Pixel unit and driving method thereof, display panel and driving method thereof, and display apparatus
US-2019371243-A1 · Dec 5, 2019 · US
Pixel circuit, display panel, display device and driving method
US11645977B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11645977-B2 |
| Application number | US-202017256183-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 21, 2020 |
| Priority date | May 31, 2019 |
| Publication date | May 9, 2023 |
| Grant date | May 9, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A pixel circuit, a display substrate, a display device and a driving method are provided. The pixel circuit includes a data writing sub-circuit and a driving sub-circuit, and the data writing sub-circuit is connected to a scan signal terminal, a control signal terminal, a data signal terminal and a drive sub circuit. The data writing sub-circuit is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal. The driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal.
First claim
Opening claim text (preview).
What is claimed is: 1. A pixel circuit, comprising: a data writing sub-circuit and a driving sub-circuit, wherein the data writing sub-circuit is connected to a control signal terminal, a scan signal terminal, a data signal terminal and a control node, respectively, and is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal; and the driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal. 2. The pixel circuit according to claim 1 , wherein the data writing sub-circuit comprises a switch portion and a data writing portion; the switch portion is connected to the control signal terminal, the scan signal terminal, and the data writing portion, respectively, and is used to output the scan signal to the data writing portion in response to the control signal; and the data writing portion is further connected to the data signal terminal and the control node, respectively, and is used to output the data signal to the control node in response to the scan signal. 3. The pixel circuit according to claim 2 , wherein the switch portion comprises a first switch transistor, wherein a gate of the first switch transistor is connected to the control signal terminal, a first electrode of the first switch transistor is connected to the scan signal terminal, and a second electrode of the first switch transistor is connected to the data writing portion. 4. The pixel circuit according to claim 2 , wherein the data writing portion comprises a second switch transistor; a gate of the second switch transistor is connected to the switch portion, a first electrode of the second switch transistor is connected to the data signal terminal, and a second electrode of the second switch transistor is connected to the control node. 5. The pixel circuit according to claim 1 , wherein the data writing sub-circuit comprises a switch portion and a data writing portion; the switch portion is connected to the control signal terminal, the data signal terminal and the data writing portion, respectively, and is used to output the data signal to the data writing portion in response to the control signal; and the data writing portion is further connected to the scan signal terminal and the control node, respectively, and is used to output the data signal to the control node in response to the scan signal. 6. The pixel circuit according to claim 5 , wherein the switch portion comprises a first switch transistor; a gate of the first switch transistor is connected to the control signal terminal, a first electrode of the first switch transistor is connected to the data signal terminal, and a second electrode of the first switch transistor is connected to the data writing portion. 7. The pixel circuit according to claim 5 , wherein the data writing portion comprises a second switch transistor; a gate of the second switch transistor is connected to the scan signal terminal, a first electrode of the second switch transistor is connected to the switch portion, and a second electrode of the second switch transistor is connected to the control node. 8. The pixel circuit according to claim 1 , wherein the driving sub-circuit comprises a drive transistor and a storage capacitor; a gate of the drive transistor is connected to the control node, a first electrode of the drive transistor is connected to the power signal terminal, and a second electrode of the drive transistor is connected to the light emitting element; and one terminal of the storage capacitor is connected to the control node, and the other terminal of the storage capacitor is connected to the second electrode of the drive transistor. 9. A display substrate, comprising: a plurality of gate lines, a plurality of data lines, a plurality of control signal lines, a plurality of power signal lines and a plurality of pixel units, wherein each of the pixel units comprises: a light-emitting element and a pixel circuit connected to the light-emitting element; the pixel circuit comprises: a data writing sub-circuit and a driving sub-circuit, the data writing sub-circuit is connected to a control signal terminal, a scan signal terminal, a data signal terminal and a control node, respectively, and is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal; the driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal; and each of the gate lines is connected to scan signal terminals of a row of the pixel circuits, each of the data lines is connected to data signal terminals of a column of the pixel circuits, each of the control signal lines is connected to control signal terminals of a column of the pixel circuits, and each of the power signal lines is connected to power signal terminals of a column of the pixel circuit. 10. The display substrate according to claim 9 , wherein the display substrate comprises the control signal lines having a number the same as the number of the data lines, and the control signal lines are disposed in parallel with the data lines. 11. The display substrate according to claim 9 , wherein one control signal line and one data line which are connected to each column of the pixel circuits are located at the same side of the column of pixel circuits. 12. A display device, comprising: a display substrate, a source drive circuit and a gate drive circuit, wherein the display substrate comprises: a plurality of gate lines, a plurality of data lines, a plurality of control signal lines, a plurality of power signal lines and a plurality of pixel units, each of the pixel units comprises: a light-emitting element and a pixel circuit connected to the light-emitting element; the pixel circuit comprises: a data writing sub-circuit and a driving sub-circuit, the data writing sub-circuit is connected to a control signal terminal, a scan signal terminal, a data signal terminal and a control node, respectively, and is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal; the driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal; each of the gate lines is connected to scan signal terminals of a row of the pixel circuits, each of the data lines is connected to data signal terminals of a column of the pixel circuits, each of the control signal lines is connected to control signal terminals of a column of the pixel circuits, and each of the power signal lines is connected to power signal terminals of a column of the pixel circuit; the gate drive circuit is connected to the plurality of gate lines in the display substrate, and is used to provide scan signals to the plurality of gate lines connected to the gate drive circuit; and the s
Assignees
Inventors
Classifications
Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver · CPC title
forming a linear amplifier or follower · CPC title
- G09G3/3241Primary
the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror · CPC title
Static memory circuit, e.g. flip-flop · CPC title
Layout of electrodes and connections · CPC title
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Frequently asked questions
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- What does patent US11645977B2 cover?
- A pixel circuit, a display substrate, a display device and a driving method are provided. The pixel circuit includes a data writing sub-circuit and a driving sub-circuit, and the data writing sub-circuit is connected to a scan signal terminal, a control signal terminal, a data signal terminal and a drive sub circuit. The data writing sub-circuit is used to output a data signal from the data sig…
- Who is the assignee on this patent?
- Chongqing Boe Optoelectronics Tech Co Ltd, Boe Technology Group Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G09G3/3241. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 09 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).