LED display system and driving circuit of array type LED display panel of LED display system

A technology of display panel and drive circuit, applied in static indicators, instruments, etc., can solve the problems affecting the appearance and use experience of products, and achieve the effect of improving the appearance and use experience

Inactive Publication Date: 2020-01-21
WUXI ETEK MICROELECTRONICS
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  • Abstract
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  • Application Information

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Problems solved by technology

However, in actual use, as the number of lit LEDs changes and the power supply voltage changes, the current of the lit LEDs will also change, especially on high-end products, which will directly affect the appearance and use experience of the product

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  • LED display system and driving circuit of array type LED display panel of LED display system
  • LED display system and driving circuit of array type LED display panel of LED display system
  • LED display system and driving circuit of array type LED display panel of LED display system

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly.

[0024] The invention adopts the constant current technology to drive the array type LED display panel to replace the traditional switch type driving structure. Please refe...

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Abstract

The invention provides an LED display system and a drive circuit of an array LED display panel thereof, and the drive circuit comprises a control logic module which outputs a reference current controlsignal through a first output end, outputs a constant current control signal through a second output end, and outputs a drive control signal through a third output end based on the received data; a reference current source generating a reference current based on the reference current control signal; a constant current output module, wherein n constant current sources of the constant current output module are respectively and correspondingly connected with N row lines through N constant current ports, the constant current sources generate one path of constant current based on reference currentgenerated by a reference current source, and the constant current output module controls one or more corresponding constant current sources to generate one or more paths of constant current through one or more corresponding constant current ports based on a constant current control signal; a drive output module, wherein m driving switches of the driving output module are correspondingly connectedwith the M column lines through M driving ports respectively. Compared with the prior art, the array type LED display panel can obtain a balanced display effect, and the appearance use feeling of a product is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of LED (Liquid Emitting Diode) display, in particular to an LED display system and a driving circuit for an array type LED display panel. 【Background technique】 [0002] The current white goods and small home appliances basically need to use LED panel driver chips (or driver circuits). Existing driver chips also use array drive, that is, an array (also called segment and bit) is composed of row tubes and column tubes. convenient. However, in actual use, as the number of lit LEDs changes and the power supply voltage changes, the current of the lit LEDs will also change, especially in high-end products, which will directly affect the appearance and use experience of the product. [0003] Therefore, it is necessary to propose an improved technical solution to overcome the above problems. 【Content of invention】 [0004] One of the objects of the present invention is to provide an LED display system and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 史良俊毛成烈孙旭涛陈莹
Owner WUXI ETEK MICROELECTRONICS
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