CN1584966A - Digital image signal processing device for liquid crystal display - Google Patents

Abstract

A digital image signal processing apparatus of a liquid crystal display. The display memory is used for storing the digital image signal. The zooming controller is arranged on the first circuit board; the liquid crystal display panel comprises a plurality of display units which are respectively connected with a plurality of corresponding data electrodes and a plurality of corresponding grid electrodes; a liquid crystal display panel driving circuit including a data electrode driver and a gate electrode driver; the time schedule controller is arranged on a second circuit board coupled with the first circuit board; the image gamma value adjusting circuit is arranged on only one of the first circuit board, the second circuit board and the liquid crystal display panel driving circuit and is used for adjusting the brightness of the first display data and outputting the second display data according to the adjusting result.

Description

Digital image signal processing device for liquid crystal display

technical field

The invention relates to an image signal transmission device, in particular to a digital image signal transmission device integrating an image gamma value adjustment circuit of a liquid crystal display.

Background technique

When a liquid crystal display (LCD) displays an image, it improves the display effect of the image by adjusting the gamma value (Gamma). Gamma is the tonal or intermediate level of gray that affects the mid-value of an image. By adjusting the gamma value of the display, the brightness value of a specific gray scale of the image can be changed to improve the display effect. When adjusting the gamma value of the monitor, if the gamma value is increased, the image displayed in the corresponding gray scale will become brighter, otherwise, the image displayed in the corresponding gray scale will become darker. The output image has a realistic display effect.

FIG. 1 is a diagram showing an image signal processing system of a conventional liquid crystal display. The display memory 10 is used to store digital image signals for display by the liquid crystal display. Since the pixel position and resolution of a liquid crystal display panel are fixed after the manufacture is completed, but the resolution output by the audio-visual device is multiple, when the liquid crystal display panel must receive audio-visual signals of different resolutions, it must be scaled to achieve It is suitable for the size of a screen, so the signal needs to be scaled by the scaling controller. Therefore, the signal output from the display memory 10 adjusts the parameters of the digital image signal according to the size of the LCD panel 18 via a scaler 122 , so that the displayed image corresponds to the image size of the LCD panel 18 .

Here, the conventional technology designs an image gamma value (gamma) adjustment circuit 120A to adjust the brightness of the display data corresponding to the digital image signal. US Patent No. 5710594 discloses a method and device for adjusting the gamma value of a digital image.

As shown in FIG. 1 , the conventional zoom controller 122 and the image gamma adjustment circuit 120A are disposed on the first circuit board 12 at the same time. The first circuit board 12 further has an onscreen display 124 (onscreen display, OSD) and a microcontroller 126 (micro control unit, MCU). The screen status display 124 is used to display status information on the LCD when adjusting certain parameters of the LCD, including parameters such as adjusting screen display brightness, contrast, and vertical and horizontal positions. The micro-controller 126 is used to perform image processing actions, including processing image encoding or de-interlacer instructions, or coordination functions responsible for OSD appearance and font conversion. Here, the circuit provided on the first circuit board 12 is used to execute the communication and coordination between the PC host and the liquid crystal display panel module 100 .

Next, the image signal output by the first circuit board 12 is input to the LCD panel module 100 . The liquid crystal display panel module 100 includes a liquid crystal display panel driving circuit 16 , a liquid crystal display panel 18 , and a second circuit board 14 for setting a timing controller 142 . The timing controller 142 is used to control the LCD panel driving circuit 16 to determine the display sequence and timing of the display units inside the LCD panel 18 .

The second circuit board 14 is a circuit board inside the liquid crystal display panel module 100, which is coupled between the liquid crystal display panel drive circuit 16 and the first circuit board 12 outside the liquid crystal display panel module 100, and has an image gamma value adjustment circuit 120B, to adjust the brightness of the display data corresponding to the image signal received by the second circuit board 14 .

The liquid crystal display panel driving circuit 16 includes a liquid crystal polarity inversion circuit 162 , a digital-to-analog conversion circuit 164 , a data electrode driver 166A and a gate electrode driver 166B. The liquid crystal polarity inverting circuit 162 is used to adjust the display polarity of the liquid crystal molecules in the display unit of the liquid crystal display panel 18 . The digital-to-analog conversion circuit 164 is used to convert the digital signal received by the liquid crystal display panel driving circuit 16 from the second circuit board 14 into an analog video signal for outputting to the corresponding data electrodes of the liquid crystal display panel 18 . In addition, the liquid crystal display panel driving circuit 16 also has an image gamma adjustment circuit 120C for displaying data brightness corresponding to the signal supplied to the liquid crystal display panel 18 .

FIG. 2 is a structural diagram showing the data electrode driver 166A, the gate electrode driver 166B, the image gamma value adjustment circuit 120C and the LCD panel 18 in the conventional LCD panel driving circuit 16 . The liquid crystal display panel 18 is formed by criss-crossing data electrodes (D1, D2, . . . ) and gate electrodes (G1, G2 , . The gate electrodes (G1, G2, . . . ) can be used to control a display unit (eg 150). The equivalent circuit of each display unit mainly includes thin film transistors (Q11, Q12, Q21, Q22...) for controlling data entry and storage capacitors (C11, C12, C21, C22,...). The gate and drain of the thin film transistor are respectively connected to the gate electrode and the data electrode. Through the scanning signal on the gate electrode, all the thin film transistors on the same column (that is, the same scanning line) can be turned on or off, so as to control the data electrode. Whether the video signal on the display can be written into the corresponding display unit.

In addition, the gate electrode driver 166B sends out a scan signal on each gate electrode according to a predetermined scan order. When a scanning signal is carried on a gate electrode, the thin film transistors in all display units on the same column or on the same scanning line will be turned on. When a certain scan line is selected, the data electrode driver 166A sends a corresponding video signal to the display units of the column via the data electrodes according to the image data to be displayed. When the gate electrode driver 166B completes the scanning operation of all n columns of scanning lines, it means that the display operation of a single frame is completed. Therefore, the purpose of continuously displaying images can be achieved by repeatedly scanning each scanning line and sending out video signals.

However, in the conventional technology, the first circuit board 12 provided with the scaling controller 122, the second circuit board 14 provided with the timing controller 142 in the liquid crystal display panel module 100, and the driving circuit 16 of the liquid crystal display panel module 100 or the liquid crystal display panel In 18, a circuit for performing image gamma value adjustment is provided. This not only leads to waste of space and cost derived from repeated circuits, but also increases the difficulty of image gamma adjustment because the adjustment of each image gamma adjustment circuit will affect the result of image gamma adjustment.

Contents of the invention

In view of this, in order to solve the above-mentioned problems, the main purpose of the present invention is to provide a digital image signal processing device for a liquid crystal display. The traditional technology is respectively applied to the scaling controller, the circuit board of the timing controller in the liquid crystal display panel module, and the liquid crystal display panel module. The driving circuit of the display panel module or the circuit for adjusting the image gamma value in the panel is integrated into a single circuit or two circuits according to the characteristics of the product, so as to simplify the adjustment procedure and save space and cost.

To achieve the above objectives, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The scaling controller is arranged on the circuit board, and is used for adjusting the size of the displayed image corresponding to the digital image signal, and outputting the first display data. The liquid crystal display panel includes a plurality of display units, respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes, for displaying corresponding image data according to the second display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The image gamma adjustment circuit is only arranged on one of the circuit board and the liquid crystal display panel driving circuit, and is used for adjusting the brightness of the first display data, and outputting the second display data according to the adjustment result.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The scaling controller is arranged on the first circuit board, and is used for adjusting the size of the displayed image corresponding to the digital image signal, and outputting the first display data. The liquid crystal display panel includes a plurality of display units, respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes, for displaying corresponding image data according to the second display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The image gamma value adjustment circuit is arranged on the second circuit board coupled between the first circuit board and the liquid crystal display panel driving circuit to adjust the brightness of the first display data and output the second display data according to the adjustment result .

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The scaling controller is arranged on the first circuit board, and is used for adjusting the size of the displayed image corresponding to the digital image signal, and outputting the first display data. The liquid crystal display panel module includes a liquid crystal display panel, a driving circuit for the liquid crystal display panel and a second circuit board. The liquid crystal display panel includes a plurality of display units, respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes, for displaying corresponding image data according to the second display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The second circuit board is coupled between the liquid crystal display panel driving circuit and the scaling controller. The image gamma value adjustment circuit is only arranged on the first circuit board and the second circuit board, or the second circuit board and the liquid crystal display panel driving circuit, to adjust the brightness of the first display data, and output the second display according to the adjustment result data.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The liquid crystal display panel module includes a liquid crystal display panel, a driving circuit for the liquid crystal display panel, and a timing controller. The liquid crystal display panel includes a plurality of display units, which are respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes for displaying corresponding image data according to the display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The timing controller is arranged on the first circuit board and is used to control the driving circuit of the liquid crystal display panel to determine the display sequence and timing of the display unit. The image gamma value adjustment circuit is only arranged on one of the first circuit board and the liquid crystal display panel driving circuit, and is used for adjusting the brightness of the digital image signal, and outputting display data according to the adjustment result.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The liquid crystal display panel includes a plurality of display units, which are respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes for displaying corresponding image data according to the display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The timing controller is arranged on the first circuit board and is used to control the driving circuit of the liquid crystal display panel to determine the display sequence and timing of the display unit. The image gamma adjustment circuit is arranged on the second circuit board coupled between the display memory and the liquid crystal display panel module to adjust the brightness of the digital image signal and output display data according to the adjustment result.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The liquid crystal display panel includes a plurality of display units, which are respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes for displaying corresponding image data according to the display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The timing controller is arranged on the first circuit board to control the driving circuit of the liquid crystal display panel to determine the display sequence and timing of the display unit. The second circuit board is coupled between the display memory and the LCD panel module. The image gamma value adjustment circuit is only arranged on two of the first circuit board, the second circuit board and the liquid crystal display panel driving circuit, and is used for adjusting the brightness of the digital image signal, and outputting display data according to the adjustment result.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The scaling controller is arranged on the first circuit board, and is used for adjusting the size of the displayed image corresponding to the digital image signal, and outputting the first display data. The liquid crystal display panel includes a plurality of display units, respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes, for displaying corresponding image data according to the second display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate plate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The timing controller is arranged on the second circuit board coupled to the first circuit board, and is used for controlling the driving circuit of the liquid crystal display panel to determine the display sequence and timing of the display units. The image gamma value adjustment circuit is only arranged on one of the first circuit board, the second circuit board, and the liquid crystal display panel driving circuit, and is used for adjusting the brightness of the first display data, and outputting the second display data according to the adjustment result.

In addition, the present invention provides a digital image signal processing device for a liquid crystal display. Display memory is used to store digital image signals. The scaling controller is arranged on the first circuit board, and is used for adjusting the size of the displayed image corresponding to the digital image signal, and outputting the first display data. The liquid crystal display panel includes a plurality of display units, respectively connected to corresponding plurality of data electrodes and plurality of gate electrodes, for displaying corresponding image data according to the second display data. The liquid crystal display panel driving circuit includes a data electrode driver and a gate electrode driver for respectively driving corresponding data electrodes and gate electrodes. The timing controller is arranged on the second circuit board to control the driving circuit of the liquid crystal display panel to determine the display sequence and timing of the display unit. The image gamma value adjustment circuit is only arranged on the first circuit board, the second circuit board, and the liquid crystal display panel driving circuit to adjust the brightness of the first display data, and output the second display data according to the adjustment result .

Description of drawings:

FIG. 1 is a diagram showing an image signal processing system of a conventional liquid crystal display.

FIG. 2 is a structural diagram showing a data electrode driver, a gate electrode driver, an image gamma adjustment circuit and a liquid crystal display panel in a conventional liquid crystal display panel driving circuit.

FIG. 3 is a diagram showing an image signal processing system of a liquid crystal display according to a first embodiment of the present invention.

FIG. 4 is a structural diagram showing a data electrode driver and a gate electrode driver in the liquid crystal display panel driving circuit and the liquid crystal display panel.

FIG. 5 is a diagram showing an image signal processing system of a liquid crystal display according to a second embodiment of the present invention.

FIG. 6 shows an image signal processing system of a liquid crystal display according to a third embodiment of the present invention.

FIG. 7 shows an image signal processing system of a liquid crystal display according to a fourth embodiment of the present invention.

FIG. 8 shows an image signal processing system of a liquid crystal display according to a fifth embodiment of the present invention.

FIG. 9 shows an image signal processing system for a liquid crystal display according to a sixth embodiment of the present invention.

FIG. 10 shows an image signal processing system of a liquid crystal display according to a seventh embodiment of the present invention.

FIG. 11 shows an image signal processing system of a liquid crystal display according to an eighth embodiment of the present invention.

FIG. 12 shows an image signal processing system of a liquid crystal display according to a ninth embodiment of the present invention.

FIG. 13 shows an image signal processing system of a liquid crystal display according to a tenth embodiment of the present invention.

FIG. 14 is a diagram showing an image signal processing system of a liquid crystal display according to an eleventh embodiment of the present invention.

FIG. 15 is a diagram showing an image signal processing system of a liquid crystal display according to a twelfth embodiment of the present invention.

FIG. 16 is a diagram showing an image signal processing system of a liquid crystal display according to a thirteenth embodiment of the present invention.

FIG. 17 shows an image signal processing system of a liquid crystal display according to a fourteenth embodiment of the present invention.

FIG. 18 is a diagram showing an image signal processing system of a liquid crystal display according to a fifteenth embodiment of the present invention.

FIG. 19 is a diagram showing an image signal processing system of a liquid crystal display according to a sixteenth embodiment of the present invention.

FIG. 20 is a diagram showing an image signal processing system of a liquid crystal display according to a seventeenth embodiment of the present invention.

Symbol Description:

10, 20, 30, 40 ~ display memory

12, 22, 34, 42 ~ the first circuit board

14, 24, 32, 44～second circuit board

122, 222, 422 ~ scaling controller

124, 224, 324, 424～screen status display

126, 226, 326, 426～microcontroller

100, 200, 300, 400～LCD panel module

142, 342, 442～sequence controller

150, 250～display unit

16, 26, 36, 46 ~ liquid crystal display panel drive circuit

162, 262, 362, 462～LCD polarity inversion circuit

164, 264, 364, 464～digital-analog conversion circuit

166A, 266A, 366A, 466A～data electrode driver

166B, 266B, 366B, 466B～Gate electrode driver

120A, 120B, 120C, 25, 25A, 25B, 25C, 35, 35A, 35B, 35C, 45, 45A, 45B45C～image gamma value adjustment circuit

18, 28, 38, 48～LCD display panel

C11, C12, C21, C22～storage capacitor

D1, D2～data electrodes

G1, G2～Gate electrode

Q11, Q12, Q21, Q22～thin film transistor

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, a preferred embodiment will be described in detail below together with the accompanying drawings.

Example:

The digital image signal processing device according to the embodiment of the present invention is mainly applied to a liquid crystal display system and integrates an image gamma adjustment circuit of a traditional digital image signal processing device.

first embodiment

FIG. 3 is a diagram showing an image signal processing system of a liquid crystal display according to a first embodiment of the present invention. The display memory 20 is used to store digital image signals for display by the liquid crystal display. Since the pixel position and resolution of a liquid crystal display panel are fixed after the manufacture is completed, but the resolution output by the audio-visual device is multiple, when the liquid crystal display panel must receive audio-visual signals of different resolutions, it must be scaled to achieve fits the size of a screen. Therefore, the signal output from the display memory 20 adjusts the parameters of the digital image signal according to the size of the LCD panel 28 via a scaler 222 , so that the displayed image corresponds to the image size of the LCD panel 28 .

The image gamma adjustment circuit 25 is used to adjust the brightness of the display data corresponding to the digital image signal, and is disposed on the first circuit board 22 together with the scaling controller 222 . In addition, the first circuit board 22 further has an on screen display 224 (on screen display, OSD), or a microcontroller 226 (micro control unit, MCU) as required. The screen status display 224 displays status information on the LCD when adjusting specific parameters of the LCD, including parameters such as adjusting screen display brightness, contrast, and vertical and horizontal positions. The microcontroller 226 executes image processing actions, including processing image encoding or de-interlacer instructions, or a coordinating function responsible for OSD appearance and font conversion. Here, the circuits provided on the first circuit board 22 are mainly used to perform communication and coordination actions between the host terminal and the LCD panel module 200 .

Next, the image signal output by the first circuit board 22 is input to the LCD panel module 200 . The liquid crystal display panel module 200 includes a liquid crystal display panel driving circuit 26 and a liquid crystal display panel 28 .

The liquid crystal display panel driving circuit 26 includes a liquid crystal polarity inversion circuit 262 , a digital-to-analog conversion circuit 264 , a data electrode driver 266A and a gate electrode driver 266B. The liquid crystal polarity inversion circuit 262 is used to adjust the display polarity of the liquid crystal molecules in the display unit of the liquid crystal display panel 28 . The digital-to-analog conversion circuit 264 is used to convert the signal output from the LCD panel driving circuit 26 to the corresponding data electrode of the LCD panel 28 into an analog video signal.

FIG. 4 is a structural diagram showing the data electrode driver 266A, the gate electrode driver 266B and the LCD panel 28 in the LCD panel driving circuit 26 . The liquid crystal display panel 18 is formed by criss-crossing data electrodes (D1, D2, . . . ) and gate electrodes (G1, G2 , . The gate electrodes (G1, G2, . . . ) can be used to control a display unit (eg 250). The equivalent circuit of each display unit mainly includes thin film transistors (Q11, Q12, Q21, Q22, . . . ) for controlling data entry and storage capacitors (C11, C12, C21, C22, . . . ). The gate and drain of the thin film transistor are respectively connected to the gate electrode and the data electrode. Through the scanning signal on the gate electrode, all the thin film transistors on the same column (that is, the same scanning line) can be turned on or off, so as to control the data electrode. Whether the video signal on the display can be written into the corresponding display unit.

In addition, the gate electrode driver 266B sends out a scan signal on each gate electrode according to a predetermined scan order. When a scanning signal is carried on a gate electrode, the thin film transistors in all display units on the same column or on the same scanning line will be turned on. When a certain scan line is selected, the data electrode driver 266A sends a corresponding video signal to the display units of this column via the data electrodes according to the image data to be displayed. When the gate electrode driver 266B completes the scanning operation of all n columns of scanning lines, it means that the display operation of a single frame is completed. Therefore, the purpose of continuously displaying images can be achieved by repeatedly scanning each scanning line and sending out video signals.

According to the first embodiment of the present invention, a single image gamma value adjustment circuit 25 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. Since the image gamma value adjustment circuit 25 is located on the first circuit board 22 outside the liquid crystal display panel module 200, the setting of the image gamma value adjustment circuit 25 can be directly and dynamically adjusted, and in the liquid crystal display panel module 200, there is no need for additional Increase the design of adjusting the image gamma value, so effectively improve the problem of cost and space waste caused by the repeated design of the image gamma value adjustment circuit 25 in the traditional technology, moreover, according to the digital image signal processing described in the first embodiment of the present invention The device can further simplify the image gamma value adjustment procedure and avoid the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result.

second embodiment

FIG. 5 is a diagram showing an image signal processing system of a liquid crystal display according to a second embodiment of the present invention. In the second embodiment of the present invention, the components and their functions that are the same as those in the first embodiment will not be described again here, and the same reference numerals as in FIG. 3 will be maintained. According to the second embodiment of the present invention, the image gamma value adjustment circuit 25 is arranged in the liquid crystal display panel driving circuit 26 of the liquid crystal display panel module 200 to adjust the image signal received by the liquid crystal display panel driving circuit 26 from the first circuit board 22 The corresponding display data brightness. In the second embodiment, the first circuit board 22 does not have an image gamma adjustment circuit. In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 25 of the liquid crystal display panel drive circuit 26 is directly converted into an analog video signal by the digital-to-analog conversion circuit 264, and then supplied to the liquid crystal display panel. 28 corresponding to the data electrodes, so that the liquid crystal display panel 28 displays display data with corresponding brightness.

According to the second embodiment of the present invention, a single image gamma value adjustment circuit 25 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the second embodiment, the liquid crystal display panel module 200 only has a single image gamma value adjustment circuit, and the first circuit board 22 outside the liquid crystal display panel module 200 does not need to be additionally designed to adjust the image gamma value, so it effectively improves The traditional technology causes problems of cost and space waste due to repeated design of the image gamma value adjustment circuit 25 . Furthermore, according to the digital image signal processing device described in the second embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided.

third embodiment

FIG. 6 shows an image signal processing system of a liquid crystal display according to a third embodiment of the present invention. In the third embodiment of the present invention, the same components and their functions as those in the first embodiment will not be described again here, and the same reference numerals as in FIG. 3 will be maintained. According to the third embodiment of the present invention, a second circuit board 24 is added in the liquid crystal display panel module 200, which is coupled between the liquid crystal display panel driving circuit 26 and the first circuit board 22 outside the liquid crystal display panel module 200 for An image gamma adjustment circuit 25 is provided to adjust the brightness of display data corresponding to the image signal received by the second circuit board 24 . In the third embodiment, the first circuit board 22 does not have an image gamma adjustment circuit. In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 25 of the second circuit board 24 is directly provided to the liquid crystal display panel driving circuit 26, and converted into an analog video signal by a digital-to-analog conversion circuit 264 After that, it can be supplied to the corresponding data electrodes of the liquid crystal display panel 28, so that the liquid crystal display panel 28 displays display data with corresponding brightness.

According to the third embodiment of the present invention, a single image gamma value adjustment circuit 25 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the third embodiment, the liquid crystal display panel module 200 only has a single image gamma value adjustment circuit, and the first circuit board 22 outside the liquid crystal display panel module 200 does not need additional design for adjusting the image gamma value, so it effectively improves The traditional technology causes problems of cost and space waste due to repeated design of the image gamma value adjustment circuit 25 . Furthermore, according to the digital image signal processing device described in the third embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided.

Fourth embodiment

FIG. 7 shows an image signal processing system of a liquid crystal display according to a fourth embodiment of the present invention. In the fourth embodiment of the present invention, the components and their functions that are the same as those in the first embodiment will not be described again here, and the same reference numerals as in FIG. 3 will be maintained. According to the fourth embodiment of the present invention, a second circuit board 24 is added in the liquid crystal display panel module 200, which is coupled between the liquid crystal display panel driving circuit 26 and the first circuit board 22 outside the liquid crystal display panel module 200, It is used to set the image gamma adjustment circuit 25B to adjust the brightness of the display data corresponding to the image signal received by the second circuit board 24 . Therefore, the brightness of the image displayed on the liquid crystal display panel 28 is jointly adjusted by the image gamma value adjustment circuit 25A of the first circuit board 22 and the image gamma value adjustment circuit 25B of the second circuit board 24, and the liquid crystal display panel driving circuit 26 No need to add the design of adjusting the gamma value of the image.

In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 25B of the second circuit board 24 is directly provided to the liquid crystal display panel driving circuit 26, and converted into an analog video signal by the digital-to-analog conversion circuit 264 After that, it can be supplied to the corresponding data electrodes of the liquid crystal display panel 28, so that the liquid crystal display panel 28 displays display data with corresponding brightness.

According to the fourth embodiment of the present invention, the gamma value of the image of the image signal processing system of the entire liquid crystal display can be adjusted by using the two image gamma value adjustment circuits 25A and 25B. Compared with the traditional technology, the image gamma adjustment circuit must be installed on the first circuit board 22, the second circuit board 24 of the liquid crystal display panel module 200, and the liquid crystal display panel driving circuit 26 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

fifth embodiment

FIG. 8 shows an image signal processing system of a liquid crystal display according to a fifth embodiment of the present invention. In the fifth embodiment of the present invention, the same components and their functions as those in the first embodiment will not be described again here, and the same reference numerals as in FIG. 3 will be maintained. According to the fifth embodiment of the present invention, a second circuit board 24 is added in the liquid crystal display panel module 200, which is coupled between the liquid crystal display panel driving circuit 26 and the first circuit board 22 outside the liquid crystal display panel module 200, It is used to set the image gamma adjustment circuit 25B to adjust the brightness of the display data corresponding to the image signal received by the second circuit board 24 . Moreover, an image gamma adjustment circuit 25C is also provided in the LCD panel driving circuit 26 to adjust the brightness of the display data corresponding to the image signal finally output to the LCD panel 28 . Therefore, the brightness of the image displayed on the liquid crystal display panel 28 is jointly adjusted by the image gamma value adjustment circuit 25B of the second circuit board 24 and the image gamma value adjustment circuit 25C of the liquid crystal display panel driving circuit 26, while the first circuit board 22 There is no need to add the design of adjusting the gamma value of the image.

Therefore, according to the fifth embodiment of the present invention, the gamma value of the image of the image signal processing system of the entire liquid crystal display can be adjusted by using the two image gamma value adjustment circuits 25B and 25C. Compared with the traditional technology, the image gamma adjustment circuit must be installed on the first circuit board 22, the second circuit board 24 of the liquid crystal display panel module 200, and the liquid crystal display panel driving circuit 26 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Sixth embodiment

FIG. 9 shows an image signal processing system of a liquid crystal display according to a sixth embodiment of the present invention. The display memory 30 is used to store digital image signals for display by the liquid crystal display. The second circuit board 32 has an on screen display 324 (on screen display, OSD), or a microcontroller 326 (micro control unit, MCU) as required. The screen status display 324 displays status information on the LCD when adjusting specific parameters of the LCD, including parameters such as adjusting screen display brightness, contrast, and vertical and horizontal positions. The microcontroller 326 executes image processing actions, including processing image encoding or de-interlacer instructions, or a coordinating function responsible for OSD appearance and font conversion. Here, the circuits provided on the second circuit board 32 are mainly used to perform communication and coordination actions between the host terminal and the liquid crystal display panel module 300 .

Next, the image signal output by the second circuit board 32 is input to the LCD panel module 300 . The liquid crystal display panel module 300 includes a liquid crystal display panel driving circuit 36 , a liquid crystal display panel 38 , and a first circuit board 34 for setting a timing controller 342 .

The timing controller 342 is used to control the LCD panel driving circuit 36 to determine the display sequence and timing of the display units inside the LCD panel 38 . The first circuit board 34 is a circuit board inside the liquid crystal display panel module 300, which is coupled between the liquid crystal display panel drive circuit 36 and the second circuit board 32 outside the liquid crystal display panel module 300, and has an image gamma value adjustment circuit 35 to adjust the brightness of the display data corresponding to the image signal received by the first circuit board 34 .

The liquid crystal display panel driving circuit 36 includes a liquid crystal polarity inversion circuit 362 , a digital-to-analog conversion circuit 364 , a data electrode driver 366A and a gate electrode driver 366B. The liquid crystal polarity inverting circuit 362 is used to adjust the display polarity of the liquid crystal molecules in the display unit of the liquid crystal display panel 38 . The digital-to-analog conversion circuit 364 is used to convert the signal output from the liquid crystal display panel driving circuit 36 to the corresponding data electrode of the liquid crystal display panel 38 into an analog video signal.

For the structure of the data electrode driver 366A, the gate electrode driver 366B and the liquid crystal display panel 38 in the liquid crystal display panel driving circuit 36 of this embodiment, please refer to FIG. 2 and the description of the first embodiment.

According to the sixth embodiment of the present invention, a single image gamma value adjustment circuit 35 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the sixth embodiment, the liquid crystal display panel module 300 only has a single image gamma value adjustment circuit, and the second circuit board 32 outside the liquid crystal display panel module 300 does not need to be additionally designed to adjust the image gamma value, so it effectively improves The traditional technology causes problems of cost and space waste due to repeated design of the image gamma value adjustment circuit 35 . Furthermore, according to the digital image signal processing device described in the sixth embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided.

Seventh embodiment

FIG. 10 shows an image signal processing system of a liquid crystal display according to a seventh embodiment of the present invention. In the seventh embodiment of the present invention, the same components and their functions as those in the sixth embodiment will not be described again here, and the same reference numerals as in FIG. 9 will be maintained. According to the seventh embodiment of the present invention, the image gamma value adjustment circuit 35 is arranged in the liquid crystal display panel driving circuit 36 of the liquid crystal display panel module 300 to adjust the image signal received by the liquid crystal display panel driving circuit 36 from the second circuit board 32 The corresponding display data brightness. In the seventh embodiment, the first circuit board 34 does not have an image gamma adjustment circuit. In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 35 of the liquid crystal display panel drive circuit 36 is directly converted into an analog video signal by the digital-to-analog conversion circuit 364, and then supplied to the liquid crystal display panel. 38 corresponding to the data electrodes, so that the liquid crystal display panel 38 displays display data with corresponding brightness.

According to the seventh embodiment of the present invention, a single image gamma value adjustment circuit 35 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the seventh embodiment, the liquid crystal display panel module 300 only has a single image gamma value adjustment circuit, and the first circuit board 34 of the liquid crystal display panel module 300 does not need additional design for adjusting the image gamma value, thus effectively improving the traditional The technology causes problems of cost and space waste due to repeated design of the image gamma value adjustment circuit 35 . Furthermore, according to the digital image signal processing device described in the seventh embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided.

Eighth embodiment

FIG. 11 shows an image signal processing system of a liquid crystal display according to an eighth embodiment of the present invention. In the eighth embodiment of the present invention, the same components and their functions as those in the sixth embodiment will not be described again here, and the same reference numerals as in FIG. 9 will be maintained. According to the eighth embodiment of the present invention, the image gamma adjustment circuit 35 is disposed in the second circuit board 32 for adjusting the brightness of the display data corresponding to the image data output from the display memory 30 . In the eighth embodiment, the first circuit board 34 does not have an image gamma adjustment circuit.

According to the eighth embodiment of the present invention, a single image gamma value adjustment circuit 35 can be used to adjust the gamma value of the image of the image signal processing system of the entire liquid crystal display. Since the image gamma value adjustment circuit 35 is located on the second circuit board 32 outside the liquid crystal display panel module 300, the setting of the image gamma value adjustment circuit 35 can be directly and dynamically adjusted, and in the liquid crystal display panel module 300, there is no need for additional Increase the design of adjusting the image gamma value, so effectively improve the problem of cost and space waste caused by repeated design of the image gamma value adjustment circuit 35 in the traditional technology, moreover, according to the digital image signal processing described in the eighth embodiment of the present invention The device can further simplify the image gamma value adjustment procedure and avoid the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result.

Ninth embodiment

FIG. 12 shows an image signal processing system of a liquid crystal display according to a ninth embodiment of the present invention. In the ninth embodiment of the present invention, the same components and their functions as those in the sixth embodiment will not be described again here, and the same reference numerals as in FIG. 9 will be maintained. According to the ninth embodiment of the present invention, an image gamma adjustment circuit 35A is added on the second circuit board 32 to adjust the brightness of display data corresponding to the image signal received by the second circuit board 32 . Therefore, the brightness of the image displayed on the liquid crystal display panel 38 is jointly adjusted by the image gamma value adjustment circuit 35A of the second circuit board 32 and the image gamma value adjustment circuit 35B of the first circuit board 34, and the liquid crystal display panel driving circuit 36 There is no need to add the design of adjusting the gamma value of the image.

In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 35B of the first circuit board 34 is directly provided to the liquid crystal display panel driving circuit 36, and converted into an analog video signal by the digital-to-analog conversion circuit 364 After that, it can be supplied to the corresponding data electrodes of the liquid crystal display panel 38, so that the liquid crystal display panel 38 displays display data with corresponding brightness.

According to the ninth embodiment of the present invention, the gamma value of the image signal processing system of the entire liquid crystal display can be adjusted by using two image gamma value adjustment circuits 35A and 35B. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the second circuit board 32, the first circuit board 34 of the LCD panel module 300, and the LCD panel driving circuit 36 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Tenth embodiment

FIG. 13 shows an image signal processing system of a liquid crystal display according to a tenth embodiment of the present invention. In the tenth embodiment of the present invention, the same components and their functions as those in the sixth embodiment will not be described again here, and the same reference numerals as in FIG. 9 will be maintained. According to the tenth embodiment of the present invention, an image gamma adjustment circuit 35C is added in the liquid crystal display panel driving circuit 36 to adjust the brightness of the display data corresponding to the image signal finally output to the liquid crystal display panel 38 . Therefore, the brightness of the image displayed on the liquid crystal display panel 38 is jointly adjusted by the image gamma value adjustment circuit 35B of the first circuit board 34 and the image gamma value adjustment circuit 35C of the liquid crystal display panel drive circuit 36, while the second circuit board 32 There is no need to add the design of adjusting the gamma value of the image.

Therefore, according to the tenth embodiment of the present invention, the image signal provided to the liquid crystal display panel module 300 does not perform the image gamma value adjustment step at all. In the tenth embodiment, two image gamma value adjustment circuits 35B and 35C are used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the second circuit board 32, the first circuit board 34 of the LCD panel module 300, and the LCD panel driving circuit 36 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Eleventh embodiment

FIG. 14 is a diagram showing an image signal processing system of a liquid crystal display according to an eleventh embodiment of the present invention. In the eleventh embodiment of the present invention, the same components and their functions as those in the sixth embodiment will not be described again here, and the same reference numerals as in FIG. 9 will be maintained. According to the eleventh embodiment of the present invention, an image gamma adjustment circuit 35A is added on the second circuit board 32 to adjust the brightness of display data corresponding to the image signal received by the second circuit board 32 . Furthermore, in the eleventh embodiment, an image gamma adjustment circuit 35C is added in the LCD panel driving circuit 36 to adjust the brightness of the display data corresponding to the image signal finally output to the LCD panel 38 . Therefore, the brightness of the image displayed on the liquid crystal display panel 38 is jointly adjusted by the image gamma value adjustment circuit 35A of the second circuit board 32 and the image gamma value adjustment circuit 35C of the liquid crystal display panel drive circuit 36, while the first circuit board 34 No need to add the design of adjusting the gamma value of the image.

Therefore, according to the eleventh embodiment of the present invention, the gamma value of the image of the image signal processing system of the entire liquid crystal display can be adjusted by using the two image gamma value adjustment circuits 35A and 35C. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the second circuit board 32, the first circuit board 34 of the LCD panel module 300, and the LCD panel driving circuit 36 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Twelfth embodiment

FIG. 15 is a diagram showing an image signal processing system of a liquid crystal display according to a twelfth embodiment of the present invention. The display memory 40 is used to store digital image signals for display by the liquid crystal display. Since the pixel position and resolution of a liquid crystal display panel are fixed after the manufacture is completed, but the resolution output by the audio-visual device is multiple, when the liquid crystal display panel must receive audio-visual signals of different resolutions, it must be scaled to achieve fits the size of a screen. Therefore, the signal output from the display memory 40 adjusts the parameters of the digital image signal according to the size of the LCD panel 48 through a scaler 422 , so that the displayed image corresponds to the image size of the LCD panel 48 .

The image gamma adjustment circuit 45 is used to adjust the brightness of the display data corresponding to the digital image signal, and it is disposed on the first circuit board 42 together with the scaling controller 422 . In addition, the first circuit board 42 is further provided with an on screen display 424 (on screen display, OSD), or a microcontroller 426 (micro control unit, MCU) as required. The screen status display 424 displays status information on the LCD when adjusting specific parameters of the LCD, including parameters such as adjusting screen display brightness, contrast, and vertical and horizontal positions. The microcontroller 426 executes image processing actions, including processing image encoding or de-interlacer instructions, or a coordinating function responsible for OSD appearance and font conversion. Here, the circuits disposed on the first circuit board 42 are mainly used to perform communication and coordination actions between the host terminal and the liquid crystal display panel module 400 .

Next, the image signal output by the first circuit board 42 is input to the LCD panel module 400 . The liquid crystal display panel module 400 includes a liquid crystal display panel driving circuit 46 , a liquid crystal display panel 48 , and a second circuit board 44 for setting a timing controller 442 .

The timing controller 442 is used to control the LCD panel driving circuit 46 to determine the display sequence and timing of the display units inside the LCD panel 48 . The second circuit board 44 is a circuit board inside the LCD panel module 400 , and is coupled between the LCD panel driving circuit 46 and the first circuit board 42 outside the LCD panel module 400 .

The liquid crystal display panel driving circuit 46 includes a liquid crystal polarity inversion circuit 462 , a digital-to-analog conversion circuit 464 , a data electrode driver 466A and a gate electrode driver 466B. The liquid crystal polarity inversion circuit 462 is used to adjust the display polarity of the liquid crystal molecules in the display unit of the liquid crystal display panel 48 . The digital-to-analog conversion circuit 464 is used to convert the signal output from the liquid crystal display panel driving circuit 46 to the corresponding data electrode of the liquid crystal display panel 48 into an analog video signal.

For the structure of the data electrode driver 466A, the gate electrode driver 466B and the liquid crystal display panel 48 in the liquid crystal display panel driving circuit 46 of this embodiment, please refer to FIG. 2 and the description of the first embodiment.

According to the twelfth embodiment of the present invention, a single image gamma value adjustment circuit 45 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. Since the image gamma value adjustment circuit 45 is located on the first circuit board 42 outside the liquid crystal display panel module 400, the setting of the image gamma value adjustment circuit 45 can be directly and dynamically adjusted, and in the liquid crystal display panel module 400, there is no need for additional Increase the design of adjusting the image gamma value, so effectively improve the problem of cost and space waste caused by the repeated design of the image gamma value adjustment circuit 45 in the traditional technology, moreover, according to the digital image signal described in the twelfth embodiment of the present invention The processing device can further simplify the image gamma value adjustment procedure and avoid the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result.

Thirteenth embodiment

FIG. 16 is a diagram showing an image signal processing system of a liquid crystal display according to a thirteenth embodiment of the present invention. In the thirteenth embodiment of the present invention, the same components and their functions as those in the twelfth embodiment will not be described again here, and the same reference numerals as in FIG. 15 will be maintained. According to the thirteenth embodiment of the present invention, the image gamma value adjustment circuit 45 is arranged in the liquid crystal display panel driving circuit 46 of the liquid crystal display panel module 400 to adjust the image received by the liquid crystal display panel driving circuit 46 from the second circuit board 44 The display data brightness corresponding to the signal. In the thirteenth embodiment, the first circuit board 42 does not have an image gamma adjustment circuit. In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 45 of the liquid crystal display panel drive circuit 46 is directly converted into an analog video signal by the digital-to-analog conversion circuit 464, and then supplied to the liquid crystal display panel. 48 corresponding to the data electrodes, so that the liquid crystal display panel 48 displays display data with corresponding brightness.

According to the thirteenth embodiment of the present invention, a single image gamma value adjustment circuit 45 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the thirteenth embodiment, the liquid crystal display panel module 400 only has a single image gamma value adjustment circuit, and the first circuit board 42 does not need to add an additional design for adjusting the image gamma value, so it effectively improves the traditional technology because of repeated image design. The gamma value adjustment circuit 45 causes problems of cost and space waste. Furthermore, according to the digital image signal processing device described in the thirteenth embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided .

Fourteenth embodiment

FIG. 17 shows an image signal processing system of a liquid crystal display according to a fourteenth embodiment of the present invention. In the fourteenth embodiment of the present invention, the same components and their functions as those in the twelfth embodiment will not be described again here, and the same reference numerals as in FIG. 15 will be maintained. According to the fourteenth embodiment of the present invention, the image gamma adjustment circuit 45 is disposed in the second circuit board 44 for adjusting the brightness of display data corresponding to the image signal received by the second circuit board 44 . In the fourteenth embodiment, the first circuit board 42 does not have an image gamma adjustment circuit.

According to the fourteenth embodiment of the present invention, a single image gamma value adjustment circuit 45 can be used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. In the twelfth embodiment, the liquid crystal display panel module 400 only has a single image gamma value adjustment circuit, and the first circuit board 42 outside the liquid crystal display panel module 400 does not need additional design for adjusting the image gamma value, so it is effective The problem of cost and space waste caused by repeated design of the image gamma value adjustment circuit 45 in the conventional technology is improved. Furthermore, according to the digital image signal processing device described in the fourteenth embodiment of the present invention, the image gamma value adjustment procedure can be simplified, and the disadvantage that multiple image gamma value adjustment circuits affect each other on the gamma value adjustment result can be avoided. .

Fifteenth embodiment

FIG. 18 is a diagram showing an image signal processing system of a liquid crystal display according to a fifteenth embodiment of the present invention. In the fifteenth embodiment of the present invention, the same components and their functions as those in the twelfth embodiment will not be described again here, and the same reference numerals as in FIG. 15 will be maintained. According to the fifteenth embodiment of the present invention, a gamma value adjustment circuit 25B is added on the second circuit board 44, which is coupled between the liquid crystal display panel driving circuit 46 and the first circuit board 42 outside the liquid crystal display panel module 400, It is used to adjust the brightness of the display data corresponding to the image signal received by the second circuit board 44 . Therefore, the brightness of the image displayed on the liquid crystal display panel 48 is adjusted jointly by the image gamma value adjustment circuit 45A of the first circuit board 42 and the image gamma value adjustment circuit 45B of the second circuit board 44, and the liquid crystal display panel driving circuit 46 There is no need to add the design of adjusting the gamma value of the image.

In addition, the image signal after the image gamma value adjusted by the image gamma value adjustment circuit 45B of the second circuit board 44 is directly provided to the liquid crystal display panel driving circuit 46, and converted into an analog video signal by the digital-to-analog conversion circuit 464 After that, it can be supplied to the corresponding data electrodes of the liquid crystal display panel 48, so that the liquid crystal display panel 48 displays display data with corresponding brightness.

According to the fifteenth embodiment of the present invention, the gamma value of the image in the image signal processing system of the entire liquid crystal display can be adjusted by using two image gamma value adjustment circuits 45A and 45B. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the first circuit board 42, the second circuit board 44 of the LCD panel module 400, and the LCD panel driving circuit 46 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Sixteenth embodiment

FIG. 19 is a diagram showing an image signal processing system of a liquid crystal display according to a sixteenth embodiment of the present invention. In the sixteenth embodiment of the present invention, the same components and their functions as those in the twelfth embodiment will not be described again here, and the same reference numerals as in FIG. 15 will be maintained. According to the sixteenth embodiment of the present invention, an image gamma adjustment circuit 45C is added in the liquid crystal display panel driving circuit 46 to adjust the brightness of the display data corresponding to the image signal finally output to the liquid crystal display panel 48 . Therefore, the brightness of the image displayed by the liquid crystal display panel 48 is jointly adjusted by the image gamma value adjustment circuit 45B of the second circuit board 44 and the image gamma value adjustment circuit 45C of the liquid crystal display panel driving circuit 46, while the first circuit board 42 No need to add the design of adjusting the gamma value of the image.

Therefore, according to the sixteenth embodiment of the present invention, the image signal provided to the liquid crystal display panel module 400 does not perform the image gamma value adjustment step at all. In the sixteenth embodiment, two image gamma value adjustment circuits 45B and 45C are used to adjust the gamma value of the image in the image signal processing system of the entire liquid crystal display. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the first circuit board 42, the second circuit board 44 of the LCD panel module 400, and the LCD panel driving circuit 46 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

Seventeenth embodiment

FIG. 20 is a diagram showing an image signal processing system of a liquid crystal display according to a seventeenth embodiment of the present invention. In the seventeenth embodiment of the present invention, the same components and their functions as those in the twelfth embodiment will not be described again here, and the same reference numerals as in FIG. 15 will be maintained. According to the seventeenth embodiment of the present invention, an image gamma adjustment circuit 45A is provided on the first circuit board 42 to adjust the brightness of display data corresponding to the image signal received by the first circuit board 42 . Furthermore, in the seventeenth embodiment, an image gamma value adjustment circuit 45C is added in the liquid crystal display panel driving circuit 46 to adjust the brightness of the display data corresponding to the image signal finally output to the liquid crystal display panel 48 . Therefore, the brightness of the image displayed on the liquid crystal display panel 48 is jointly adjusted by the image gamma value adjustment circuit 45A of the first circuit board 42 and the image gamma value adjustment circuit 45C of the liquid crystal display panel driving circuit 46, while the second circuit board 44 There is no need to add the design of adjusting the gamma value of the image.

Therefore, according to the seventeenth embodiment of the present invention, the gamma value of the image of the image signal processing system of the entire liquid crystal display can be adjusted by using the two image gamma value adjustment circuits 45A and 45C. Compared with the traditional technology, the image gamma value adjustment circuit must be installed on the first circuit board 42, the second circuit board 44 of the LCD panel module 400, and the LCD panel driving circuit 46 at the same time, which effectively improves the traditional technology because of repeated design of the image gamma The problem of cost and space waste caused by adjusting the value of the circuit.

In the disclosed embodiments of the present invention, various types of liquid crystal display system architectures are described, which are suitable for various display systems with specific functions. Furthermore, there is a better integration principle for a liquid crystal display panel of a specific size. For example, for a small-sized liquid crystal display panel, due to its relatively low resolution, it is suitable to integrate an image gamma value adjustment circuit, a timing controller, and a digital-to-analog conversion circuit. For medium and large-sized liquid crystal display panels, because of the relatively high resolution required, it is suitable to integrate the timing controller and image gamma value adjustment circuit with the scaling controller outside the liquid crystal display panel module, and the digital -The analog conversion circuit is preferably integrated with the liquid crystal display panel driving circuit of the liquid crystal display panel module.

To sum up, the design of the digital image signal processing device of the liquid crystal display provided by the present invention provides a framework for integrating multiple signal processing circuits, effectively increasing the space for other components in the system design, and reducing the problems derived from repeated settings of circuits with the same function. cost, and simplify image signal processing and quality.

Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Anyone skilled in this art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (14)

1. the data image signal treating apparatus of a LCD comprises:

One display memory is in order to store a data image signal;

One scale controller is arranged at a first circuit board, in order to adjust above-mentioned data image signal the corresponding picture size that shows, and export one first video data;

One LCD panel module comprises:

One display panels comprises a plurality of display units, connects corresponding a plurality of data electrodes and a plurality of gate electrode respectively, in order to show a corresponding view data according to one second video data;

One liquid crystal display panel drive circuit comprises a data electrode driver and a gate electrode driver, respectively in order to drive corresponding above-mentioned data electrode and gate electrode; And

Time schedule controller is arranged on a second circuit board that is coupled to above-mentioned first circuit board, in order to control above-mentioned liquid crystal display panel drive circuit to determine the order and the opportunity of above-mentioned display unit demonstration; And

One image gamma value is adjusted circuit, only is arranged on one of above-mentioned first circuit board, second circuit board and liquid crystal display panel drive circuit person, in order to adjusting the brightness of above-mentioned first video data, and exports above-mentioned second video data according to adjusting the result.

2. the data image signal treating apparatus of LCD as claimed in claim 1, wherein, above-mentioned scale controller be according to the size of above-mentioned display panels adjust above-mentioned data image signal the corresponding picture size that shows.

3. the data image signal treating apparatus of LCD as claimed in claim 1, wherein, above-mentioned liquid crystal display panel drive circuit more comprises a liquid crystal polarity inversion circuit, in order to adjust the demonstration polarity of above-mentioned display unit.

4. the data image signal treating apparatus of LCD as claimed in claim 1, wherein, above-mentioned liquid crystal display panel drive circuit more comprises a D-A converting circuit, in order to above-mentioned second video data is converted to a simulating signal, and exports corresponding above-mentioned data electrode to.

5. the data image signal treating apparatus of LCD as claimed in claim 1, more comprise a screen state display, be arranged on above-mentioned first circuit board, the status information when will regulate the special parameter of LCD MODULE is presented at display panels.

6. the data image signal treating apparatus of LCD as claimed in claim 5 more comprises a microcontroller, is arranged on above-mentioned first circuit board, in order to the action of carries out image processing, and controls the shown outward appearance of above-mentioned screen state display.

7. the data image signal treating apparatus of LCD as claimed in claim 1 more comprises a microcontroller, is arranged on above-mentioned first circuit board, in order to the action of carries out image processing.

8. the data image signal treating apparatus of a LCD comprises:

One display memory is in order to store a data image signal;

One scale controller is arranged on a first circuit board, in order to adjust above-mentioned data image signal the corresponding picture size that shows, and export one first video data;

One LCD panel module comprises: a display panels, comprise a plurality of display units, and connect corresponding a plurality of data electrodes and a plurality of gate electrode respectively, in order to show a corresponding view data according to one second video data;

One liquid crystal display panel drive circuit comprises a data electrode driver and a gate electrode driver, respectively in order to drive corresponding above-mentioned data electrode and gate electrode; And

Time schedule controller is arranged on a second circuit board, in order to control above-mentioned liquid crystal display panel drive circuit to determine the order and the opportunity of above-mentioned display unit demonstration; And

A plurality of image gamma values are adjusted circuit, only be arranged on wherein the two of above-mentioned first circuit board, second circuit board and liquid crystal display panel drive circuit, in order to adjusting the brightness of above-mentioned first video data, and export above-mentioned second video data according to adjusting the result.

9. the data image signal treating apparatus of LCD as claimed in claim 8, wherein, above-mentioned scale controller be according to the size of above-mentioned display panels adjust above-mentioned data image signal the corresponding picture size that shows.

10. the data image signal treating apparatus of LCD as claimed in claim 8, wherein, above-mentioned liquid crystal display panel drive circuit more comprises a liquid crystal polarity inversion circuit, in order to adjust the demonstration polarity of above-mentioned display unit.

11. the data image signal treating apparatus of LCD as claimed in claim 8, wherein, above-mentioned liquid crystal display panel drive circuit more comprises a D-A converting circuit, in order to above-mentioned second video data is converted to a simulating signal, and exports corresponding above-mentioned data electrode to.

12. the data image signal treating apparatus of LCD as claimed in claim 8, more comprise a screen state display, be arranged at above-mentioned first circuit board, the status information when will regulate the special parameter of LCD MODULE is presented at display panels.

13. the data image signal treating apparatus of LCD as claimed in claim 12 more comprises a microcontroller, is arranged on above-mentioned first circuit board, in order to the action of carries out image processing, and controls the shown outward appearance of above-mentioned screen state display.

14. the data image signal treating apparatus of LCD as claimed in claim 8 more comprises a microcontroller, is arranged on above-mentioned first circuit board, in order to the action of carries out image processing.

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