Selection and output circuit, and display device

Patent metadata

Field	Value
Publication number	US-10586484-B2
Application number	US-201816023921-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Aug 22, 2017
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

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.

First claim

The invention claimed is:

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 .

Assignees

• Boe Technology Group Co Ltd

Inventors

• Liu Jianfu
• Wang Shihao

Classifications

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title

• G09G2310/0291

  Details of output amplifiers or buffers arranged for use in a driving circuit · CPC title

• G09G3/3696

  Generation of voltages supplied to electrode drivers · CPC title

• G09G2310/0267

  Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays · CPC title

• G09G3/20 Primary

  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 title