Abstract:
PURPOSE:To decrease flickering without decreasing a contrast ratio even at a high temp. by disposing the same conductive film as the conductive film in the channel part of a thin film transistor (TFT) on or below scanning lines of the preceding stage via a gate insulating film and connecting the conductive film to picture element electrodes. CONSTITUTION:The thin film 2 of polysilicon or amorphous silicon is deposited and patterned on an insulating substrate 1. The thin film acts as the channel part, source and drain electrodes and electrodes for creating the capacity thereof of the TFT. The gate insulating film 3 is then formed and the scanning line 4 in common use as the gate electrodes are formed thereon. An inter-layer insulating film 5 is deposited thereon and contact holes are opened thereto. Another substrate having a common electrodes is opposed via several mum space to the substrate formed with the picture element electrodes 6 and data lines 7. A liquid crystal is sealed into said space to obtain an active matrix panel. The contrast ratio is thereby increased and the flickering is decreased. The image screen having good reproducibility in a wide temp. range is thus obtd.
Abstract:
PURPOSE:To write faithfully an image signal to a picture element electrode by providing a switching circuit using the first TFT, in a driver integrated circuit, and constituting a TFT array for driving a liquid crystal, of the second TFT whose polarity is different from that of the first TFT. CONSTITUTION:An active matrix panel containing a driver consists of three parts of an X driver part 37, a Y driver part 11 and a picture element area part 12. An image signal is written to data lines 13-15 through TFTs of 5-7 in accordance with a timing of an output pulse of a shift register. A picture element area part is constituted of the data lines 13-15 driven by the X driver, scanning lines 16-18 driven by the Y driver, picture element TFTs 19-27 which are placed in their intersections and drive a picture element electrode, and capacities 28-36 formed by placing a liquid crystal between the picture element electrode and the opposed electrode. Also, if characteristics of the TFT 5 of a P channel and the TFT 19 of an (n) channel are symmetrical, a picture can be reproduced faithfully for the image signal of every level.
Abstract:
PURPOSE:To make it possible to operate a panel normally when at least one FET per picture element is normal, by providing two FETs per picture element electrode, writing data twice in one frame, thereby providing redundancy. CONSTITUTION:Color filters in red (R), green (G) and blue (B) colors are obliquely arranged in a mosaic shape. TFTs are arranged so as to drive every two picture elements having the same color in the oblique arrangement simultaneously. In the case of a black and white panel or a color panel having longitudinal stripes, the TFTs are arranged so as to drive the two longitudinally arranged picture elements simultaneously. The number of wirings on the Y side can be made twice, and the picture element can be selected one by one. However, the area of the opening for the picture element becomes small, and the wirings become complex. When Y1 is selected, not only the TFTs 1, 2 and 3 on the Y1 line, but also the TFTs 4, 5 and 6, which are connected to the picture electrodes on the Y2 line, are also turned ON. The signals are written in two picture elements at the same time.
Abstract:
PURPOSE:To prevent discharge in the substrate surface on ion implanting, to increase the yield and to manufacture the active matrix substrate stably, by ion-implanting in a state in which the substrate surface outside transistors is covered with an Al layer. CONSTITUTION:After a silicon thin film 2 is formed on an insulating substrate 1 by a CVD method, it is photo-etched in a given shape. Next, a silicon oxide film is formed with thermal oxidation, a gate oxide film 3 is formed, a silicon thin film is formed with a CVD method, impurities are diffused with thermal diffusion, and a gate electrode 4 and wiring are formed with photo etching. After on the substrate which has a thin film pattern formed, an Al layer is formed, on which a resist layer is formed. After the Al layer is patterned, the resist layer is peeled off. At this time, the Al layer 5 covers all the substrate surface outside P-channel transistors. Using the Al layer 5 and gate electrode 4 as a mask, ion-implantation is done. After the Al layer is removed with acid, wiring and electrodes of a transparent conductive film are formed in the same way as prior arts.
Abstract:
PROBLEM TO BE SOLVED: To provide an electro-optical apparatus having a power-supply wiring structure capable of supplying sufficient electrical power to a common electrode of electro-optical elements. SOLUTION: The electro-optical apparatus comprises electro-optical elements having a laminated structure including first electrode layers formed on or above an effective area 11 of a substrate 15 and a second electrode layer 14 formed on or above the first electrode layers, the laminated structure further including first power-supply wiring for supplying a voltage to the first electrode layers and second power-supply wiring 16 electrically connected to the second electrode layer, wherein the first power-supply wiring and the second power-supply wiring are arranged on or above the effective area and are arranged in the same layer as the first electrode layers or below the first electrode layers. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a display device capable of narrowing an area of a frame. SOLUTION: The display device comprises a substrate 100 having a plurality of arranged display elements 120 and a wiring layer 107 of a power source on the peripheral side; a bank layer 113 for mutually separating the display elements; an electrode layer 123 for covering the plurality of display elements and the bank layer; and a sealing substrate 200 for further covering the electrode layer by joining the peripheral portion of the substrate and a sealing portion 202 circling around the periphery via a joining means 301 such as an adhesive; wherein the periphery of the sealing substrate is positioned inside the periphery of the substrate, and the peripheral portion of the electrode layer is connected to the wiring 107 of the power source within the sealing portion (b+c) of the sealing substrate. A connection area (c) of the electrode 123 and the wiring 107 is thereby utilized as the joining area (b+c) of the substrate and the sealing substrate, and portions which are components of the frame of the display device are reduced while securing the joining width required for gas barrier or the like. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a display device capable of further narrowing an area of a frame. SOLUTION: The display device is provided with a substrate (100) having arrayed multiple display elements (120) and a wiring layer (107) of power source on the outer periphery side, an electrode layer (123) covering the multiple display elements, and a sealing substrate (200) covering the electrode layer by being joined via a joining means (301) such as adhesive agent at a sealing section (202) around the outer peripheral part and circumference of the substrate. The circumference of the sealing substrate is located inside the circumference of the substrate and the external section of the electrode layer is connected with wiring 107 of the power source within the sealing section (b+c) of the sealing substrate. Thereby, a connection area (c) between electrode (123) and the wiring (107) is utilized as an connection area (b+c) of the substrate and the sealing substrate and the components of the frame of the display device is reduced while keeping the joint width for gas barrier or the like. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit layout of a display apparatus having no irregularity in brightness among pixels and in the entire screen, and to provide a method for manufacturing the circuit. SOLUTION: The display apparatus is equipped with a thin film transistor 12 between a power supply line 203 as a power supply for an electroluminescence layer and a pixel electrode 205 to supply a current to the electroluminescence layer. The thin film transistor 12 has a gate electrode 202 formed in the longitudinal direction. A first contact hole 303 to connect the pixel electrode 205 is formed in the longitudinal direction, and a second contact hole 304 to connect the power supply line 203 is formed in the longitudinal direction. The gate electrode 202 and the contact holes 303, 304 are parallel to each other in the longitudinal direction, and the longitudinal direction and the moving direction of a carrier make a right angle. Thus, an electric current can be uniformly supplied at the minimum distance to the electroluminescence element 10 without using a lead line. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obviate the occurrence of dot slippage, color smear, etc., and to make uniformity, fineness and image quality higher. SOLUTION: The display device has a signal driving circuit for an active matrix, a clock line which is connected to the driving circuit and supplies clock pulses and a power source line which supplies electric power to the driving circuit. The power source line is arranged to enclose the clock line and is thereby constituted to reduce wavelength distortion. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce power consumption of an organic electro-luminescence display device. SOLUTION: Organic electro-luminescence elements, corresponding to each color of R, G, B, hold capacitance, etc., are arranged in an each cross point of data lines X1-X12 and scanning lines Y1-Y7 which are arranged in a grid shape, an organic EL display device is provided with a dataline drive circuit 40 and a scanning line drive circuit 30. The scanning line drive circuit 30 comprises a decoder 33. The device is provided with a sub-data line drive circuit 50 separately from the dataline drive circuit 40. The sub-data drive circuit 50 comprises a decoder 51 and a plurality of switching elements 52. One-end sides of the switching elements 52 are selectively connected only with the datalines X2, X5, X8, corresponding to the organic electro-luminescence elements capable of coloring green (G) among the datalines X1-X12. The other end sides of the switching elements 52 are connected with power source wiring 53 for supplying a character display voltage VCHR for coloring the organic electro-luminescence elements 52.