Temperature control base for measuring semiconductor light-emitting device

A technology of light-emitting devices and semiconductors, which is applied in the direction of single semiconductor device testing, temperature control, and measuring devices. It can solve problems that affect injection, cannot be constant, and affect test accuracy, and achieve accurate test results, good sealing effects, and water vapor reduction. Effect

Inactive Publication Date: 2008-05-28
HANGZHOU ZHEJIANG UNIV SENSING INSTR
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AI-Extracted Technical Summary

Problems solved by technology

The base body without temperature control function cannot keep the junction temperature of the tested piece relatively constant, and the test results are not comparable; the base body with temperature control function generally does not h...
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Method used

Heat dissipation device comprises heat dissipation seat body 11-1, is located at the convection chamber 11-2 on heat dissipation seat body 11-1, and convection chamber 11-2 is laterally arranged in heat dissipation seat body 11-1, and heat dissipation seat body 11- The horizontal two ends of 1 are provided with cooling fan 5, makes cooling device form horizontal cooling mode, and cooling effect is good.
The heat dissipation device comprises a heat sink body 11-1, a convection chamber 11-2 located on the heat dissipation seat body 11-1, and a power pump 6 cooperating with the convection chamber 11-2, and gas can be passed in the convection chamber 11-2 Or liquid, the corresponding power pump is a hydraulic pump o...
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Abstract

The invention relates to a temperature controlling base for testing semi-conductive illuminant device, which is provided with temperature controlling function and avoids condensation of moisture. The invention comprises a temperature controlling device and a seal closure which is matched with the temperature controlling device, wherein testing specimens can be arranged into the seal closure and matched with the temperature controlling device. The distinguishing progresses of the invention are that the testing specimens is located in a comparative constant temperature status through an arrangement of the temperature controlling device, testing results are accurate, the testing specimens are separated form around circumstance through the arrangement of the seal closure, thereby effects of the around circumstance can be avoided, sealing effects of the seal closure is better through the arrangement of seal components, the arrangement of an extraction opening enables that a vacuum machine is connected with the seal closure through the extraction opening, air inside the seal closure can be extracted, vapor can be decreased, the vapor can be avoided to condense on the testing specimens.

Application Domain

Temperatue controlPhotometry +1

Technology Topic

EngineeringMoisture +3

Image

  • Temperature control base for measuring semiconductor light-emitting device

Examples

  • Experimental program(2)

Example Embodiment

[0020] Embodiment 1: The temperature control seat for measuring semiconductor light-emitting devices, as shown in Figure 1, it can be matched with the tested part 3 and the light measuring device 10. It includes a temperature control device and a sealing cover matched with the temperature control device 2. The test piece 3 can be placed in the sealing cover 2 to cooperate with the temperature control device.
[0021] The temperature control device includes a heat dissipation device, temperature measurement elements 1-3, a temperature control element 1-2 matched with the heat dissipation device, a thermostatic seat 1-4 matched with the temperature control element 1-2, a thermostatic seat 1-4 and a temperature control element The exposed part of 1-2 is covered with a heat-insulating layer 1-5, the heat-insulating layer 1-5 is provided with a placement opening for the tested piece 3, and the tested piece 3 can be installed on the thermostatic seat 1-4 through the placement opening. The signal collection terminal on the temperature measuring element 1-3 can be directly connected with the housing of the tested part 3 placed on the thermostatic base 1-4, or connected with the thermostatic base 1-4, and the signal output terminal can be electrically driven and measured The device 4 is connected.
[0022] The sealing cover 2 is an optically transparent hemispherical cavity, on which an air extraction port 2-3 is provided, and a vacuum pump 7 is connected to the air extraction port 2-3. The sealing cover 2 is also provided with an opening 2-1 that can be matched with the thermostatic seat 1-4, and an elastic sealing ring 8 is provided at their matching position to improve the sealing performance.
[0023] The heat dissipation device includes a heat dissipation base 11-1, a convection cavity 11-2 provided on the heat dissipation base 11-1, the convection cavity 11-2 is laterally arranged in the heat dissipation base 11-1, and the heat dissipation base 11-1 is laterally There are cooling fans 5 at both ends, so that the cooling device forms a lateral cooling mode, and the cooling effect is good.
[0024] During use, the thermostat keeps the temperature of the tested part 3 relatively constant, the sealing cover 2 closely cooperates with the thermostatic seat 1-4 to seal the tested part 3, and the vacuum machine 7 pairs the sealing cover through the air extraction port 2-3 2Pump the air, so as to reduce the concentration of water vapor in the surrounding environment of the test piece 3, and avoid the appearance of water vapor condensation.

Example Embodiment

[0025] Embodiment 2: The temperature control seat for measuring semiconductor light-emitting devices, as shown in Figure 2. On the temperature control seat, the sealing cover 2 is a photometric integrating sphere, and the opening 2-1 matched with the thermostat seat 1-4 It is located on the wall below the sphere and on the cut surface of the sphere, and the tested object 3 is located in the center of the opening 2-1. There is a test port 2-2 on the side wall of the sphere. A light transmission channel 9 is installed on the test port 2-2. The outer end of the light transmission channel 9 is connected to a light measuring device. The light measuring device can be with a detector or with light. Transmitter's photometric instrument 10.
[0026] The heat dissipation device includes a heat dissipation base 11-1, a convection cavity 11-2 arranged on the heat dissipation base 11-1, a power pump 6 matched with the convection cavity 11-2, and the convection cavity 11-2 can pass gas or liquid. The corresponding power pump is a hydraulic pump or a pneumatic pump (if gas is in the convection chamber, the power pump is a pneumatic pump, and if liquid is in the convection chamber, the power pump is a hydraulic pump), and the gas or liquid can be opposed to the heat sink 11-1 Perform a lateral convection movement, so that the heat dissipation device forms a lateral heat dissipation method, and the heat dissipation effect is good.
[0027] The rest of the structure is the same as in Example 1.
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Description & Claims & Application Information

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