Common voltage compensation circuit comprising a first resistor array and a second resistor array and compensation system for display panel
OwnerBo Xiaoinventor
Life of this patent
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Abstract
A common voltage compensation circuit and a compensation system for a display panel are provided. A compensation circuit includes a compensating unit configured to receive a common voltage outputted by the display panel; compensate the common voltage according to a compensation coefficient; and output the compensated common voltage to the display panel; and an adjusting unit configured to connect with a controlling unit in a phase of adjusting the display panel; receive an adjustment signal outputted by the controlling unit; and adjust the compensation coefficient of the compensating unit according to the adjustment signal.
Claims13
A common voltage compensation circuit for a display panel, comprising:
- a compensating unit configured to:
- receive a common voltage outputted by the display panel;
- compensate the common voltage according to a compensation coefficient;
- and output the compensated common voltage to the display panel;
- and
- an adjusting unit configured to:
- connect with a controller in a phase of adjusting the display panel;
- receive an adjustment signal outputted by the controller;
- and adjust the compensation coefficient of the compensating unit according to the adjustment signal;
- wherein the adjusting unit comprises:
- a resistor-array unit electrically connected to the compensating unit and configured to adjust the compensation coefficient of the compensating unit according to a change of resistance values;
- a switch unit electrically connected to the resistor-array unit and configured to adjust a resistance value of the resistor-array unit according to a working state of switches;
- and
- a signal-processer electrically connected to the switch unit and configured to:
- connect with the controller in the phase of adjusting the display panel;
- receive the adjustment signal outputted by the controller;
- and adjust a working state of switches in the switch unit according to the adjustment signal;
- wherein the resistor-array unit comprises a first resistor array and a second resistor array both electrically connected to the switch unit, and the compensation coefficient is a resistance ratio of the second resistor array to the first resistor array;
- and
- wherein the adjusting unit is further configured to adjust resistance values of the first resistor array and the second resistor array to adjust the compensation coefficient according to the adjustment signal.
Dependencies are inferred from the claim text.