LED display control circuit
A display control and circuit technology, applied to static indicators, instruments, etc., can solve the problems of low efficiency and inconvenient detection methods
Inactive Publication Date: 2019-08-30
深圳市艾希亿智能科技有限公司
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Problems solved by technology
During the use of light-emitting diodes, the working temperature will be too high and the light-emitting diodes will be damaged. However, since the display screen is a surface light source formed by multiple point light sources emitting light at the same time, one of the light-emitting diodes is damaged and it is not easy to be found. It is necessary to know the display screen. When determining the number of damaged LEDs in the display, the display screen must be disassembled manually, and then each LED in the display screen must be detected to obtain the specific value of the number of damaged LEDs. This detection method is very inefficient and inconvenient
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[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0028] see figure 1 , which is a structural block diagram of the LED display control circuit of the present invention. The present invention provides a LED display control circuit, including an LED display unit 11, a puls...
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The invention discloses an LED display control circuit. The LED display control circuit comprises an LED display unit, a pulse dimming unit, a current detection unit and an insulated gate field effecttransistor M1, the grid electrode of the insulated gate field effect transistor M1 is connected with the pulse dimming unit; the source electrode of the insulated gate field effect transistor M1 is connected with the current detection unit; and the drain electrode of the insulated gate field effect transistor M1 is connected with the LED display circuit. According to the LED display control circuit provided by the invention, the pulse dimming unit adjusts the brightness of the LED display unit, and the current detection unit detects the current of the LED display unit. Compared with the priorart, the LED display control circuit is provided with the current detection unit which can detect the damage number of the light emitting diodes, the arranged pulse dimming unit controls the currentin the LED display unit through the pulse width modulation signal, and then the brightness of the light emitting diodes in the LED display unit is adjusted.
Description
[0001] 【Technical field】 [0002] The invention belongs to the field of electronic circuits, in particular to an LED display control circuit technology. [0003] 【Background technique】 [0004] Light Emitting Diode (LED) is one of the common light sources. It is more and more widely used due to its advantages of low power consumption, long service life, and no ultraviolet radiation. It is composed of multiple light emitting diodes arranged in an orderly manner. The use of display screens is also increasing. During the use of light-emitting diodes, the working temperature will be too high and the light-emitting diodes will be damaged. However, since the display screen is a surface light source formed by multiple point light sources emitting light at the same time, one of the light-emitting diodes is damaged and it is not easy to be found. It is necessary to know the display screen. When determining the number of damaged LEDs in the display, the display screen must be disassembl...
Claims
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Login to View More IPC IPC(8): G09G3/32G09G3/00
CPCG09G3/006G09G3/32
Inventor 国岩
Owner 深圳市艾希亿智能科技有限公司