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A volume-driven micro-display pixel circuit

A driving structure and pixel circuit technology, which is applied in the field of micro-display, can solve the problems of OLEDoS micro-display technology grayscale and precision limitation, and achieve the effect of high grayscale, high-quality display and widening input range

Active Publication Date: 2020-06-09
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a micro-display pixel circuit with a volume-driven structure, which solves the problem that the grayscale and precision of the existing OLEDoS micro-display technology are limited by the input range of the data voltage

Method used

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  • A volume-driven micro-display pixel circuit
  • A volume-driven micro-display pixel circuit
  • A volume-driven micro-display pixel circuit

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0030] figure 1 A micro-display pixel circuit with volume driving structure provided for the embodiment of the present application, including a switching stage, an intermediate stage, and a light emitting stage; the switching stage includes a switching transistor M1; the intermediate stage includes a first regulating transistor M2, a second regulating...

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Abstract

The invention discloses a body driving structure micro display pixel circuit and solves a problem that the input data voltage range of a pixel circuit in an OLEDoS micro display is small in the priorart. The pixel circuit comprises a switch level, an intermediate level and a lighting level, wherein the switch level is connected with the intermediate level, the intermediate level is connected withthe lighting level, the switch level comprises a switch transistor, the intermediate level comprises a first adjusting transistor, a second adjusting transistor and a storage capacitor, the lightinglevel comprises a driving transistor and a light emitting diode, the voltage is transmitted by the switch level to the intermediate level in the circuit work process and is then adjusted by the intermediate level, after the width range is enhanced, the voltage is transmitted to the lighting level. The pixel circuit is advantaged in that the input range of the data voltage can be broadened, and thereby the higher gray scale level and high-precision and high-quality display can be realized.

Description

technical field [0001] The present application relates to the field of micro-display technology, and in particular to a pixel circuit with a bulk driving structure. Background technique [0002] In recent years, the application scenarios of micro-displays have been increasing, such as smart glasses, virtual reality glasses, etc., which has also promoted the further development of micro-display technology. As one of the important solutions in microdisplay, OLEDoS technology has the advantages of organic light-emitting diode (OLED) self-luminescence, fast response speed, simple manufacturing process, mature silicon process technology and high reliability, and has broad application prospects. Products that apply OLEDoS technology to military head-mounted display devices and virtual reality display fields have appeared abroad, and the corresponding research and industrialization in China have been relatively slow. In the OLEDoS micro-display, the pixel circuit directly controls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0271
Inventor 李洪革卢汇源
Owner BEIHANG UNIV
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