Display apparatus, source driver and display panel
First Claim
1. A display apparatus, comprising:
- a display panel provided with a pixel section including a light-emitting device driven by a current and with a signal line connected to the pixel section; and
a source driver for supplying a drive current to the pixel section via the signal line, wherein the source driver includes;
a register for latching display data having N bits and for outputting the display data;
a timing control unit for outputting a control signal; and
a current driver for allowing the drive current which has been set at an arbitrary value to flow during a given period in a current setting mode, while allowing the drive current which has been set with the display data output from the register to flow during operation periods other than the given period, in accordance with the control signal, wherein thr current driver includes;
a current moder D/A converter including N current sources for outputting currents according to the bits of ther display data;
an additional current source for outputting a current with an arbitrary value; and
a first switch for receiving the control signal and electrically connecting the additional current source and the pixel section to each other only during the given period in the current setting mode.
4 Assignments
0 Petitions
Accused Products
Abstract
An organic EL display apparatus includes: a display panel on which a plurality of pixel sections are provided; source drivers provided with pixel drivers, which includes current drivers for supplying drive currents to the pixel sections, registers for latching data signals and timing control units; signal lines for supplying the drive currents from the current drivers to the pixel sections. Each of the current drivers is controlled by the associated timing control unit to allow a current larger than or equal to a current which is set in accordance with the data signal to flow only during a given period in a current setting mode, so that the value of a current flowing in the pixel section reaches a target value in a short time.
-
Citations
12 Claims
-
1. A display apparatus, comprising:
-
a display panel provided with a pixel section including a light-emitting device driven by a current and with a signal line connected to the pixel section; and a source driver for supplying a drive current to the pixel section via the signal line, wherein the source driver includes; a register for latching display data having N bits and for outputting the display data; a timing control unit for outputting a control signal; and a current driver for allowing the drive current which has been set at an arbitrary value to flow during a given period in a current setting mode, while allowing the drive current which has been set with the display data output from the register to flow during operation periods other than the given period, in accordance with the control signal, wherein thr current driver includes; a current moder D/A converter including N current sources for outputting currents according to the bits of ther display data; an additional current source for outputting a current with an arbitrary value; and a first switch for receiving the control signal and electrically connecting the additional current source and the pixel section to each other only during the given period in the current setting mode. - View Dependent Claims (2, 3)
-
-
4. A display apparatus, comprising:
-
a display panel provided with a pixel section including a light-emitting device driven by a current and with a signal line connected to the pixel section; and a source driver for supplying a drive current to the pixel section via the signal line, wherein the source driver includes; a register for latching display data having N bits and for outputting the display data; a timing control unit for outputting a control signal; and a current driver for allowing the drive current which has been set at an arbitrary value to flow during a given period in a current setting mode, while allowing the drive current which has been set with the display data output from the register to flow during operation periods other than the given period, in accordance with the control signal, wherein the current driver is a current mode D/A converter including; N current sources for outputting currents according to the bits of the display data; second switches respectively provided on output paths of currents flowing in the respective N current sources; N bypasses for shunting and outputting the currents flowing in the N current sources, by way of the respective second switches; and third switches respectively provided on the N bypasses, wherein the third switches are ON with the control signal during the given period in the current setting mode, whereas the third switches are OFF with the control signal during the operation periods other than the given period.
-
-
5. A display apparatus, comprising:
-
a display panel provided with a pixel section including a light-emitting device driven by a current and with a signal line connected to the pixel section; and a source driver for supplying a drive current to the pixel section via the signal line, wherein the source driver includes; a register for latching display data having N bits and for outputting the display data; a timing control unit for outputting a control signal; and a current driver for allowing the drive current which has been set at an arbitrary value to flow during a given period in a current setting mode, while allowing the drive current which has been set with the display data output from the register to flow during operation periods other than the given period, in accordance with the control signal, wherein the value of the current output from the current driver changes stepwise during the given period in the current setting mode and, wherein the current driver is a current mode D/A converter including; N current sources for outputting currents according to the bits of the display data; second switches respectively provided on output paths of currents flowing in the respective N current sources; N bypasses for shunting and outputting the currents flowing in the N current sources, by way of the respective second switches; and third switches respectively provided on the N bypasses, wherein during the given period in the current setting mode, the third switches are turned ON with the control signal and then turned OFF sequentially from the third switch connected to the current source associated with the most significant bit.
-
-
6. A display apparatus, comprising:
-
a display panel provided with a pixel section including a light-emitting device driven by a current and with a signal line connected to the pixel section; and a source driver for supplying a drive current to the pixel section via the signal line, wherein the source driver includes; a register for latching display data having N bits and for outputting the display data; a timing control unit for outputting a control signal; and a current driver for allowing the drive current which has been set at an arbitrary value to flow during a given period in a current setting mode, while allowing the drive current which has been set with the display data output from the register to flow during operation periods other than the given period, in accordance with the control signal, wherein the source driver further includes; voltage setting means for outputting a given voltage; and a comparator for comparing the output voltage of the voltage setting means with an output voltage of the current driver and outputting the comparison result to the timing control unit, wherein while the drive current with the arbitrary value flows from the current driver during the given period, the value of the drive current is switched to a current value set with the display data corresponding to a detection that the output voltage of the current driver becomes equal to the output voltage of the voltage setting means. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
Specification