Selection and output circuit, and display device

• US 10,586,484 B2
• Filed: 06/29/2018
• Issued: 03/10/2020
• 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
• Primary Examiner(s): Eurice, Michael J
• Application Number:
  US16/023,921
• Publication Number:
  US 20190066570A1
• Time in Patent Office: 620 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 comprises a first switch transistor and a first resistor, wherein

the first switch 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 a first node, and the other terminal connected with the second input terminal,

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

wherein the first control signal is from the reference signal terminal, the second control signal is from the second input terminal;

the first control signal and the second control signal are inverted signals;

the second control sub-circuit comprising 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,

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 via the NOT gate, 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 via the NOT gate;

the first output sub-circuit comprising 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,

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 comprising a third switch transistor,

wherein the third switch transistor has a gate connected with the output terminal of the NOT gate of the second control sub-circuit, a first electrode connected with the second input terminal, and a second electrode connected with the output terminal,

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,

the selection and output circuit, further comprising a first protection sub-circuit and a second protection sub-circuit, 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,

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

the second protection sub-circuit comprising 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,

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

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