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A lamp and method for eliminating low gray jitter of LED display

A technology of LED lamps and display modules, applied in the direction of electrical components, etc., can solve the problems of increasing the cost of lamps and other issues

Active Publication Date: 2022-04-15
深圳智芯半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a lamp and method for solving the jitter of LED in the low gray segment at the LED lamp end, without increasing the cost of the lamp, and without causing the problem of smearing, and eliminating the display of the LED low gray segment Jitter problem

Method used

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  • A lamp and method for eliminating low gray jitter of LED display
  • A lamp and method for eliminating low gray jitter of LED display
  • A lamp and method for eliminating low gray jitter of LED display

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Embodiment Construction

[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0038] like Figure 1 to Figure 5 As shown, a specific embodiment of the present invention, a lamp and method for eliminating low gray jitter of LED display, includes an LED lamp unit, the LED lamp unit is composed of a power module, a decoding module and a display module, and the power module is used for the decoding module and the display module. Module power supply, decoding module includes decoding chip U1, capacitor C1 and resistors R1, R2, R3, decoding chip U1 includes data frame interval measurement unit, data frame decoding unit, PWM refresh frequency configuration unit, PWM duty c...

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Abstract

The invention relates to a lamp and method for eliminating low gray jitter of LED display. The LED lamp unit includes a power supply module, a decoding module and a display module. The decoding module receives data sent by a controller and generates a PWM control signal, and the PWM control signal output is duty-free. Ratio, duty cycle Switch back and forth between the two PWM outputs of the previous frame data and the current data to smooth the transition between the two levels of gray scale, eliminating the problem of LED display low gray jitter, the solution is on the LED lamps Implementation, the controller does not need to do special processing, it can be compatible with general controllers, and solves the jitter problem of high-power LED low-gray gradients without increasing the cost, and solves the smear problem caused by the common data frame insertion method , improved display quality, and increased reliability.

Description

technical field [0001] The invention relates to the technical field of LED lighting and display, and more particularly, to a lamp and a method for eliminating low gray jitter of LED display. Background technique [0002] Existing LEDs have been widely used in stage lighting, urban landscape lighting and other fields due to their long service life, energy saving, environmental protection and pure color. Among them, stage lights and flood lights in the field of landscape lighting all need to use high-power LEDs to meet the requirements of high brightness of lamps. The brightness of the lamp is improved, and the brightness difference between two adjacent grayscales is correspondingly larger. Especially in the low gray segment, even if the brightness of the gamma-corrected 65536-level gray-scale lamp itself is small, the same brightness change is easier to be captured by the human eye, which causes the human eye to feel the gradual display of the lamp in the low gray segment. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/325
Inventor 谢靖方曙吴东生
Owner 深圳智芯半导体科技有限公司
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