Pixel unit with controllable chromaticity, array substrate and liquid crystal display panel

Abstract

The utility model discloses a chromaticity-controllable pixel unit, an array substrate and a liquid crystal display panel. The pixel unit comprises an RGB color resistance area and a controllable light-transmitting area. The controllable light-transmitting area is arranged on one side of the RGB color resistance area; the RGB color resistance region is electrically connected with a grid scanning line and data through a transistor; the liquid crystal molecular layer in the controllable light-transmitting area is electrically connected with a driving IC and a common electrode of the liquid crystal display panel. And the driving IC applies an electric field to the liquid crystal molecules of the controllable light-transmitting area to control the transmittance of the controllable light-transmitting area. A controllable light-transmitting area is arranged on one side of an RGB color resistance area, a liquid crystal molecular layer in the controllable light-transmitting area is electrically connected with a driving IC and a common electrode of the liquid crystal display panel, and the transmittance of the controllable light-transmitting area is controlled by applying an electric field to liquid crystal molecules of the controllable light-transmitting area. As no triode is arranged in the controllable light-transmitting area, the area can be very small. And the requirements of different scenes on different chromaticity and passing rate can be met by adjusting the area proportion of the control area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of transmittance of liquid crystal display panel, especially to a pixel unit with controllable chromaticity, array substrate and liquid crystal display panel. BACKGROUND

[0002] The chromaticity of the liquid crystal display panel includes color accuracy, color gamut and color depth. The color accuracy refers to the accuracy of color presentation of the display screen, that is, the difference between the screen color and the standard color card, which is usually represented by ΔE. The smaller the ΔE value, the better the screen color accuracy. The color gamut is the color display range that the display screen can present, which is composed of three primary colors red, green and blue. Commonly used color gamut definition standards include sRGB, Adobe RGB, DCI-P3 and NTSC, etc. In the field of LCD liquid crystal modules, NTSC is usually used for measurement. The higher the NTSC value, the wider the color gamut range. The color depth, under the condition of a certain resolution, is the number of color types represented by each pixel in binary form, which is usually represented by bits. It reflects the degree of color richness and delicacy. The higher the color depth, the more color presentations of the pixel points, and the smoother the color transition of the picture.

[0003] At present, the chromaticity range, that is, the NTSC value, of the liquid crystal display panel has been determined at the beginning of the project. The color gamut range remains unchanged after the NTSC value is determined. The larger the color gamut range, the lower the transmittance, which will result in the need to re-open the mold for some scenes that require high transmittance and low color gamut range. At the same time, the low-chromaticity liquid crystal display screen cannot realize high-chromaticity display. SUMMARY

[0004] The existing liquid crystal display panel has fixed chromaticity, and its color gamut range is also fixed, which cannot meet the needs of different scenes for the display requirements of the liquid crystal display screen.

[0005] To solve the above problems, a pixel unit with controllable chromaticity, an array substrate and a liquid crystal display panel are provided. A controllable light transmission area is arranged on one side of the RGB color resistance area, and the liquid crystal molecule layer in the controllable light transmission area is electrically connected with the driving IC and the common electrode of the liquid crystal display panel respectively. The transmittance of the controllable light transmission area is controlled by applying an electric field to the liquid crystal molecules in the controllable light transmission area. Since there is no triode in the controllable light transmission area, the area can be very small. The area ratio of the control area can also be adjusted to meet the needs of different scenes for different chromaticity and transmittance.

[0006] In a first aspect, a pixel unit with controllable chromaticity comprises:

[0007] an RGB color resistance area;

[0008] a controllable light transmission area;

[0009] The controllable light transmission area is arranged on one side of the RGB color resistance area.

[0010] The RGB color resistance region is electrically connected with a gate scanning line and a data line through a transistor;

[0011] The liquid crystal molecule layer in the controllable light transmission region is electrically connected with a driving IC and a common electrode of the liquid crystal display panel respectively;

[0012] The driving IC controls the transmittance of the controllable light transmission region by applying an electric field to the liquid crystal molecules in the controllable light transmission region.

[0013] In a first possible implementation manner of the pixel unit with controllable chromaticity, the RGB color resistance region comprises:

[0014] An R sub-pixel unit, a G sub-pixel unit and a B sub-pixel unit;

[0015] The R sub-pixel unit, the G sub-pixel unit or the B sub-pixel unit comprises:

[0016] A storage capacitor and a transistor;

[0017] The storage capacitor is connected in parallel with the corresponding liquid crystal molecule layer, and a capacitor parallel circuit is formed;

[0018] One end of the capacitor parallel circuit is electrically connected with the drain of the transistor, and the other end is electrically connected with the common electrode;

[0019] The source and the gate of the transistor are electrically connected with a data line and a gate scanning line respectively.

[0020] In a second possible implementation manner of the first possible implementation manner of the utility model, the controllable light transmission region is arranged close to the B sub-pixel unit.

[0021] In a third possible implementation manner of the second possible implementation manner of the utility model, the area of the controllable light transmission region is smaller than the area of the R sub-pixel unit, the G sub-pixel unit or the B sub-pixel unit.

[0022] In a fourth possible implementation manner of the third possible implementation manner of the utility model, when the voltage of the control signal input to the liquid crystal molecule layer of the controllable light transmission region of the driving IC is ±5V, the controllable light transmission region is full light transmission.

[0023] In a second aspect, an array substrate comprises a plurality of the pixel units with controllable chromaticity, and the liquid crystal molecule layer of the controllable light transmission region of each pixel unit is electrically connected with the driving IC.

[0024] In a third aspect, a liquid crystal display panel comprises the array substrate of the second aspect.

[0025] The pixel unit with controllable chroma, array substrate and liquid crystal display panel provided by the utility model have controllable light transmission area arranged on one side of the RGB color resistance area, and the liquid crystal molecule layer in the controllable light transmission area is electrically connected with the driving IC and the common electrode of the liquid crystal display panel, and the transmittance of the controllable light transmission area is controlled by applying electric field to the liquid crystal molecule in the controllable light transmission area. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0027] Figure 1 It is the structural schematic diagram of the pixel unit in the prior art;

[0028] Figure 2 It is the structural schematic diagram of the pixel unit with controllable chroma in the application;

[0029] Figure 3 It is the structural schematic diagram of the array substrate in the application. DETAILED DESCRIPTION

[0030] The technical solutions in the utility model will be described clearly and completely in the following by combining with the drawings in the utility model, and obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the utility model.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] The existing liquid crystal display panel has fixed chroma, and the color gamut range is also fixed, which cannot meet the needs of different scenes for the display requirements of the liquid crystal display screen. Figure 1 , Figure 1 is a structural diagram of a pixel unit in the prior art. RGB is controlled to display individually through a triode, and RGB three color filters form various colors, but the transmittance and chroma range of the display are fixed due to the fixed RGB chroma.

[0036] In view of the above problems, a pixel unit with controllable chroma, an array substrate and a liquid crystal display panel are provided.

[0037] In a first aspect, a pixel unit with controllable chroma is provided, which comprises Figure 2 , Figure 2 is a structural diagram of a pixel unit with controllable chroma in the present application; comprising RGB color filter area, controllable light transmission area (control area); the controllable light transmission area (control area) is arranged on one side of the RGB color filter area; the RGB color filter area is electrically connected with the gate scanning line and the data through the transistor; the liquid crystal molecule layer in the controllable light transmission area (control area) is electrically connected with the driving IC and the common electrode of the liquid crystal display panel respectively; the driving IC controls the transmittance of the controllable light transmission area (control area) by applying an electric field to the liquid crystal molecules in the controllable light transmission area (control area). By arranging the controllable light transmission area (control area) on one side of the RGB color filter area and electrically connecting the liquid crystal molecule layer in the controllable light transmission area (control area) with the driving IC and the common electrode of the liquid crystal display panel respectively, the transmittance of the controllable light transmission area (control area) is controlled by applying an electric field to the liquid crystal molecules in the controllable light transmission area (control area). Because there is no transistor in the controllable light transmission area (control area), the area can be very small. The area ratio of the control area can also be adjusted to meet the needs of different scenes for different chroma and transmittance.

[0038] In the embodiments of the present application, since no transistor is needed, the area of the controllable light transmission area (control area) can be designed according to actual needs, and the driving IC of the display panel directly applies an electric field to the liquid crystal molecules in the controllable light transmission area (control area) to adjust the transmittance.

[0039] When the electric field is applied, the liquid crystal molecule layer of the controllable light transmission area (control area) is equivalent to a liquid crystal capacitor CIc, as shown in Figure 2 and Figure 3 .

[0040] Further, the RGB color resistance area includes an R sub-pixel unit, a G sub-pixel unit and a B sub-pixel unit; the R sub-pixel unit or the G sub-pixel unit or the B sub-pixel unit includes a storage capacitor Cs and a transistor; the storage capacitor Cs is connected in parallel with the corresponding liquid crystal molecule layer, and the liquid crystal molecule layer at this time is equivalent to a liquid crystal capacitor CIc, as shown in Figure 2 and Figure 3 , to form a capacitor parallel circuit; one end of the capacitor parallel circuit is electrically connected to the drain of the transistor, and the other end is electrically connected to the common electrode; the source and the gate of the transistor are electrically connected to the data line (S1, S2, S3) and the gate scanning line (Gn), respectively.

[0041] Preferably, as shown in Figure 2 and Figure 3 , the controllable light transmission area (control area) is arranged close to the B sub-pixel unit.

[0042] Preferably, the area of the controllable light transmission area (control area) is smaller than the area of the R sub-pixel unit or the G sub-pixel unit or the B sub-pixel unit.

[0043] Further, when the voltage of the control signal input by the driving IC to the liquid crystal molecule layer of the controllable light transmission area (control area) is ±5V, the controllable light transmission area (control area) is fully transparent.

[0044] In a second aspect, an array substrate, as shown in Figure 3 , Figure 3 is a structural schematic diagram of an array substrate in the present application. The array substrate includes a plurality of color controllable pixel units of the first aspect, and the liquid crystal molecule layer of the controllable light transmission area (control area) of each pixel unit is electrically connected to the driving IC, respectively.

[0045] In a third aspect, a liquid crystal display panel includes the array substrate of the second aspect.

[0046] The pixel unit, the array substrate and the liquid crystal display panel with controllable chroma are implemented, the controllable light transmission area (control area) is arranged on one side of the RGB color resistance area, the liquid crystal molecule layers in the controllable light transmission area (control area) are respectively electrically connected with the driving IC and the common electrode of the liquid crystal display panel, and the transmittance of the controllable light transmission area (control area) is controlled by applying an electric field to the liquid crystal molecules in the controllable light transmission area (control area). Since there is no triode in the controllable light transmission area (control area), the area can be very small. The area ratio of the control area can also be adjusted to meet the needs of different scenes for different chroma and transmittance.

[0047] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pixel unit with controllable chrominance, characterized in that, The application relates to a color-controllable pixel unit. The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes:

2. The color controllable pixel cell of claim 1, wherein, The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes:

3. The color controllable pixel cell of claim 2, wherein, The RGB color-resistance area includes:

4. The color controllable pixel cell of claim 3, wherein, The RGB color-resistance area includes:

5. The color controllable pixel cell of claim 4, wherein, The RGB color-resistance area includes:

6. An array substrate, characterized by, The RGB color-resistance area includes:

7. A liquid crystal display panel, characterized by comprising: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color-resistance area includes: The RGB color

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