TWI585470B - A color filter - Google Patents

Description

Color filter

The invention relates to a filter, in particular to a plurality of first openings in the inner frame region of the black matrix, and a plurality of second openings in the outer frame region, wherein the second opening has a smaller area The first aperture color filter.

Liquid crystal displays (LCDs) are now commonly used as a variety of visual image terminal devices, such as outdoor large advertising billboards, desktop computer displays, notebook computer displays, mobile phone displays, electronic photo albums, and the like. The liquid crystal display not only has the advantages of low power consumption and low radiation, but also has the advantages of lightness, shortness and short portability, thus defeating the traditional display and becoming the mainstream trend technology in the display market, compared with the traditional With the help of many benefits, the LCD monitor has become a mainstream technology in the market, and many technicians, inventors, or R&D teams in the industry have slashed a lot of time and money to conduct a lot of research on the quality improvement of LCD monitors. Making liquid crystal display technology a major industry in Taiwan, making liquid crystal display a major export product of Taiwan and bringing many economic benefits to the country, even today's technology in Taiwan's liquid crystal display is still growing rapidly and growing with emerging countries. As well as the increase of display-related products, the Chinese people still have a high degree of enthusiasm for investing in research on liquid crystal display related technologies.

Technically speaking, the liquid crystal display belongs to a passive display device, in which the main components can be basically divided into three parts, which are respectively a backlight module, a liquid crystal panel, and a color filter, in which a backlight module is used. The group provides the light source, and then the red (R), blue (B), and green (G) pixel structures in the color filter are repeatedly arranged to filter the light source to achieve color display on the liquid crystal panel. effect. In color filters, usually a glass substrate, a pixel a layer and a black matrix, the glass substrate is used for carrying, and the three pixel structures of red (R), blue (B), and green (G) in the pixel layer respectively block light transmission of the other three primary colors to generate The role of color display, while the black matrix is to shield the light that does not form the red (R), blue (B), green (G) three pixel structure, while preventing light leakage and materials that prevent the pixel structure For the purpose of mixing, etc., the black matrix shape is mostly a structure including a plurality of frames, and correspondingly in different regions to accommodate different color filter layers.

However, after the liquid crystal display is assembled, the brightness of the partial area at the periphery of the display area may be significantly different from the central part of the display for two reasons: one is generated by the edge after the liquid crystal display and the outer frame are assembled. The oblique image leaks out; another reason is the illusion produced by visual contrast. In the prior art, in order to solve this problem, a color bead between the backlight module and the display panel is disposed on a peripheral area outside the display area to provide color compensation, thereby solving a dark state oblique light leakage at the edge of the panel display area. The problem, which is measured by the optical instrument, can detect the brightness of the light at any point on the display area, which seems to solve the problem caused by the oblique light leakage. However, in fact, when carefully observed with the naked eye, there is still the brightness of the peripheral area of the liquid crystal display. Compared with the brightness of the center of the display area, there is a certain degree of visual difference between the brightness and darkness. In other words, the problem has not been completely eliminated. The problem of seemingly different brightness areas due to the illusion generated by visual contrast still exists. In view of this, for the technological innovation of today's liquid crystal displays, how to develop a color filter to provide a novel liquid crystal display can improve the inconvenience caused by the visual contrast to the users of the liquid crystal display, and is related industries and enterprises. The company cannot ignore one of the important issues at the moment.

A primary object of the present invention is to provide a color filter that harmonizes the visual contrast of the display panel with its periphery while maintaining the same aperture ratio of the first matrix and the aperture ratio of the second matrix.

A primary object of the present invention is to provide a color filter having a plurality of first matrices in an inner frame region of a black matrix, and each of the first matrices has a first black bump and a plurality of first openings. a hole, the outer frame area has a plurality of second matrices, and the first matrix Each has a second black bump and a plurality of second openings, wherein the second opening has a smaller area than the first opening, thereby harmonizing the visual contrast of the display panel with its circumference.

In order to achieve the above-mentioned purpose and effect, the present invention is a color filter comprising a glass substrate, at least one black matrix and a color filter layer, the black matrix having an inner frame region and an outer frame region, and The inner frame region has a plurality of first openings having a smaller number than the plurality of second openings of the outer frame region.

One embodiment of the present invention resides in that the area of the second opening of the outer frame region decreases from the edge of the inner frame region toward the edge of the outer frame region.

An embodiment of the invention resides in that the area of the second opening is proportionally decreasing.

An embodiment of the invention is that the area of the second opening is non-equal proportionally decreasing.

An embodiment of the invention is that the area of the second opening has a decreasing ratio of 10%.

In an embodiment of the invention, when the number of the second openings is greater than 2, the area of each of the second openings is the same.

According to an embodiment of the present invention, the second opening areas in the second matrix are proportionally decreasing.

In an embodiment of the invention, the second opening areas in the second matrix are non-equalized decreasing.

In an embodiment of the invention, the area of the second openings of the second matrix is reduced by 10%.

An embodiment of the invention is that the first opening area is larger than the second openings.

One embodiment of the present invention resides in an area of the first openings in each of the first matrices and an area sum of the second openings in each of the second matrices.

An embodiment of the invention is that the opening ratio of each of the first matrices is the same as the opening ratio of each of the second matrices.

1‧‧‧Color filters

11‧‧‧ glass substrate

13‧‧‧Black matrix layer

131‧‧‧Inner frame area

1311‧‧‧First Matrix

1311a‧‧‧First black bump

1311b‧‧‧First opening

132‧‧‧Outer frame area

1321‧‧‧ second matrix

1321a‧‧‧Second black bump

1321b-i‧‧‧Second opening

15‧‧‧Color filter layer

1 is a perspective view of a color filter according to a first embodiment of the present invention; and FIG. 2 is a cross-sectional view of the color filter A-A' of the first embodiment of the present invention; 3A is a schematic diagram of components of a first matrix of the present invention; FIG. 3B is a schematic diagram of components of a second matrix of the present invention; and FIG. 4 is a first embodiment of the present invention A top view of a black matrix of the present invention; a sixth schematic view showing a black color matrix of the second embodiment of the present invention; BB is a schematic cross-sectional view of a color filter of a second embodiment of the present invention; FIG. 8 is a partial schematic view of a black matrix of a second embodiment of the present invention; A perspective view of a color filter according to a third embodiment of the present invention; a tenth view: a C-C' cross-sectional view of a color filter of a third embodiment of the present invention; A schematic diagram of components of a second matrix of a third embodiment of the present invention; : A plan view of a third embodiment of the black matrix which is based embodiment of the present invention; and FIG XIII: which is a partial schematic view of a black matrix system of the third embodiment of the invention.

In order to provide a better understanding and understanding of the features of the present invention and the efficacies achieved, the preferred embodiments and detailed descriptions are as follows:

In view of the prior art, in addition to the normal display area of the center of the display area, the user can observe that there is another bright area on the peripheral portion of the outer frame of the display area, so that the overall display area has a plurality of different brightness. Area, one of the reasons is that the brightness of the color filter and the display area is poor, so that the viewer feels that the peripheral area of the display area is brighter. The illusion of the present invention, after the black matrix is modified corresponding to the opening of the peripheral portion of the display area, solves the problem that the user visually perceives that the brightness of the periphery of the display area is bright due to the contrast illusion, so that the user can watch The visual brightness perceived by the overall display area of the display can be consistent, thereby eliminating the problem that the periphery of the display area is brighter.

1 and 2 are a perspective view of a color filter according to a first embodiment of the present invention, and a cross-sectional view taken along line A-A' of the color filter of the first embodiment of the present invention; As shown in the figure, the main component in the embodiment includes a glass substrate 11, a black matrix layer 13 and a color filter layer 15, and the black matrix layer 13 includes an inner frame region 131 and an outer frame region 132. There are a plurality of first matrices 1311 in the inner frame area 131, and a plurality of second matrices 1321 in the outer frame area 132.

Please refer to FIG. 3A and FIG. 3B, which are schematic diagrams of components of the first matrix of the present invention, and components of the second matrix of the present invention; as shown in the figure, the present embodiment is to illustrate the first The first matrix 1311 has a first black bump 1311a and a plurality of first openings 1311b, and each second matrix 1321 has a second black. The area of the second opening 1321b-c of the second matrix 1321 is smaller than the area of the first openings 1311b of the first matrix 1311. In addition, each of the first matrix 1311 and the second matrix 1321 in the diagram of the embodiment has four openings, but those having ordinary knowledge in the technical field of the invention should understand each. The number of openings and the shape of the openings in the first matrix 1311 and each of the second matrices 1321 can be arbitrarily designed by the user.

The black matrix layer 13 is disposed on the glass substrate 11 , and the color filter layer 15 is corresponding to the first openings 1311 b of the black matrix layer 13 and the second openings. The hole 1321b is further included on the first opening 1311b and the second opening 1321b, and covers the first black bump 1311a and the second black bump 1321a.

Please refer to the fourth figure, which is a top view of the black matrix of the first embodiment of the present invention; as shown in the figure, the present embodiment is to explain the definition portion of the outer frame region 132 in the entire black matrix, in the black matrix layer 13 The inner frame area 131 and the outer frame area 132 are included, and the inner frame area 131 is at a central portion of the black matrix layer 13, and the outer frame area 132 is at a peripheral portion of the black matrix layer 13, and In this embodiment, the second matrix 1321 is calculated from the periphery to the center by using a black matrix layer 13 to define the outer frame region 132 to define the problem that the corresponding display area in the black matrix layer 13 is too bright and is improved. Area, but in practical applications, for the difference in display size or other design factors, the case is defined as the outer frame area 132 will also change, in other words, the general knowledge in the technical field of the present invention should be It can be understood that the outer frame area 132 referred to in the present case is not limited to the area in which two matrices are calculated from the periphery to the inside as shown in the drawing, but the area of the outer frame area 132 should be defined by the area where the over bright problem exists.

Please refer to the fifth figure, which is a partial schematic view of the black matrix of the present invention. As shown in the figure, the present embodiment is to control the opening area of the black matrix when the light enters the black matrix of the color filter through the backlight module. Limiting the total amount of light when the light passes, first, the opening area of the second matrix 1321 is smaller than the opening area of the first matrix 1311, and each second matrix of the outermost edge of the outer frame area 132 The opening area of the 1321 is smaller than the opening area of the second matrix 1321 adjacent to the first matrix 1311, in other words, the second opening 1321b of the second matrix 1321. The opening area of c is decremented from the edge of the inner frame area 131 toward the edge of the outer frame area 132 according to the opening area of the previous matrix, and wherein the decreasing form can be decremented in an equal proportion.

In addition to the above, the aperture area sum of the previous matrix 1311 is used as a reference, and the area of the apertures in each matrix is decremented in equal proportions, and the manner of decrementing can be adopted in the following manner, according to the first matrix. The area and the reference of the first openings 1311b in the 1311 are used to make the opening area of each of the second matrices 1321 of the outer frame region 132 and the edge from the inner frame region 131 toward the edge of the outer frame region 132. The ratio is decreasing, and in order to achieve the effect of the case, the preferred range of the above-mentioned decreasing ratio is between 5 and 15%, and the effect of 10% is most significant.

As described above, since the frame area outside the display area has a higher brightness in the viewing area than the inner frame area in the display area, the frame area outside the display area that is too bright in this embodiment is in the outer frame. The second matrix 1321 of the region can modify the area of the second openings 1321b-c of the second matrix 1321 to be smaller than the area of the first openings 1311b of the first matrix 1311. The aperture ratio of the second matrix 132 is lowered to suppress the problem that the frame area outside the display area is too bright in visual brightness, so as to achieve a visual brightness perception of the viewer on the overall display area. Can be consistent.

Please refer to the sixth to seventh figures, which are schematic perspective views of a color filter according to a second embodiment of the present invention, and a cross-sectional view of a color filter of the second embodiment of the present invention; FIG. As shown, the present embodiment shows a main component of the second embodiment, comprising a color filter 1 comprising a glass substrate 11, a black matrix layer 13 and a color filter layer 15, and the black matrix layer 13 includes an inner frame area 131 and an outer frame area 132. The inner frame area 131 has a plurality of first matrices 1311, and the outer frame area 132 is provided with a plurality of second matrices 1321, and the glass is provided. The arrangement of the substrate 11 and the color filter layer 15 is the same as that of the first embodiment, and therefore will not be described again.

Referring to FIG. 8 again, it is a partial schematic view of a black matrix according to a second embodiment of the present invention; as shown in the figure, the present embodiment is to describe a form in which the opening is proportionally decremented, which is different from the first embodiment in that The first embodiment performs equal-scale decrement in units of a matrix, and the second embodiment performs equal-scale decrement in units of openings. In other words, the present embodiment adopts the plurality of the second matrices 1321. The two openings 1321b-d are opened from the inner frame region 131 to the outer edge of the outer frame region 132 in equal proportions.

In the form of decreasing opening area, each opening area of the second openings 1321b-d is based on the opening area of the first opening 1311b, and from the edge of the inner frame area 131 to the outer frame area. The edge direction of the 132 is equally reduced, or the opening area of the second openings 1321b-d is based on the opening area of the first opening 1311b, and the inner frame area 131 is self-contained from the inner frame area. The edge of 131 is proportionally decremented toward the edge of the outer frame region 132, and the derating ratio parameter is preferably between 5 and 15% for the effect of the present invention, wherein the effect of 10% is most significant. In addition, although the present embodiment is in the form of a proportionally decreasing form, it should be understood by those having ordinary knowledge in the technical field to which the present invention pertains, and in order to solve the problem that the edge of the display area is too bright, it may be performed by a non-equal-scale decrementing method.

Please refer to the ninth and tenth drawings, which are schematic perspective views of a color filter according to a third embodiment of the present invention, and a C-C' cross-sectional view of the color filter of the third embodiment of the present invention; As shown, the main component of the present embodiment includes a glass substrate 11, a black matrix layer 13 and a color filter layer 15, and the black matrix layer 13 includes an inner frame region 131 and an outer frame region. 132. The inner frame area 131 has a plurality of first matrices 1311, and the outer frame area 132 has a plurality of second matrices 1321, and the glass substrate and the color filter layer are the same as the first embodiment. The arrangement of the second embodiment will not be described again.

Referring to FIG. 11 , which is a schematic diagram of components of a second matrix according to a third embodiment of the present invention; as shown in the figure, the present embodiment is to describe the second matrix 1321 in this embodiment compared to the previous implementation. The second matrix 1321 of the example is different in that the second openings 1321b-i of the second matrix 1321 are more than the first openings 1311 of the first matrix 1311, and the second matrices 1321 The opening area is the same as the opening area of the first matrix 1311. However, in the embodiment, the second matrix 1321 is cut into eight rectangular openings, and is arranged in a 2×4 matrix. However, in order to achieve the technical effect of the present invention, the openings of the second matrix are not limited to the present case. The form shown by the formula should be understood by a person having ordinary skill in the art as long as the shape of the opening is arbitrarily modified, the number of openings is increased or decreased, or the position of the opening is rearranged as long as the aperture ratio of the second matrix 1321 is kept constant. In order to achieve the contrast illusion of brightness, it is still within the scope of the case.

Referring to FIG. 12, which is a plan view of a black matrix according to a third embodiment of the present invention; as shown in the figure, the present embodiment is to illustrate the range of the outer frame region in the entire black matrix layer 13, although the outer frame region 132 is As shown in the figure, the two second matrices 1321 are inwardly calculated from the periphery of the black matrix layer 13 as the outer frame region 132. However, the outer frame region 132 is not limited thereto, but should be caused by an area having a problem of excessive brightness. The area of the outer frame area 132 is defined.

Referring to FIG. 13 , which is a partial schematic view of a black matrix according to a third embodiment of the present invention; as shown in the figure, the embodiment is to explain the difference between the openings of the second matrix and the foregoing embodiment. The opening of the second matrix 1321 is the same as the opening area of the first matrix 1311. The second opening 1321b-i of the second matrix 1321 is re-modified. In this embodiment, the single opening is reduced. The size of the area and the number of openings are increased, and the opening areas of the first openings 1311b of the first matrix 1311 and the opening areas of the second openings 1321b-i of the second matrix 1321 are the same, and then rearranged. The arrangement of the second openings 1321b-i in the second matrix 1321, in turn, through the change of the contrast area to achieve the brightness contrast illusion will produce a brighter area at the periphery of the display area, so that the user is viewing the display area Time It does not produce a visual feeling that the periphery of the display area has a brighter area, and achieves the effect of making the brightness of the overall display area uniform. In addition, in the embodiment, the second matrix shows that each second matrix has a similar shape, the same number, and the same arrangement, but the corresponding comparison is performed according to each second matrix of the outer frame area. The illusion influencing factors are different. Therefore, each second matrix 1321 in the outer frame region 132 can also be used for the modification of the opening shape, the increase or decrease in the number of openings, or the change in the arrangement of the openings for the respective second matrix for the factors generated by the contrast illusion.

In summary, the present invention is a color filter comprising a glass substrate, a black matrix and a color filter layer, wherein the black matrix includes an inner frame region and an outer frame region, wherein the inner frame region is a plurality of first matrices, wherein the first matrices have a plurality of first openings, and the outer frame region has a plurality of second matrices, and the second matrices have a plurality of second openings, the black a matrix is disposed on the glass substrate, the color filter layer is disposed in the black matrix, and the second openings of the second matrix are smaller than the first openings of the first matrix, and Further, the second matrix or the second openings in the outer frame area are equally reduced, so as to eliminate the problem of uneven brightness caused by the illusion of brightness contrast in the peripheral portion of the display area of the panel, and the present invention also provides a In the case of maintaining the aperture ratios of the first matrix and the second matrices, modifying the shape, the number, and the arrangement of the second openings of the outer frame region to eliminate the brightness and darkness caused by the illusion of brightness contrast in the peripheral portion of the panel display region Both issues.

Therefore, the present invention is indeed an invention that is novel, progressive, and available for industrial use. It should be in accordance with the requirements of the patent application of the patent law of China. Undoubtedly, the invention patent application is filed according to law, and the prayer bureau will grant the patent as soon as possible. sense.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims of the present invention are equally changed. Modifications are intended to be included in the scope of the patent application of the present invention.

1‧‧‧Color filters

11‧‧‧ glass substrate

13‧‧‧Black matrix layer

1311‧‧‧First Matrix

1321‧‧‧ second matrix

15‧‧‧Color filter layer

Claims (3)

A color filter comprising: a glass substrate; a black matrix layer disposed on the glass substrate, comprising: an inner frame region, the inner frame region having a plurality of first matrices, and the first matrix Having a first black bump and a plurality of first openings; and an outer frame region having a plurality of second matrices, wherein the second matrices have a second black bump and a plurality of a second opening, wherein the number of the first openings is smaller than the second openings; and a color filter layer is disposed on the glass substrate, and the first openings, and the second In the hole. The color filter of claim 1, wherein an area of the first openings in each of the first matrices is the same as an area of the second openings in each of the second matrices. . The color filter of claim 1, wherein an opening ratio of each of the first matrices is the same as an opening ratio of each of the second matrices.