摘要:
A source driver of the present invention is for driving a source signal line provided in a liquid crystal display device and varies, based on distribution of an optimum common-electrode electric potential calculated by a flicker minimum value determining method over a line perpendicular to video signal lines, an electric potential of an output signal in accordance with to which video signal line the output signal is to be outputted. A center electric potential of the output signal is greater as the video signal line is farther from an approximate center of a display surface of the liquid crystal display device toward at least one end of the display surface. Thus, the present invention provides a video signal line driving circuit for preventing (i) in-plane flicker which arises due to distribution of an optimum electric potential varying in accordance with distances from a scanning signal line driving circuit and (ii) in-plane flicker which arises due to distances from the scanning signal lines and shifts by CS trunk line resistance.
摘要:
In a display device of the present invention, a total fluctuation calculation portion (23) included in a display control circuit (200) calculates total amounts of potential fluctuations of drive video signals to be applied to video signal lines during one frame period based on external display data signals (DATs). For a pixel formation portion to be provided with a display data signal (DATp) (corresponding to the next display row of the previous frame) received from frame memory (22), a data correction portion (24) performs correction to compensate for impact to be caused by potential fluctuations of an opposite video signal line adjacent but not connected to the pixel formation portion. As a result, the instant delta-arrangement color display device allows horizontal streaks, which are caused by potential fluctuations of opposite video signal lines as mentioned above, to be reduced or eliminated using a simplified configuration.
摘要:
In an active matrix display device including pixels of three colors having a stripe arrangement or a delta arrangement, n (n denotes a multiple of 3 that is 6 or larger) adjacent data lines form one group and are connected to a source signal output line. The ON/OFF of a selection switch provided for each data line is controlled so that, among the n data lines forming one group, data lines corresponding to pixels of a color with a contribution to brightness smaller than a contribution of at least another color among the three colors are connected first and last with the source signal output line during one horizontal period.
摘要:
A signal circuit of the present invention includes (i) a plurality of signal sources; (ii) a plurality of source lines; and driving means for driving the data lines, the source lines being divided into a plurality of groups, each of the groups including three source lines, adjacent groups constituting one block, wherein: the driving means selects groups which belong to a clump of blocks including a first block, and a second block adjacent to the first block so that, (i) during a first predetermined period, the driving means simultaneously selects groups that belong to the first block, and simultaneously selects groups that belong to the second block, and (ii) during a second predetermined period subsequent to the first predetermined period, the driving means selects groups one by one from groups disposed at respective ends of the clump of blocks, simultaneously selects adjacent groups that belong to different blocks, and selects remaining groups one by one. With this arrangement, it becomes difficult for display unevenness having a vertical-striped shape to be noticeable due to the change in electric potential.
摘要:
In an active matrix display device having six or more data lines grouped to be connected to one output signal line of a data line drive circuit and including a color filter, the degradation of an image quality due to a parasitic capacitance or the like can be reduced effectively. In an active matrix display device including pixels of three colors having a stripe arrangement or a delta arrangement, n (n denotes a multiple of 3 that is 6 or larger) adjacent data lines DLs form one group and are connected to a source signal output line SO. The ON/OFF of a selection switch ASW provided for each data line DL is controlled so that, among the n data lines forming one group, data lines corresponding to pixels of a color with a contribution to brightness smaller than a contribution of at least another color among the three colors, e.g., blue of RGB, are connected first and last with the source signal output line SO during one horizontal period.
摘要:
A signal circuit of the present invention includes (i) a plurality of signal sources; (ii) a plurality of source lines; and driving means for driving the data lines, the source lines being divided into a plurality of groups, each of the groups including three source lines, adjacent groups constituting one block, wherein: the driving means selects groups which belong to a clump of blocks including a first block, and a second block adjacent to the first block so that, (i) during a first predetermined period, the driving means simultaneously selects groups that belong to the first block, and simultaneously selects groups that belong to the second block, and (ii) during a second predetermined period subsequent to the first predetermined period, the driving means selects groups one by one from groups disposed at respective ends of the clump of blocks, simultaneously selects adjacent groups that belong to different blocks, and selects remaining groups one by one. With this arrangement, it becomes difficult for display unevenness having a vertical-striped shape to be noticeable due to the change in electric potential.
摘要:
In a clutch plate of an annular shape and a wet type, a plurality of lubrication grooves each taking a U-shape in cross-section are formed on a friction engaging surface on at least one end side. The groove is provided with a groove forming portion crossing the circumferential direction and blunt portions extending along both sides of the groove forming portion and connecting the friction engaging surface with the groove forming portion. Where a straight line passing across one side end of the groove and extending in a radial direction is assumed as a virtual straight line, in a section of the groove taken along a plane that is orthogonal to the virtual straight line and that includes the one side end, the width of the blunt portion on one side is in a range of 0.12 to 0.35 mm, and the depth of the blunt portion is in a range of 25 to 50 μm.
摘要:
In a clutch plate of an annular shape and a wet type, a plurality of lubrication grooves each taking a U-shape in cross-section are formed on a friction engaging surface on at least one end side. The groove is provided with a groove forming portion crossing the circumferential direction and blunt portions extending along both sides of the groove forming portion and connecting the friction engaging surface with the groove forming portion. Where a straight line passing across one side end of the groove and extending in a radial direction is assumed as a virtual straight line, in a section of the groove taken along a plane that is orthogonal to the virtual straight line and that includes the one side end, the width of the blunt portion on one side is in a range of 0.12 to 0.35 mm, and the depth of the blunt portion is in a range of 25 to 50 μm.
摘要:
An image data converting device of at least one embodiment of the present invention for converting, by linear interpolation, input image data having a predetermined resolution into delta arrangement image data having a resolution that is smaller than the predetermined resolution, the image data converting device includes: an even line pixel value converting section for converting a value of each pixel in each even line in the input image data into a value of each pixel in each even line in the delta arrangement image data, by using a predetermined initial value for even lines; and an odd line pixel value converting section for converting a value of each pixel in each odd line in the input image data into a value of each pixel in each odd line in the delta arrangement image data, by using a predetermined initial value for odd lines, the predetermined initial value for odd lines being (1±α)/2(0≦α≦0.5) of the initial value for the even lines. This allows conversion into an image that looks natural by controlling a jaggy and/or colored appearance of a contour section of the image, when image data having a high resolution is converted into the delta arrangement image data having a low resolution.
摘要:
The present invention relates to a video signal line drive circuit of a display device.An object of the present invention is to, when gradation conversion is performed in the display device using an error diffusion method, provide a display with a smooth gradation change even at boundaries of display blocks.In an error diffusion operation circuit (36) of a source driver unit (302), an error diffusion process is performed for each pixel based on, in addition to image data (Da) for a display block of the source driver unit (302), image data (Da) for areas near boundaries between the display block of the source driver unit (302) and display blocks of source driver units (301, 303) in previous and subsequent stages. A video signal is generated based on error-diffused image data (Db) generated by the error diffusion process.