CN100357818C - General-purpose liquid crystal display panel and general-purpose liquid crystal display - Google Patents

Abstract

The light-transmitting area without setting layer is configured on the color filter area, so that the brightness of the liquid crystal display is improved. The light shielding region is configured on the pixel region of the corresponding thin film transistor substrate, so that the color purity requirement can be improved. The two designs can be applied to the liquid crystal display of the notebook computer with larger requirement on the brightness and the liquid crystal display of the desktop computer with larger requirement on the color purity.

Description

General-purpose liquid crystal display panel and general-purpose liquid crystal display

technical field

The invention relates to a liquid crystal display panel and a general-purpose liquid crystal display, in particular to a liquid crystal display which is applicable to notebook computers and desktop computers at the same time.

Background technique

Liquid crystal displays are often used as display devices for portable notebook computers. However, a major problem with such portable notebook computers is power consumption. For a notebook computer user, the longer the battery life, the wider the convenience and efficiency that can be provided. The battery life of a general notebook computer is about three to five hours on average, and some models can even reach seven hours under special conditions. Among the various components of a notebook computer, processors, various chips, hard disks, and liquid crystal displays consume a lot of power.

For liquid crystal displays used in notebook computers, due to the problem of power consumption, high-brightness backlight panels are generally not used to save power consumption. However, such a design method will reduce the brightness of the display. One solution is to reduce the thickness of the color filter film. The principle of this design method is that in addition to filtering light, the color filter film also absorbs light and thus reduces the brightness of the light source. However, when the thickness of the color filter film is reduced, the chromaticity of the color is also reduced. Another solution is to increase the aperture ratio of the pixel, but this method will make the process more complicated and not easy to design.

On the other hand, LCDs can also be used as monitors for desktop computers. At this time, the liquid crystal display will not consider the problem of power consumption, so it directly uses a high-brightness backlight as a light source, and considers increasing the chromaticity of the color filter film. One way to increase chromaticity is to increase the thickness of the color filter film. However, this approach cannot be applied to notebook computers.

Therefore, the same liquid crystal display panel must have a different design when it is applied to a notebook computer or a desktop computer. When manufacturing these two types of LCD panels, when designing and manufacturing LCD panels of the same size, it is necessary to design color filter films of different specifications for the two situations, which cannot achieve the goal of sharing materials.

Contents of the invention

In view of the many problems and shortcomings of the traditional liquid crystal display panel in the above-mentioned background technology, the object of the present invention is to provide a general-purpose liquid crystal display panel, wherein a colorless transparent layer is formed in the region of the color filter film. light area. It can increase the luminance when it is applied to the display of a notebook computer. Moreover, the light-shielding area provided at the end of the thin film transistor can provide high chromaticity, thus satisfying the requirement for color purity of a desktop liquid crystal display.

Another object of the present invention is to provide no additional power during the process of increasing the luminance, so that the power consumption can be kept from increasing.

Another object of the present invention is to provide the same color filter substrate for different types of liquid crystal displays, so as to achieve the purpose of sharing materials.

According to one aspect of the present invention, a general-purpose liquid crystal display panel is provided, comprising: a color filter film substrate, including a plurality of color filter film regions located thereon, wherein each of the color filter film regions corresponds to To a pixel area and each color filter film area has a light-transmitting area of a colorless setting layer; a thin film transistor substrate has a light-shielding area to pass through the light-transmitting area of the colorless setting layer and a liquid crystal layer located between the color filter film substrate and the thin film transistor substrate.

According to another aspect of the present invention, a general liquid crystal display is provided, comprising: a color filter film substrate having a plurality of color filter film areas, each of the color filter film areas corresponds to a pixel area and each There is a light-transmitting region of a colorless setting layer on the color filter film region; a thin-film transistor substrate has a light-shielding region to completely cover or block the light passing through the light-transmitting region of the colorless setting layer a liquid crystal layer, located between the color filter substrate and the thin film transistor substrate; and a backlight, located on one side of the thin film transistor substrate, for providing light source.

Description of drawings

Fig. 1 shows a schematic top view of a configuration of the light-transmitting region of the colorless layer of the present invention on a color filter;

Fig. 2 shows the side structure schematic diagram of the light-transmitting region of the colorless layer of the present invention configured in the manner of Fig. 1;

Figure 3 shows a schematic diagram of a side structure that emphasizes luminance when the color filter of the present invention is provided with a thin film transistor substrate; and

FIG. 4 shows a schematic diagram of a side structure emphasizing chromaticity when the color filter of the present invention is provided with a thin film transistor substrate.

Detailed ways

Some embodiments of the invention are described in detail below. However, the present invention can also be widely practiced in other embodiments than the ones described in detail, and the scope of the present invention is not limited, which is subject to the claims.

Moreover, in order to provide a clearer description and an easier understanding of the present invention, various parts in the drawings have not been drawn according to their relative dimensions, and some dimensions have been exaggerated compared with other relevant dimensions; irrelevant details have not been fully drawn. out, in order to simplify the drawings.

For a general liquid crystal display, less than half of the light emitted from the backlight can reach the user's eyes. Therefore, the brightness of liquid crystal displays is generally not as good as that of traditional cathode ray tube displays. The main reason is that the backlight of the liquid crystal display reaches the user through two glass substrates, liquid crystal molecules, alignment film, polarizing film, and color filters. The main source of reducing the intensity of transmitted light. Therefore, the lower luminance of the liquid crystal display is also to be expected.

To solve such a problem, the simplest solution is to increase the brightness of the backlight, but this will increase power consumption. One of the more important applications of liquid crystal displays is to configure them in portable notebook computers. However, in the case of a notebook computer, because of its movable nature, the power provided by the battery cannot be continuously provided like a desktop computer. Therefore, the traditional way to increase the luminance of the LCD is to reduce the chance of light being filtered; that is, reducing the thickness of the color filter can increase the luminance. However, this approach has many disadvantages. In addition to the complexity of the design of the LCD panel due to different applications, the reduction in the thickness of the color filter will directly reduce the chromaticity of the color. Therefore, other solutions must be provided in terms of luminance for liquid crystal displays used in notebook computers.

The solution provided by the present invention for the liquid crystal display panel used in notebook computers is to provide a light-transmitting area of a colorless layer at the pixel end of the color filter, so that the white light of the backlight does not need to be filtered by the color filter. directly to the user. The area of the light-transmitting region of the colorless layer only needs to make the user feel that the brightness of the display screen is brighter visually. And the thickness of the color filter does not need to be reduced, and the chromaticity of the color is better than the current liquid crystal display used in the notebook computer.

When the liquid crystal display is applied to a desktop computer, since a higher brightness backlight can be provided, the light-transmitting region of the colorless setting layer is not required. It is sufficient to configure a light-shielding region on the other substrate of the liquid crystal display, and the light-shielding region is sufficient to cover the area of the light-transmitting region of the above-mentioned colorless setting layer. The functions that such a liquid crystal display panel can provide can also meet the user's demand for chromaticity.

The liquid crystal display panel of the present invention can be applied to monitors of notebook computers and desktop computers at the same time, so it can be called a general-purpose liquid crystal display panel.

In the present invention, the area of the light-transmitting region of the colorless setting layer should preferably not exceed a quarter of the pixel area. Moreover, the light-transmitting regions of the colorless setting layers of the three colors of the color filter can be designed to have different area sizes; that is, the area of the light-transmitting region of a certain colorless setting layer can be changed for a specific color.

The light-shielding area does not need its own independent design, and can be combined with the thin film transistor process. For example, formed together with metal gates, source/drains, or buslines of thin film transistors. The area of the light-transmitting region of the above-mentioned colorless layer can also be adjusted through the light-shielding region.

The universal liquid crystal display panel of the present invention includes a first substrate, a second substrate, and a liquid crystal layer. A plurality of transistors are included on the first substrate, and a color filter film is included on the second substrate, wherein the color filter film has a plurality of light-transmitting regions with no color setting layer. The liquid crystal layer is located between the first substrate and the second substrate.

The light-transmitting regions of the above-mentioned multiple colorless setting layers are each located in a pixel region. The area of the light-transmitting region of each colorless setting layer is preferably no more than a quarter of its pixel area.

The above color filter film has a red filter film, a green filter film and a blue filter film. The areas of the light-transmitting regions of the above-mentioned plurality of colorless setting layers on the red filter film, the green filter film and the blue filter film can be all the same or different, or the colorless setting layers of the two colors The area of the light-transmitting region is the same. For example, the area of the light-transmitting area of the colorless layer of the red and green filter film pixels is the same, or the area of the light-transmitting area of the colorless layer of the red and blue filter film is the same, or the area of the light-transmitting area of the colorless layer of the red and blue filter film is the same, or the area of the light-transmitting area of the colorless layer of the red and blue filter film The light-transmitting area of the colorless setting layer is the same. The area of the light-transmitting area of the colorless layer of the pixel of the blue filter film may be smaller than the area of the light-transmitting area of the colorless layer of the red filter film or the green filter film. The adjustment of the area of the light-transmitting area of the colorless layer on the filter film of each color level is mainly to allow the liquid crystal display to generate uniform white light.

The light-transmitting regions of the above-mentioned plurality of colorless layers correspond to the plurality of regions of the first substrate and may have a plurality of light-shielding regions. The above-mentioned multiple light-shielding regions can be formed together with the gates of the multiple thin film transistors, or together with the sources/drains of the multiple thin film transistors.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Please refer to FIG. 1 , which shows a schematic top view of the light-transmitting regions of a plurality of color filter films and a plurality of colorless setting layers, wherein the color filter films are also called color setting layers. A general color filter film has filter films of three colors such as red, green and blue. Therefore, in Fig. 1, the red, green and blue color filters are respectively represented by the first color filter film area 20-1, the second color filter film area 20-2 and the third color filter film area 20-3. mirror. However, it does not mean that the first color filter film area 20-1 is red, the second color filter film area 20-2 is green, and the third color filter film area 20-3 is blue. In the present invention, the thickness of the color filter film 20 does not need to be thinner in consideration of brightness. Therefore, a generally normal thickness can be used to provide users with better color purity. Each color filter film area 20 corresponds to a pixel area. Each color filter film region 20 has a light-transmitting region 30 of a colorless setting layer. Each color filter film area 20 is separated from the light-transmitting area 30 of the colorless layer by black matrixes 12 , 14 . Black matrix 12 represents lateral and black matrix 14 represents vertical.

The area of the light-transmitting region 30 of the colorless setting layer is preferably no more than a quarter of the area of the pixel. The areas of the light-transmitting regions 30 of the colorless layer on the color filter film regions 20 of each color can be designed to be the same or different. For example, the area of the light-transmitting region 30 of the colorless setting layer on the red, green and blue pixels can be designed to be all the same, for example, the area of the light-transmitting region 30 of the colorless setting layer is 1/4 of the pixel area One or one-fifth, or any other possible ratio. It can also be that the areas of the light-transmitting regions of the colorless setting layers of the two colors are the same, for example, the areas of the light-transmitting regions 30 of the colorless setting layers on the red and green color filter regions are the same, or the areas of the light-transmitting regions 30 of the colorless setting layers on the red and blue color filter regions are the same, or The areas of the light-transmitting regions 30 of the colorless layer on the color filter area are the same, or the areas of the light-transmitting areas 30 of the colorless layer on the green and blue color filter areas are the same. It is also possible to design the light-transmitting region 30 of the colorless layer to have different areas on the color filter regions 20 of various colors. A better design method is to design the area of the light-transmitting region 30 of the colorless layer to be related to the vision of human eyes. For example, the sensitivity of human eyes to blue light is relatively poor, so the light-transmitting region 30 of the colorless layer on the blue filter film region 20 has a smaller area to provide more blue light to the user. While the human eye is more sensitive to green light, the light-transmitting region 30 of the colorless layer on the green filter film region 20 has a larger area, providing greater luminance to the user.

Fig. 2 shows a schematic view of a section along the direction AA' in Fig. 1 . In FIG. 2 , the color filter film 20 and the black matrix 14 are located on a transparent substrate 10 . The transparent region 30 of the colorless setting layer is located between the two black matrices 14 . Generally, the substrate 10 with the color filter film 20 is called the color filter substrate 10 . In this embodiment, the color filter substrate 10 is also used to distinguish another substrate of the liquid crystal display panel.

Please refer to FIG. 3 , which shows a schematic side view of the liquid crystal display provided with the color filter substrate shown in FIG. 2 . In FIG. 3, the backlight panel 60 provides a flat uniform white backlight. The LCD panel includes a color filter substrate 10 and another substrate 50 . The substrate 50 is generally called a thin film transistor substrate 50 because the substrate 50 has a plurality of thin film transistors on it as a pixel controller of the liquid crystal display, and the bus 54 is used to connect the gates and sources of the transistors. Generally, a passivation layer 52 is provided on the thin film transistor substrate 50 to protect the thin film transistor and the bus 54 . Since there is a light-transmitting region 30 of a colorless layer at the end of the color filter substrate 10, a part of the light emitted from the backlight plate 60 will pass through the light-transmitting region 30 of a colorless layer to reach the eyes of the user, thus increasing the display capacity. brightness. Another part of the light passes through the color filter film area 20, and this part of the light forms the various colors and shapes of the lines. By using the light-transmitting region 30 with no color setting layer, the present invention achieves the effect of increasing brightness without increasing any power consumption.

Please refer to FIG. 4 , which shows a schematic side view of another liquid crystal display provided with the color filter substrate of FIG. 2 . In FIG. 4 , there is a light-shielding region 56 on the TFT substrate 50 to completely shield or partially shield the light passing through the light-transmitting region 30 of the colorless layer. For the liquid crystal display used in desktop computers, this design does not need to use the light-transmitting region 30 of the colorless layer to increase the luminance because there is no limitation of power supply.

The light-shielding area 56 can be made of metal material, or other dielectric materials with good light-shielding effect. One advantage of using metal is that it can be combined with the process of thin film transistors. For example, the light-shielding region 56 can be formed together with the gate, or can be formed together with the bus line 54 or the source/drain. The way to form the light-shielding region 56 can be a general thin film process.

In the present invention, there is no need to additionally provide other power sources for the display, and the luminance of the display can be increased by using the light-transmitting area of the colorless setting layer. And only when considering the color purity without considering whether the power supply is limited, it is also possible to design a light-shielding area corresponding to the light-transmitting area of the colorless layer on the general thin-film transistor substrate, which can be applied to general desktop liquid crystal displays. . That is, in the design of the light-transmitting region of the colorless layer of the present invention, no matter what application the liquid crystal display panel will be used in the future, the color filter substrate of the present invention can be used to achieve the purpose of sharing materials.

For those skilled in the art, although the present invention is explained above with a preferred example, it is not intended to limit the spirit of the present invention. Modifications and similar arrangements made without departing from the spirit and scope of the present invention shall be included in the patent scope of this application, and such scope shall be consistent with the broadest interpretation covering all modifications and similar structures. Therefore, a preferred embodiment of the invention has been set forth above, and various changes can be identified without departing from the spirit and scope of the invention.

Claims (30)

1. A general-purpose liquid crystal display panel, comprising: A color filter film substrate, including a plurality of color filter film regions on it, wherein each of the color filter film regions corresponds to a pixel region and each of the color filter film regions has a colorless The light-transmitting area of the layer; A thin film transistor substrate having a light-shielding region to completely shield or partially shield the light passing through the light-transmitting region of the colorless layer; and A liquid crystal layer is located between the color filter film substrate and the thin film transistor substrate. 2. The general-purpose liquid crystal display panel as claimed in claim 1, wherein the light-transmitting area of each colorless setting layer is located in a corresponding pixel area. 3. The general-purpose liquid crystal display panel as claimed in claim 2, wherein the area of the light-transmitting area of each colorless setting layer is no more than a quarter of the area of the pixel area. 4. The general-purpose LCD panel of claim 2, wherein the color filter film has a red filter film, a green filter film, and a blue filter film. 5. The general-purpose liquid crystal display panel as claimed in claim 4, wherein the light-transmitting regions of the plurality of colorless layers are within the range of the red filter film pixels, green filter film pixels and blue filter film pixels above are the same. 6. The general-purpose liquid crystal display panel as claimed in claim 4, wherein the areas of the light-transmitting regions of the plurality of colorless layers are smaller on the pixels of the blue filter film than on the pixels of the red filter film . 7. The general-purpose liquid crystal display panel as claimed in claim 4, wherein the areas of the light-transmitting regions of the plurality of colorless layers are smaller on the pixels of the blue filter film than on the pixels of the green filter film . 8. The general-purpose liquid crystal display panel as claimed in claim 4, wherein the light-transmitting regions of the plurality of colorless layers are within the range of the red filter film pixels, green filter film pixels and blue filter film pixels are all different, so that the liquid crystal display surface can produce uniform white light. 9. The general-purpose liquid crystal display panel as claimed in claim 1, wherein the light-transmitting area of the colorless setting layer corresponds to a light-shielding area of the first substrate. 10. The general-purpose liquid crystal display panel as claimed in claim 1, wherein the area of the light-transmitting region of each colorless setting layer is no more than a quarter of the area of the pixel region. 11. The general-purpose liquid crystal display panel of claim 1, wherein the color filter film has a red filter film, a green filter film, and a blue filter film. 12. The general-purpose liquid crystal display panel as claimed in claim 11, wherein the light-transmitting regions of the plurality of colorless layers have an area smaller than that of the red filter film pixels, green filter film pixels, and blue filter film pixels. above are the same. 13. The general-purpose liquid crystal display panel as claimed in claim 11, wherein the areas of the light-transmitting regions of the plurality of colorless layers are smaller on the pixels of the blue filter film than on the pixels of the red filter film . 14. The general-purpose liquid crystal display panel as claimed in claim 11, wherein the light-transmitting regions of the plurality of colorless layers are smaller on the blue filter film pixels than on the green filter film pixels . 15. The general-purpose liquid crystal display panel as claimed in claim 11, wherein the light-transmitting regions of the plurality of colorless layers have an area smaller than that of the red filter film pixels, green filter film pixels and blue filter film pixels. are all different, so that the liquid crystal display surface can produce uniform white light. 16. A general liquid crystal display, comprising: A color filter film substrate, having a plurality of color filter film regions, each of the color filter film regions corresponds to a pixel region and each of the color filter film regions has a light-transmitting region of a colorless layer ; A thin film transistor substrate, having a light-shielding region to completely shield or shield part of the light passing through the light-transmitting region of the colorless layer; a liquid crystal layer located between the color filter substrate and the thin film transistor substrate; and A backlight source is located on one side of the thin film transistor substrate for providing light source. 17. The general-purpose liquid crystal display as claimed in claim 16, wherein the light-transmitting area of each colorless setting layer is located in a corresponding pixel area. 18. The general-purpose liquid crystal display as claimed in claim 17, wherein the area of the light-transmitting area of each colorless setting layer does not exceed a quarter of the area of the pixel area. 19. The general-purpose liquid crystal display of claim 17, wherein the color filter film has a red filter film, a green filter film and a blue filter film. 20. The general-purpose liquid crystal display panel as claimed in claim 19, wherein the light-transmitting regions of the plurality of colorless layers have an area smaller than that of the red filter film pixels, green filter film pixels and blue filter film pixels. above are the same. 21. The general-purpose liquid crystal display panel as claimed in claim 19, wherein the light-transmitting regions of the plurality of colorless layers are smaller on the blue filter film pixels than on the red filter film pixels . 22. The general-purpose liquid crystal display panel as claimed in claim 19, wherein the area of the light-transmitting region of the plurality of colorless layers is smaller on the blue filter film pixel than on the green filter film pixel . 23. The general-purpose liquid crystal display panel as claimed in claim 19, wherein the light-transmitting regions of the plurality of colorless layers are within the range of the red filter film pixels, green filter film pixels and blue filter film pixels are all different, so that the liquid crystal display surface can produce uniform white light. 24. The general-purpose liquid crystal display panel as claimed in claim 16, wherein the light-transmitting regions of the plurality of colorless positioning layers correspond to a second light-shielding region of the first substrate. 25. The general-purpose liquid crystal display panel as claimed in claim 24, wherein the area of the light-transmitting region of each colorless setting layer does not exceed a quarter of the area of the pixel region. 26. The general-purpose LCD panel of claim 24, wherein the color filter film has a red filter film, a green filter film and a blue filter film. 27. The general-purpose liquid crystal display panel as claimed in claim 26, wherein the light-transmitting regions of the plurality of colorless layers are within the range of the red filter film pixels, green filter film pixels and blue filter film pixels above are the same. 28. The general-purpose liquid crystal display panel as claimed in claim 26, wherein the area of the light-transmitting region of the plurality of colorless layers is smaller on the blue filter film pixel than on the red filter film pixel . 29. The general-purpose liquid crystal display panel as claimed in claim 26, wherein the light-transmitting regions of the plurality of colorless layers are smaller on the blue filter film pixels than on the green filter film pixels . 30. The general-purpose liquid crystal display panel as claimed in claim 26, wherein the light-transmitting regions of the plurality of colorless layers are within the range of the red filter film pixels, green filter film pixels and blue filter film pixels are all different, so that the liquid crystal display surface can produce uniform white light.