Patent ID: 8373638
Filing Date: 2013-02-12
Classification: G09G

Abstract:
1. A display apparatus comprising: a plurality of scan signal lines and a plurality of data signal lines that cross each other; a plurality of pixels formed at each crossing of the scan signal lines and the data signal lines, wherein each of the pixels includes sub-pixels that display red color, green color, blue color and white color in response to a scan signal from the scan signal lines and a data signal from the data signal lines, wherein the sub-pixels are arranged in a 2×2 matrix; a first scan signal driving circuit including (2N−1)th stages that supplies the scan signal to odd-numbered scan signal lines among the scan signal lines, wherein N is a positive integer; a second scan signal driving circuit including (2N)th stages that supplies the scan signal to even-numbered scan signal lines among the scan signal lines; and a data signal driving circuit that supplies the data signal to the data signal lines, wherein the first and the second scan signal driving circuits, the pixels, the scan signal lines and the data signal lines are formed on a same substrate, wherein an output signal of a first stage is inputted as a start signal of a third stage, an output signal of the third stage is inputted as a reset signal of the first stage, an output signal of a second stage is inputted as a start signal of a fourth stage, and an output signal of the fourth stage is inputted as a reset signal of the second stage, wherein each of the stages included in the first and the second scan signal driving circuits includes a pull-up transistor that charges any one of the gate lines by using a first clock signal in response to a voltage on a Q node, a pull-down transistor that discharges any one of the gate lines in response to a voltage on a QB node and a controller (C) that controls the Q node and the QB node, wherein the controller (C) charges the Q node in response to a start signal, discharges the Q node in response to the voltage on the QB node and an output signal of a next stage, discharges the QB node in response to the start signal, a second clock signal delayed by one clock interval from the first clock signal, and the voltage on the Q node, and charges the QB node in response to a fourth clock signal delayed by two clock intervals from the second clock signal, and wherein the controller includes: a first transistor ( a second transistor ( a third transistor ( a fourth transistor ( a fifth transistor ( a sixth transistor ( a seventh transistor ( an eighth transistor ( a ninth transistor ( a tenth transistor (