Cholesterol liquid crystal panel and color film substrate thereof

Abstract

The utility model discloses a cholesterol liquid crystal panel and a color film substrate thereof, a common electrode layer on the color film substrate is designed to be a plurality of common electrode units which are arranged in an array mode, a preset gap is reserved between every two adjacent common electrode units, and every two adjacent common electrode units are connected through an electrode connecting structure. Each common electrode unit is arranged corresponding to one pixel electrode, and a gap between two adjacent common electrodes is arranged corresponding to a gate line or a source line, so that the common electrodes avoid the gate line and the source line on the array substrate through the gap between the units, potential change caused by local parasitic capacitance is reduced, and uniform display of the panel is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cholesteric liquid crystal technical field, especially a kind of cholesteric liquid crystal panel and its color film substrate. BACKGROUND

[0002] All LCD screens on the market at present, array substrate (ARRAY) and color film (CF) substrate are bonded with sealant, liquid crystal is injected between two substrates to form liquid crystal cell.According to the characteristics of liquid crystal, electric field is formed between two plates to achieve the purpose of display finally.Driving circuit including pixel electrode is formed on array substrate, common electrode is formed on color film substrate, and in order to save cost, common electrode is whole surface metal oxide (ITO) layer on color film substrate.

[0003] As the common electrode of all pixels, its potential remains unchanged in theory is the most ideal.However, since the common electrode on the color film side is whole surface film layer, parasitic capacitance is generated between large-area scan line and data line (Source Line and Gate Line) on array substrate outside display area.When higher driving voltage needs to be input in cholesteric liquid crystal panel display, potential change caused by this parasitic capacitance has great influence on display effect, causes obvious mura phenomenon around, and there is obvious trace in vision. SUMMARY

[0004] To solve the technical problems in the background art, the utility model provides a kind of cholesteric liquid crystal panel and its color film substrate.

[0005] The utility model provides a kind of color film substrate of cholesteric liquid crystal panel, it includes: first substrate body;

[0006] First substrate body is equipped with common electrode layer, common electrode layer includes the multiple common electrode units of array arrangement, and the interval pre-set gap between adjacent two common electrode units and is connected by electrode connecting structure between two.

[0007] Preferably, every common electrode unit is equipped with the gap for corresponding thin film transistor.

[0008] Preferably, the width of connecting structure between adjacent two common electrode units is equal.

[0009] The utility model further provides a kind of cholesteric liquid crystal panel, including the color film substrate of above-mentioned cholesteric liquid crystal panel.

[0010] Preferably, it further includes: array substrate;

[0011] The array substrate includes a second substrate body, on which a pixel electrode layer is provided. The pixel electrode layer includes multiple source lines, multiple gate lines and multiple pixel electrode units. The multiple source lines and multiple gate lines are arranged in a cross pattern to form multiple accommodating regions distributed in an array. Each pixel electrode unit is located in one of the accommodating regions, and each pixel electrode unit is connected to adjacent gate lines and source lines through a thin film transistor.

[0012] Each common electrode unit is arranged in relation to a pixel electrode unit, and the gap between two adjacent common electrode units is arranged in relation to the gate line or source line.

[0013] Preferably, the projection of each pixel electrode unit onto the array substrate is located within the corresponding common electrode unit.

[0014] Preferably, the shape of the common electrode unit is the same as that of the pixel electrode unit.

[0015] Preferably, the lengths of the common electrode unit and the pixel electrode unit along the gate line direction are W1 and w1, respectively, and the lengths of the common electrode unit and the pixel electrode unit along the source line direction are W2 and w2, respectively, where W1 > w1 and W2 > w2.

[0016] In this invention, the proposed cholesterol liquid crystal panel and its color filter substrate are designed with a common electrode layer on the color filter substrate arranged in an array of multiple common electrode units. Adjacent common electrode units are spaced apart by a predetermined gap and connected by an electrode connection structure. Each common electrode unit corresponds to a pixel electrode, and the gap between adjacent common electrodes corresponds to a gate line or source line. This allows the common electrodes to avoid the gate lines and source lines on the array substrate through the gaps between units, reducing potential changes caused by local parasitic capacitance and thus ensuring uniform panel display. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the color filter substrate of a cholesterol liquid crystal panel proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of a single common electrode unit in one embodiment of a color filter substrate for a cholesterol liquid crystal panel proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of one embodiment of a cholesterol liquid crystal panel proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of a single pixel electrode unit on an array substrate, which is one embodiment of a cholesterol liquid crystal panel proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the array substrate of one embodiment of a cholesterol liquid crystal panel proposed in this utility model. Detailed Implementation

[0022] Reference Figure 1 and 2 The present invention proposes a color filter substrate for a cholesterol liquid crystal panel, comprising: a first substrate body 1;

[0023] The first substrate body 1 is provided with a common electrode layer, which includes a plurality of common electrode units 11 arranged in an array. Two adjacent common electrode units 11 are spaced apart by a preset gap and are connected to each other by an electrode connection structure 12.

[0024] To explain the color filter substrate of this embodiment in detail, refer to... Figures 3-5 This embodiment also proposes a cholesteric liquid crystal panel, including the color filter substrate of the above-mentioned cholesteric liquid crystal panel. Specifically, it further includes: an array substrate;

[0025] The array substrate includes a second substrate body 2, on which a pixel electrode layer is provided. The pixel electrode layer includes multiple source lines 21, multiple gate lines 22 and multiple pixel electrode units 23. The multiple source lines 21 and multiple gate lines 22 are arranged in a cross pattern to form multiple accommodating regions distributed in an array. Each pixel electrode unit 23 is located in one of the accommodating regions, and each pixel electrode unit 23 is connected to the adjacent gate line 22 and source line 21 through a thin film transistor 3.

[0026] During the assembly of the liquid crystal panel, the array substrate and the color filter substrate are arranged correspondingly, and each common electrode unit 11 is arranged correspondingly to one pixel electrode unit 23. The gap between two adjacent common electrode units 11 is arranged correspondingly to the gate line 22 or the source line 21. Cholesterol liquid crystal 100 is filled between the two substrates, and the edges are fixed with sealant. During operation, a vertical electric field is generated between the common electrode unit and the corresponding pixel electrode unit. According to the driving signal sent to the pixel electrode unit by the gate line and the source line on the array substrate, the helical structure of the cholesterol liquid crystal molecules changes, thereby switching between bright and dark states.

[0027] In this embodiment, the proposed cholesterol liquid crystal panel and its color filter substrate are designed with a common electrode layer on the color filter substrate arranged in an array of multiple common electrode units. Adjacent common electrode units are spaced apart by a predetermined gap and connected by an electrode connection structure. Each common electrode unit corresponds to a pixel electrode, and the gap between adjacent common electrodes corresponds to a gate line or source line. This allows the common electrodes to avoid the gate lines and source lines on the array substrate through the gaps between units, reducing potential changes caused by local parasitic capacitance and ensuring uniform panel display.

[0028] In a specific embodiment, each common electrode unit 11 is provided with a clearance notch for corresponding thin-film transistor 3. This avoids parasitic capacitance generated between the common electrode and the thin-film transistor.

[0029] In the specific design of the common electrode unit, the width of the connection structure between two adjacent common electrode units 11 is equal. In actual design, the size of a single pixel in the array template is 100-400μm. In this case, in order to ensure the reliability of the connection between two adjacent common electrode units, the width of the connection structure is preferably 5-10μm.

[0030] To ensure optimal liquid crystal display performance within each pixel, in this specific embodiment, the projection of each pixel electrode unit 23 onto the array substrate is located within its corresponding common electrode unit 11. The common electrode unit should be located within the display area, avoiding areas with signals such as gate lines, source lines, and ESD points, retaining only the sealed area and other areas. In a specific design, the common electrode unit 11 has the same shape as the pixel electrode unit 23.

[0031] Although the size of the common electrode unit is equal to that of the corresponding pixel electrode unit, reducing the area of ​​the common electrode facing the gate line and source line minimizes the parasitic capacitance. However, during the assembly of the color filter substrate and the array substrate, assembly errors cause misalignment between the electrode units of the upper and lower substrates, preventing the common electrode unit from completely covering the pixel electrode unit and thus affecting the vertical electric field on both sides of the liquid crystal. Therefore, in the actual design, the lengths of the common electrode unit 11 and the pixel electrode unit 23 along the gate line 22 are W1 and w1, respectively, and the lengths of the common electrode unit 11 and the pixel electrode unit 23 along the source line 21 are W2 and w2, respectively, with W1 > w1 and W2 > w2. This ensures that the length and width of the common electrode unit are both greater than the corresponding pixel electrode unit, so that the common electrode unit can still cover the pixel electrode unit even with assembly errors. When the size of a single pixel in the array template is 100-400μm, 0 < W1 - w1 < 12μm, 0 < W2 - w2 < 12μm.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A color filter substrate for a cholesterol liquid crystal panel, characterized in that, include: The first substrate body (1); The first substrate body (1) is provided with a common electrode layer, which includes a plurality of common electrode units (11) arranged in an array. Two adjacent common electrode units (11) are spaced apart by a preset gap and are connected by an electrode connection structure (12).

2. The color filter substrate of the cholesterol liquid crystal panel according to claim 1, characterized in that, Each common electrode unit (11) has a clearance notch for the corresponding thin-film transistor (3).

3. The color filter substrate of the cholesterol liquid crystal panel according to claim 1, characterized in that, The connection structure between two adjacent common electrode units (11) has the same width.

4. A cholesterol-based liquid crystal panel, characterized in that, Including the color filter substrate of the cholesterol liquid crystal panel according to any one of claims 1-3.

5. The cholesterol liquid crystal panel according to claim 4, characterized in that, Also includes: Array substrate; The array substrate includes a second substrate body (2), on which a pixel electrode layer is provided. The pixel electrode layer includes multiple source lines (21), multiple gate lines (22) and multiple pixel electrode units (23). The multiple source lines (21) and multiple gate lines (22) are arranged in a cross pattern to form multiple accommodating regions distributed in an array. Each pixel electrode unit (23) is located in one of the accommodating regions, and each pixel electrode unit (23) is connected to the adjacent gate line (22) and source line (21) through a thin film transistor (3). Each common electrode unit (11) is arranged in correspondence with a pixel electrode unit (23), and the gap between two adjacent common electrode units (11) is arranged in correspondence with the gate line (22) or the source line (21).

6. The cholesterol liquid crystal panel according to claim 5, characterized in that, The projection of each pixel electrode unit (23) on the array substrate is located within the corresponding common electrode unit (11).

7. The cholesterol liquid crystal panel according to claim 6, characterized in that, The shape of the common electrode unit (11) is the same as that of the pixel electrode unit (23).

8. The cholesterol liquid crystal panel according to claim 7, characterized in that, The lengths of the common electrode unit (11) and the pixel electrode unit (23) along the gate line (22) are W1 and w1, respectively, and the lengths of the common electrode unit (11) and the pixel electrode unit (23) along the source line (21) are W2 and w2, respectively, with W1 > w1 and W2 > w2.

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