Patent ID: 7532190
Filing Date: 2009-05-12
Classification: G09G

Abstract:
1. A driver device for a display device, for switching an original resolution to a target resolution in response to a gate control signal, comprising: a pixel circuit, generating an image in response to a gate driving signal and a source driving signal; a gate driving circuit, coupled to said pixel circuit via a plurality of gate lines, one of an original gate driving signal and a target gate driving signal is selected to be a. gate driving signal in response to a gate control signal, wherein said original gate driving signal and said target gate driving signal are controlled by a switch circuit; and a source driving circuit coupled to said pixel circuit via a plurality of source lines, generating said source driving signal in response to a source control signal, wherein said gate driving circuit comprises: a plurality of shift registers, for outputting said gate driving signal; and a plurality of shift register switches, for switching between following two conditions A and B in order to choose from one of said original gate driving signal and said target gate driving signal according to said gate control signal, wherein A: said shift registers activating said shift registers being one stage behind, and B: said shift registers activating said shift registers being two stages behind, wherein when said shift register switches switch to condition B, said gate control signal is input to a first shift register and a second shift register of said shift registers at a same time with respect to the gate control signal, and when said shift register switches switch to condition A, said gate control signal is input to the first shift register and the second shift register in series with respect to the gate control signal, and wherein number of distinguishable pixels in response to the condition B is one half of number of distinguishable pixels in response to the condition A, wherein in condition A, the first shift register is switched by at least one of the plurality of the register switches to connect to the second shift register, and the gate control signal is input to the first shift register and the first shift register outputs to the second shift register, and wherein in condition B, the first shift register is switched by said at least one of the plurality of register switches to disconnect from the second shift register.