CN201813468U - Video unit and core board and video processing chip applied to video unit - Google Patents

Abstract

This invention discloses a video device, a core board for the video device, and a video processing chip. The video device includes a core board, a display panel, and source and gate driving circuits. A main chip for video processing is mounted on the core board, and the main chip integrates a timing control circuit that controls the operating sequence of the source and gate driving circuits. The source and gate driving circuits receive video signals from the main chip and convert them into display driving signals for image display on the display panel. The video device, core board, and video processing chip described in this invention can save on T-Con board and wiring costs, and avoid interference and distortion of high-frequency LVDS signals during output, ensuring optimal picture quality.

Description

Video device, movement board applied to video device and video processing chip

technical field

The utility model relates to a video device, and in particular to a structure of the video device, a core board and a video processing chip applied to the video device.

Background technique

Due to the advancement of electronic technology, video devices such as television sets are used more and more in ordinary households. Please refer to FIG. 1 , which is a block diagram of an internal circuit of a conventional video device. Generally, the internal circuit of the video device 100 (such as a TV) includes a core board 11 , a timing control (timing control, T-Con) board 12 , a source driving circuit 13 , a gate driving circuit 14 and a display panel 15 . The core board 11 is the main board of the video device 100, on which a main chip for processing video signals such as video signal decoding, image scaling, color processing, output format conversion, etc. and other chips for audio signal processing, etc. are usually arranged. A timing control circuit (timing controller, T-Con) 121 is provided in the T-Con board 12, wherein the T-Con 121 is used to control the working timing of the source driving circuit 13 and the gate driving circuit 14. The source driving circuit 13 and the gate driving circuit 14 receive video signals provided by the main chip of the core board 11 and convert the video signals into display driving signals to the display panel 15 for image display on the display panel 15 .

In the prior art, a high-frequency low-voltage differential signal (Low Voltage Differential Signaling, LVDS) is transmitted from the core board 11 to the T-Con board 12 through a flexible circuit board or a wiring harness. The T-Con board 12 further transmits display data signals and control signals to the source driving circuit 13 and the gate driving circuit 14 through the flexible circuit board or the wiring harness.

However, the existing above-mentioned video device 100 needs to be provided with wire harnesses between the core board 11 and the T-Con board 12, and between the T-Con board 12 and the source drive circuit 13 and the grid drive circuit 14. However, due to the large number of wiring harnesses, the high-frequency LVDS signal will be interfered and distorted during the output process, and the optimal picture quality cannot be guaranteed.

At the same time, video devices such as televisions tend to be thinner and thinner. However, the core board 11 and the T-Con board 12 of the video device 100 in the prior art are separately and independently arranged, which is not conducive to thinning the video device 100 .

Utility model content

In view of the above problems, the purpose of this utility model is to provide a video device, which can save the cost of T-Con board and wiring harness, and avoid interference and distortion of high-frequency LVDS signal in the output process, so as to ensure the optimal picture.

Furthermore, the purpose of the present invention is to provide a core board applied to a video device.

In addition, the purpose of the present utility model is to provide a video processing chip, which is applied to a core board of a video device.

The utility model provides a video device, which includes a core board, a display panel, a source drive circuit and a gate drive circuit. A main chip for video processing is arranged on the core board, and a timing control circuit for controlling the working timing of the source driving circuit and the gate driving circuit is integrated in the main chip.

In one embodiment of the present invention, the aforementioned source driver circuit includes a source driver chip and a first flexible circuit board, the source driver chip is arranged on the first flexible circuit board, and the first flexible circuit board is electrically connected to the display The panel and the core board; the gate drive circuit includes a gate drive chip and a second flexible circuit board, the gate drive chip is arranged on the second flexible circuit board, and the second flexible circuit board is electrically connected to the display panel and the core board.

In an embodiment of the present invention, the aforementioned source driving circuit further includes a source driving board, and the first flexible circuit board and the second flexible circuit board are electrically connected to the core board through the source driving board.

In one embodiment of the present invention, the aforementioned display panel is a liquid crystal display panel.

In one embodiment of the present invention, the aforementioned video device is an LED backlight LCD TV.

The video device of the utility model integrates the T-Con function into the main chip of the core board, and directly sends control signals to the source drive circuit and the gate drive circuit, which can save the cost of the T-Con board and wiring harness, and avoid high frequency The interference and distortion of the LVDS signal during the output process ensure the best picture.

The utility model also proposes a core board, which is applied to a video device, and the video device includes a display panel, a source driving circuit and a grid driving circuit. The core board is equipped with a main chip for video processing. The main chip is used to provide video signals to the source drive circuit and the gate drive circuit. The source drive circuit and the gate drive circuit convert the video signal into a display drive signal. Image display is performed by driving the display panel. In addition, a timing control circuit for controlling the working timing of the source driving circuit and the gate driving circuit is integrated in the main chip.

The core board of the utility model integrates the T-Con function into the main chip of the core board, and directly sends control signals to the source drive circuit and the grid drive circuit, which can save the cost of the T-Con board and wiring harness, and avoid high Interference and distortion of high-frequency LVDS signal in the output process to ensure the best picture.

The utility model further proposes a video processing chip, which is applied to a core board of a video device. The video device includes a display panel, a source driving circuit and a gate driving circuit. The video processing chip is used to provide video signals to the source driving circuit and the gate driving circuit, and the source driving circuit and the gate driving circuit convert the video signals into display driving signals to drive the display panel for image display. The above-mentioned video processing chip is integrated with a timing control circuit for controlling the working timing of the source driver circuit and the gate driver circuit, so that the video processing chip has both video processing and timing control functions.

The video processing chip of the utility model integrates the T-Con function in it, so as to directly provide control signals to the source drive circuit and the gate drive circuit, which can save the cost of the T-Con board and wiring harness, and avoid high-frequency LVDS signals in the Interference and distortion in the output process to ensure the best picture.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the utility model better It is obvious and easy to understand. The following specific embodiments are described in detail in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a block diagram of an internal circuit of a conventional video device.

FIG. 2 is a block diagram of an internal circuit of a video device according to a preferred embodiment of the present invention.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the invention, the video device proposed according to the utility model, the core board applied to the video device and the video device are described below in conjunction with the drawings and preferred embodiments The specific implementation, structure, features and functions of the processing chip are described in detail below.

The aforementioned and other technical contents, features and effects of the present utility model will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation, one can get a deeper and more specific understanding of the technical means and effects of the utility model to achieve the intended purpose, but the attached drawings are only for reference and description, and are not used to explain the present invention. Utility models are restricted.

Please refer to FIG. 2 , which is a block diagram of an internal circuit of a video device according to a preferred embodiment of the present invention. The video device described in the present invention can be a light-emitting diode backlight type LCD TV, which is just an example, but not limited thereto, and it can also be other types of flat-panel TVs.

In this embodiment, the video device 200 includes a core board 21 , a source driving circuit 23 , a gate driving circuit 24 and a display panel 25 . Wherein, the core board 21 is provided with a main chip 211 for video processing, and the main chip 211 can be used for video processing such as video decoding, color processing, image scaling and output format conversion, for example. The source driving circuit 23 and the gate driving circuit 24 receive the video signal provided by the main chip 211 and convert the video signal into a display driving signal to the display panel 25 for image display on the display panel 25 . The display panel 25 is an active type display panel, such as a liquid crystal display panel. In addition, the main chip 211 integrates a timing controller (timing controller, T-con) 212 to further provide timing control signals to control the working timing of the source driving circuit 23 and the gate driving circuit 24 .

Further referring to FIG. 2 , the source driver circuit 23 includes a plurality of source driver ICs (sourcedriver IC) 231, a plurality of first flexible circuit boards (flexible board) 232 and a source driver IC 233, wherein each source driver IC 231 respectively arranged on each of the first flexible circuit boards 232, for example, adopting a tape carrier package (Tape Carrier Package; TCP) method or a chip on film bonding (chip on Film; COF) packaging method to be arranged on the first flexible circuit board 232 on. The first flexible circuit board 232 is electrically connected to the display panel 25 and the core board 21. In this embodiment, the first flexible circuit board 232 is mounted between the display panel 25 and the source driver board 233 to receive from the source driver board 233. Video signals and timing control signals, that is, the first flexible circuit board 232 is electrically connected to the core board 21 through the source driver board 233 . It can be understood that the first flexible circuit board 232 can also be directly electrically connected between the display panel 25 and the core board 21 .

The gate driver circuit 24 includes a plurality of gate driver ICs (gate driver IC) 241 and a plurality of second flexible circuit boards (flexible board) 242, wherein each gate driver IC 241 is respectively arranged on each second flexible circuit board 242 For example, it is disposed on the second flexible circuit board 242 in a tape carrier package (Tape Carrier Package; TCP) or a chip on Film (COF) package. The second flexible circuit board 242 is electrically connected to the display panel 25 and the core board 21. In this embodiment, the second flexible circuit board 242 is mounted on the display panel 25 and passes through the first flexible circuit board 232 and the source driver board 233. electrically connected to receive timing control signals. That is, the second flexible circuit board 242 is electrically connected to the core board 21 through the source driver board 233 . It can be understood that the second flexible circuit board 242 can also be directly electrically connected between the display panel 25 and the core board 21 .

It can be seen from the above that the present invention also provides a core board 21 which is applied to the video device 200 . The video device 200 includes a source driving circuit 23 , a gate driving circuit 24 and a display panel 25 . The core board 21 is provided with a main chip 211 for video processing, the main chip 211 is used to provide video signals to the source drive circuit 23 and the gate drive circuit 24, and the source drive circuit 23 and the gate drive circuit 24 convert the video signal The signal is converted into a display driving signal to drive the display panel 25 for image display. In addition, the T-con 212 is integrated in the main chip 211 to further provide timing control signals to control the working timing of the source driving circuit 23 and the gate driving circuit 24 .

In addition, the present invention also provides a video processing chip, which is used as the main chip 211 on the core board 21 of the video device 200 . The video device 200 includes a source driving circuit 23 , a gate driving circuit 24 and a display panel 25 . The video processing chip is used to provide video signals to the source drive circuit 23 and the gate drive circuit 24, and the source drive circuit 23 and the gate drive circuit 24 convert the video signal into a display drive signal to drive the display panel 25 for image processing. show. In addition, a T-con 212 is integrated in the video processing chip to further provide timing control signals to control the working timing of the source driver circuit 23 and the gate driver circuit 24, so that the video processing chip has both video processing and timing control Function.

In summary, the video device described in the present invention, the core board and the video processing chip applied to the video device directly provide the source drive circuit by integrating the T-Con function into the main chip 211 of the core board 21. 23 and the gate drive circuit 24 use control signals to save the cost of T-Con boards and wiring harnesses, avoid interference and distortion of high-frequency LVDS signals during output, and ensure the best picture.

The above is only an embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with the embodiment, it is not used to limit the utility model. Anyone who is familiar with this field Technicians, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the utility model, according to Technical Essence of the Utility Model Any simple modifications, equivalent changes and modifications made to the above embodiments still belong to the scope of the technical solution of the utility model.

Claims (7)

1. A video device comprising: The core board is provided with a main chip for video processing; a display panel; and A source drive circuit and a gate drive circuit are electrically connected to the core board and the display panel; It is characterized in that a timing control circuit for controlling the working timing of the source driving circuit and the gate driving circuit is integrated in the main chip. 2. The video device of claim 1, wherein: The source driving circuit includes a source driving chip and a first flexible circuit board, the source driving chip is arranged on the first flexible circuit board, and the first flexible circuit board is electrically connected to the display panel and the first flexible circuit board. the core board; The gate drive circuit includes a gate drive chip and a second flexible circuit board, the gate drive chip is arranged on the second flexible circuit board, and the second flexible circuit board is electrically connected to the display panel and the second flexible circuit board. The core board. 3. The video device according to claim 2, wherein the source driving circuit further comprises a source driving board, and the first flexible circuit board and the second flexible circuit board are driven by the source A board is electrically connected to the core board. 4. The video device according to claim 1, wherein the display panel is a liquid crystal display panel. 5. The video device according to claim 1, wherein the video device is an LED backlight type LCD TV. 6. A core board, applied to a video device, the video device includes a display panel, a source drive circuit and a gate drive circuit; the core board is provided with a main chip for video processing, and the main chip providing a video signal to the source driving circuit and the gate driving circuit, the source driving circuit and the gate driving circuit convert the video signal into a display driving signal to drive the display panel for image display , characterized in that a timing control circuit for controlling the working timing of the source driving circuit and the gate driving circuit is integrated in the main chip. 7. A video processing chip applied to the core board of a video device, said video device comprising a display panel, a source drive circuit and a grid drive circuit; said video processing chip is used to provide video signals to said source A pole drive circuit and the gate drive circuit, the source drive circuit and the gate drive circuit convert the video signal into a display drive signal to drive the display panel for image display, wherein the The video processing chip is integrated with a timing control circuit for controlling the working timing of the source driving circuit and the gate driving circuit, so that the video processing chip has both video processing and timing control functions.

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