IP Library › Granted Patent US 11,749,183
Granted Patent B2
US 11,749,183 · App. 17/949,786 · Granted Sep 5, 2023

Electro-optical device and electronic apparatus

Inventor: Yoichi Momose (Matsumoto, JP)
Assignee: SEIKO EPSON CORPORATION
G09G3/32G09G2310/08
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Quick Facts
Patent No.
US 11,749,183
App. No.
17/949,786
Granted
Sep 5, 2023
Kind
B2
Abstract

In an odd frame, a plurality of scanning lines are selected sequentially, and in one pixel circuit, when a scanning line corresponding to the one pixel circuit is selected, a first selector electrically couples one end of a first capacitance element to a data line, and a second selector electrically couples one end of a second capacitance element to the gate node of a transistor. In an even frame, the plurality of scanning lines are selected sequentially, and when the scanning line is selected, the first selector electrically couples one end of the second capacitance element to the data line, and the second selector electrically couples one end of the first capacitance element to the gate node.

Claims (33)

1. An electro-optical device comprising

a plurality of pixel circuits provided corresponding to intersections between a data line and a plurality of scanning lines, each of the plurality of pixel circuits including a first selector, a second selector, a first capacitance element, a second capacitance element, a drive transistor, and a light-emitting element,

the drive transistor being configured to supply, to the light-emitting element, a current corresponding to a voltage of a gate node, wherein

in a first frame,

the plurality of scanning lines are selected sequentially,

the first selector in one pixel circuit of the plurality of pixel circuits electrically couples, when one scanning line corresponding to the one pixel circuit is selected, one end of the first capacitance element to the data line, and

the second selector in the one pixel circuit electrically couples one end of the second capacitance element to the gate node, and

in a second frame different from the first frame,

the plurality of scanning lines are selected sequentially,

the first selector in the one pixel circuit electrically couples, when the one scanning line is selected, one end of the second capacitance element to the data line, and

the second selector in the one pixel circuit electrically couples one end of the first capacitance element to the gate node.

2. The electro-optical device according to claim 1 , wherein

the first selector includes:

a first switching element that is brought into an ON state or an OFF state between the data line and one end of the first capacitance element; and

a second switching element that is brought into an ON state or an OFF state between the data line and one end of the second capacitance element, and

the second selector includes:

a third switching element that is brought into an ON state or an OFF state between one end of the first capacitance element and the gate node; and

a fourth switching element that is brought into an ON state or an OFF state between one end of the second capacitance element and the gate node.

3. The electro-optical device according to claim 2 , further comprising:

a higher power supply wiring, and

a lower power supply wiring, wherein

the pixel circuit includes a fifth switching element, and

the fifth switching element and the drive transistor are coupled in series between the higher power supply wiring and the lower power supply wiring.

4. The electro-optical device according to claim 3 , wherein

the fifth switching element is brought into an ON state in all or a part of a period in which the plurality of scanning lines are selected one by one sequentially.

5. The electro-optical device according to claim 2 , wherein

the pixel circuit includes a third capacitance element configured to hold a threshold voltage of the drive transistor and

the third capacitance element

is interposed, in the first frame, between one end of the second capacitance element and the gate node, and

is interposed, in the second frame, between one end of the first capacitance element and the gate node.

6. The electro-optical device according to claim 5 , wherein

the pixel circuit includes a sixth switching element configured to bring the drive transistor into a diode coupling state.

7. An electronic apparatus comprising the electro-optical device according to claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2022
From: MOMOSE, YOICHI
To: SEIKO EPSON CORPORATION
Reel/Frame 061171/0392 →
Priority Claims (1)
JP 2021-153937 · Sep 22, 2021 · national
Continuity (1)
Related Publication 20230091789A1 · Mar 23, 2023