显示元件和 导电帶通过编织组合在一起， 如图所示。 调整导电帶、 条状显示元件和 绝缘线三者之间的宽度比例可以调整条状显示元件的利用效率。 当显示 元件受到周围的电磁场影响时， 利用中间包有导线的绝缘线编织在显示 元件的周围形成屏蔽， 控制电磁场的影响。
本发明的显示器可采用多种显示元件， 如电致发光元件和电致变色 元件。 由于显示元件为分离的帶状元件， 故在没有合适的窄光语显示元 件时可通过在具有白色发光光语的带状显示元件外加滤色膜实现彩色显 示。
另外， 在本发明的实现中可以采用透明的导电帶， 将背面导电层做 成透明的， 则可以实现上述器件的背向或双面显示应用。
所有上述的实施例只是对本发明的说明， 而不是对其进行限制。 本 领域的熟练技术人员可对其进行变更和修改。例如， 当显示材料很薄时， 条形显示元件的各导电层及导电材料可依次做在透明的有机基材上， 在 这种情况下条形显示元件的组成结构为： 透明基材、 透明导电层、 电致 发光或电致变色材料层、 背面导电层。 其中， 对于背面导电层， 由于导 电层为薄膜状， 当膜的厚度大大小于像素间的距离时， 若导电层的电阻 满足以下条件， 即从导电带到需要发光像素的电致发光或电致变色层的 电阻较小， 从导电带到不需发光像素的电致发光或电致变色层的电阻很 大， 则可以采用连续的背面导电层。 此时由导电层的阻值特性可保证发 光区域是在所需区域。

Claims

权利要求
1、 一种平面显示器， 包括：
彼此平行且以相同间隔排列的多条第一信号线；
彼此平行且以相同间隔排列的多条第二信号线， 所述第二信号线 与第一信号线成直角交叉；
显示单元；
其特征在于：
所述第一信号线与所述第二信号线中的一个为帶状显示元件， 另 一个为至少一面导电的导电帶，
所述帶状显示元件依次包括背面导电层、 背面导电层上的由电致 发光或电致变色材料构成的发光或显色层； 以及覆盖整个发光或显色材 料层的透明导电层，
所述显示单元由带状显示元件的背面导电层与导电线在交叉处 彼此欧姆接触形成。
2、 权利要求 1的平面显示器， 其特征在于：
所述导电带还具有涂复了一层绝缘膜的另一面， 所述欧姆接触是 使帶状显示元件的背面导电层与导电带的导电面相互接触。
3、 权利要求 1的平面显示器， 其特征在于：
所述各显示元件带之间以及各所述导电帶之间的至少一方夹有 表面不导电的绝缘线。
4、 权利要求 1或 2的平面显示器， 其特征在于：
所述带状显示元件的背面导电层由沿长度方向的多个块状区域 构成， 相邻块状区域之间具有使其相互绝缘的缝隙。
5、 权利要求 2的平面显示器， 其特征在于：
所述带状显示元件的背面导电层与所述导电带的导电面的相互 接触是通过一种编织结构来实现的。
6、 权利要求 3的平面显示器， 其特征在于：
所述带状显示元件、 所述导电带以及所述绝缘线是采用 结构来形成显示平面的。
7、 权利要求 3的平面显示器， 其特征在于：
所述绝缘线由绝缘材料包围中心的导线构成。
8、 权利要求 4的平面显示器， 其特征在于：
所述缝隙中填充有绝缘材料。
PCT/CN1998/000213 1997-10-08 1998-10-08 Afficheur plat WO1999019858A1 (fr)

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CN 97108671 CN1130682C (zh) 1997-10-08 1997-10-08 一种平面显示器
CN97108671.0 1997-10-08

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US6608438B2 (en) 2001-11-09 2003-08-19 Visson Ip Llc 3-D flexible display structure
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US6608438B2 (en) 2001-11-09 2003-08-19 Visson Ip Llc 3-D flexible display structure
US7144830B2 (en) 2002-05-10 2006-12-05 Sarnoff Corporation Plural layer woven electronic textile, article and method
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AU2702199A (en) 1999-05-03
CN1130682C (zh) 2003-12-10

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