Light emitting display driver and method thereof

• US 20060038753A1
• Filed: 07/19/2005
• Published: 02/23/2006
• Est. Priority Date: 08/20/2004
• Status: Abandoned Application

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Lee, Kyoung-Soo, Song, June-Young
• Application Number:
  US11/185,636
• Publication Number:
  US 20060038753A1
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 2360/04 Display device controller operating with a plurality of display units
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: G09G 3/3266 Details of drivers for scan electrodes

Abstract

A display panel driver of a light emitting display having a main panel disposed on a front surface and a sub panel disposed on a rear surface. The display panel driver includes a main scan driver sequentially applying selection signals to a plurality of scan lines in the main panel along a first direction, a sub scan driver sequentially applying selection signals to a plurality of scan lines in the sub panel along an opposite direction of the first direction, and a drive controller respectively controlling scanning directions of the main scan driver and the sub scan driver.

Claims

1. A display panel driver of a light emitting display having a main panel disposed on a front surface and a sub panel disposed on a rear surface, the display panel driver comprising:

a main scan driver sequentially applying selection signals to a plurality of scan lines in the main panel along a first direction;

a sub scan driver sequentially applying selection signals to a plurality of scan lines in the sub panel along an opposite direction of the first direction; and

a drive controller respectively controlling scanning directions of the main scan driver and the sub scan driver.

2. The display panel driver of claim 1, wherein the scanning direction of the main scan driver is a direction from an upper portion to a lower portion of the main panel.

3. The display panel driver of claim 1, wherein the scanning direction of the sub scan driver is a direction from a lower portion to an upper portion of the sub panel.

4. The display panel driver of claim 1, wherein the drive controller is realized in a single driving integrated circuit.

5. A light emitting display comprising:

a main panel for a frontward display of the light emitting display;

a sub panel for a rearward display of the light emitting display;

a main scan driver sequentially applying respective selection signals to a plurality of scan lines in the main panel along a first direction;

a sub scan driver sequentially applying respective selection signals to a plurality of scan lines in the sub panel along an opposite direction of the first direction;

a data driver applying a data voltage to selected pixel circuits of the main panel and the sub panel, the data voltage corresponding to an image signal; and

a drive controller respectively controlling scanning directions of the main scan driver and the sub scan driver.

6. The light emitting display of claim 5, wherein the main panel and the sub panel share a data line applying the data voltage corresponding to the image signal.

7. The light emitting display of claim 5, wherein the scanning direction of the main scan driver is a direction from an upper portion to a lower portion of the main panel.

8. The light emitting display of claim 5, wherein the scanning direction of the sub scan driver is a scanning direction from a lower portion to an upper portion of the sub panel.

9. A method for driving a light emitting display having a main panel and a sub panel respectively for frontward and rearward display of the light emitting display, the driving method comprising:

setting scanning directions of a main scan driver and a sub scan driver opposite to each other;

sequentially applying selection signals to a plurality of scan lines of the main panel;

sequentially applying selection signals to a plurality of scan lines of the sub panel; and

realizing displays of the main panel and the sub panel by sequentially applying a plurality of data voltage corresponding to an image signal to selected pixel circuits of the main panel and the sub panel.

10. The driving method of claim 9, wherein the scanning direction of the main scan driver is a direction from an upper portion to a lower portion of the main panel.

11. The driving method of claim 9, wherein the scanning direction of the sub scan driver is a direction from a lower portion to an upper portion of the sub panel.