Abstract:
An electroluminescent (EL) display apparatus is constructed in such a way that a plurality of EL elements are disposed on one surface of an optically transparent substrate in a matrix so as to be isolated from each other and be powered individually, and at least one of a pair of electrodes is made of an optically transparent electrode, so that, when the EL elements are powered, light is emitted from the light emitting layers, wherein an optical device is provided on the other surface side of the substrate so that at least a portion of an incident light injected into the substrate and forming an angle to cause total reflection at the exit face is scattered and/or diffracted externally, and another portion of the incident light is weakly scattered and/or transmitted externally.
Abstract:
The invention provides a liquid crystal display device having a wide viewing angle for transmissive display and reflective display. The liquid crystal display device according to the invention can include a homeotropic liquid crystal layer interposed between a pair of substrates. The liquid crystal display device has a transmissive display area and a reflective display area in each dot area. A liquid crystal layer thickness-adjustment layer can be interposed between at least the substrate of the pair of substrates and the liquid crystal layer. The liquid crystal layer thickness-adjustment layer reduces the liquid crystal layer thickness of the reflective display area in comparison with the liquid crystal layer thickness of the transmissive display area. On the substrate opposing the substrate with the liquid crystal layer thickness-adjustment layer, protrusions protruding from the inner surface of the substrate to the liquid crystal layer are formed.
Abstract:
The invention provides a three-level driving method that prevents or reduces contrast degradation due to a leakage current. Three-level driving drives a pixel by using signal voltages whose data magnitude is smaller than 3 V. The pixel includes a liquid crystal element and a two-terminal switching element connected in series with the liquid crystal element. In the optical characteristics of the liquid crystal element, a difference between a first effective voltage of liquid crystal, at which the optical characteristic starts to change after increasing from zero voltage, and a second effective voltage, at which the maximum optical characteristic occurs, is smaller than 3 V.
Abstract translation:本发明提供了防止或减少由于漏电流引起的对比度劣化的三电平驱动方法。 三电平驱动通过使用数据量小于3V的信号电压来驱动像素。像素包括与液晶元件串联连接的液晶元件和两端开关元件。 在液晶元件的光学特性中,出现最大光学特性时,光电特性开始从零电压增加而变化的液晶的第一有效电压与第二有效电压之间的差异为 小于3 V.
Abstract:
The invention provides a liquid crystal display device capable of displaying images with a wide angle in both of transmissive display and reflective display. In the liquid crystal display device, a liquid crystal layer can be interposed between a pair of substrates, and a transmissive display region and a reflective display region can be provided in one dot region. The liquid crystal layer is made of liquid crystal whose dielectric anisotropy showing that liquid crystal molecules are vertically aligned at an initial stage is negative. A liquid crystal layer thickness controlling layer for making the thickness of the liquid crystal layer in the reflective display region different from the thickness of the liquid crystal layer in the transmissive display region can be provided between the substrate and the liquid crystal layer. In the transmissive display region and the reflective display region, protrusions that protrude from the internal surface of the substrate to the inside of the liquid crystal layer are further provided. Therefore, the height of the convex portions formed in the transmissive display region is larger than the height of the convex portions formed in the reflective display region.
Abstract:
The invention provides a transflective color liquid crystal display that provides a light transmissive display and reduces power consumption without reducing the brightness of the reflective display. In the liquid crystal display with a liquid crystal layer disposed between a pair of substrates, a reflective display unit and a transmissive display unit are formed in one pixel, and a retardation layer including a polymer liquid crystal and having a retardation of roughly ¼ wavelength is formed in the transmissive display unit.
Abstract:
The invention provides a liquid crystal display device including switching elements and a reflection layer having low heat resistance. The liquid crystal display device is capable of reducing or preventing a degradation in the characteristics of the reflection layer due to heating in the manufacturing process. A liquid crystal display device includes a pair of opposing substrates, and a liquid crystal interposed between the substrates. A reflection layer is formed on the substrate, and switching elements (TFDs) to drive the liquid crystal are formed on the liquid crystal side of the substrate. The reflection layer is formed of any one of a dielectric reflection film, a cholesteric reflection film, and a holographic reflection film.
Abstract:
A sheet-affixing device for affixing a pressure sensitive adhesive-sheet onto a wheel is provided. The sheet-affixing device comprises an absorption plate member, an alignment shaft member, and a pressing member. The absorption plate member is formed in a ring-shape. The exterior diameter of the absorption plate member is smaller than the diameter of a rim. On the bottom surface of the absorption plate member there are provided a plurality of suction perforations. The alignment shaft member is fitted into the hub so that the center of the absorption plate member and the center of the wheel are aligned. The pressing member is used for pressing a peripheral part of the pressure sensitive adhesive-sheet against the rim so that the peripheral part is affixed to the rim. Further, the pressing member is movable relative to the absorption plate member along the axial direction of the ring-shaped absorption plate member.
Abstract:
An ON/OFF control signal 105 directive of turning ON in a transmissive display mode or turning OFF in a reflective display mode is output by an ON/OFF state controlling means 111 to a light source 115. The ON/OFF control signal 105 is also output to a data signal converting means 104, and the data signal converting means 104 converts a data signal 102 into a data signal 103 in synchronization with the switching of ON and OFF of the light source 115 so as to prevent positive-negative inversion of the display on a liquid crystal panel 114. A data signal potential supplying means 112 supplies a potential of a data signal based on the data signal 103 to a data signal line 113 so as to drive the liquid crystal panel 114.
Abstract:
In a front light type liquid crystal display device, to prevent a reduction in the quality of a visible image to be displayed caused by dust entering the liquid crystal display device. To prevent a reduction in the quality of a visible image to be displayed caused by ununiform close contact between the light-guiding member and another member of the liquid crystal display device. A liquid crystal display device 21 including a liquid crystal structure 6 consisting of a pair of substrates 17a and 17b with liquid crystal L filled therebetween; a light source 2 which emits light; a light-guiding member 3, disposed at the observer side of the liquid crystal structure 6, for guiding the light from the light source 2 to the liquid crystal structure 6; and a cover 23 disposed at the observer side of the light-guiding member 3. A first spacer member 12 is disposed between the light-guiding member 3 and the liquid crystal structure 6 at the peripheral portions thereof so as to be in close contact with the light-guiding member 3 and the liquid crystal structure 6, and a second spacer member is disposed between the light-guiding member 3 and the cover 23 at the peripheral portions thereof so as to be in close contact with the light-guiding member 3 and the cover 23. The spacer members 12 and 22 prevent the entry of dust between the liquid crystal structure 6 and the light-guiding member 3 and between the light-guiding member 3 and the cover 23, and can be used to eliminate the problem of ununiform close contact between these component parts.
Abstract:
A liquid crystal device has a structure in which an electric field is applied across a liquid crystal in a direction substantially parallel to the plane of a substrate. A conductive film is formed on a first substrate on which an electric field control is provided, and also on a color filter substrate located opposite the first substrate, and the conductive films are maintained at either a ground voltage, a common electrode voltage, the center voltage of an image signal, a non-selection voltage of a scanning signal, or a logic voltage of an external driver or otherwise the voltage of the conductive films is maintained in a floating state. The liquid crystal device having the above structure displays a high-quality image without encountering an influence of electrostatic charges.