| 摘要 |
<p>PURPOSE:To make remedy with static electricity for the matrix circuit board. CONSTITUTION:Guard rings 40, 41 connected to circuit wirings 27 are formed to the outer peripheral part of the circuit wirings 27 of the matrix circuit board 26 constituted by forming the circuit wirings 27 having source wirings 18, gate wirings 16 and switching elements 20 arranged a matrix form on a substrate 24. Start controllers 38 for applying voltages to the circuit wirings 27 are formed in the guard rings 40, 41. The sure switching on of the switching elements 20 in the circuit wirings 27 is possible by previously applying the adequate voltages to the circuit wirings 27 by the start controllers 38. The electrification of pixel electrodes 22 is thus prevented and the deterioration of the switching elements 20 is prevented even if static electricity is generated.</p> |
