led backlight driving test device
A backlight driving and testing device technology, which is applied in the field of LED detection, can solve the problems of easy misadjustment or missed adjustment, heavy repetitive workload of debugging, and inconvenient operation.
Active Publication Date: 2018-12-21
TCL DISPLAY TECH HUIZHOU
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Problems solved by technology
Due to the need to manually adjust the driving current, the repetitive workload of debugging is large, and it is easy to misadjust or miss adjustment. The traditional LED backlight driving test device has the disadvantage of inconvenient operation.
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[0010] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0011] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to t...
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The invention discloses a LED backlight driving testing apparatus which includes a control module, a power supply module, an input feedback module, an output feedback module, a LED input end and a LED output end. The control module, based on the received LED backlight driving parameters, transmits a corresponding control signal to the power supply module through a signal control end, and controls the power supply module to transmit a corresponding output signal through an output end to the LED input end by inputting to the input feedback module so as to provide power supply to a LED line to be tested. The control module receives an input feedback signal transmitted by the input feedback module and transmits a corresponding input PWM signal to the input feedback module, and receives an output feedback signal transmitted by the output feedback module and transmits a corresponding output PWM signal to the output feedback module, and controls the input feedback module and the output feedback module to adjust corresponding output signals. According to the invention, the control module is used to control the power supply of the power supply module in accordance with the LED backlight driving parameters, and real-time monitoring and adjusting is conducted based on the acquired feedback signals, which obviates artificial adjustment and interruption, and is more smart, reliable and much easier to operate.
Description
technical field [0001] The invention relates to the technical field of LED detection, in particular to an LED backlight driving test device. Background technique [0002] LED (Light Emitting Diode, light emitting diode) is a diode made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and the like. LEDs are used as indicator lights in circuits and instruments, or to form text or digital displays. Gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and gallium nitride diodes emit blue light. LEDs are widely used in backlight components of display devices, and if a fault occurs, the display effect will be directly affected, so it is necessary to perform a driving test. [0003] The traditional LED backlight driving test device uses a dedicated LED constant current driving chip, mainly including two parallel driving chips for testing parallel LED circuits, and one serial dr...
Claims
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IPC IPC(8): G01R31/26
Inventor 吴志谋
Owner TCL DISPLAY TECH HUIZHOU