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A drive circuit for a display

A driving circuit and display technology, applied to static indicators, instruments, etc., can solve problems such as short charging time, high data transmission broadband requirements, and inability to support high resolution, etc., to achieve long charging time, improve display effect, and overcome brightness uneven effect

Active Publication Date: 2022-04-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a display driving circuit, which adopts Micro-LED display technology, which can not only eliminate color shift, but also overcome the shortcomings of conventional PWM driving methods, so as to solve the existing display driving circuit, using Micro-LED Display technology, when using the PWM drive circuit to solve the color shift problem of Micro-LED, there are technical problems such as short charging time, high bandwidth requirements for data transmission and inability to support high resolution

Method used

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  • A drive circuit for a display
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Embodiment Construction

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the a...

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Abstract

The present application discloses a driving circuit of a display, including an input unit, a control unit coupled to the input unit, and a light emitting unit coupled to the control unit, the control unit is used to drive the light emitting unit to emit light; wherein, The control unit includes a mutually independent PWM control unit and a PAM control unit, the PWM control unit is used to control the light-emitting time of the light-emitting unit, and the PAM control unit is used to control the magnitude of the driving current in the light-emitting unit. In the embodiment of the present application, the independent PWM control unit and the PAM control unit simultaneously control the light-emitting unit to drive light emission, while solving the problem of PAM driving color shift, and at the same time overcome the brightness unevenness caused by the TFT threshold voltage, so that the display takes a long time to charge, The data bandwidth requirements are general and high resolution can be supported, which further improves the display effect of the display.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display driving circuit. Background technique [0002] At present, Micro-LED is a new generation of display technology with self-luminous display characteristics. Compared with the existing Organic Light-Emitting Diode (OLED) technology, Micro-LED display device has higher brightness. , better luminous efficiency and lower power consumption. According to the unique voltage and current characteristics of Micro-LED, the current Micro-LED lighting basically adopts a constant current driving method. [0003] Under different current densities of the Micro-LED, the luminescence wave will shift, that is, the conventional PAM drive circuit (Pulse Amplitude Modulation, pulse amplitude modulation drive circuit, used to control the amplitude drive mode of the drive current of the Micro-LED, through The size of the current controls the brightness), which will cause the color s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0233G09G2320/064G09G2310/08G09G3/2014G09G3/2011G09G3/2081G09G2300/0426G09G2300/0852G09G2320/0242G09G2360/141
Inventor 杨波梁鹏飞
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD