The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.
The gate driver 24 provides scan signals S1˜Sn to display array 22 for turning on all sub-pixels in the same row. Source driver 26 provides data signals D1R˜DmB to display array 22 according to a color separation method such that display array 22 displays an image.
In this embodiment, source driver 26 utilizes the color separation method to first provide data signals D1R˜DmR to sub-pixels R11˜Rmn, then provide data signals D1G˜DmG to sub-pixels G11˜Gmn, and finally provide data signals D1B˜DmB to sub-pixels B11˜Bmn.
Since sub-pixels R11˜Rmn display the red component, sub-pixels G11˜Gmn display the green component, and sub-pixels B11˜Bmn display the blue component, display array 22 first displays red, then green, and finally blue.
Source driver 26 comprises a gamma voltage generator 262 and a processing unit 264. Gamma voltage generator 262 provides gamma voltages SV1˜SVK. Processing unit 264 transforms gamma voltages SV1˜SVK into data signals D1R˜DmB and outputs data signals D1R˜DmB to one group of sub-pixels R11Rmn, G11˜Gmn, or B11˜Bmn.
In this embodiment, selection unit 34 is a multiplexer 342. When a control signal CKH1 of the control signal group SC is asserted, multiplexer 342 outputs parameter SR. When a control signal CKH2 of the control signal group SC is asserted, multiplexer 342 outputs parameter SG. When a control signal CKH3 of the control signal group SC is asserted, multiplexer 342 outputs parameter SB.
When resistor string 36 receives parameter SR, a first gamma curve is determined according to gamma voltages SV1˜SVK generated by resistor string 36. When resistor string 36 receives parameter SG, a second gamma curve is determined according to gamma voltages SV1˜SVK generated by resistor string 36. When resistor string 36 receives parameter SB, a third gamma curve is determined according to gamma voltages SV1˜SVK generated by resistor string 36.
Although gamma voltage generator 262 only comprises one resistor string, selection unit 34 selectively outputs one parameter SR, SG, or SB to the resistor string for generating gamma voltages SV1˜SVK. Thus, three gamma curves are determined by gamma voltages SV1˜SVK.
In this embodiment, switching unit 44 comprises transistors TN1R˜TNmB. When the control signal CKH1 is asserted, transistors TN1R˜TNmR outputs data signals D1˜Dm to sub-pixels R11˜Rm1 for displaying the red component. When the control signal CKH2 is asserted, transistors TN1G˜TNmG output data signals D1˜Dm to sub-pixels G11˜Gm1 for displaying the green component. When the control signal CKH3 is asserted, transistors TN1B˜TNmB output data signals D1˜Dm to sub-pixels B11˜Bm1 for displaying the blue component.
Because the control signals CKH1˜CKH3 are asserted in succession, data signals D1˜Dm are transmitted in succession to sub-pixels R11˜Rm1, G11˜Gm1, and B11˜Bm1. Thus, first sub-pixels R11˜Rm1 display the red component, then sub-pixels G11˜Gm1 display the green component, and finally sub-pixels B11˜Bm1 display the blue component.
While the invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Number | Date | Country | Kind |
---|---|---|---|
95127095 | Jul 2006 | TW | national |