Display system
AssigneeHimax Technologies Limited
InventorsSsu-Chieh Yang, Yaw-Guang Chang, Hsien-Ting Huang
Life of this patent
Estimating the term…
Abstract
A display system includes a display device, a driving circuit, a flexible printed circuit (FPC), a charge pump circuit and a control circuit. The driving circuit is disposed on the display device, and utilized for driving the display device. The FPC is externally coupled to the display device. The charge pump circuit is disposed on the FPC, and utilized for generating at least an output voltage to the driving circuit. The control circuit is disposed on the display device and coupled to the driving circuit, and utilized for generating a control signal to control the charge pump circuit. The charge pump circuit has a control pin coupled to the control circuit for receiving the control signal generated from the control circuit.
Claims8
A display system, comprising:
- a display device, which comprises indium tin oxide (ITO) resistors;
- a driving circuit, disposed on the display device, for driving the display device;
- a flexible printed circuit (FPC), externally coupled to the display device;
- a charge pump circuit, disposed only on the FPC, for generating at least an output voltage to the driving circuit;
- and
- a control circuit, disposed on the display device and coupled to the driving circuit, for generating a control signal to control the charge pump circuit;
- wherein the charge pump circuit has a control pin coupled to the control circuit for receiving the control signal generated from the control circuit;
- and
- the charge pump circuit is disposed only on the FPC and is coupled to each of the driving circuit and the control circuit through the FPC without being directly connected to any of the driving circuit and the control circuit, so as to prevent a voltage converting efficiency of the charge pump circuit from being limited by the ITO resistors of the display device.
Dependencies are inferred from the claim text.