Chromaticity intelligent optimization liquid crystal display screen

Abstract

The utility model relates to the technical field of liquid crystal display screens, and discloses a chromaticity intelligent optimization liquid crystal display screen which comprises a main control circuit, a full-color driving circuit used for adjusting RGB color output of the liquid crystal display screen, a gray level adjusting circuit, an image processing circuit, a color temperature control circuit and a backlight brightness adjusting circuit. The full-color driving circuit, the gray level adjusting circuit, the image processing circuit, the color temperature control circuit and the backlight brightness adjusting circuit are all electrically connected with the main control circuit; through the design of the gray level adjusting circuit, the image processing circuit, the color temperature control circuit and the backlight brightness adjusting circuit, the color transition and details of the liquid crystal display screen can be improved, the quality of the presented image is improved through the modes of filtering, contrast enhancement and the like, the color temperature of the display screen can be adjusted, the chromaticity optimization scheme of the liquid crystal display screen is more intelligent, and the user experience is improved. Through the circuit, the chromaticity is freely adjusted and optimized according to user preferences, and the accuracy and contrast of the color of the display screen and the overall visual effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen with intelligent chromaticity optimization. Background Art

[0002] Liquid crystal display is a flat panel display device that uses the special physical properties of liquid crystal materials to display images. Liquid crystal display has been widely used in various fields due to its low power consumption, high resolution, bright colors and other characteristics. The working principle of liquid crystal display is mainly based on the optical properties of liquid crystal molecules. Under the action of electric field, liquid crystal molecules will change their arrangement, thereby affecting the passage and blocking of light. By controlling the change of electric field, the light transmittance of each pixel can be precisely controlled to present an image.

[0003] In LCD screens, specialized video processors and peripheral modules (circuits) are usually used to process and optimize images in real time to improve display effects.

[0004] After searching, the patent with application number CN201810820047.0 discloses a method for optimizing the chromaticity of a liquid crystal display and a liquid crystal display device. The invention starts from the combination of a liquid crystal panel and a backlight source, and adopts a method of optimizing the cross-matching of the combination between the liquid crystal panel and the backlight source, so that the chromaticity tolerance range of the white point chromaticity coordinates of the finished liquid crystal display after assembly is: x / y±0.015, which effectively improves the chromaticity error of the assembled liquid crystal display and can be implemented in automated production.

[0005] The current method of optimizing the chromaticity of LCD screens is relatively common and one-sided. For example, the above-mentioned solution simply uses a combination of LCD panel and backlight source to reduce the chromaticity tolerance and optimize the chromaticity. The optimization method is simple and cannot solve the problem from the root. It is not convenient to intelligently optimize the chromaticity of the display screen, which leaves the LCD screen with further optimization space. Therefore, we need to propose a chromaticity intelligent optimization LCD screen. Utility Model Content

[0006] The purpose of the utility model is to provide a liquid crystal display screen with intelligent chromaticity optimization. Through the design of grayscale adjustment circuit, image processing circuit, color temperature control circuit and backlight brightness adjustment circuit, the color transition and details of the liquid crystal display screen can be improved, the quality of the presented image can be improved by filtering, contrast enhancement and the like, and the color temperature of the display screen can be adjusted, so that the chromaticity optimization scheme of the liquid crystal display screen is more intelligent. Through the above-mentioned circuit, the chromaticity can be freely adjusted and optimized according to the user's preference, so as to improve the accuracy and contrast of the color of the display screen and the overall visual effect, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chromaticity intelligent optimization liquid crystal display screen, including a main control circuit, a full-color driving circuit for adjusting the RGB color output of the liquid crystal display screen, a grayscale adjustment circuit for improving color transition and details, an image processing circuit for improving image quality, a color temperature control circuit for adjusting the color temperature of the display screen, and a backlight brightness adjustment circuit for adjusting the backlight brightness according to changes in ambient light and display content. The full-color driving circuit, grayscale adjustment circuit, image processing circuit, color temperature control circuit, and backlight brightness adjustment circuit are all electrically connected to the main control circuit; the image processing circuit includes a color enhancement circuit and an image signal filtering circuit for improving the contrast of the display screen.

[0008] Preferably, the full-color driving circuit includes a chip U3, a full-color lamp LED_RGB, a transistor Q2 and a transistor Q3, the 2nd pin of the full-color lamp LED_RGB is connected to the 7th pin of the chip U3, the 4th pin of the full-color lamp LED_RGB is connected to the 6th pin of the chip U3, the 6th pin of the full-color lamp LED_RGB is connected to the 5th pin of the chip U3, the 1st pin of the chip U3 is respectively connected to a resistor R17 and a resistor R18, the 2nd pin of the chip U3 is respectively connected to a resistor R19 and a resistor R20, and the 9th pin of the chip U3 is connected to a resistor R1 connected to 5V;

[0009] Pins 1, 3 and 5 of the full-color lamp LED_RGB are connected to the collector of the transistor Q2, a resistor R12 connected to 5V is connected between the base and emitter of the transistor Q2, the emitter of the transistor Q3 is connected to the base of the transistor Q2, a resistor R14 is connected between the base and emitter of the transistor Q3, and a resistor R13 is connected to the base of the transistor Q3.

[0010] Preferably, the grayscale adjustment circuit includes a terminal J73, pin 2 of the terminal J73 is connected to pin 1 of the full-color lamp LED_RGB, and pin 2 of the full-color lamp LED_RGB is connected to a resistor R37, pin 4 of the full-color lamp LED_RGB is connected to a resistor R35, and pin 6 of the full-color lamp LED_RGB is connected to a resistor R36.

[0011] Preferably, the color enhancement circuit includes a chip U30, a capacitor C22 and a resistor R15 are connected between pin 1 and pin 4 of the chip U30, a capacitor C24 is connected between pin 4 and pin 8 of the chip U30, an inductor L3 is connected between pin 5 and pin 6 of the chip U30, a resistor R10 is connected between pin 3 after pin 6 and pin 7 of the chip U30 are connected, one end of the resistor R10 is connected to a capacitor C16 which is grounded and connected to a 5V power supply, a diode D1 is also connected to pin 5 of the chip U30, and one end of the diode D1 is respectively connected to a resistor R5, a resistor R6 and a resistor R11 connected in series, and a capacitor C17 connected in parallel to the resistor R6 and the resistor R11.

[0012] Preferably, the image signal filtering circuit includes an amplifier U1A, a resistor R33 is connected between pin 1 and pin 2 of the amplifier U1A, and a grounded resistor R23 is connected to pin 2 of the amplifier U1A, a capacitor C23 and a grounded resistor R130 are respectively connected to pin 3 of the amplifier U1A, one end of the capacitor C23 is respectively connected to a resistor R53, a capacitor C13 and a resistor R43, and one end of the resistor R43 is connected to pin 1 of the amplifier U1A.

[0013] Preferably, the color temperature control circuit includes a chip U22 and a terminal P1, a diode D10 is connected between pin 1 and pin 5 of the chip U22, an inductor L1 is connected between pin 1 of the chip U22 and pin 2 of the terminal P1, pin 4 of the chip U22 is connected to pin 1 of the terminal P1, and a resistor R35 connected to 12V is connected between pin 4 and pin 5 of the chip U22, pin 2 of the chip U22 is grounded, and pin 3 of the chip U22 is respectively connected to resistors R65 and R95.

[0014] Preferably, the backlight brightness adjustment circuit includes a chip U4 and a terminal J26, an inductor L33 is connected between pin 1 and pin 6 of the chip U4, pin 3 of the terminal J26 is connected to pin 6 of the chip U4, a resistor R42 is connected between pins 1 and 2 of the terminal J26 and pin 4 of the chip U4, and a capacitor C20 connected to a 5V power supply is connected to pin 6 of the chip U4, a diode D11 is connected between pin 1 and pin 5 of the chip U4, one end of the diode D11 is connected to a capacitor C21 and is connected to the positive input end of the full-color lamp LED_RGB, a grounding resistor R27 and a resistor R28 are respectively connected to pin 3 of the chip U4, and pin 3 of the chip U4 is connected to the negative input end of the full-color lamp LED_RGB.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can improve the color transition and details of the liquid crystal display screen through the design of the grayscale adjustment circuit, the image processing circuit, the color temperature control circuit, and the backlight brightness adjustment circuit, improve the quality of the presented image through filtering, contrast enhancement, etc., and can adjust the color temperature of the display screen, so that the color optimization scheme of the liquid crystal display screen is more intelligent, and through the above-mentioned circuit, the color can be freely adjusted and optimized according to the user's preference, thereby improving the accuracy and contrast of the color of the display screen and the overall visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural block diagram of the utility model;

[0018] Figure 2 This is a circuit diagram of the full-color driving circuit of the utility model;

[0019] Figure 3 The circuit diagram of the grayscale adjustment circuit of the utility model;

[0020] Figure 4 A circuit diagram of a color enhancement circuit of the utility model;

[0021] Figure 5 This is a circuit diagram of the image signal filtering circuit of the utility model;

[0022] Figure 6 This is a circuit diagram of the color temperature control circuit of the utility model;

[0023] Figure 7 The utility model is a circuit diagram of the backlight brightness adjustment circuit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7The utility model provides a technical solution: a chromaticity intelligent optimization liquid crystal display screen, including a main control circuit, a full-color driving circuit for adjusting the RGB color output of the liquid crystal display screen, a grayscale adjustment circuit for improving color transition and details, an image processing circuit for improving image quality, a color temperature control circuit for adjusting the color temperature of the display screen, and a backlight brightness adjustment circuit for adjusting the backlight brightness according to changes in ambient light and display content. The full-color driving circuit, grayscale adjustment circuit, image processing circuit, color temperature control circuit, and backlight brightness adjustment circuit are all electrically connected to the main control circuit; the image processing circuit includes a color enhancement circuit and an image signal filtering circuit for improving the contrast of the display screen.

[0026] The full-color driving circuit includes a chip U3, a full-color lamp LED_RGB, a transistor Q2 and a transistor Q3, wherein the 2nd pin of the full-color lamp LED_RGB is connected to the 7th pin of the chip U3, the 4th pin of the full-color lamp LED_RGB is connected to the 6th pin of the chip U3, the 6th pin of the full-color lamp LED_RGB is connected to the 5th pin of the chip U3, the 1st pin of the chip U3 is respectively connected to a resistor R17 and a resistor R18, the 2nd pin of the chip U3 is respectively connected to a resistor R19 and a resistor R20, and the 9th pin of the chip U3 is connected to a resistor R1 connected to 5V;

[0027] Pin 10 of chip U3 is connected to a grounded capacitor C5, and pin 8 of chip U3 is connected to a grounded resistor R2.

[0028] Pins 1, 3 and 5 of the full-color lamp LED_RGB are connected to the collector of the transistor Q2, a resistor R12 connected to 5V is connected between the base and emitter of the transistor Q2, the emitter of the transistor Q3 is connected to the base of the transistor Q2, a resistor R14 is connected between the base and emitter of the transistor Q3, and a resistor R13 is connected to the base of the transistor Q3.

[0029] The grayscale adjustment circuit includes a connection terminal J73, pin 2 of the connection terminal J73 is connected to pin 1 of the full-color lamp LED_RGB, and pin 2 of the full-color lamp LED_RGB is connected to a resistor R37, pin 4 of the full-color lamp LED_RGB is connected to a resistor R35, and pin 6 of the full-color lamp LED_RGB is connected to a resistor R36.

[0030] The color enhancement circuit includes a chip U30, wherein a capacitor C22 and a resistor R15 are connected between pins 1 and 4 of the chip U30, a capacitor C24 is connected between pins 4 and 8 of the chip U30, an inductor L3 is connected between pins 5 and 6 of the chip U30, a resistor R10 is connected between pins 6 and 7 of the chip U30 and pin 3, one end of the resistor R10 is connected to a capacitor C16 which is grounded and connected to a 5V power supply, and a diode D1 is also connected to pin 5 of the chip U30, one end of the diode D1 is respectively connected to a resistor R5, a resistor R6 and a resistor R11 connected in series, and a capacitor C17 connected in parallel to the resistor R6 and the resistor R11.

[0031] The image signal filtering circuit includes an amplifier U1A, a resistor R33 is connected between pins 1 and 2 of the amplifier U1A, and a grounded resistor R23 is connected to pin 2 of the amplifier U1A, a capacitor C23 and a grounded resistor R130 are respectively connected to pin 3 of the amplifier U1A, one end of the capacitor C23 is respectively connected to a resistor R53, a capacitor C13 and a resistor R43, and one end of the resistor R43 is connected to pin 1 of the amplifier U1A. Pin 4 of the amplifier U1A is connected to the negative electrode of the 5V power supply, and pin 8 of the amplifier U1A is connected to the positive electrode of the 5V power supply.

[0032] The color temperature control circuit includes a chip U22 and a terminal P1, a diode D10 is connected between pin 1 and pin 5 of the chip U22, an inductor L1 is connected between pin 1 of the chip U22 and pin 2 of the terminal P1, pin 4 of the chip U22 is connected to pin 1 of the terminal P1, and a resistor R35 connected to 12V is connected between pin 4 and pin 5 of the chip U22, pin 2 of the chip U22 is grounded, and resistors R65 and R95 are respectively connected to pin 3 of the chip U22.

[0033] The color temperature control circuit also includes a chip U33 and a terminal P2, a diode D20 is connected between pin 1 and pin 5 of the chip U33, an inductor L2 is connected between pin 1 of the chip U33 and pin 2 of the terminal P2, pin 4 of the chip U33 is connected to pin 1 of the terminal P2, and a resistor R45 connected to 12V is connected between pin 4 and pin 5 of the chip U33, pin 2 of the chip U33 is grounded, and pin 3 of the chip U33 is respectively connected to resistors R115 and R105.

[0034] The backlight brightness adjustment circuit includes a chip U4 and a terminal J26, an inductor L33 is connected between pin 1 and pin 6 of the chip U4, pin 3 of the terminal J26 is connected to pin 6 of the chip U4, a resistor R42 is connected between pins 1 and 2 of the terminal J26 and pin 4 of the chip U4, and a capacitor C20 connected to a 5V power supply is connected to pin 6 of the chip U4, a diode D11 is connected between pin 1 and pin 5 of the chip U4, one end of the diode D11 is connected to a capacitor C21 and connected to the positive input end of the full-color lamp LED_RGB, a grounding resistor R27 and a resistor R28 are respectively connected to pin 3 of the chip U4, and pin 3 of the chip U4 is connected to the negative input end of the full-color lamp LED_RGB.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Intelligent chromaticity optimization LCD display, characterized by: It includes a main control circuit, a full-color driving circuit for adjusting the RGB color output of a liquid crystal display, a grayscale adjustment circuit for improving color transitions and details, an image processing circuit for improving image quality, a color temperature control circuit for adjusting the color temperature of the display screen, and a backlight brightness adjustment circuit for adjusting the backlight brightness according to changes in ambient light and display content. The full-color driving circuit, grayscale adjustment circuit, image processing circuit, color temperature control circuit, and backlight brightness adjustment circuit are all electrically connected to the main control circuit; the image processing circuit includes a color enhancement circuit and an image signal filtering circuit for improving the contrast of the display screen.

2. The chromaticity intelligent optimization liquid crystal display screen according to claim 1, characterized in that: The full-color driving circuit includes a chip U3, a full-color lamp LED_RGB, a transistor Q2 and a transistor Q3, wherein the pin 2 of the full-color lamp LED_RGB is connected to the pin 7 of the chip U3, the pin 4 of the full-color lamp LED_RGB is connected to the pin 6 of the chip U3, the pin 6 of the full-color lamp LED_RGB is connected to the pin 5 of the chip U3, and the pin 9 of the chip U3 is connected to a resistor R1 connected to 5V; Pins 1, 3 and 5 of the full-color lamp LED_RGB are connected to the collector of the transistor Q2, a resistor R12 connected to 5V is connected between the base and emitter of the transistor Q2, the emitter of the transistor Q3 is connected to the base of the transistor Q2, and a resistor R14 is connected between the base and emitter of the transistor Q3.

3. The chromaticity intelligent optimization liquid crystal display screen according to claim 2, characterized in that: The grayscale adjustment circuit includes a connection terminal J73, pin 2 of the connection terminal J73 is connected to pin 1 of the full-color lamp LED_RGB, and pin 2 of the full-color lamp LED_RGB is connected to a resistor R37, pin 4 of the full-color lamp LED_RGB is connected to a resistor R35, and pin 6 of the full-color lamp LED_RGB is connected to a resistor R36.

4. The chromaticity intelligent optimization liquid crystal display screen according to claim 1, characterized in that: The color enhancement circuit includes a chip U30, a capacitor C22 and a resistor R15 are connected between pins 1 and 4 of the chip U30, a capacitor C24 is connected between pins 4 and 8 of the chip U30, an inductor L3 is connected between pins 5 and 6 of the chip U30, and a diode D1 is also connected to pin 5 of the chip U30, one end of the diode D1 is respectively connected to a resistor R5, a resistor R6 and a resistor R11 connected in series, and a capacitor C17 connected in parallel to the resistor R6 and the resistor R11.

5. The chromaticity intelligent optimization liquid crystal display screen according to claim 1, characterized in that: The image signal filtering circuit includes an amplifier U1A, a resistor R33 is connected between pins 1 and 2 of the amplifier U1A, a capacitor C23 is connected to pins 3 of the amplifier U1A, one end of the capacitor C23 is connected to resistor R53, capacitor C13 and resistor R43, one end of the resistor R43 is connected to pin 1 of the amplifier U1A.

6. The chromaticity intelligent optimization liquid crystal display screen according to claim 1, characterized in that: The color temperature control circuit includes a chip U22 and a terminal P1, a diode D10 is connected between pin 1 and pin 5 of the chip U22, an inductor L1 is connected between pin 1 of the chip U22 and pin 2 of the terminal P1, pin 4 of the chip U22 is connected to pin 1 of the terminal P1, and a resistor R35 connected to 12V is connected between pin 4 and pin 5 of the chip U22.

7. The chromaticity intelligent optimization liquid crystal display screen according to claim 2, characterized in that: The backlight brightness adjustment circuit includes a chip U4 and a terminal J26, an inductor L33 is connected between pin 1 and pin 6 of the chip U4, a resistor R42 is connected between pin 1 and pin 2 of the terminal J26 and pin 4 of the chip U4, a diode D11 is connected between pin 1 and pin 5 of the chip U4, one end of the diode D11 is connected to the positive input end of the full-color lamp LED_RGB, and pin 3 of the chip U4 is connected to the negative input end of the full-color lamp LED_RGB.

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