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1
US2005264226A1
Publication/Patent Number: US2005264226A1
Publication date: 2005-12-01
Application number: 11/139,628
Filing date: 2005-05-31
Abstract: Provided is a method for driving an electron emission device that reduces the required withstand voltage of an integrated circuit constituting a scan driver, which reduces both the manufacturing costs of an electron emission device and the likelihood of noise in the scan driver, as well as preventing back emission. Scan signals are applied to scan electrode lines during a scan period and an offset period, which is a non-scan period. Display data signals are applied to data electrode lines during a first data period, when a difference between a voltage of the display data signal and a voltage of the scan signal is greater than or equal to an emission start voltage; and during a second data period, when the voltage difference is less than the emission start voltage. Provided is a method for driving an electron emission device that reduces the required withstand voltage of an integrated circuit constituting a scan driver, which reduces both the manufacturing costs of an electron emission device and the likelihood of noise in the scan driver ...more ...less
2
US2005264229A1
Publication/Patent Number: US2005264229A1
Publication date: 2005-12-01
Application number: 11/136,934
Filing date: 2005-05-25
Abstract: An electron emission device includes a first electrode having a data signal applied thereto, a second electrode having a scan signal applied thereto, an electron emitter for emitting electrons in response to a voltage difference between the data signal and the scan signal, and a third electrode having a focusing signal for focusing the electrons emitted from the electron emitter. In the electron emission device, an off-voltage of the scan signal is set lower than an on-voltage of the data signal. An electron emission device includes a first electrode having a data signal applied thereto, a second electrode having a scan signal applied thereto, an electron emitter for emitting electrons in response to a voltage difference between the data signal and the scan signal, and a ...more ...less
3
US2005280373A1
Publication/Patent Number: US2005280373A1
Publication date: 2005-12-22
Application number: 11/111,286
Filing date: 2005-04-21
Inventor: Chang, Yi-cheng  
Abstract: Organic light emitting diode (OLED) displays and fabrication methods thereof are provided. The OLED display comprises a substrate having a display area and a peripheral area. An array of pixels is disposed in the display area. Column and row control circuits are disposed in the peripheral area. At least one thermal dissipation element is disposed in the peripheral area connecting each pixel. Organic light emitting diode (OLED) displays and fabrication methods thereof are provided. The OLED display comprises a substrate having a display area and a peripheral area. An array of pixels is disposed in the display area. Column and row control circuits are disposed in the ...more ...less
4
US2005253530A1
Publication/Patent Number: US2005253530A1
Publication date: 2005-11-17
Application number: 10/843,961
Filing date: 2004-05-11
Abstract: An electroluminescent (EL) device achieves a significant increase in the lifetime of EL light sources by using a driver having a standard DC-to-AC inverter generating a high-frequency quasi-sinusoidal signal, and a generator of low-frequency rectangular pulses. The inverter and the generator are connected so that the quasi-sinusoidal signal is fed to the EL light source in packets. The duration of a packet is equal to the duration of the rectangular pulse. The duration of the rectangular pulses and of the packets remains constant during the entire operating cycle of the EL light source. The duration of intervals between rectangular pulses and between packets is variable, causing changes in the duty cycle, and is determined by the signal passing through a feedback circuit having an EL light source, a photosensitive element, an amplifier, and an input of the rectangular signal generator. An electroluminescent (EL) device achieves a significant increase in the lifetime of EL light sources by using a driver having a standard DC-to-AC inverter generating a high-frequency quasi-sinusoidal signal, and a generator of low-frequency rectangular pulses. The inverter and ...more ...less
5
US2005218821A1
Publication/Patent Number: US2005218821A1
Publication date: 2005-10-06
Application number: 11/145,161
Filing date: 2005-06-03
Inventor: Asano, Mitsuru  
Abstract: An active matrix type organic EL display apparatus according to the present invention which apparatus uses current writing type pixel circuits is provided with a current control circuit for each of data lines connected to the pixel circuits. The current control circuit supplies part of a data line current to a pixel circuit as a bypass current. The current control circuit handles the bypass current of the data line current represented by (data line current=data current+bypass current). Thereby, the data line driving current can be set greater than the data current flowing through TFTs provided in the pixel circuit, thus reducing luminance data writing time. Also, when the writing time is set unchanged, transistor size of the TFTs provided in the pixel circuit can be reduced. An active matrix type organic EL display apparatus according to the present invention which apparatus uses current writing type pixel circuits is provided with a current control circuit for each of data lines connected to the pixel circuits. The current control circuit supplies ...more ...less
6
US2005122053A1
Publication/Patent Number: US2005122053A1
Publication date: 2005-06-09
Application number: 10/784,058
Filing date: 2004-02-20
Inventor: Ko, Chung-wen  
Assignee: Ko, Chung-Wen
Abstract: An organic electroluminescent display. The display has a transparent display panel, a reflective sheet and a brightness regulating film between the substrate and the reflective sheet. The regulating film is able to adjust the light intensity transmitting thereof.
7
US2005140303A1
Publication/Patent Number: US2005140303A1
Publication date: 2005-06-30
Application number: 10/878,532
Filing date: 2004-06-29
Abstract: An organic electroluminescent device includes first and second substrates facing and spaced apart from each other, the first and second substrates including a pixel region; a gate line on an inner surface of the first substrate; a data line crossing the gate line; a switching thin film transistor connected with the gate line and the data line; a driving thin film transistor connected with the switching thin film transistor; a power line connected with the driving thin film transistor; a first electrode on an inner surface of the second substrate; a first sidewall and a second sidewall on the first electrode at a boundary of the pixel region, the first sidewall and the second sidewall spaced apart from each other; an electroluminescent layer on the first electrode in the pixel region; a second electrode on the electroluminescent layer in the pixel region; and a connection electrode electrically connected to the first and -second substrates. An organic electroluminescent device includes first and second substrates facing and spaced apart from each other, the first and second substrates including a pixel region; a gate line on an inner surface of the first substrate; a data line crossing the gate line; a switching ...more ...less
8
US2005140305A1
Publication/Patent Number: US2005140305A1
Publication date: 2005-06-30
Application number: 11/017,100
Filing date: 2004-12-21
Inventor: Kim, Ock-hee  
Abstract: An organic electro-luminescence display (OELD) includes first and second substrates facing each other and having a display region and a non-display region, a first stacking layer in the display region, the first stacking layer including an array layer disposed on the first substrate and having a thin film transistor, a connection pattern connected with the array layer, and an emitting diode disposed on the second substrate and connected with the connection pattern, and a second stacking layer between the first and second substrates and in the non-display region, the second stacking layer corresponding to the first stacking layer. An organic electro-luminescence display (OELD) includes first and second substrates facing each other and having a display region and a non-display region, a first stacking layer in the display region, the first stacking layer including an array layer disposed on the first ...more ...less
9
US2005140306A1
Publication/Patent Number: US2005140306A1
Publication date: 2005-06-30
Application number: 11/019,574
Filing date: 2004-12-23
Inventor: Park, Jae  
Abstract: An organic electroluminescence device includes: first and second substrates spaced apart from each other by a predetermined distance; a plurality of array elements having TFTs formed on the first substrate; organic electroluminescent diodes each having a first electrode acting as a common electrode, an organic electroluminescent layer formed under the first electrode, and a second electrode patterned for a sub-pixel, which are sequentially formed on the second substrate; and conductive spacers for electrically connecting the array elements and corresponding organic electroluminescent diodes, wherein the array elements are arranged on the first substrate in a matrix configuration, and power lines for supplying voltages to the array elements are formed in a mesh configuration. An organic electroluminescence device includes: first and second substrates spaced apart from each other by a predetermined distance; a plurality of array elements having TFTs formed on the first substrate; organic electroluminescent diodes each having a first electrode acting ...more ...less
10
US2005093467A1
Publication/Patent Number: US2005093467A1
Publication date: 2005-05-05
Application number: 10/976,275
Filing date: 2004-10-29
Inventor: Suh, Mi-sook  
Assignee: Suh, Mi-Sook
Abstract: An organic electroluminescent display device may have a dummy pattern that can induce a charge difference between interconnection lines and thus prevent a short circuit between the interconnection lines resulting from the charge difference. The organic electroluminescent display device may include a substrate and a plurality of metal lines arranged in a vertical direction and in a transverse direction on the substrate, as well as a dummy pattern formed between adjacent metal lines. An organic electroluminescent display device may have a dummy pattern that can induce a charge difference between interconnection lines and thus prevent a short circuit between the interconnection lines resulting from the charge difference. The organic electroluminescent display ...more ...less
11
US2005179397A1
Publication/Patent Number: US2005179397A1
Publication date: 2005-08-18
Application number: 11/105,935
Filing date: 2005-04-13
Abstract: Structures for field emission displays and methods of making and using such structures are provided. In one implementation, a cathode plate of a field emission display includes a cathode substrate of the field emission display and a plurality of emitter lines formed on the cathode substrate. In another implementation, an anode plate of a field emission display includes a transparent piece of the field emission display and a plurality of phosphor lines formed on the transparent piece. The plurality of phosphor lines are to be aligned with and receive electrons from a plurality of emitter lines of a cathode substrate of the field emission display. Structures for field emission displays and methods of making and using such structures are provided. In one implementation, a cathode plate of a field emission display includes a cathode substrate of the field emission display and a plurality of emitter lines formed on the ...more ...less
12
US2005200301A1
Publication/Patent Number: US2005200301A1
Publication date: 2005-09-15
Application number: 11/109,811
Filing date: 2005-04-20
Abstract: There is provided a light emitting device in which low power consumption can be realized even in the case of a large screen. The surface of a source signal line or a power supply line in a pixel portion is plated to reduce a resistance of a wiring. The source signal line in the pixel portion is manufactured by a step different from a source signal line in a driver circuit portion. The power supply line in the pixel portion is manufactured by a step different from a power supply line led on a substrate. A terminal is similarly plated to made the resistance reduction. It is desirable that a wiring before plating is made of the same material as a gate electrode and the surface of the wiring is plated to form the source signal line or the power supply line. There is provided a light emitting device in which low power consumption can be realized even in the case of a large screen. The surface of a source signal line or a power supply line in a pixel portion is plated to reduce a resistance of a wiring. The source signal line in the ...more ...less
13
US2005184674A1
Publication/Patent Number: US2005184674A1
Publication date: 2005-08-25
Application number: 11/038,016
Filing date: 2005-01-18
Abstract: A system comprising a flexible linear EL cable, power source and power management module is disclosed. A power management module according to the present invention permits the flexible linear light cable to be powered or charged through a single connection. Employing a power management module in accordance with the present invention external DC power, via an external battery or 12V AC adapter, can be utilized without causing damage to an internal battery. The system is adapted to be portable for long lengths of reinforced EL wire for use virtually anywhere such as but not limited in shipboard firefighting. A system comprising a flexible linear EL cable, power source and power management module is disclosed. A power management module according to the present invention permits the flexible linear light cable to be powered or charged through a single connection. Employing a power ...more ...less
14
US2005073487A1
Publication/Patent Number: US2005073487A1
Publication date: 2005-04-07
Application number: 10/950,729
Filing date: 2004-09-27
Inventor: Matsumoto, Shoichiro  
Abstract: Pixels for three colors, namely, R, G, and B, are arranged in a stripe manner. Two data lines DL are placed in a space between pixel columns for every other pixel column, and a power supply line is placed in a space between the pixel columns, where a data line is not placed. Pixel columns for colors with the best current efficiency and with the least current efficiency share a single power supply line, while pixel columns for colors with intermediate current efficiency share another power supply line. Pixels for three colors, namely, R, G, and B, are arranged in a stripe manner. Two data lines DL are placed in a space between pixel columns for every other pixel column, and a power supply line is placed in a space between the pixel columns, where a data line is not placed ...more ...less
15
US2005073241A1
Publication/Patent Number: US2005073241A1
Publication date: 2005-04-07
Application number: 10/980,600
Filing date: 2004-11-04
Abstract: An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and non-luminescence of an EL element (109) disposed in a pixel (104) are controlled by time, and the influence by the characteristic variability of a current controlling TFT (108) is prevented. When this method is used, a data signal side driving circuit (102) and a gate signal side driving circuit (103) are formed with TFTs that use a silicon film having a peculiar crystal structure and exhibit an extremely high operation speed. An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and ...more ...less