Japan Display Inc.

Kabushiki Kaisha Toshiba

Kohei Kinoshita

Chihiro Tanaka

Kan Shimizu

Hirofumi Kato

Tooru Arai

Hiroyoshi Murata

A display device includes: pixel electrodes including a first pixel electrode and a second pixel electrode adjacent to the first pixel electrode in a first direction; switching elements including a first switching element coupled to the first pixel electrode and a second switching element coupled to the second pixel electrode; gate lines including a first gate line coupled to the first switching element and a second gate line coupled to the second switching element; a gate driver supplying a gate signal to the gate lines; and drive electrodes including a first drive electrode and a second drive electrode adjacent to the first drive electrode in the first direction. The first drive electrode overlaps the first and second pixel electrodes, and the second gate line. The second drive electrode overlaps the first gate line. The gate driver supplies the gate signal to the first and second gate lines simultaneously.

Display device

A display device includes a display panel, a printed circuit board attached to the display panel and including a ground potential supply terminal, a circuit, and a wiring pattern electrically coupling the ground potential supply terminal and the circuit, and a housing that contacts a coupling place provided to the wiring pattern and is attached to the printed circuit board through the coupling place. The wiring pattern includes a terminal wiring pattern electrically coupled with the ground potential supply terminal, a circuit wiring pattern branched from a branch part at a predetermined position on the terminal wiring pattern and electrically coupled with the circuit, and a housing wiring pattern branched from the branch part of the terminal wiring pattern and electrically coupled with the coupling place, and the circuit wiring pattern and the housing wiring pattern are uncoupled with each other at any place other than the branch part.

Display device and printed circuit board

A picture control device is used for driving a flat-panel display having a plurality of horizontal pixel lines each formed of display pixels arranged in one line, and composed of first and second driver groups which are arranged to divide the display pixels into groups and drive the groups of display pixels, respectively, and a drive circuit board for controlling the driver groups to output pixel data assigned to the respective display pixels during a scanning period for each horizontal pixel line and to drive the display pixels according to the pixel data. In particular, the drive circuit board includes a gate-array control section connected to the first and second driver groups by first and second wiring lines electrically separated from each other, for distributing pixel data assigned to the display pixels of each group to a corresponding driving group via a corresponding wiring line.

Picture control device and flat-panel display device having the picture control device

A display device disclosed includes a liquid crystal display panel, a signal-line driver circuit responsive to image data Data and a first clock signal CK1 for generating signals supplied to signal lines, a control signal generator circuit (12) responsive to a reference clock signal for generating and issuing first clock signal CK1 and adjustment clock signals SCK, and a delay-time adjuster circuit (14) which delays the image data by a specified time interval based on a corresponding adjustment clock signal SCK from the control signal generator circuit (12) to adjust the delay time of the first clock signal CK1 as generated by the control signal generator circuit (12) with respect to the image data Data, wherein this delay-time adjuster circuit (14) is provided with phase-locked loop or PLL circuits (16) for correction of the adjustment clock signals SCK, and a PLL circuit (34) for correction of the first clock signal CK1 being supplied to the signal-line driver circuit, thereby causing the first clock signal CK1 and the image data Data to be kept exactly in phase with each other.

Display device including a phase adjuster

A flat-panel display device includes a display panel having a plurality of pixels arrayed in a matrix, the pixels in each row forming one horizontal pixel array, first to eighth driver sections arranged in series to divide pixels in each horizontal pixel array into eight pixel blocks, for driving the pixel blocks, respectively, first and second data supply buses each connected to at least one of the driver sections, and a liquid crystal controller for distributing pixel data sequentially supplied from outside to the first and second data supply buses. In particular, the liquid crystal controller includes a data distributing circuit having a plurality of memories each of which stores items of pixel data for one pixel block and is capable of reading from one area while writing to another area, a total memory capacity of the memories being smaller than a memory capacity required for storing all items of pixel data for one horizontal pixel array, and a sequence controller for performing a control of dividing pixel data items sequentially supplied from outside into pixel-data blocks each consisting of the same number of pixel data items, equivalent to the number of pixels forming one pixel block, sequentially writing two pixel-data blocks in two memories, reading two pixel-data blocks stored in the two memories in parallel while writing is performed, and supplying the two pixel-data blocks to corresponding ones of the first and second data supply buses.

Growing community of inventors

Tokyo, Japan

Kohei Kinoshita