SELECTION AND OUTPUT CIRCUIT, AND DISPLAY DEVICE

• US 20190066570A1
• Filed: 06/29/2018
• Published: 02/28/2019
• Est. Priority Date: 08/22/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: LIU, Jianfu, WANG, Shihao
• Granted Patent: US 10,586,484 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0286 Details of a shift registers arranged for use in a driving circuit
• CPC Class Codes: G09G 2310/0291 Details of output amplifiers or buffers arranged for use in a driving circuit
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/2092 Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

The present disclosure discloses a selection and output circuit, and a display device, and the selection and output circuit includes: a first control sub-circuit, a second control sub-circuit, a first output sub-circuit, and a second output sub-circuit, where the first control sub-circuit, the second control sub-circuit, the first output sub-circuit, and the second output sub-circuit are arranged so that the first output sub-circuit and the second output sub-circuit are controlled by the first control sub-circuit and the second control sub-circuit to operate in such a way that only one of the sub-circuits outputs a signal, and the other sub-circuit outputs no signal.

Claims

1. A selection and output circuit, comprising:

a first control sub-circuit, a second control sub-circuit, a first output sub-circuit, a second output sub-circuit, a first input terminal, a second input terminal, a reference signal terminal, a control terminal, and an output terminal, wherein;

the first control sub-circuit is configured to provide a first node with a first control signal or a second control signal under the control of the control terminal;

the second control sub-circuit is configured to provide the second output sub-circuit with a signal of the second input terminal when the signal of the first node is the first control signal, and to provide the second output sub-circuit with a signal of the reference signal terminal when the signal of the first node is the second control signal;

the first output sub-circuit is configured to provide the output terminal with a signal of the first input terminal when the signal of the first node is the first control signal; and

the second output sub-circuit is configured to provide the output terminal with the signal of the second input terminal when the second control sub-circuit provides the second output sub-circuit with the signal of the reference signal terminal.

2. The selection and output circuit according to claim 1, wherein the first control sub-circuit comprises a first switch transistor and a first resistor, wherein:

the first switch transistor has a gate connected with the control terminal, a first electrode connected with the reference signal terminal, and a second electrode connected with the first node; and

the first resistor has one terminal connected with the first node, and the other terminal connected with the second input terminal.

3. The selection and output circuit according to claim 1, wherein the second control sub-circuit comprises a NOT gate, wherein:

the NOT gate has an input terminal connected with the first node, a first power supply terminal connected with the reference signal terminal, a second power supply terminal connected with the second input terminal, and an output terminal connected with the second output terminal.

4. The selection and output circuit according to claim 1, wherein the first output terminal comprises a second switch transistor, wherein the second switch transistor has a gate connected with the first node, a first electrode connected with the first input terminal, and a second electrode connected with the output terminal.

5. The selection and output circuit according to claim 1, wherein the second output sub-circuit comprises a third switch transistor, wherein:

the third switch transistor has a gate connected with the second control sub-circuit, a first electrode connected with the second input terminal, and a second electrode connected with the output terminal.

6. The selection and output circuit according to claim 1, wherein the selection and output circuit further comprises a first protection sub-circuit, wherein:

the first protection sub-circuit is configured to provide the output terminal with the signal output by the first output sub-circuit.

7. The selection and output circuit according to claim 6, wherein the first protection sub-circuit comprises a first diode, wherein:

the first diode has an input terminal connected with the first output sub-circuit, and an output terminal connected with the output terminal.

8. The selection and output circuit according to claim 1, wherein the selection and output circuit further comprises a second protection sub-circuit, wherein:

the second protection sub-circuit is configured to provide the output terminal with the signal output by the second output sub-circuit.

9. The selection and output circuit according to claim 8, wherein the second protection sub-circuit comprises a second diode, wherein:

the second diode has an input terminal connected with the second output sub-circuit, and an output terminal connected with the output terminal.

10. A display device, comprising the selection and output circuit according to claim 1.

11. The display device according to claim 10, wherein the first control sub-circuit comprises a first switch transistor and a first resistor, wherein:

the first switch transistor has a gate connected with the control terminal, a first electrode connected with the reference signal terminal, and a second electrode connected with the first node; and

the first resistor has one terminal connected with the first node, and the other terminal connected with the second input terminal.

12. The display device according to claim 10, wherein the second control sub-circuit comprises a NOT gate, wherein:

the NOT gate has an input terminal connected with the first node, a first power supply terminal connected with the reference signal terminal, a second power supply terminal connected with the second input terminal, and an output terminal connected with the second output terminal.

13. The display device according to claim 10, wherein the first output terminal comprises a second switch transistor, wherein the second switch transistor has a gate connected with the first node, a first electrode connected with the first input terminal, and a second electrode connected with the output terminal.

14. The display device according to claim 10, wherein the second output sub-circuit comprises a third switch transistor, wherein:

the third switch transistor has a gate connected with the second control sub-circuit, a first electrode connected with the second input terminal, and a second electrode connected with the output terminal.

15. The display device according to claim 10, wherein the selection and output circuit further comprises a first protection sub-circuit, wherein:

the first protection sub-circuit is configured to provide the output terminal with the signal output by the first output sub-circuit.

16. The display device according to claim 15, wherein the first protection sub-circuit comprises a first diode, wherein:

the first diode has an input terminal connected with the first output sub-circuit, and an output terminal connected with the output terminal.

17. The display device according to claim 10, wherein the selection and output circuit further comprises a second protection sub-circuit, wherein:

the second protection sub-circuit is configured to provide the output terminal with the signal output by the second output sub-circuit.

18. The display device according to claim 17, wherein the second protection sub-circuit comprises a second diode, wherein:

the second diode has an input terminal connected with the second output sub-circuit, and an output terminal connected with the output terminal.