CN101916011B - LCD panel - Google Patents

Abstract

The invention relates to a liquid crystal display panel, wherein a design scheme of liquid crystal molecule alignment of the liquid crystal display panel matched with an optical compensation film is disclosed, and the liquid crystal display panel can be suitable for a liquid crystal display panel which adopts left-handed liquid crystal or right-handed liquid crystal as a display medium, wherein the optical properties such as central contrast, visual angle and the like of a display surface of the liquid crystal display panel are improved by adjusting the relative relation between the twist angle of liquid crystal molecules and the light absorption axis of the optical compensation film, so that a good display effect is achieved.

Description

LCD panel

technical field

The present invention relates to a liquid crystal display panel, and in particular to a twisted nematic mode (Twisted Nematic Mode, TN-Mode) liquid crystal display panel. the

Background technique

Liquid crystal is the most important element in liquid crystal display. The liquid crystal material used in the panel will affect the optical properties due to the difference in the basic characteristics of liquid crystal such as optical rotation, operating voltage and operating temperature of liquid crystal. Therefore, the choice of liquid crystal is the primary issue in design. Generally speaking, in Twisted Nematic Mode (TN-Mode) liquid crystal display panels, left-handed liquid crystals are the main choice of liquid crystal materials, but left-handed liquid crystals have their optical limitations and cannot meet the gray scale specified by customers at the same time. Reversing the angle of generation and avoiding the direction of the light output from the panel to the absorption axis of the sunglasses. Therefore, in order to meet the diversified optical needs of customers, the traditional left-handed liquid crystal is no longer enough. Therefore, right-handed liquid crystals are also used in TN-mode liquid crystal display panels. middle. the

In addition, the optical compensation film (optical compensation film) on the LCD panel is designed for the liquid crystal molecules that are not fully standing due to the influence of the upper and lower alignment films in the dark state. However, traditional optical compensation films are designed for left-handed liquid crystals and are not suitable for right-handed liquid crystal structures. As a result, TN-Mode liquid crystal display panels using right-handed liquid crystals exhibit inferior optical properties such as central contrast and viewing angles. TN-Mode liquid crystal display panel based on left-handed liquid crystal. On the other hand, there is still room for improvement in the optical properties of the current left-handed liquid crystal display panel, and the arrangement of the optical compensation film is still not ideal. the

Contents of the invention

The present invention proposes a design scheme for aligning liquid crystal molecules with an optical compensation film, which can be applied to liquid crystal display panels that use left-handed liquid crystals or right-handed liquid crystals as display media. The relative relationship of the liquid crystal display panel is used to improve the optical properties such as center contrast and viewing angle of the display surface of the liquid crystal display panel, so as to achieve a good display effect. the

In order to specifically describe the content of the present invention, a liquid crystal display panel is proposed here, which has a display surface, and the liquid crystal display panel includes an active element array substrate, an opposite substrate, a liquid crystal layer, a first alignment film, a The second alignment film, a first optical compensation film and a second optical compensation film. The opposite substrate is arranged opposite to the active element array substrate. The liquid crystal layer is disposed between the active element array substrate and the opposite substrate, and the liquid crystal layer includes a plurality of liquid crystal molecules. The first alignment film is arranged between the active device array substrate and the liquid crystal layer, and the first alignment film provides a first alignment direction for the liquid crystal molecules. The second alignment film is disposed between the opposite substrate and the liquid crystal layer, and the second alignment film provides a second alignment direction for the liquid crystal molecules. After the projection of the first alignment direction on the display surface is rotated clockwise by an angle of Δθ, it will be opposite to the second alignment direction, and 90°≦Δθ≦100°. The first optical compensation film and the first alignment film are respectively located on opposite sides of the active element array substrate, and the first optical compensation film has a first light absorption axis. The second optical compensation film and the second alignment film are respectively located on opposite sides of the opposite substrate, and the second optical compensation film has a second light absorption axis. Here, the anticlockwise direction is defined as a positive value, and the rotation angle from the positive X-axis rotation on the display surface to the projection of the first alignment direction on the display surface is θ _A , and the anticlockwise rotation from the X-axis positive direction The rotation angle to the projection of the first light absorption axis on the display surface is θ _AE , and Δθ _A =θ _A −θ _AE . In addition, the rotation angle of the anticlockwise rotation from the positive direction of the X axis to the reverse direction of the second alignment direction on the display surface is θ _C , and the rotation angle of the projection of the anticlockwise rotation from the positive direction of the X axis to the second light absorption axis on the display surface is The projection rotation angle is θ _CE , and Δθ _C =θ _C −θ _CE . Then, wherein: at least Δθ _A satisfies 0.5°≤Δθ _A ≤3°, or at least Δθ _C satisfies -3°≤Δθ _C ≤-0.5°.

The present invention further proposes a liquid crystal display panel, which has a display surface, and the liquid crystal display panel includes an active element array substrate, an opposite substrate, a liquid crystal layer, a first alignment film, a second alignment film, and a first alignment film. An optical compensation film and a second optical compensation film. The opposite substrate is arranged opposite to the active element array substrate. The liquid crystal layer is disposed between the active element array substrate and the opposite substrate, and the liquid crystal layer includes a plurality of liquid crystal molecules. The first alignment film is arranged between the active device array substrate and the liquid crystal layer, and the first alignment film provides a first alignment direction for the liquid crystal molecules. The second alignment film is disposed between the opposite substrate and the liquid crystal layer, and the second alignment film provides a second alignment direction for the liquid crystal molecules. After the projection of the first alignment direction on the display surface is rotated counterclockwise by an angle of Δθ, it will be opposite to the second alignment direction, and 90°≦Δθ≦100°. The first optical compensation film and the first alignment film are respectively located on opposite sides of the active element array substrate, and the first optical compensation film has a first light absorption axis. The second optical compensation film and the second alignment film are respectively located on opposite sides of the opposite substrate, and the second optical compensation film has a second light absorption axis. Here, the anticlockwise direction is defined as a positive value, and the rotation angle from the positive X-axis rotation on the display surface to the projection of the first alignment direction on the display surface is θ _A , which is counterclockwise rotation from the X-axis positive direction The rotation angle to the projection of the first light absorption axis on the display surface is θ _AE , and Δθ _A =θ _A −θ _AE . In addition, the rotation angle of the anticlockwise rotation from the positive direction of the X axis to the reverse direction of the second alignment direction on the display surface is θ _C , and the rotation angle of the projection of the anticlockwise rotation from the positive direction of the X axis to the second light absorption axis on the display surface is The projection rotation angle is θ _CE , and Δθ _C =θ _C −θ _CE . Then, at least one of Δθ _A and Δθ _C satisfies the following conditions: at least Δθ _A satisfies -3°≤Δθ _A <0° or, or at least Δθ _C satisfies 0°<Δθ _C ≤3°.

In one embodiment, the liquid crystal display panel further includes a first polarizer and a second polarizer. The first polarizer and the first alignment film are respectively located on opposite sides of the active element array substrate. The second polarizer and the second alignment film are respectively located on opposite sides of the opposite substrate. the

In an embodiment, the first optical compensation film further has a polarizing function. the

In one embodiment, the second optical compensation film further has a polarizing function. the

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings. the

Description of drawings

Fig. 1 illustrates the structure of a kind of TN-mode liquid crystal display panel that this application proposes;

2A and 2B respectively illustrate a left-handed liquid crystal structure and a right-handed liquid crystal structure;

FIG. 3A shows a structure of a known left-handed liquid crystal with an optical compensation film;

FIG. 3B shows a structure of a known right-handed liquid crystal with an optical compensation film;

Figure 4 shows a structure of a right-handed liquid crystal with an optical compensation film proposed according to the present application;

Figure 5 shows the practical application of the design concept of the present invention to improve the technical solution of the structure of right-handed liquid crystal with optical compensation film and its optical performance gain;

Figure 6 shows the practical application of the design concept of the present invention to improve the technical solution of the structure of left-handed liquid crystal with optical compensation film and its optical performance gain;

Figures 7 and 8 show two other practical application of the design concept of this application to improve the structure of right-handed liquid crystal with optical compensation film and its optical performance gain;

9 and 10 respectively show two other technical solutions for improving the structure of left-handed liquid crystal with optical compensation film by actually applying the design concept of the present application, and their optical performance gains. the

Among them, reference signs

100: Liquid crystal display panel 110: Active element array substrate

120: opposite substrate 130: liquid crystal layer

140: The first alignment film 150: The second alignment film

160: The first optical compensation film 170: The second optical compensation film

TFT: Alignment direction on the substrate side of the active element array CF: Alignment direction on the opposite substrate side

Δθ _twist : Liquid crystal twist angle

θ _A : The angle between the alignment direction of the active element array substrate side and the positive direction of the X-axis

θ _AE : The angle between the light absorption axis of the optical compensation film on the side of the active element array substrate and the positive direction of the X-axis

θ _C : The angle between the reverse of the alignment direction on the opposite substrate side and the positive direction of the X-axis

θ _CE : It is the angle between the light absorption axis of the optical compensation film on the opposite side of the substrate and the positive direction of the X-axis

Δθ _A : The angle between the alignment direction of the active element array substrate side and the light absorption axis of the corresponding optical compensation film

Δθ _C : The angle between the opposite of the alignment direction on the opposite substrate side and the light absorption axis of the corresponding optical compensation film

Δθ _ewv : The angle between the light absorption axes of the two optical compensation films

Detailed ways

This application provides a new design specification for the TN-mode liquid crystal display panel to enhance its optical properties. Mainly by changing the relative relationship between the twist angle of the liquid crystal molecules (Twist angle) and the optical compensation film (optical compensation film) to improve the center contrast and large viewing angle contrast of the left-handed or right-handed liquid crystal structure. the

FIG. 1 illustrates the structure of a TN-mode liquid crystal display panel proposed in this application. The liquid crystal display panel 100 includes an active element array substrate 110 , an opposite substrate 120 , a liquid crystal layer 130 , a first alignment film 140 , a second alignment film 150 , a first optical compensation film 160 and a second optical compensation film 170 . The opposite substrate 120 is disposed opposite to the active device array substrate 110 . The liquid crystal layer 130 is disposed between the active device array substrate 110 and the opposite substrate 120 , and the liquid crystal layer 130 includes a plurality of liquid crystal molecules 132 . The first alignment film 140 is disposed between the active device array substrate 110 and the liquid crystal layer 130 . The second alignment film 150 is disposed between the opposite substrate 120 and the liquid crystal layer 130 . The first optical compensation film 160 and the first alignment film 140 are respectively located on opposite sides of the active device array substrate 110 . That is to say, the first alignment film 140 is located on the inner surface of the active device array substrate 110, and the first optical compensation film 160 is located on the outer surface of the active device array substrate 110. The second optical compensation film 170 and the second alignment film 150 are respectively located on opposite sides of the opposite substrate 120 . That is, the second alignment film 150 is located on the inner surface of the opposite substrate 120 , and the second optical compensation film 170 is located on the outer surface of the opposite substrate 120 . The active device array substrate 110 is, for example, a thin film transistor array substrate, and the opposite substrate 120 may include a color filter layer and a common electrode layer. Of course, the active element array substrate 110 can also be a thin film transistor array substrate made by integrating color filters on an active layer (color filter on array, COA), or an active layer on a color filter ( array on color filter (AOC) TFT array substrate, or a black matrix (black matrix, BM) integrated on a TFT array substrate (black matrix onarray, BOA), at this time, the opposite substrate 120 may include a common electrode ( not shown). In addition, the liquid crystal layer 130 may be a left-handed liquid crystal or a right-handed liquid crystal with the arrangement of the first alignment film and the second alignment film 150 . the

First, definitions of left-handed liquid crystals and right-handed liquid crystals will be described. The following figures show that after the active device array substrate 110 and the counter substrate 120 are assembled, they are viewed from the top view direction, that is, viewed from the counter substrate 120 toward the active device array substrate 110. the

For the left-handed liquid crystal structure shown in FIG. 2A, the surface of the drawing is regarded as the display surface of the liquid crystal display panel 100. After the active element array substrate 110 and the counter substrate 120 are assembled, the first alignment film on the active element array substrate 110 side The alignment direction of 140 (marked as TFT in the figure) rotates in the clockwise direction, and first meets the opposite direction of the alignment direction of the second alignment film 150 (marked as CF in the figure) on the opposite substrate 120 side, which is called left-handed liquid crystal architecture. Here, the rotation angle Δθ _twist is defined as the twist angle, and 90°≤Δθ _twist ≤100°.

In addition, for the right-handed liquid crystal structure shown in FIG. 2B, the surface of the drawing is also regarded as the display surface of the liquid crystal display panel 100. After the active element array substrate 110 and the opposite substrate 120 are assembled, the The alignment direction of the first alignment film 140 rotates counterclockwise and first meets the opposite direction of the alignment direction of the second alignment film 150 on the opposite substrate 120 side, which is called a right-handed liquid crystal structure. Here, the rotation angle Δθ _twist is defined as the twist angle, and 90°≤Δθ _twist ≤100°.

In the following, the design of the present application will be described with a right-handed liquid crystal structure. the

FIG. 3A shows a conventional structure of a left-handed liquid crystal with an optical compensation film. FIG. 3B illustrates a conventional structure of a right-handed liquid crystal with an optical compensation film. FIG. 4 shows a structure of a right-handed liquid crystal combined with an optical compensation film according to the present application. The architectures of FIG. 3A , FIG. 3B and FIG. 4 all use the same optical compensation film. Here, the surface of the drawing is regarded as the display surface of the liquid crystal display panel, and the positive direction of the X-axis on the display surface is defined as 0 degrees, then θ _A is the alignment direction of the active element array substrate side (the drawing is indicated as TFT) and The angle between the positive direction of the X-axis, θ _AE is the angle between the light absorption axis of the optical compensation film on the active element array substrate side (marked as TFT-EWV in the figure) and the positive direction of the X-axis, and θ _C is the opposite substrate The angle between the reverse direction of the alignment direction (marked as CF in the figure) and the positive direction of the X-axis, θ _CE is the light absorption axis of the optical compensation film on the opposite side of the substrate (marked as CF-EWV in the figure) and X The angle subtended by the positive direction of the axis. Accordingly, the angle between the alignment direction of the active device array substrate and the light absorption axis of the corresponding optical compensation film can be defined as Δθ _A , and Δθ _A =θ _A −θ _AE . In addition, the angle formed by the opposite of the alignment direction on the opposite substrate side and the light absorption axis of the corresponding optical compensation film can be defined as Δθ _C , and Δθ _C =θ _C −θ _CE .

The current structure of right-handed liquid crystal with optical compensation film as shown in FIG. 3B has poor optical performance. The reason is that the optical compensation film is designed for the liquid crystal molecules that are not completely straight due to the influence of the alignment film on the upper and lower sides of the liquid crystal layer in the dark state. It is mainly arranged symmetrically with the liquid crystal molecules in the upper and lower optical compensation films. discotic molecules to compensate the residual retardation at the edge of the liquid crystal layer. Traditional optical compensation films are designed for left-handed liquid crystals, as shown in FIG. 3B, where Δθ _A is about +0.3° (ie, plus 0.3 degrees), and Δθ _C is about -0.3° (ie, minus 0.3 degrees), In order to effectively play the compensation function of the discotic liquid crystal of the optical compensation film. However, when this design rule is applied to the right-handed liquid crystal structure as shown in Figure 3B, the relative relationship between the light absorption axis of the optical compensation film and the corresponding alignment direction is disordered due to the different twisting directions of the liquid crystals, and it cannot be effectively obtained. optical compensation.

The right-handed liquid crystal structure shown in Figure 4 adjusts the liquid crystal twist angle Δθ _twist to change the relative relationship between the alignment direction and the light absorption axis of the optical compensation film, so that the optical compensation film can play a compensation role. More specifically, in this embodiment, the twist angle Δθ _twist of the liquid crystal is increased so that it is greater than the angle Δθ _ewv between the light absorption axes of the corresponding two optical compensation films, or even covers the range of Δθ _ewv , so that the optical compensation The film can play a good compensation function to enhance the optical performance.

The first embodiment - right-handed liquid crystal structure, adjusting the alignment direction of two alignment films at the same time

FIG. 5 shows a practical application of the above-mentioned design concept to improve the technical solution of the structure of right-handed liquid crystal with optical compensation film and its optical performance gain. As shown in Figure 5, in this embodiment, the twist angle Δθ _twist of the right-handed liquid crystal is increased from 88° to 94°, and the alignment directions of the two alignment films are adjusted at the same time, so that the twist angle Δθ _twist of the liquid crystal covers the two optical compensation films. The range of the included angle Δθ _ewv of the light absorption axis. In other words, by increasing the liquid crystal twist angle Δθ _twist from 88° to 94°, the previously defined Δθ _A is adjusted from +1.3° (ie, plus 1.3 degrees) to -1.7° (ie, minus 1.7 degrees), and Δθ _C is adjusted from -1.3° to +1.7°. Through simulation, the contrast values of the display surface when the liquid crystal twist angle Δθ _twist is 88° and 94° can be obtained respectively, and it can be found that when the liquid crystal twist angle Δθ _twist increases to 94°, the central contrast and large viewing angle contrast of the display surface All have significantly improved.

In addition, Table 1 below further lists the simulation results of a plurality of specific liquid crystal twist angles Δθt _wist .

(Table I)

As shown in Table 1 above, the improvement scheme proposed in this embodiment for the structure of the right-handed liquid crystal with the optical compensation film can indeed effectively improve the optical performance of the liquid crystal display panel. Among them, when the liquid crystal twist angle Δθ _twist is greater than 90°, the central contrast and viewing angle performance of the display surface gradually increase with the increase of the liquid crystal twist angle Δθ _twist , and slightly decrease when Δθ _twist is equal to 96.6°.

This embodiment is a structure proposed for a TN-type liquid crystal display panel, so the liquid crystal twist angle Δθ _twist is less than 180°. In addition, according to the simulation results in Table 1 above, the preferred implementation mode of this embodiment:

For the structure of right-handed liquid crystal with optical compensation film, -3°≤Δθ _A <0° or 0°<Δθ _C ≤3°.

Within the above range, the central contrast and viewing angle performance of the display surface are significantly improved compared with the conventional structures. the

The second embodiment - left-handed liquid crystal structure, adjusting the alignment direction of two alignment films at the same time

FIG. 6 shows a practical application of the aforementioned design concept to improve the technical solution of the structure of left-handed liquid crystal with optical compensation film and its optical performance gain. As shown in Figure 6, in this embodiment, the twist angle Δθ _twist of the left-handed liquid crystal is increased from 88° to 94°, and the alignment directions of the two alignment films are adjusted at the same time, so that the twist angle Δθ _twist of the liquid crystal covers the light of the two optical compensation films The range of the included angle Δθ _ewv of the absorption axis. In other words, by increasing the liquid crystal twist angle Δθ _twist from 88° to 94°, the previously defined Δθ _A is adjusted from -0.7° (ie, minus 0.7 degrees) to +2.3° (ie, plus 2.3 degrees), and Δθ _C is adjusted from +0.7° to -2.3°. Through simulation, the contrast values of the display surface when the liquid crystal twist angle Δθ _twist is 88° and 94° can be obtained respectively. It can be found that when the liquid crystal twist angle Δθ _twist increases to 94°, the central contrast and large viewing angle contrast of the display surface All have significantly improved.

In addition, Table 2 below further lists the simulation results of a plurality of specific liquid crystal twist angles Δθ _twist .

(Table II)

As shown in Table 2 above, the improvement scheme proposed in this embodiment for the structure of the left-handed liquid crystal with the optical compensation film can indeed effectively improve the optical performance of the liquid crystal display panel. Among them, when the liquid crystal twist angle Δθ _twist is greater than 90.4°, the central contrast and viewing angle performance of the display surface gradually increase with the increase of the liquid crystal twist angle Δθ _twist , and slightly decrease when the Δθ _twist is equal to 95.4°.

This embodiment is a structure proposed for a TN-type liquid crystal display panel, so the liquid crystal twist angle Δθ _twist has the property of being less than 180°. In addition, according to the simulation results in Table 1 above, the preferred implementation mode of this embodiment:

The structure of left-handed liquid crystal with optical compensation film, 0.5°≤Δθ _A ≤3° or -3°≤Δθ _C ≤-0.5°.

Within the above range, the central contrast and viewing angle performance of the display surface are significantly improved compared with the conventional structures. the

The third embodiment - right-handed liquid crystal structure, only adjust the alignment direction of one side

In the aforementioned first embodiment, the alignment directions of the two alignment films are adjusted simultaneously to change the liquid crystal twist angle Δθ _twist . In fact, it is also possible to change the alignment direction of only one of the alignment films to achieve the same effect.

(A) Fix the alignment direction of the substrate side of the active element array, and adjust the alignment direction of the opposite substrate side:

FIG. 7 shows another practical application of the above-mentioned design concept of the present application to improve the structure of right-handed liquid crystal with optical compensation film and its optical performance gain. Table 3 below lists the simulation results of several specific liquid crystal twist angles Δθ _twist .

(Table 3)

Please refer to Figure 7 and Table 3 above at the same time. The twist angle Δθ _twist of the right-handed liquid crystal is increased from 88° to 92° and 93.3°. Only the alignment direction of the opposite substrate side is adjusted, and Δθ _A is fixed at +0.3° ( That is, plus 0.3 degrees), and Δθ _C changes from -2.3° (that is, minus 2.3 degrees) to +1.7° and +3°, and at this time, Δθ _C is still in the range of 0°<Δθ _C ≤3°, However, the central contrast and viewing angle performance are still significantly improved.

(B) Fix the alignment direction of the opposite substrate side, and adjust the alignment direction of the active element array substrate side:

FIG. 8 shows another technical solution of the present application to improve the structure of a right-handed liquid crystal with an optical compensation film and its optical performance gain by actually applying the aforementioned design concept. Table 4 below lists the simulation results of several specific liquid crystal twist angles Δθ _twist .

(Table 4)

Please refer to Figure 8 and Table 4 above at the same time, increase the twist angle Δθ _twist of the right-handed liquid crystal from 88° to 92° and 93.3°, and only adjust the alignment direction of the active element array substrate side, and Δθ _C is fixed at -0.3° , and Δθ _A changed from +2.3° to -1.7° and -3°, at this time, Δθ _A is still in the range of -3°≤Δθ _A <0°, and the central contrast and viewing angle are still significantly improved.

The fourth embodiment - right-handed liquid crystal structure, only adjust the alignment direction of one side

In the aforementioned second embodiment, the alignment directions of the two alignment films are adjusted simultaneously to change the liquid crystal twist angle Δθ _twist . In fact, it is also possible to change the alignment direction of only one of the alignment films to achieve the same effect.

(A) Fix the alignment direction of the substrate side of the active element array, and adjust the alignment direction of the opposite substrate side:

FIG. 9 shows another technical solution of the present application to improve the structure of left-handed liquid crystal with optical compensation film by applying the above-mentioned design concept and its optical performance gain. Table 5 below lists the simulation results of several specific liquid crystal twist angles Δθ _twist .

(Table 5)

Please refer to Figure 9 and Table 5 at the same time, increase the twist angle Δθ _twist of the left-handed liquid crystal from 88° to 92° and 92.7°, and only adjust the alignment direction of the opposite substrate side, and Δθ _A is fixed at +0.3° (ie , plus 0.3 degrees), and Δθ _C changes from +1.7° to -2.3° (that is, negative 2.3 degrees) and -3°, and Δθ _C is still in the range of -3°≤Δθ _C ≤-0.5° , while the central contrast and perspective performance are still significantly improved.

(B) Fix the alignment direction of the opposite substrate side, and adjust the alignment direction of the active element array substrate side:

FIG. 10 shows another technical solution of the present application to improve the structure of left-handed liquid crystal with optical compensation film and its optical performance gain by actually applying the aforementioned design concept. Table 6 below lists the simulation results of several specific liquid crystal twist angles Δθ _twist .

(Table 6)

Please refer to Figure 10 and Table 6 above at the same time, increase the twist angle Δθ _twist of the left-handed liquid crystal from 88° to 92° and 92.7°, and only adjust the alignment direction of the active element array substrate side, Δθ _C is fixed at -0.3°, However, Δθ _A changes from -1.7° to +2.3° and +3°. At this time, Δθ _A is still in the range of 0.5°≤Δθ _A ≤3°, and the central contrast and viewing angle are still significantly improved.

To sum up, the present invention is designed for left-handed liquid crystals and right-handed liquid crystals with optical compensation films. For right-handed liquid crystals, the design of process parameters and the selection of compensation film angles should comply with: when Δθ _A and Δθ _C When at least one of them satisfies the range of -3°≤Δθ _A <0° or 0°<Δθ _C ≤+3°, it can have better optical performance; for left-handed liquid crystals, process parameter design and compensation film angle selection It should be observed that when at least one of Δθ _A and Δθc satisfies the range of 0.5°≤Δθ _A ≤3° or -3°≤Δθ _C ≤-0.5°, it can have better optical performance.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention. the

Claims (8)

1. a display panels has a display surface, it is characterized in that, this display panels comprises:

One active component array base board;

One subtend substrate is oppositely arranged with this active component array base board;

One liquid crystal layer is disposed between this active component array base board and this subtend substrate, and this liquid crystal layer comprises a plurality of liquid crystal molecules;

One first alignment film is disposed between this active component array base board and this liquid crystal layer, and this first alignment film provides one first alignment direction to these liquid crystal molecules;

One second alignment film; Be disposed between this subtend substrate and this liquid crystal layer; This second alignment film provides one second alignment direction to these liquid crystal molecules; Wherein the projection of this first alignment direction on this display surface is after the Δ θ along rotating an angle clockwise, can be reverse with this second alignment direction, and 90 °≤Δ θ≤100 °;

One first optical compensation films, this first optical compensation films and this first alignment film lay respectively at the relative both sides of this active component array base board, and this first optical compensation films has one first light absorption axle; And

One second optical compensation films, this second optical compensation films and this second alignment film lay respectively at the relative both sides of this subtend substrate, and this second optical compensation films has one second light absorption axle, definition:

Counterclockwise be on the occasion of, by the X axle forward on this display surface be rotated counterclockwise to the anglec of rotation of this projection of first alignment direction on this display surface be θ _A, by this X axle forward be rotated counterclockwise to the anglec of rotation of this projection of first light absorption axle on this display surface be θ _AE, and Δ θ _A= _{θ A}-θ _AE,

By this X axle forward be rotated counterclockwise to the anglec of rotation of the reverse projection on this display surface of this second alignment direction be θ _C, by this X axle forward be rotated counterclockwise to the anglec of rotation of this projection of second light absorption axle on this display surface be θ _CE, and Δ θ _C=θ _C-θ _CE, wherein:

At least Δ θ _ASatisfy 0.5 °≤Δ θ _A≤3 ° or Δ θ at least _CSatisfy-3 °≤Δ θ _C≤-0.5 °.

2. display panels according to claim 1 is characterized in that, more comprises:

One first polaroid, this first polaroid and this first alignment film lay respectively at the relative both sides of this active component array base board; And

One second polaroid, this second polaroid and this second alignment film lay respectively at the relative both sides of this subtend substrate.

3. display panels according to claim 1 is characterized in that, this first optical compensation films has more the polarisation function.

4. display panels according to claim 1 is characterized in that, this second optical compensation films has more the polarisation function.

5. a display panels has a display surface, it is characterized in that, this display panels comprises:

One active component array base board;

One subtend substrate is oppositely arranged with this active component array base board;

One liquid crystal layer is disposed between this active component array base board and this subtend substrate, and this liquid crystal layer comprises a plurality of liquid crystal molecules;

One first alignment film is disposed between this active component array base board and this liquid crystal layer, and this first alignment film provides one first alignment direction to these liquid crystal molecules;

One second alignment film; Be disposed between this subtend substrate and this liquid crystal layer; This second alignment film provides one second alignment direction to these liquid crystal molecules; Wherein this first alignment direction is rotated along counterclockwise after an angle is Δ θ in the projection on this display surface, can be reverse with this second alignment direction, and 90 °≤Δ θ≤100 °;

One first optical compensation films, this first optical compensation films and this first alignment film lay respectively at the relative both sides of this active component array base board, and this first optical compensation films has one first light absorption axle; And

One second optical compensation films, this second optical compensation films and this second alignment film lay respectively at the relative both sides of this subtend substrate, and this second optical compensation films has one second light absorption axle, definition:

Counterclockwise be on the occasion of, by the X axle forward on this display surface be rotated counterclockwise to the anglec of rotation of this projection of first alignment direction on this display surface be θ _A, by this X axle forward be rotated counterclockwise to the anglec of rotation of this projection of first light absorption axle on this display surface be θ _AE, and Δ θ _A=θ _A-θ _AE,

By this X axle forward be rotated counterclockwise to the anglec of rotation of the reverse projection on this display surface of this second alignment direction be θ _C, by this X axle forward be rotated counterclockwise to the anglec of rotation of this projection of second light absorption axle on this display surface be θ _CE, and Δ θ _C=θ _C-θ _CE, wherein:

At least Δ θ _ASatisfy-3 °≤Δ θ _A＜0 °, or Δ θ at least _CSatisfy 0 °＜Δ θ _C≤3 °.

6. display panels according to claim 5 is characterized in that, more comprises:

One first polaroid, this first polaroid and this first alignment film lay respectively at the relative both sides of this active component array base board; And

One second polaroid, this second polaroid and this second alignment film lay respectively at the relative both sides of this subtend substrate.

7. display panels according to claim 5 is characterized in that, this first optical compensation films has more the polarisation function.

8. display panels according to claim 5 is characterized in that, this second optical compensation films has more the polarisation function.

Images