Device substrate
AssigneeSharp Kabushiki Kaisha
InventorYohsuke Fujikawa
Life of this patent
Estimating the term…
Abstract
An element-side substrate includes an element array area, an RGB switch circuit, and a source driver IC. The center of a terminal group coupled to video signal lines of the source driver IC is shifted (displaced) by a distance “g” leftward from the center of the RGB switch circuit, thereby making it possible to lengthen portions of bent left video signal lines that extend in the top-bottom direction while shortening portions of bent right video signal lines that extend in the top-bottom direction. As a result, it is possible to shorten a distance “h” between the source driver IC and the RGB switch circuit while fully avoiding interference with a large area occupied by left control lines and also avoiding interference with a small area occupied by right control lines.
Claims10
A device substrate including a plurality of elements located thereon, comprising:
- an element array section including a plurality of elements arranged in a matrix so as to define pluralities of rows and columns, and a first control circuit configured to control driving of the plurality of elements;
- a second control circuit contained entirely within an integrated circuit chip and configured to control driving of the plurality of elements, the integrated circuit chip having a long side shorter than a circumferential side of the element array section and being arranged with the long side approximately parallel to the circumferential side at a predetermined distance;
- a plurality of element lines, each comprising a first segment and a second segment, positioned between the first control circuit and the second control circuit and arranged to connect the first control circuit to a plurality of first terminals configured to transmit signals from the second control circuit to the first control circuit to be provided to the elements, the plurality of first terminals are located within the integrated circuit chip at a center of the long side;
- and
- a plurality of control lines including a first group of control lines arranged between the first control circuit and the second control circuit to connect connecting the first control circuit to a plurality of second terminals configured to transmit signals from the second control circuit to the first control circuit to control driving of the plurality of elements, the plurality of second terminals are located within the integrated circuit chip at a lateral end of the long side, wherein,
- the element lines are bent at a point where the first and second segments connect so as not to interfere with areas occupied by the plurality of control lines, and
- the second control circuit is arranged such that the center of the long side is displaced a predetermined distance from a position corresponding to a center of the circumferential side toward one of two lateral ends of the long side that includes more of the plurality of second terminals.
Dependencies are inferred from the claim text.