CN103018969B - Liquid crystal display panel and display device - Google Patents

Abstract

The present invention provides a liquid crystal display panel and a display device, wherein the liquid crystal display panel includes: a color filter substrate and an array substrate arranged oppositely, a sealant arranged on the edge of the color filter substrate and the array substrate, a sealant arranged on the edge of the color filter substrate, The effective display pixel area in the center of the film substrate and the array substrate, and the blank area between the sealant and the effective display pixel area, a columnar spacer is arranged in the blank area, and the columnar spacer The height of is a first preset value, the first preset value is equal to the liquid crystal cell thickness of the liquid crystal display panel minus a second preset value, and the second preset value is smaller than a preset threshold. The solution of the present invention can reduce the gap between the columnar spacer and the substrate in the blank area around the display device, improve the supporting effect of the columnar spacer on the substrate, and improve the peripheral light leakage phenomenon.

Description

A liquid crystal display panel and display device

technical field

The invention relates to the field of liquid crystal display technology, in particular to a liquid crystal display panel and a display device.

Background technique

The current ADS (or AD-SDS, ADvanced Super Dimension Switch, advanced super-dimensional field switching technology) liquid crystal display panel products have been widely used because of their excellent performance. However, in the ADS display mode, peripheral light leakage caused by external force pressing or mechanical structure pressure on the panel generally exists, and after the external force is removed, the light leakage phenomenon recovers very slowly or cannot be completely recovered.

Among them, ADS mainly forms a multi-dimensional electric field through the electric field generated by the edge of the slit electrode in the same plane and the electric field generated between the slit electrode layer and the plate electrode layer, so that all oriented liquid crystals between the slit electrodes and directly above the electrodes in the liquid crystal cell Molecules can be rotated, thereby improving the working efficiency of liquid crystal and increasing the light transmission efficiency. Advanced ultra-dimensional field conversion technology can improve the picture quality of TFT-LCD products, and has the advantages of high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low color difference, and no pushMura. .

In view of the above problems, as shown in Figure 1, in the prior art, in the production of the entire panel, the array substrate and the color filter substrate need to be manufactured separately, and then the edges of the color filter substrate and the array substrate are bonded together by the sealant , the liquid crystal is filled in the area sealed by the sealant to realize the production of the liquid crystal display device. However, there is a PS (Post Spacer, columnar spacer) that plays a supporting role in the pixel area used for display and between the pixel area and the sealant. The supporting effect of the columnar spacer (Dummy PS) is weak, especially in the product design with a large surrounding blank area, the phenomenon of peripheral light leakage is more serious. At present, there are many design schemes for the placement pattern and density of the blank area PS around the panel in the product, but the gap (Gap) between the surrounding blank area PS and the opposite substrate is relatively large, so that when the surrounding blank area is subjected to external pressure, the columnar spacer The pad cannot play a supporting role, and the substrate (referring to the color filter substrate and the array substrate) is greatly deformed, which causes a large change in the peripheral gap and liquid crystal orientation, resulting in peripheral light leakage.

Contents of the invention

The technical problem to be solved by the present invention is to provide a liquid crystal display panel and a display device. By strengthening the design of the columnar spacers around the liquid crystal display panel, the gap between the columnar spacers and the substrate in the blank area around the liquid crystal display panel can be reduced. Improve the supporting effect of the columnar spacer on the substrate, improve the peripheral light leakage phenomenon, and improve the picture quality.

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a liquid crystal display panel, comprising: a color filter substrate and an array substrate disposed opposite to each other, a sealant disposed on the edge of the color filter substrate and the array substrate, and disposed on the The effective display pixel area in the center of the color filter substrate and the array substrate, and the blank area between the sealant and the effective display pixel area, a columnar spacer is arranged in the blank area, and the columnar spacer The height of the object is a first preset value, the first preset value is equal to the liquid crystal cell thickness of the liquid crystal display panel minus a second preset value, and the second preset value is smaller than a preset threshold.

Wherein, one end of the columnar spacer is disposed on the color filter substrate, and the other end of the columnar spacer is facing the gate line of the array substrate.

Wherein, a first metal pillow is further arranged on the gate line, and the other end of the columnar spacer is facing the first metal pillow or facing the double-layer or single-layer metal line of the array substrate.

Wherein, the area corresponding to the invalid display sub-pixel in the blank area is also provided with columnar spacers.

Wherein, the array substrate is further provided with a second metal pillow, one end of the columnar spacer provided in the area corresponding to the invalid display sub-pixel is provided on the color filter substrate, and the other end faces the second metal pillow. pillow.

Wherein, the columnar spacers in the blank area are a plurality of columnar spacers arranged side by side.

Wherein, the array substrate is also provided with a third metal pillow, one end of the plurality of columnar spacers arranged side by side is arranged on the color filter substrate, and the other end is facing the third metal pillow or directly facing the third metal pillow. The double-layer or single-layer metal wires of the array substrate.

Wherein, the columnar spacers arranged side by side are divided into multiple groups, and each group is arranged at intervals.

Wherein, the preset threshold is less than 1.0 μm.

Wherein, the columnar spacer is made of elastic material.

An embodiment of the present invention also provides a display device, including the above-mentioned liquid crystal display panel.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above solution, a columnar spacer is provided in the blank area between the effective display pixel area of the color filter substrate and the array substrate and the sealant, the height of the columnar spacer is a first preset value, and the The first preset value is equal to the thickness of the liquid crystal cell of the liquid crystal display panel minus the second preset value, and the second preset value is less than a preset threshold, which can reduce the columnar spacers and substrates in the peripheral area of the liquid crystal display panel The gap between them can improve the supporting effect of the columnar spacer on the substrate, improve the light leakage around the periphery, and improve the picture quality.

Description of drawings

Fig. 1 is a schematic diagram of the design of a columnar spacer that effectively displays the blank area between the pixel area and the sealant in the prior art;

Fig. 2 is a schematic diagram of the design of a columnar spacer that effectively displays the blank area between the pixel area and the sealant of the present invention;

3 is a schematic diagram of a first embodiment of a columnar spacer of the present invention;

4 is a schematic diagram of a second embodiment of the columnar spacer of the present invention;

Fig. 5 is the schematic diagram of the third embodiment that the scheme shown in Fig. 3 and Fig. 4 is combined;

6 is a schematic diagram of a fourth embodiment of a columnar spacer of the present invention;

Fig. 7 is a schematic diagram of a fifth embodiment of the columnar spacer of the present invention;

Fig. 8 is a schematic diagram of the sixth embodiment of the columnar spacer of the present invention;

FIG. 9 is a schematic diagram of the arrangement of columnar spacers at intervals in the scheme shown in FIG. 8 .

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in FIG. 2 , an embodiment of the present invention provides a liquid crystal display panel, including: a color filter substrate 10 and an array substrate 20 disposed opposite to each other, and a sealant 14 disposed on the edges of the color filter substrate 10 and the array substrate 20 . The effective display pixel area in the center of the color filter substrate 10 and the array substrate 20 (the AA area shown in FIG. 8 and FIG. 9 ), and the area between the sealant 14 and the effective display pixel area A blank area (Dummy) (the area between AA' and the sealant 14 shown in FIG. 2 ), in which a columnar spacer (PS) 11 is arranged, and the The height is a first preset value, the first preset value is equal to the liquid crystal cell thickness of the liquid crystal display panel minus a second preset value, and the second preset value is smaller than a preset threshold.

Wherein, the preset threshold is less than 1.0 μm, thereby reducing the gap (Gap) between the columnar spacer PS in the blank area and the substrate, improving the supporting effect of the PS on the substrate, improving peripheral light leakage, and improving image quality.

As shown in FIG. 3 , one end of the columnar spacer 11 is disposed on the color filter substrate 10 , and the other end of the columnar spacer 11 is facing the gate line 12 of the array substrate 20 ; Among them, by increasing the size of the columnar spacers 11 in the blank area, the height of the columnar spacers 11 is increased, and the gap between the columnar spacers 11 and the substrate is reduced. While increasing the size of the columnar spacers 11 to enhance the support strength of the columnar spacers 11 to the substrate, the columnar spacers 11 can be arranged at the grid lines facing the array substrate 20, further reducing the size of the columnar spacers 11. The gap with the substrate, make the width of the gap <1.0um; prevent light leakage around;

Furthermore, without affecting the thickness of the surrounding box, in order to further reduce the gap value, the columnar spacers 11 in the blank area can also be directly contacted with the substrate. This solution also increases the size of the columnar spacers 11. The gap between the columnar spacer 11 and the substrate is reduced, the supporting strength of the columnar spacer 11 to the substrate is strengthened, and light leakage around the periphery is prevented.

As shown in FIG. 4 , a first metal pillow 13 is also arranged on the grid line 12 , and the other end of the columnar spacer 11 is facing the first metal pillow 13 or facing the two sides of the array substrate 20 . layer or single-layer metal wire, so as to reduce the gap between the column spacer 11 and the substrate, so that Gap<1.0um; wherein, the double-layer metal wire is: SD layer (the layer where the data line is located) and the active layer; single layer The metal line is the SD layer.

As shown in FIG. 5 , the solution shown in FIG. 4 above can be combined with the solution shown in FIG. 3 above to further reduce the gap between the column spacer 11 and the substrate.

As shown in Figure 6, the area corresponding to the invalid display sub-pixel (such as blue sub-pixel B, green sub-pixel G, red sub-pixel R) in the blank area (outside the AA area shown in Figure 8 and Figure 9 The pixel area in the blank area) is also provided with columnar spacers 11 .

At the same time, as shown in FIG. 6 , a second metal pillow 15 is arranged on the array substrate, and one end of the columnar spacer 11 arranged in the area corresponding to the invalid display sub-pixel is arranged on the color filter substrate 10 , and the other end is arranged on the color filter substrate 10 . One end is facing the second metal pillow 15; wherein, the second metal pillow 15 may specifically be a reserved grid line, or may include a grid line and a first metal pillow arranged on the grid line; The scheme can also increase the supporting effect of the columnar spacers in the Dummy RGB area; in this implementation scheme, it should be carried out in conjunction with the scheme shown in Figure 3 or Figure 4 above.

As shown in FIG. 8 , on the basis of the embodiment shown in FIG. 2 , the columnar spacers in the blank area are a plurality of columnar spacers arranged side by side.

Further, as shown in FIG. 7 , a third metal pillow is further arranged on the array substrate, one end of the plurality of columnar spacers 11 arranged side by side is arranged on the color filter substrate, and the other end is For the third metal pillow 16, the third metal pillow 16 may be a reserved grid line, or may include a grid line and a first metal pillow arranged on the grid line; The other end of the columnar spacer 11 can also face the double-layer or single-layer metal line of the array substrate; wherein, the double-layer metal line is: the SD layer (the layer where the data line is located) and the active layer; the single-layer The metal line is the SD layer.

As shown in FIG. 9 , the columnar spacers arranged side by side are divided into multiple groups, and each group is arranged at intervals. Fig. 7 is a partial sectional view of Fig. 9, wherein, the third metal pillow 16 is just the area corresponding to the interval, therefore, there is no columnar spacer 11 above it; The third metal pillow 16 is not set in the area; in addition, this scheme can adjust the size and shape of the PS Wall (that is, the columnar spacers arranged side by side) according to the specific TFT step difference, so that the Gap between the PS Wall and the substrate <1.0um . In order not to affect the diffusion of liquid crystals in the surrounding area, PS Wall adopts a discontinuous design, as shown in Figure 9.

In addition, in the above-mentioned various embodiments of the present invention, the columnar spacer 11 is made of elastic material, and when the substrate is squeezed, the restoring force of the columnar spacer 11 makes the influence of the external force on the substrate Can recover quickly.

In addition, an insulating layer 201 may also be provided on the above-mentioned array substrate, and a black matrix 101 may also be provided on the color filter substrate.

In the above-mentioned embodiment of the present invention, by adjusting the size, density and arrangement of the columnar spacer 11, the Gap between the columnar spacer 11 and the substrate is <1.0um, and the columnar spacer 11 can be in direct contact with the substrate. To enhance the support strength of the columnar spacers and prevent light leakage caused by substrate deformation.

The above solutions can effectively prevent the deformation of the substrate from external force through the effect of the peripheral columnar spacers in products with a large sealing area, and at the same time, the deformation caused by external forces can be quickly achieved by virtue of the elastic effect of the columnar spacers. Reply, effectively improve the surrounding light leakage.

In addition, as shown in FIGS. 3-9 , the embodiment of the present invention further provides a display device, including the liquid crystal display panel provided in the above embodiment. The display device may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (8)

1. a display panels, comprise: the color membrane substrates be oppositely arranged and array base palte, be arranged on the sealed plastic box at described color membrane substrates and array base palte edge, be arranged on effective display pixel area at described color membrane substrates and array base palte center, and the white space between described sealed plastic box and described effective display pixel area, it is characterized in that, described white space is provided with cylindrical spacer, the height of described cylindrical spacer is the first preset value, the liquid crystal cell that described first preset value equals described display panels is thick deducts the second preset value, described second preset value is less than a predetermined threshold value, wherein, described predetermined threshold value is less than 1.0 μm, one end of described cylindrical spacer is arranged on described color membrane substrates, another proper grid line to described array base palte of described cylindrical spacer, described grid line is also provided with the first metal pillow, another of described cylindrical spacer is rectified to described first metal pillow or just to bilayer or the single-layer metal line of described array base palte.

2. display panels according to claim 1, is characterized in that, the region that the invalid display sub-pix in described white space is corresponding is also provided with cylindrical spacer.

3. display panels according to claim 2, it is characterized in that, described array base palte is also provided with the second metal pillow, the one end of the cylindrical spacer that the region that described invalid display sub-pix is corresponding is arranged is arranged on described color membrane substrates, and another is rectified described second metal pillow.

4. array base palte according to claim 1, is characterized in that, the cylindrical spacer in described white space is multiple cylindrical spacers be arranged side by side.

5. display panels according to claim 4, it is characterized in that, described array base palte is also provided with the 3rd metal pillow, one end of described multiple cylindrical spacer be arranged side by side is arranged on described color membrane substrates, and another is rectified to described 3rd metal pillow or just to bilayer or the single-layer metal line of described array base palte.

6. display panels according to claim 5, is characterized in that, described in the cylindrical spacer that is arranged side by side be divided into multiple groups, each group of interval is arranged.

7. display panels according to claim 1, is characterized in that, described cylindrical spacer adopts resilient material to make.

8. a display device, is characterized in that, comprises the display panels as described in any one of claim 1-7.