Abstract: This invention provides an organic EL device of optical resonator type where diffusion of an Ag material caused by heat generated in a manufacturing process and while light is being emitted is minimized so as to stabilize characteristics of a driving TFT. In the organic EL device of optical resonator type of the invention, an anti-diffusion layer (made of ITO or IZO) connected with the driving TFT (not shown) is formed on a glass substrate, and a semi-transmissive film (made of an Ag alloy layer) having a predetermined film thickness enabling semi-transmission of light, a transparent anode (an electrode made of ITO or IZO), an organic EL layer (e.g. made of a hole transport layer, an emissive layer, and an electron transport layer), and a cathode (made of an Ag alloy layer) serving as a reflection film having a predetermined film thickness enabling reflection of light are formed on the anti-diffusion layer in this order.

Abstract: A green pixel is provided with an organic EL element having an emissive layer which emits green light, but is not provided with a color filter. On the other hand, red and blue pixels comprise organic EL elements having an emissive layer which emits white light. The white emissive layer is composed of a lamination of an orange organic emissive layer and a blue organic emissive layer. The red and blue pixels are further provided with red and blue color filters, respectively, to limit the emitted white light to those colors.

Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. A color filter is provided underneath the semi-transmissive film to further restrict the wavelength of light which has passed through the semi-transmissive film.

Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element for a specific color. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. In an organic EL element for another color, the semi-transmissive film is omitted. According to this arrangement, emissive efficiency of an organic EL element for a color naturally having low emissive efficiency can be selectively enhanced.

Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. Further, a light-shielding film is provided in a position corresponding to the peripheral portion of the semi-transmissive film, so as to prevent light having a different color from being ejected due to non-uniformity in the optical length.

Abstract: The invention prevents moisture infiltration into a pixel region and improves reliability of an organic EL display device. A plurality of pixels is disposed in a matrix on a device substrate to form a pixel region. Each of the pixels in the pixel region is provided with an organic EL element and a driving transistor for driving the organic EL element. Furthermore, organic interlayer insulating films are formed on the driving transistor and under the organic EL element. The device substrate and a sealing substrate are attached with a sealing member disposed on a peripheral region of the pixel region. The organic interlayer insulating films are separated by a separating region provided between the sealing member and the pixel region.

Abstract: An upper area over an element substrate is sealed by a sealing substrate to which a desiccant is fixed on an internal surface of the sealing substrate. A substance prepared by dispersing moisture absorbent grains into an adhesive made of resin is used as the desiccant. Further, the size of the moisture absorbent grains is defined to be equal to or smaller than 10 &mgr;m. In this manner, the desiccant can be prevented from cracking due to temperature variations.

Abstract: The invention is directed to improving of reliability in resistance to temperature changes by preventing a desiccant layer from peeling off or tearing in an organic EL panel. A pocket portion is formed by etching a sealing glass substrate with hydrofluoric acid by using a plurality of resist patterns disposed in a matrix as a mask. Then, concaves and convexes are formed on a bottom of the pocket portion, i.e. on a surface of the sealing glass substrate. A desiccant layer is formed on the bottom of the pocket portion. By rough-surfacing as above, the anchor effect is generated to increase adhesive force of the desiccant layer to the sealing glass substrate, preventing the desiccant layer from peeling off the sealing substrate.

Abstract: The invention prevents a desiccant layer in an organic EL display panel from peeling off and enhances reliability in resistance to a temperature cycle. A device glass substrate is attached to a sealing glass substrate for sealing devices with sealing resin made of epoxy resin etc. The sealing glass substrate is formed with a pocket portion by etching. An Al layer having a thickness of about 4000 Å is formed on a bottom of the pocket portion by an evaporation method, serving as a stress buffering layer. A desiccant layer for absorbing moisture is coated on the Al layer.

Abstract: A display device manufacturing method includes providing a device substrate having a display element, providing a sealing substrate, and forming a layer of a sealing resin on the sealing substrate. The viscosity of the sealing resin is between 40000 cp and 170000 cp when the layer of the sealing resin is formed. The method also includes placing the sealing substrate on the device substrate so that the layer of the sealing resin is disposed between the sealing substrate and the device substrate, and heating the layer of the sealing resin to harden the sealing resin so that the sealing substrate and the device substrate are attached together by the sealing resin.

Abstract: In a sealing structure of an electroluminescent display device, there are inhibited a temperature rise of a display panel on a light-emission of an EL element and thus deterioration of the EL element. The structure of the invention has a first glass substrate provided with an electroluminescent device on a surface thereof, a second glass substrate attached to the first glass substrate with sealing resin, and a desiccant layer formed on a pocket portion of the second glass substrate, and a high heat conductive layer made of a metal sheet etc covering a surface of the desiccant layer.

Abstract: In a sealing structure of an electroluminescent display device, in which a first glass substrate formed with an EL element and a second glass substrate as a cap are attached to each other, breaking of the element device is prevented when external force is applied to the first glass substrate and the second glass substrate. The sealing structure has the first glass substrate provided with the EL element on a surface thereof, the second glass substrate attached to the first glass substrate with a sealing resin, a desiccant layer formed on a surface of the second glass substrate and a stress buffer layer covering a surface of the desiccant layer.

Abstract: In a display device which is formed by attaching together a device substrate and a sealing substrate, a desiccant is coated to form a shape having a plurality of bending portions on the sealing substrate. Furthermore, the path coated with the desiccant on the sealing substrate is longer than conventional devices, thereby increasing a gross surface area and thus improving moisture absorption effect.

Abstract: A coating start point is altered to avoid flowing of a sealing resin to an EL element when the sealing resin is pressed and flattened on adhesion of a device substrate and a sealing substrate with the sealing resin interposed therebetween. In a manufacturing method of a display device of the invention which is formed by adhering the device substrate and the sealing substrate with the sealing resin interposed therebetween, when the sealing resin is coated along edges of the device substrate and the sealing substrate, the coating is started on a corner of the substrates as a coating start point and a coating end point is on the same corner as for the coating start point.

Abstract: A display device manufacturing method includes providing a device substrate having a display element, providing a sealing substrate, and forming a layer of a sealing resin on the sealing substrate. The viscosity of the sealing resin is between 40000 cp and 170000 cp when the layer of the sealing resin is formed. The method also includes placing the sealing substrate on the device substrate so that the layer of the sealing resin is disposed between the sealing substrate and the device substrate, and heating the layer of the sealing resin to harden the sealing resin so that the sealing substrate and the device substrate are attached together by the sealing resin.

Abstract: A vertically aligned type liquid crystal display includes a liquid crystal layer disposed between a plurality of pixel electrodes and a common electrode and containing vertically aligned liquid crystal molecules, the orientation of the liquid crystal molecules being controlled by electric field. An orientation control window is formed in the common electrode. A distance Wp between adjacent pixel electrodes and/or a width Ws of the orientation control window is selected so as to satisfy Wp≧d/2 and/or Ws≧d/2, where d is a distance (or a cell gap) between the pixel electrodes and the common electrode. Viewing angle is widened and a viewing angle characteristic is improved, and abnormal orientation or grittiness of an image is eliminated.

Abstract: A pixel electrode for driving liquid crystal is formed on a planarization insulator film covering a thin film transistor, and a vertical alignment film without rubbing treatment is formed on the pixel electrode. An alignment control window that has electrode-free portion is formed in a common electrode, and a vertical alignment film is formed on the common electrode without rubbing treatment. The liquid crystal having negative dielectric constant anisotropy is controlled in an initial direction of the substantially normal direction without pretilt. Upon applying a voltage, the tilt of the alignment is controlled in the direction of a slanting electric field at the edge of the pixel electrode and the edge of the alignment control window, so that pixel division is performed. Since rubbing treatment is not performed, electrostatic breakdown of the thin film transistor is prevented and, because a black matrix is eliminated, aperture ratio is improved.

Abstract: A vertically aligned type liquid crystal display includes a liquid crystal layer disposed between a plurality of pixel electrodes and a common electrode and containing vertically aligned liquid crystal molecules, the orientation of the liquid crystal molecules being controlled by electric field. An orientation control window is formed in the common electrode. A distance Wp between adjacent pixel electrodes and/or a width Ws of the orientation control window is selected so as to satisfy Wp≧d/2 and/or Ws≧d/2, where d is a distance (or a cell gap) between the pixel electrodes and the common electrode. Viewing angle is widened and a viewing angle characteristic is improved, and abnormal orientation or grittiness of an image is eliminated.

Abstract: On a TFT substrate, a TFT using a low-temperature poly silicon thin film as an active layer is formed and a plurality of pixel electrodes are formed over the TFT and its electrode wiring, with an interlayer insulating layer between. In a common electrode formed on an opposite substrate opposite the TFT substrate with a liquid crystal layer between, an alignment controlling window for the liquid crystal is formed at a predetermined position opposite each of the pixel electrodes. A wide viewing angle is achieved by dividing an alignment area of liquid crystal molecules in one pixel area. The liquid crystal layer is vertically aligned and can be operated at a low driving voltage obtained by a poly silicon TFT by including fluorine liquid crystal molecules having negative dielectric anisotropy and fluorine side chains in the liquid crystal.

Abstract: A pixel electrode for driving liquid crystal is formed on a planarization insulator film covering a thin film transistor, and a vertical alignment film without rubbing treatment is formed on the pixel electrode. An alignment control window that has electrode-free portion is formed in a common electrode, and a vertical alignment film is formed on the common electrode without rubbing treatment. The liquid crystal having negative dielectric constant anisotropy is controlled in an initial direction of the substantially normal direction without pretilt. Upon applying a voltage, the tilt of the alignment is controlled in the direction of a slanting electric field at the edge of the pixel electrode and the edge of the alignment control window, so that pixel division is performed. Since rubbing treatment is not performed, electrostatic breakdown of the thin film transistor is prevented and, because a black matrix is eliminated, aperture ratio is improved.