Title:
SIMPLE-MATRIX DISPLAY APPARATUS AND DRIVING CIRCUIT APPARATUS USED THEREFOR
Document Type and Number:
WIPO Patent Application WO/2006/106902
Kind Code:
A1
Abstract:
In a simple-matrix display apparatus in which wirings from a single-chip driver to common electrodes are distributed and connected to two sides of a display element, the brightness inclination caused by differences in length of the wirings to the common electrodes are compensated for, thereby achieving a display exhibiting a uniform brightness. A simple-matrix display apparatus comprises a display element (10) having common electrodes (y) and segment electrodes (x); and a driver IC (20) including a segment driving circuit and a common driving circuit. Wirings from the driver IC (20) are distributed and connected to two sides of the display element (10). The driver IC (20) comprises common output terminals (COM1A to COM120A) connected to respective ends of the common electrodes (y); common monitor terminals (COM1B,COM60B,COM61B,COM120B) connected to the other respective ends of a part of the common electrodes (y); and a voltage regulating circuit that regulates, based on monitor voltages at the common monitor terminals, the common drive voltages.
Inventors:
UMEKAWA ICHIRO
OHHARA KOHICHI
NAKAZONO HIDETAKA
OHHARA KOHICHI
NAKAZONO HIDETAKA
Application Number:
PCT/JP2006/306799
Publication Date:
October 12, 2006
Filing Date:
March 31, 2006
Export Citation:
Assignee:
SHARP KK (JP)
UMEKAWA ICHIRO
OHHARA KOHICHI
NAKAZONO HIDETAKA
UMEKAWA ICHIRO
OHHARA KOHICHI
NAKAZONO HIDETAKA
International Classes:
G09G3/36; G02F1/133; G09G3/20
Foreign References:
| JP2002182614A | 2002-06-26 | |||
| JPH03253817A | 1991-11-12 |
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, JP)
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