Light source driving circuit and display module

A light source driving circuit and driving circuit technology, applied in the field of projection display, can solve problems such as low energy utilization rate, and achieve the effects of ensuring coupling efficiency and improving optical power utilization efficiency

Active Publication Date: 2021-03-05
CHENGDU IDEALSEE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a light source drive circuit and a display module, which are used to solve the problem of energy utilization in order to improve the brightness of the projected image and directly increase the output power of the laser in the application of the optical fiber scanning display technology in the prior art. Low technical problems, providing a solution that can not only obtain high-power effective laser optical power output, but also improve optical power utilization efficiency at the same time

Method used

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  • Light source driving circuit and display module
  • Light source driving circuit and display module

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] In the embodiment of the present invention, the laser driver dedicated chip solution ISL58365 introduced by Intersil is selected as the laser driver solution in the optical fiber scanning display. Such as figure 1 As shown, ISL58365 is a dedicated light source driving solution, which has 4 independent current modulation drive ports inside, which can realize the RGGB drive mode and complete white light modulation. The official recommended usage is as follows:...

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Abstract

The invention discloses a light source driving circuit and a display module. The light source driving circuit comprises a red light driving circuit, a green light driving circuit and a blue light driving circuit; each driving circuit comprises a driving power supply, a driving chip and a plurality of lasers with the same color, wherein the driving chip comprises a plurality of current input ports,the plurality of lasers with the same color are connected in parallel; each current input port is connected with the cathode of one laser, and the anodes of the plurality of lasers are connected withthe driving power supply. In the application of an optical fiber scanning display technology in the prior art, in order to improve the brightness of a projected image and directly improve the outputpower of a laser, the energy utilization rate is low; the invention just aims to solve the above technical problem and provide a technical scheme capable of obtaining high-power effective laser optical power output and improving optical power utilization efficiency.

Description

technical field [0001] The invention relates to the field of projection display, in particular to a light source driving circuit and a display module. Background technique [0002] The imaging principle of fiber scanning display technology (fiber scanning display, FSD) is to drive the scanning fiber through the fiber scanner to move the predetermined two-dimensional scanning trajectory, and modulate the light output of the light source, that is, to modulate the image corresponding to each pixel of the image to be displayed. Then, the light corresponding to each pixel of the image to be displayed is projected onto the projection surface one by one through the scanning optical fiber, thereby forming a projection picture. [0003] Due to the characteristics of high brightness, high directivity, high monochromaticity and high coherence, lasers are often used as light sources for optical fiber scanning display technology. In some scenes that need to increase the output light pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G03B21/20
CPCG02B26/103G03B21/2033G03B21/2053Y02B20/40
Inventor 不公告发明人
Owner CHENGDU IDEALSEE TECH
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