Voltage output system and liquid crystal display device
A voltage output and output voltage technology, applied in the input/output process of data processing, static indicators, electrical digital data processing, etc., can solve the problems of complex experimental operations, easy oxidation of solder contact points, and inability to re-solder, etc. To achieve the effect of simplifying experimental operation, reducing product cost and low cost
Inactive Publication Date: 2018-11-16
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
However, in order to save costs in the prior art, an assembled circuit board is often designed that combines the X board and the C board. The assembled circuit board is directly bound to the LCD panel through the chip-on-chip film, and the voltage output system is designed in On the circuit board, at this time, it is necessary to repeatedly disassemble and assemble the zero-ohm resistor of the voltage output system during the reliability test to realize the output voltage of different voltage values to the LCD panel, which not only makes the experimental operation complicated, but also requires repeated disassembly. In the middle, the solder contact point of the voltage output system is easily oxidized and cannot be soldered again
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[0032] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0033] see image 3 , the present invention provides a voltage output system, including a first circuit board body 11, a second circuit board body 12, a first contact 21, a second contact 22, a third contact on the first circuit board body 11 Point 31, the fourth contact 32 and the seventh contact 25, the fifth contact 23 and the sixth contact 24 provided on the second circuit board body 12, the first circuit board provided in the first circuit board body 11 The wire 41 and the second wire 42 , the third wire 43 , the fourth wire 44 and the variable resistor 50 are disposed in the second circuit board body 12 .
[0034] The third contact 31 is electrically connected to the fifth contact 23 , and the fourth contact 32 is electrically connected...
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The invention provides a voltage output system and a liquid crystal display device. The voltage output system is provided with a variable resistor. An input voltage transmitted by a level conversion unit is inputted into one end of the variable resistor through a contact and a wire, and the other end of the variable resistor is electrically connected with a liquid crystal panel through a contact and a wire to output an output voltage. After the voltage output system is disposed on an assembly circuit board of the liquid crystal display device, the output voltage of the voltage output system can be enabled to be a preset required voltage through the adjustment of the resistance of the variable resistor during the testing of the liquid crystal display device. The system can provide differentoutput voltages for the liquid crystal panel conveniently and quickly, effectively simplifies the testing operation of the liquid crystal display device, and reduces the product cost.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a voltage output system and a liquid crystal display device. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many small vertical and horizontal wires between the two glass substrates. The direction of the liquid crystal mole...
Claims
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IPC IPC(8): G09G3/36
CPCG09G3/3696G02F1/13452G09G3/006G09G2310/0289G06F1/16G06F3/1423H02M7/003
Inventor 陈帅
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD