Vehicle mounted thin film transistor LCD and driving method thereof

A technology of liquid crystal display and thin film transistor, which is applied in the field of vehicle-mounted LCD TV display, to achieve the effect of improving image quality, simplifying the driving circuit, and reducing heat generation

Inactive Publication Date: 2004-08-18
刘国林
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The vehicle-mounted thin film transistor liquid crystal display and the driving method described in the present invention can solve the problem of the drive circuit after simplifying the display screen, so as to greatly reduce the heating value of the vehicle-mounted TV display and improve the image quality; at the same time, it can overcome radiation interference and effective Conducive to the ultra-thin design of the display

Method used

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  • Vehicle mounted thin film transistor LCD and driving method thereof
  • Vehicle mounted thin film transistor LCD and driving method thereof
  • Vehicle mounted thin film transistor LCD and driving method thereof

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Embodiment Construction

[0015] The vehicle-mounted TFT liquid crystal display of the present invention is mainly composed of a display screen and an interface box. This device is fixed on the corresponding position in the car through the standing bracket used when installing in the car, and the headrest mounting frame when installing the headrest type.

[0016] The whole driving circuit is composed of the following parts: the signal processing circuit in the interface box and the signal processing circuit at the rear of the display screen. The signal processing circuit in the interface box will receive various video signals, including composite video (Composite Video), S-Video Ycrcb RGB signal, and computer signal. After AD conversion processing, the data will be compressed and transmitted to the transmission cable. . The overall circuit schematic diagram of the interface box can be seen figure 1 , wherein the computer signal input becomes a 24-bit RGB data stream through the AD conversion link, an...

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Abstract

The invention discloses a vehicle-carrying TFT LCD and its driving method, wherein the drive circuit of the display composes an interface box signal processing circuit, a display screen signal processing circuit and transmission cables, An A/D conversion and data compression processing circuit in the interface box signal processing circuit accomplishes the computer VGA or video signal processing and conversion using the mode of voltage difference signal through the transmission cable, the signal is then transmitted to the display screen signal processing circuit for signal restoring through decompression, format conversion, sequence signal formation circuit and DA conversion circuit, thus obtaining the analog data stream needed by the liquid crystal display screen and realizing screen display function.

Description

technical field [0001] The invention relates to a vehicle-mounted liquid crystal television display. Background technique [0002] At present, various vehicle-mounted thin-film transistor (TFT) liquid crystal displays are mainly composed of a display screen and a driving circuit. The drive circuit directly performs PAL or NTSC decoding processing on the received VIDEO signal to generate an RGB analog quantity, and then amplifies the analog quantity to achieve the required amplitude of the screen, and finally sends the processed signal to the screen. screen for image display. Since the driving circuit adopts an analog video signal processing mode, the whole circuit has a one-piece structure and cannot be divided into two parts, so that all components of the driving circuit are arranged behind the display screen. The above-mentioned structural forms have disadvantages such as easy radiation, internal interference, heat generation, and large thickness of the display device, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 刘国林
Owner 刘国林
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