OLED display screen high-temperature testing device

Abstract

The utility model belongs to the technical field of display screen testing devices, and discloses an OLED display screen high-temperature testing device which comprises a testing table, a testing device is arranged beside the testing table, the upper end face of the testing table is provided with at least two testing cavities, the bottom of each testing cavity is provided with a heating piece, and the heating pieces are arranged in the testing cavities. A heat conducting plate is detachably arranged on the upper end face of the heating piece, a first connecting part is fixed on at least one side of the heat conducting plate, a second connecting part is arranged on the upper end face of the test table and located on the side edge of the test cavity, and the first connecting part and the second connecting part are detachably connected. The heat conducting plate which is detachably connected is arranged, the heat conducting plate is convenient to place and detach, display screens of various specifications can be conveniently taken out of the testing cavity, specifically, when the heat insulation strip is placed in the groove, the iron block can be inserted into the positioning groove, the placing accuracy of the heat conducting plate can be effectively guaranteed, the iron block and the magnetic block can be attracted together, and the heat conducting plate is not prone to falling off. And the heat conducting plate is not easy to move upwards without external force so as not to shift.

Description

Technical Field

[0001] The utility model belongs to the technical field of display screen testing devices, and in particular relates to a high-temperature testing device for an OLED display screen. Background Art

[0002] As the name suggests, a display screen is a display tool. There are many types of display screens, among which OLED display screen is one of them. After production, OLED display screens often need to undergo high-temperature testing to test the use of the display screen in a high-temperature environment.

[0003] In the existing high-temperature test of OLED display screens, the OLED display screens are mostly quickly heated up first, and then tested with an optical detector. In a high-temperature aging test device for a display screen module disclosed in Application No. 202020271994.1, it is mentioned that a heat conducting plate is installed on the top of a heat insulating plate through a connecting block, a heating plate is arranged between the heat insulating plate and the heat conducting plate, and a loading slot is arranged on the heat conducting plate, and the loading slot is used to place the OLED display screen to be tested by heating. The loading slot in the disclosed test device is of fixed size, and the heat conducting plate is fixed to the upper end surface of the heating plate. When a smaller display screen is placed in the loading slot, the display screen can be quickly taken out from the gap around the loading slot. However, when a larger display screen is placed in the loading slot for testing, the gaps around the loading slot are smaller, and it is more time-consuming and laborious to take out the display screen. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature testing device for an OLED display screen, so as to solve the problem in the above-mentioned background technology that the size of the existing loading slot is fixed, and when a larger display screen is placed in the loading slot for testing, the gaps around the loading slot are small, which makes it time-consuming and laborious to take out the display screen.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature testing device for an OLED display screen, comprising a test bench, a test device is provided on the side of the test bench, and at least two test cavities are provided on the upper end surface of the test bench, a heating plate is installed at the bottom of each test cavity, a heat conducting plate is detachably provided on the upper end surface of the heating plate, a first connecting portion is fixed on at least one side of the heat conducting plate, a second connecting portion is provided on the upper end surface of the test bench and located on the side of the test cavity, and the first connecting portion and the second connecting portion are detachably connected.

[0006] Preferably, the first connection portion comprises a heat-insulating strip, the second connection portion comprises a groove, and the heat-insulating strip is inserted and matched in the groove.

[0007] Preferably, the first connecting part also includes an iron block, which is fixed to the lower end surface of the thermal insulation strip, and the second connecting part also includes a positioning groove and a magnetic block, the positioning groove is opened at the bottom of the groove, the magnetic block is fixed to the bottom of the positioning groove, and the iron block is inserted and matched with the positioning groove.

[0008] Preferably, the outer end of the thermal insulation strip protrudes outward from the side opening of the groove.

[0009] Preferably, a heat insulation plate is provided inside the test cavity and below the heating plate.

[0010] Preferably, the testing device comprises a power supply control unit and an optical detector, wherein the power supply control unit is used to supply power to the display screen and control the display screen display.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model is provided with a detachable heat conducting plate, which is convenient for its placement and removal, that is, it is convenient for display screens of various specifications to be taken out of the test chamber. Specifically, when placing the heat conducting plate, the heat insulating strip is placed in the groove so that the heat conducting plate fits the upper end surface of the heating plate. The installation is convenient and quick. The outwardly protruding heat insulating strip is convenient for the staff to apply force with their hands to lift it up.

[0013] (2) When the heat insulating strip is placed in the groove, the iron block can be inserted into the positioning groove, which can effectively ensure the accuracy of the placement of the heat conducting plate. The iron block can be adsorbed together with the magnetic block in the positioning groove, thereby improving the stability of the placement of the heat conducting plate, and it is not easy to move up and shift without the action of external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the test bench of the utility model;

[0016] Figure 3 for Figure 2 A magnified view of part A in FIG.

[0017] In the figure: 1. test bench; 2. test chamber; 3. power supply control unit; 4. optical detector; 5. heat conduction plate; 6. heat insulation strip; 7. groove; 8. heating plate; 9. heat insulation board; 10. iron block; 11. positioning groove; 12. magnetic block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Figure 1 It is a top view of the utility model. As shown in the figure, the high-temperature test device for OLED display includes a test bench 1. A mounting plate is installed on the side of the test bench 1. A test device is arranged on the mounting plate. The test device includes a power supply control unit 3 and an optical detector 4. The power supply control unit 3 includes a controller and a power supply for supplying power to the display screen and controlling the display screen display. The optical detector 4 is an ultra-low brightness spectroradiometer for detecting the brightness, chromaticity, color temperature, contrast, etc. of the display screen. The power supply control unit 3 and the optical detector 4 are both existing mature products and are not described in detail herein. At least two test cavities 2 are arranged on the upper end face of the test bench 1. Two or more test cavities 2 can test two or more display screens at the same time, thereby improving efficiency. Each test cavity 2 is installed at the bottom A heating plate 8 is provided, and the heating plate 8 is an electric heating plate. A heat insulating plate 9 is provided inside the test cavity 2 and below the heating plate 8. The heat insulating plate 9 can block the heat from extending toward the table surface of the test bench 1 to reduce heat loss. A heat conducting plate 5 is detachably provided on the upper end surface of the heating plate 8. The OLED display screen to be heated is placed on the heat conducting plate 5. After the heating plate 8 is started to heat up, the heat conducting plate 5 can be used to quickly heat up the OLED display screen. A temperature sensor can be provided on the side of the test cavity 2 to detect the temperature. A first connecting portion is fixed to at least one side of the heat conducting plate 5. A second connecting portion is provided on the upper end surface of the test bench 1 and located on the side of the test cavity 2. The first connecting portion and the second connecting portion are detachably connected. The detachably connected heat conducting plate 5 is convenient for placement and removal, that is, it is convenient for display screens of various specifications to be taken out of the test cavity 2.

[0020] In a specific embodiment of the present invention, refer to Figure 1 As shown, the first connection part includes a heat insulation strip 6 , and the second connection part includes a groove 7 . The heat insulation strip 6 is inserted and matched in the groove 7 , and the outer end of the heat insulation strip 6 protrudes outward from the side opening of the groove 7 .

[0021] As mentioned above, when placing the heat conducting plate 5, the heat insulating strip 6 is placed in the groove 7 so that the heat conducting plate 5 fits the upper end surface of the heating plate 8. The installation is convenient and quick. The outwardly protruding heat insulating strip 6 is convenient for the staff to apply force with their hands to lift it up.

[0022] Secondly, in a specific embodiment of the present invention, refer to Figure 2-Figure 3As shown, the first connecting part also includes an iron block 10, which is fixed to the lower end surface of the thermal insulation strip 6, and the second connecting part also includes a positioning groove 11 and a magnetic block 12. The positioning groove 11 is opened at the bottom of the groove 7, and the magnetic block 12 is fixed to the bottom of the positioning groove 11. The iron block 10 is inserted and matched with the positioning groove 11.

[0023] Through the above technical solution:

[0024] When the insulation strip 6 is placed in the groove 7, the iron block 10 can be inserted into the positioning groove 11, which can effectively ensure the accuracy of the placement of the heat conducting plate 5, and the iron block 10 can be adsorbed together with the magnetic block 12 in the positioning groove 11, thereby improving the stability of the placement of the heat conducting plate 5, and it is not easy to move up and shift without the action of external force.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature testing device for an OLED display screen, characterized in that: The invention comprises a test bench (1), a test device is arranged on the side of the test bench (1), and at least two test cavities (2) are arranged on the upper end surface of the test bench (1), a heating plate (8) is installed at the bottom of each test cavity (2), a heat conducting plate (5) is detachably arranged on the upper end surface of the heating plate (8), a first connecting portion is fixed on at least one side of the heat conducting plate (5), a second connecting portion is arranged on the upper end surface of the test bench (1) and located on the side of the test cavity (2), and the first connecting portion and the second connecting portion are detachably connected.

2. The high temperature testing device for an OLED display screen according to claim 1, characterized in that: The first connection portion comprises a heat insulation strip (6), the second connection portion comprises a groove (7), and the heat insulation strip (6) is inserted and matched in the groove (7).

3. The high temperature testing device for an OLED display screen according to claim 2, characterized in that: The first connecting part also includes an iron block (10), and the iron block (10) is fixed to the lower end surface of the heat insulation strip (6). The second connecting part also includes a positioning groove (11) and a magnetic block (12). The positioning groove (11) is opened at the bottom of the groove (7), and the magnetic block (12) is fixed to the bottom of the positioning groove (11). The iron block (10) is inserted and matched with the positioning groove (11).

4. The high temperature testing device for an OLED display screen according to claim 2, characterized in that: The outer end of the heat insulation strip (6) protrudes outward from the side opening of the groove (7).

5. The high temperature testing device for an OLED display screen according to claim 1, characterized in that: A heat insulation board (9) is provided inside the test cavity (2) and below the heating plate (8).

6. The high temperature testing device for an OLED display screen according to claim 1, characterized in that: The testing device comprises a power supply control unit (3) and an optical detector (4); the power supply control unit (3) is used to supply power to the display screen and control the display of the display screen.

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