Heat sink and display device

By employing a heat dissipation plate in foldable phones that includes a heat absorption pool, capillary microchannels, and a liquid collection pool, and utilizing the circulating flow of ethylene glycol, propylene glycol, or fluorinated liquid to achieve efficient heat dissipation, the heat dissipation problem of foldable phones under high power consumption conditions is solved, the lifespan of display devices is extended, and thinner and lighter designs are supported.

CN117460210BActive Publication Date: 2026-07-21WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
Filing Date
2023-03-28
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing foldable screen phones have low heat dissipation efficiency under high power consumption, which reduces the stability and lifespan of the light-emitting materials in the screen display device. In addition, the high density of copper foil heat dissipation material is not conducive to the design of thin and light devices.

Method used

It adopts a heat dissipation plate, which includes a heat dissipation microcavity and a circulating heat dissipation working fluid. The heat dissipation microcavity is equipped with a heat absorption pool, capillary microchannels and liquid collection pool. It achieves efficient heat dissipation through capillary action and working fluid circulation. Ethylene glycol, propylene glycol or fluorinated liquid is used as the heat dissipation working fluid.

Benefits of technology

It achieves a highly efficient self-circulating heat dissipation system, which improves heat dissipation efficiency, ensures that the display panel can work in a low-temperature environment, extends the life of the display device, and supports the thinner and lighter design of foldable screens.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117460210B_ABST
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Abstract

The application discloses a heat dissipation plate and a display device, the heat dissipation plate comprises a heat dissipation plate body, a heat dissipation microcavity embedded in the inside of the heat dissipation plate body, and a heat dissipation working medium filled in the inside of the heat dissipation microcavity, wherein the heat dissipation microcavity comprises a heat absorption pool, a liquid collecting pool arranged at intervals with the heat absorption pool, and a capillary microchannel group communicated between the heat absorption pool and the liquid collecting pool, the capillary microchannel group comprises a plurality of capillary microchannels arranged at intervals, the plurality of capillary microchannels comprise a plurality of first capillary microchannels and a plurality of second capillary microchannels, the liquid inlet end of any first capillary microchannel is communicated with the heat absorption pool, and the liquid outlet end is communicated with the liquid collecting pool, the liquid inlet end of any second capillary microchannel is communicated with the liquid collecting pool, and the liquid outlet end is communicated with the heat absorption pool, and the heat dissipation plate constructs an effective self-circulation heat dissipation system, and can realize higher heat dissipation efficiency.
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