摘要:
In one embodiment of the present invention, a driving method of a liquid crystal display device is disclosed. According to one embodiment of the present invention a driving method of an active matrix display device is disclosed including: a plurality of source lines; a plurality of gate lines that intersect the source lines; and a plurality of pixel formation sections being disposed in a matrix manner at the respective intersections of the source lines and the gate lines, each of the pixel formation sections receiving as a pixel value a voltage applied to the source line that passes through the corresponding intersection when the gate line that passes through the corresponding intersection is selected, wherein non-image signals are applied to the source lines in each horizontal scanning period, and the gate lines are selected in an effective scanning period, and thereafter the gate lines are selected, in sync with a timing of application of the non-image signals to the source lines, before the subsequent effective scanning period comes after a point in time when the gate lines have been brought into non-selected state.
摘要:
When each of R, G, and B pixels continuously display identical gray scales (1023 gray scale) in a liquid crystal display device in which the thicknesses of the liquid crystal layers are of R pixel>G pixel>B pixel, the R pixel is alternately supplied with a positive signal potential (SHR1023) and a negative signal potential (SLR1023), the G pixel is alternately supplied with a positive signal potential (SHG1023) and a negative signal potential (SLG1023), and the B pixel is alternately supplied with a positive signal potential (SHB1023) and a negative signal potential (SLB1023). A first middle value (SMR1023) that between SHR1023 and SLR1023 is set higher than a second middle value (SMG1023) that is between SHG1023 and SLG1023, and second middle value (SMG1023) is set higher than a third middle value (SMB1023) that is between SHB1023 and SLB1023.
摘要:
Each picture element includes first and second sub-picture elements, each of which includes a liquid crystal capacitor and at least one storage capacitor. After a display voltage representing a certain grayscale level has been applied to the respective sub-picture element electrodes of the first and second sub-picture elements, a voltage difference ΔVα is produced between voltages to be applied to the respective liquid crystal capacitors of the first and second sub-picture elements by way of their associated storage capacitor(s). By setting the voltage difference ΔVα value of the blue and/or cyan picture element(s) to be smaller than that of the other color picture elements, shift toward the yellow range at an oblique viewing angle can be minimized.
摘要:
In a liquid crystal display, a first data signal line and a second data signal line are provided for each pixel column. In at least one embodiment, in a case where every two pixels in the pixel column are paired, one of two pixels in each pair is connected with the first data signal line and the other of the two pixels is connected with the second data signal line, two scanning signal lines respectively connected with the two pixels are simultaneously selected during one horizontal scanning period so that signal potentials are written into the two pixels from the first data signal line and the second data signal line, respectively, during each horizontal scanning period, supply of the signal potentials to the first data signal line and the second data signal line is performed after supply of preliminary potentials to the first data signal line and the second data signal line. This allows improving the display quality of a liquid crystal display in which a larger size, higher definition, or higher-speed driving etc. makes full charging of pixels difficult even when simultaneous scanning.
摘要:
In each pixel region, (i) a first pixel electrode (17a) connected to a first transistor (12a), (ii) a second pixel electrode (17b) connected to a second transistor (17b), (iii) a coupling electrode (67y), and (iv) first and second capacitor electrodes (67x and 67z) provided in a layer in which a data signal line (15) is provided, being provided, a capacitor being defined by the coupling electrode (67y) and the second pixel electrode (17b), the coupling electrode (67y) being connected to the first pixel electrode (17a) via a third transistor (112), the first capacitor electrode (67x) and a retention capacitor line (18) overlapping each other via a gate insulating film, the first capacitor electrode (67x) being connected to the first pixel electrode (17a), the second capacitor electrode (67z) and the retention capacitor line (18) overlapping each other via the gate insulating film, the second capacitor electrode (67z) being connected to the second pixel electrode (17b). This allows an increase in pixel aperture ratio of a capacitively coupled active matrix substrate having three transistors.
摘要:
Disclosed is an active matrix including a scanning signal line (16x), a data signal line (15x), and a first insulating film; and including, in a pixel region (101), a transistor (12a), a first pixel electrode (17a) connected to the data signal line via the transistor, a second pixel electrode (17b), a first capacitor electrode (87) electrically connected to the first pixel electrode (17a), and a second capacitor electrode (47) electrically connected to the second pixel electrode (17b), wherein the first capacitor electrode is provided in a same layer as the scanning signal line, the second capacitor electrode is provided in a same layer as the data signal line, and the first and second capacitor electrodes (87, 47) overlap each other by having the first insulating film sandwiched therebetween to form a capacitor between the first and second capacitor electrodes (87, 47). This allows reducing image sticking of a pixel electrode corresponding to a dark sub-pixel while holding down short-circuiting in a coupling capacitor formed part, in an active matrix substrate of a capacitively coupled pixel division mode.
摘要:
A liquid crystal panel includes: an active matrix substrate (3) including a transparent substrate (31) formed with a transistor, a pixel electrode, and a signal wire; a color filter substrate (30) including a transparent substrate (32) formed with a common electrode; a liquid crystal material (40) disposed between the substrates (3, 30); and a spherical main spacer (2m) contacting the active matrix substrate (3) and the color filter substrate (30). The active matrix substrate (3) has a surface including a sub spacer region (SA) away from the transparent substrate (31) at a distance shorter than a distance between the transparent substrate and a portion where the surface of the active matrix substrate (3) contacts the main spacer (2m). A spherical sub spacer (2s) is disposed to overlap the sub spacer region (SA). This provides a liquid crystal panel where liquid crystal bubbles hardly occur even when the liquid crystal material contracts due to low temperature, etc.
摘要:
Provided are an active matrix substrate including plural pixel electrodes in a pixel region and a liquid crystal display device (pixel division mode) using the same. Proposed is a configuration of the liquid crystal display device of the capacitor-coupled pixel division mode which hardly causes reduction in display quality due to image-sticking of sub-pixels. The active matrix substrate includes: a data signal line (15x); scanning signal lines (16a and 16b); a transistor (12a) connected to the data signal line (15x) and scanning signal line (16a); a transistor (12b) connected to the data signal line (15x) and scanning signal line (16b); and pixel electrodes (17a and 17b) provided in a pixel region (101), the pixel electrode (17a) being connected to the data signal line (15x) via the transistor (12a), the pixel electrode (17b) being connected to the pixel electrode (17a) via a capacitor and the data signal line (15x) via the transistor (12b), and the transistors (12a and (12b) have identical W/L ratios of channels (each ratio of width W to length L of channel). The present invention can be configured with identical channel sizes without adjusting W/L ratios of channels of the transistors unlike a conventional configuration. Accordingly, deterioration of display quality due to variation in characteristics of transistors can be suppressed.
摘要:
Each pixel region includes first and second pixel electrodes (17a, 17b) and first and second capacitor electrodes (67x, 67y) positioned on a layer where a data signal line (15) exists. The first and second capacitor electrodes are aligned in a row direction in such a manner as to overlap a retention capacitor line (18) via a first insulating film and to overlap the second pixel electrode (17b) via a second insulating film. A drain electrode (9) of a transistor (12), the first pixel electrode (17a), a first connection line (38) connected with the first capacitor electrode (67x), and the second connection line connected with the second capacitor electrode (67y) are electrically connected with one another. A part of the first connection line (38) and a part of the second connection line (39) do not overlap the retention capacitor line (18). This allows increasing production yields of an active matrix substrate based on a capacitive coupling pixel division system and a liquid crystal panel including the active matrix substrate.
摘要:
A liquid crystal display uses a pixel division method by which the size of a defect can be reduced much more than conventionally possible, and a defect correcting method for the liquid crystal display. The liquid crystal display is provided with an active matrix array substrate including a plurality of gate lines and a plurality of source lines arranged on a transparent substrate to intersect with each other, and a plurality of pixel electrodes arranged in a matrix, each pixel electrode including an assembly of a plurality of sub-pixel electrodes, separate TFTs respectively connected to the sub-pixel electrodes in the vicinity of an intersection portion of the gate line and the source line, the TFTs being driven by the common gate line and the common source line, and at least one opening portion being formed in a lower-layer side line placed in a lower layer at the intersection portion.