Patent application number | Description | Published |
20090079890 | Liquid crystal display device - (Object) To take measures against defects in the conduction by preventing shavings of the orientation film from getting into the terminal portion for liquid crystal display devices using an organic passivation film on a TFT substrate. | 03-26-2009 |
20090244466 | Liquid Crystal Display Device - A liquid crystal display device which can decrease periodical stripe-shaped irregularities is provided. In an active-matrix-type liquid crystal display device, a width of a stripe-shaped irregularity generating region where distance between a pixel electrode and a counter electrode changes is set to 50 μm less. To be more specific, at the time of exposing a resist pattern on a TFT substrate, by scanning an exposure light plural times using a direct drawing exposure machine, a width of an overlapping region of exposure regions which is generated in scanning is set to 50 μm or less thus setting the width of the stripe-shaped irregularity generating region to 50 μm or less. | 10-01-2009 |
20100208186 | DISPLAY DEVICE AND MANUFACTURING MEHTOD THEREOF - In a manufacturing method of a display device where a photosensitive material film formed on a light-transmitting film is divided into a plurality of small regions and the respective small regions of the photosensitive material film are sequentially exposed, it is possible to decrease the deviation of a focal point of light to be radiated to each small region. In exposing the photosensitive material film formed on the light-transmitting film, the whole exposure subject region of the photosensitive material film is divided into a plurality of small regions, and a focal point of light to be radiated to each small region is decided. The focal point of the light is decided such that the whole exposure subject region of the photosensitive material film is divided into a plurality of length measurement unit regions, and the focal point is determined based on a distance from an optical system of an exposure device to the photosensitive material film which is measured for every length measurement unit region, and an opaque conductive layer is formed in each length measurement unit region prior to the formation of the light-transmitting film. | 08-19-2010 |
20100227425 | Manufacturing method of liquid crystal display device - The present invention provides a liquid crystal display device having a large holding capacitance in the inside of a pixel. A liquid crystal display device includes a first substrate, a second substrate arranged to face the first substrate in an opposed manner, and liquid crystal sandwiched between the first substrate and the second substrate. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode thereof connected to the video signal line and a second electrode thereof connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film formed above the first silicon nitride film, a capacitance electrode formed above the organic insulation film, and a second silicon nitride film formed above the capacitance electrode and below the pixel electrode. The second silicon nitride film is a film which is formed at a temperature lower than a forming temperature of the first silicon nitride film. The first silicon nitride film and the second silicon nitride film form a contact hole therein by etching both of the first silicon nitride film and the second silicon nitride film collectively by dry etching. The second electrode and the pixel electrode are connected to each other via the contact hole. A potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 09-09-2010 |
20110176081 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD FOR SAME - The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires. | 07-21-2011 |
20110227083 | Manufacturing method of liquid crystal display device - The present invention provides a liquid crystal display device having a large holding capacitance in the inside of a pixel. A liquid crystal display device includes a first substrate, a second substrate arranged to face the first substrate in an opposed manner, and liquid crystal sandwiched between the first substrate and the second substrate. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode thereof connected to the video signal line and a second electrode thereof connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film formed above the first silicon nitride film, a capacitance electrode formed above the organic insulation film, and a second silicon nitride film formed above the capacitance electrode and below the pixel electrode. The second silicon nitride film is a film which is formed at a temperature lower than a forming temperature of the first silicon nitride film. The first silicon nitride film and the second silicon nitride film form a contact hole therein by etching both of the first silicon nitride film and the second silicon nitride film collectively by dry etching. The second electrode and the pixel electrode are connected to each other via the contact hole. A potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 09-22-2011 |
20120088325 | MANUFACTURING METHOD OF DISPLAY DEVICE - Disclosed is a manufacturing method of a liquid crystal display device where first color filters, second color filters and third color filters which are formed adjacent to each other are provided, the first color filter and the second color filter are patterned in such a manner that one edge portion of the second color filter overlaps an edge portion of the first color filter, and the second color filter and the third color filter are patterned in such a manner that an edge portion of the third color filter overlaps the other edge portion of the second color filter wherein in an exposure step for patterning the second color filter, an exposure quantity in a region corresponding to one edge portion and an exposure quantity in a region corresponding to the other edge portion differ from each other. | 04-12-2012 |
20120105778 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a first substrate and a second substrate with a liquid crystal layer therebetween. The first substrate includes drain lines, gate lines, thin-film transistors that output signals to pixel electrodes, and an organic film that is formed between each thin-film transistor and each pixel electrode. The organic film has a contact hole for electrical connection between a source electrode of each thin-film transistor and each pixel electrode. A step is formed in a layer underlying the organic film and an edge portion of the organic film toward the thin-film transistor, the edge portion forming the contact hole, being formed to lie on a lower plane of the step. A sidewall part of the contact hole which is formed in the organic film is formed to have a taper angle of at least 60 degrees. | 05-03-2012 |
20120299028 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 11-29-2012 |
20130308072 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 11-21-2013 |
20140132902 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 05-15-2014 |
20140184990 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD FOR SAME - The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires. | 07-03-2014 |
20150055046 | Liquid Crystal Display Device - A liquid crystal display device includes a plurality of pixels, each including a thin-film transistor and a pixel electrode formed above a substrate, and an organic insulation film formed between one electrode of the thin-film transistor and the pixel electrode. The one electrode and the pixel electrode are connected through a contact hole formed in the organic insulation film, and a sidewall of the contact hole, which is made of the organic insulation film, is tapered. An underlying layer beneath the organic insulation film, in contact with to the organic insulation film, includes a lowermost plane extending substantially in parallel to a plane of the substrate and an uppermost plane extending substantially in parallel to the plane of the substrate. A single step of the underlying layer is formed so as to extend between the lowermost plane and the uppermost plane. | 02-26-2015 |