Semiconductor integrated circuit, self-luminous display panel module, electronic apparatus, and method for driving power supply line
AssigneeSony Corporation
InventorsHiroshi Hasegawa, Teppei Isobe
Life of this patent
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Abstract
A semiconductor integrated circuit and corresponding display panel and electronic apparatus. A pixel element includes a self-luminous element and a drive transistor connected to a power supply line. In an emission period of the self-luminous element, an active voltage and an intermediate voltage are sequentially applied between the power supply line and a potential line with a pulse-shaped waveform such that a predetermined luminance duration is obtained in the emission period. In a non-emission period of the self-luminous element, an off-state voltage is applied between the power supply line and the potential line so as to maintain the self-luminous element in a non-emission state.
Claims30
A display device comprising:
- a pixel element including a self-luminous element and a drive transistor, connected serially between a power supply line and a cathode electrode of the self-luminous element, wherein the power supply line being connected to a current terminal of the drive transistor,
- a control circuitry configured to drive the pixel element so as to control a voltage between an anode electrode of the self-luminous element and the cathode electrode;
- wherein the control circuitry is configured to:
- repeatedly switch between an active state and an intermediate state so as to obtain a predetermined luminance duration in an emission period, wherein the active state is a state that the self-luminous element emits light and the intermediate state is a state that the self-luminous element is turned off without receiving a reverse-biased potential at the anode electrode, and
- apply an off-state voltage between the anode electrode and the cathode electrode during a non-emission period.
A display apparatus comprising a display panel and the control circuitry,
- wherein the display panel includes a plurality of pixel elements;
- one of the pixel elements including a self-luminous element and a drive transistor, connected serially between a power supply line and a cathode electrode of the self-luminous element, wherein the power supply line being connected to a current terminal of the drive transistor;
- the control circuitry is configured to drive one of the pixel element so as to control a voltage between an anode electrode of the self-luminous element and the cathode electrode, and
- wherein the control circuitry is further configured to:
- repeatedly switch between an active state and an intermediate state in an emission period, wherein the active state is a state that the self-luminous element emits light and the intermediate state is a state that the self-luminous element being turned off without receiving a reverse-biased potential at the anode electrode, and
- an off-state voltage is applied between the anode electrode and the cathode electrode during a non-emission period.
A method for driving a display device, the display device comprising a pixel element including a self-luminous element and a drive transistor, connected serially between a power supply line and a cathode electrode of the self-luminous element, wherein the power supply line being connected to a current terminal of the drive transistor,
- the method comprising:
- applying an off-state voltage between an anode electrode of the self-luminous element and the cathode electrode during a non-emission period;
- repeatedly switching a state of the self-luminous element between an active state and an intermediate state so as to obtain a predetermined luminance duration in an emission period, wherein the active state is a state that the self-luminous element emits light and the intermediate state is a state that the self-luminous element being turned off without receiving a reverse-biased potential at the anode electrode.
Dependencies are inferred from the claim text.