PIXEL CIRCUIT DISPLAY APPARATUS AND ELECTRONIC APPARATUS EQUIPPED WITH CURRENT DRIVING TYPE LIGHT-EMITTING DEVICE
First Claim
1. A display apparatus, comprising:
- a current driving type light-emitting device provided for each pixel;
a driving device provided for each of said pixels, for controlling a driving current flowing to said light-emitting device according to a voltage of a data signal;
a power source unit for supplying power source through a power wire to cause said driving current to flow to said light-emitting device via said driving device;
a signal wire driving unit for supplying said data signal to said driving device through a signal wire; and
a voltage adjusting unit for adjusting at least one of said power source of said power source unit and said data signal at said signal wire driving unit, in such a manner that, when a data signal of a predetermined voltage is supplied to said driving device through said signal wire, at least one of a quantity of driving current flowing and a quantity of light emitted by said light-emitting device comes close to a predetermined reference value.
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Accused Products
Abstract
A display apparatus (100) is provided with a current driving type light-emitting device (224) and a driving device (223) for controlling a driving current flowing through the light-emitting device for each pixel. The display apparatus comprises power source units (13, 14) for supplying power source for causing a driving current to flow via the driving device to the light-emitting device via a power source wire and signal wire driving units (11, 12) for supplying a data signal to the driving device via signal wires (131, 132). In addition, voltage adjusting units (16-23) adjust a voltage from a power source from the power source units or a data signal from the signal wire driving unit so that a quantity of current of a driving current flowing through the light-emitting device in such a manner that, when a data signal of a predetermined voltage is supplied to the driving device via signal wires or a quantity of emitted light emitted from the light-emitting device comes close to a predetermined reference value.
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Citations
55 Claims
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1. A display apparatus, comprising:
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a current driving type light-emitting device provided for each pixel;
a driving device provided for each of said pixels, for controlling a driving current flowing to said light-emitting device according to a voltage of a data signal;
a power source unit for supplying power source through a power wire to cause said driving current to flow to said light-emitting device via said driving device;
a signal wire driving unit for supplying said data signal to said driving device through a signal wire; and
a voltage adjusting unit for adjusting at least one of said power source of said power source unit and said data signal at said signal wire driving unit, in such a manner that, when a data signal of a predetermined voltage is supplied to said driving device through said signal wire, at least one of a quantity of driving current flowing and a quantity of light emitted by said light-emitting device comes close to a predetermined reference value. - View Dependent Claims (2, 3, 4, 5, 53)
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6. A display apparatus, comprising:
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a current driving type display light-emitting device provided for each pixel of a display region;
a driving device provided for each said pixel, for controlling a driving current flowing to said display light-emitting device according to a voltage of a data signal;
a power source unit for supplying power source through a power wire to cause said driving current to flow to said display light-emitting device via said driving device;
a signal wire driving unit for supplying said data signal to said driving device through a signal wire;
a current driving type monitoring light-emitting device provided in a monitoring region and driven by current in the same manner as said display light-emitting device; and
a voltage adjusting unit for adjusting at least one of said power source of said power source unit and said data signal at said signal wire driving unit, in such a manner that at least one of a quantity of driving current flowing and a quantity of light emitted by said monitoring light-emitting device comes close to a predetermined reference value. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54)
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14. A pixel circuit provided for each of a plurality of matrix pixels constituting a display region of a display apparatus having, at least, a signal wire to be supplied with a data signal and first and second feeder lines for supplying power source to flow a driving current, said pixel circuit comprising:
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a current driving type light-emitting device connected between said first and second feeder lines;
a first thin film transistor controlling said driving current flowing through said light-emitting device via a source and a drain connected between said first and second feeder lines in series to said light-emitting device in accordance with a voltage of said data signal supplied to a gate; and
a driving current compensation device for increasing said driving current according to at least one of a decrease in a quantity of driving current and a decrease in a quantity of light emitted from said light-emitting device.
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38. A display apparatus comprising:
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a current driving type light-emitting device provided for each pixel;
a driving device provided for each said pixel, for controlling a driving current flowing to said light-emitting device according to a voltage of a data signal;
a power source unit for supplying power source through a power wire to cause said driving current to flow to said light-emitting device via said driving device;
a signal line driving circuit for supplying, through a signal line, a data signal having a voltage corresponding to an image signal input from an image signal source to said driving device;
a measuring unit for measuring at least one of a quantity of driving current flowing through said light-emitting device and a quantity of light emitted from said light-emitting device at the time when a data signal of a predetermined voltage is supplied to said driving device via said signal line; and
a correction circuit provided between said image signal source and said signal line driving circuit, for inputting said image signal to said signal line driving circuit after correcting said image signal in such a manner that at least one of said measured quantity of driving current and said measured quantity of emitted light comes close to a predetermined reference value. - View Dependent Claims (55)
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Specification