CN117148633A - Color film substrate, display panel and preparation method - Google Patents
Color film substrate, display panel and preparation method Download PDFInfo
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- CN117148633A CN117148633A CN202311228346.2A CN202311228346A CN117148633A CN 117148633 A CN117148633 A CN 117148633A CN 202311228346 A CN202311228346 A CN 202311228346A CN 117148633 A CN117148633 A CN 117148633A
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- 239000000758 substrate Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims abstract description 232
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 6
- 238000004383 yellowing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 230000001788 irregular Effects 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 238000012356 Product development Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13396—Spacers having different sizes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
Abstract
The disclosure provides a color film substrate, a display panel and a preparation method. Specifically, the color film substrate comprises: a color blocking region and a peripheral region surrounding the color blocking region; the special-shaped color film area is positioned in the peripheral area and comprises a first special-shaped color film area close to the color resistance area and a second special-shaped color film area far away from the color resistance area; and the first spacer group and the second spacer group are sequentially arranged in the first special-shaped color film area and the second special-shaped color film area. By adopting the technical scheme, the uniformity of the non-display area and the display area support of the display panel can be ensured, the undesirable risks of light leakage, peripheral blackening, yellowing and the like caused by uneven support can be effectively prevented, the product quality is improved, the development cost and schedule of new products are reduced, and the market competitiveness of the products is improved.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a color film substrate, a display panel and a preparation method.
Background
Spacers, such as Post Spacers (PS) are an important component of liquid crystal display products (Liquid Crystal Display LCD) and mainly serve to support the thickness of the case. Although the characteristics of the spacer such as morphology, size and distribution have an influence on performance, with the development of LCD technology for years, the design mode of the spacer has gradually tended to be mature, and currently, the peripheral area mainly adopts bilateral symmetry and the support density difference of the color resistance area, so as to adapt to the situation that the pixel designs of the peripheral area and the color resistance area are different, and realize the uniformity of the whole support. However, with new product development and cost constraints, existing designs have difficulty meeting the needs of new manufacturing processes for spacers.
Disclosure of Invention
Accordingly, the disclosure is directed to a color film substrate, a display panel and a manufacturing method thereof.
Based on the above object, in a first aspect, the present disclosure provides a color film substrate, including: a color blocking region and a peripheral region surrounding the color blocking region;
the special-shaped color film area is positioned in the peripheral area and comprises a first special-shaped color film area close to the color resistance area and a second special-shaped color film area far away from the color resistance area; and
the first spacer group and the second spacer group are sequentially arranged in the first special-shaped color film area and the second special-shaped color film area.
In a second aspect, based on the same inventive concept, an embodiment of the present disclosure further provides a method for preparing a color film substrate, including:
providing a transparent substrate;
forming a black matrix and a color film layer on the transparent substrate; the color film layer comprises color resistances corresponding to the color resistance areas and special-shaped color films corresponding to the special-shaped color film areas, and the special-shaped color film areas comprise a first special-shaped color film area close to the color resistance areas and a second special-shaped color film area far away from the color resistance areas; and
and forming a spacer layer, wherein the spacer layer comprises a first spacer group and a second spacer group, and the first and second special-shaped color film areas are sequentially arranged.
In a third aspect, based on the same inventive concept, embodiments of the present disclosure further provide a display panel, including the color film substrate described in the embodiments of the first aspect and an array substrate opposite to the color film substrate.
As can be seen from the above, according to the color film substrate, the display panel and the preparation method provided by the present disclosure, for the first special-shaped color film region close to the color resistance region and the second special-shaped color film region far away from the color resistance region on the color film substrate, the first spacer group and the second spacer group are respectively provided, so that the uniformity of supporting the non-display region and the display region of the display panel is ensured, the undesirable risks of light leakage, peripheral blackening, yellowing and the like caused by uneven supporting are effectively prevented, the product quality is improved, the development cost and schedule of new products are reduced, and the market competitiveness of the products is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present disclosure or related art, the drawings required for the embodiments or related art description will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a top view of a display panel according to an embodiment of the disclosure;
FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along line A-A;
fig. 3 is a schematic structural diagram of a color blocking area according to an embodiment of the disclosure;
fig. 4A is a schematic diagram of a color film mask for blocking exposure according to an embodiment of the disclosure;
fig. 4B is a schematic diagram of still another color film mask exposure according to an embodiment of the disclosure;
fig. 4C is a schematic diagram of still another color film mask exposure according to an embodiment of the disclosure;
FIG. 5 is a top view of a perimeter differential spacer design provided by embodiments of the present disclosure;
FIG. 6 is a cross-sectional view of a perimeter differential spacer design provided by embodiments of the present disclosure;
fig. 7A to 7H are scanning electron microscope diagrams of different portions of a color film substrate according to an embodiment of the disclosure.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present disclosure pertains. The terms "first," "second," and the like, as used in embodiments of the present disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Fig. 1 is a top view of a display panel 100 according to an embodiment of the disclosure. The display panel 100 includes a display area 101 and a non-display area surrounding the display area 101. The color resist area 102 is an area of the display panel where color films are disposed, and generally covers the display area 101 and is larger than the display area, so as to ensure the display effect of the display area. Fig. 2 is a schematic cross-sectional view of fig. 1 along line A-A. As can be seen from fig. 2, the display panel includes an array substrate 201, a color film substrate 202, and a liquid crystal layer 203 therebetween. The length of the color blocking area 205 is longer than that of the display area 204 to ensure the display effect. Note that the color films of the color block region 205 generally include a red color film, a green color film, and a blue color film, by which the colors passing through the liquid crystal layer 203 can be changed to the corresponding red, green, and blue colors, thereby enabling formation of colors required for a display screen.
Fig. 3 is a schematic structural diagram of a color blocking area according to an embodiment of the disclosure. The black matrix 301 includes a first stripe extending in the x-axis direction and a second stripe extending in the y-axis direction intersecting the x-axis direction, thereby dividing the color resist region into a plurality of pixel units arranged in an array.
The color film layer may be overlaid on the black matrix 301, for example, a red color film 302, a green color film 303, and a blue color film 304 are sequentially circularly arranged in the x-axis direction. The distance between adjacent color films with different colors is usually very small, so that light rays passing through the pixel units are guaranteed to pass through the color films completely, and the colors of the pixel units are accurately regulated. Optionally, the red color film 302, the green color film 303, and the blue color film 304 are adjacent to each other, so that the gap between the two is reduced, and in particular, the two may be adjacent or overlap.
Referring to fig. 2, since the liquid crystal is filled between the array substrate 201 and the color film substrate 202, in order to ensure the relative position between the two is stable, a spacer is usually disposed on the color film substrate 202, which plays a supporting role. By way of example, the spacers may be Spacer walls (Post Spacer Wall, PSW for short), spacer dams (Post Spacer Bar, PSB for short), spacer dots (Post Spacer Dot, PSD for short). Typically, the spacer walls have a length greater than the spacer dams and points. According to the structural difference of different areas (such as a display area and a non-display area) of the display panel, a targeted spacer design can be performed, and one or more of a spacer wall, a spacer dam and a spacer point are selected and utilized according to requirements so as to realize the uniformity of the whole support.
In view of the fact that the bottom of the spacer is not too small, the spacer in the color block area is usually disposed on the wider one of the two strips of the black matrix 301 and on the color film layer, for example, the strip in the x-axis direction in fig. 3, in order to reduce interference to light. The stripe in the x-axis direction is usually the position where the gate line is located. In some embodiments, the color film of the color blocking area is regular, so that spacers can be respectively arranged on the basis of the color blocking area and the peripheral area surrounding the color blocking area, and the uniformity of the whole support is ensured.
In product development, in order to realize the optimal design of the product, a new color film mask is usually developed for new products with different sizes. However, the cost investment of the new product development stage is high because of the high price of the color film mask,
in order to reduce the development cost of new products, a method of shielding exposure is adopted, and the development of new products with smaller length/width by sharing the color film mask is an effective way of reducing the cost. By way of example, the large-size color film mask plate is partially shielded, and a small-size display panel can be prepared.
When a new product is manufactured by shielding exposure through the common color film mask, in order to ensure the integrity of a film layer in a color resistance area of a preset small-size product, a shielding exposure gray scale area is set in a peripheral area (a large-size mask also has a pixel structure in the area), so that a color film structure exists in a certain peripheral range.
Fig. 4A is a schematic diagram of a color film mask for blocking exposure according to an embodiment of the disclosure. A27.9 inch display panel can be prepared by masking the 43 inch color film with a masking plate 404. The exposure region 401 covers a color resist region set for a 27.9 inch display panel. The distance between the shielding plate 404 and the boundary of the exposure region 401 may be 2.2mm, the width of the shielding exposure gray scale region 402 may be 4.4mm, and the side of the shielding exposure gray scale region 402 away from the exposure region 401 is provided with a cutting line 403. Here, the distance between the shutter 404 and the exposure area 401 may be set according to parameters of the exposure machine.
Fig. 4B is a schematic diagram of still another color film mask for blocking exposure according to an embodiment of the disclosure. A27.9 inch display panel can be prepared by using the 43 inch color film mask plate and utilizing the shielding plate 404 to carry out bilateral shielding. Here, the shielding plate 404 shields about 1/4 of the width from both sides of the long side of the 43-inch color film mask plate. The remaining exposure area 401 covers the color resist area set for the 27.9 inch display panel. The distance between the shielding plate 404 and the boundary of the exposure region 401 may be 2.2mm, the width of both shielding exposure gray scale regions 402 may be 4.4mm, and the side of the shielding exposure gray scale regions 402 away from the exposure region 401 is provided with a cutting line 403. Here, the distance between the shutter 404 and the exposure area 401 may be set according to parameters of the exposure machine.
Fig. 4C is a schematic diagram of still another color film mask for blocking exposure according to an embodiment of the disclosure. A21.5 inch display panel can be prepared by masking the 43 inch color film with three sides shielded by the shielding plate 404. Here, the shielding plate 404 shields about 1/4 width from both sides of the long side of the 43 inch color film mask plate, and shields 1/2 width from the data binding opposite side (Data Pad Opposite, abbreviated as DPO) of the short side. The remaining exposure area 401 covers the 21.5 inch display panel set color resist area. The distance between the shielding plate 404 and the boundary of the exposure region 401 may be 2.2mm, the width of the 3 shielding exposure gray scale regions 402 may be 4.4mm, and the side of the shielding exposure gray scale regions 402 away from the exposure region 401 is provided with a cutting line 403. Here, the distance between the shutter 404 and the exposure area 401 may be set according to parameters of the exposure machine.
As can be seen from fig. 4A to fig. 4C, in each embodiment, the blocked exposure gray area 402 has a pixel structure, which forms a color film when exposed, but the distribution and thickness of the color film structure left over from the periphery are also in an irregular random state, i.e. a special-shaped color film, due to incomplete exposure and randomness of the film layer of the blocked exposure gray area 402. Here, the irregular color film is a random state formed by incomplete exposure generated by the mask exposure, relative to the normal color film, and is an irregular color film.
In combination with the foregoing, the spacer is disposed on the color film, and the randomly distributed color film structure causes irregular bottoms of the spacer, so as to bring a plurality of risks of poor support, such as light leakage, blackening and yellowing of the periphery, to the display panel. In view of this, to avoid the risk of poor support, it is necessary to design the spacer matching the characteristics of the special-shaped color film that obscures the exposure gray area 402.
In order to make the technical scheme of the present disclosure clearer and easier to understand, the color film substrate provided by the present disclosure is described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 5 is a top view of a peripheral differential spacer design provided in an embodiment of the present disclosure. FIG. 6 is a cross-sectional view of a perimeter differential spacer design provided in an embodiment of the present disclosure. Wherein fig. 6 is a sectional view along the length direction of the display area in fig. 5. The object of the spacer design of fig. 5 and 6 is a display panel with single-sided blocked exposure. As shown in fig. 5, the display panel includes a display area, a Data binding side (DP) located above the display area, a Data binding side below, a color resist area left side 505, a gray area right side 504, and an occlusion exposure gray area 501. The shielding exposure gray scale areas 501 and 603 may be formed by shielding a large-size color film mask plate by a shielding plate 607 (as shown in fig. 6).
Referring to fig. 6, the display panel includes a color film substrate 601, an array substrate 602, and a packaging adhesive 606 connecting the two. As can be seen from fig. 6, the display area 604 is located in the color-blocking area 605, and the display color film in the color-blocking area 605 presents a regular form, so that the display effect of the display area 604 can be ensured. The shading exposure gray area 603 is positioned on the right side of the color resistance area 605, and the irregular color film positioned in the area is irregular. Illustratively, the thickness of the special-shaped colored film decreases with increasing distance from the display region 604.
In view of this, in some embodiments, the blocked exposure gray area 501, 603 includes a shaped color film area 502 and a first non-color film area 503 located in a direction in which an axis 506 of the shaped color film area 502 extends, where the first non-color film area 503 does not have a color film structure. Therefore, different spacer groups are adopted for the special-shaped color film region 502 and the first non-color film region 503. It should be noted that each spacer group may include the same or different spacer structures, for example, all spacer points, all spacer walls, all spacer dams, part of spacer points combined with part of spacer walls, and the like. Of course, different spacer groups may be formed by adopting the same spacer structure to perform different arrangements, for example, different spacing distances, different extending directions, and the like. It should be noted that, referring to fig. 5, an axis 506 of the special-shaped color film region 502 is a center line of the special-shaped color film region 502 in a length direction.
Illustratively, the first non-colored film region 503 may employ a primary spacer. Here, the main spacer means that the main spacer is different from the auxiliary spacer in that the height of the main spacer is greater than that of the auxiliary spacer. In addition, the bottom diameter of the main spacer is smaller than the bottom diameter of the auxiliary spacer. Typically, the primary and secondary spacers refer to sub-types of spacer dots. For example, the bottom diameter of the main spacer is 15 μm and the bottom diameter of the auxiliary spacer is 17 μm.
In some embodiments, the shaped colored film region 502 includes a first shaped colored film region 5021 proximate to the color drag region and a second shaped colored film region 5022 distal to the color drag region. The first special-shaped color film region 5021 and the second special-shaped color film region 5022 adopt different spacer groups so as to better adapt to the irregular shape of the special-shaped color film.
The average thickness of the special-shaped color film of the first special-shaped color film region 5021 is larger than that of the special-shaped color film of the second special-shaped color film region 5022, the first special-shaped color film region 5021 adopts an auxiliary spacer, and the second special-shaped color film region 5022 adopts an alternative design of the auxiliary spacer and the main spacer to compensate the thickness difference of the special-shaped color film. For example, the height of the primary spacers is 3.7 μm and the height of the secondary spacers is 3.1 μm.
It should be noted that, the first special-shaped color film region 5021 and the second special-shaped color film region 5022 are only exemplary, and the special-shaped color film region 502 can be divided into more detailed regions and the spacer groups can be respectively arranged. This disclosure is not described in detail.
Due to the existence of the blocked exposure gray scale region 502, partial regions on the left side 505 of the color resistance region and the right side 504 of the gray scale region are symmetrical, and partial regions are asymmetrical. The spacer group on the left side 505 of the color block area may be a spacer wall, a spacer dot, a spacer dam, a combination of a spacer wall and a spacer dot, a combination of a spacer wall and a spacer dam, a combination of a spacer dam and a spacer dot, or the like. The gray area right side 504 is symmetrical to a partial area of the color block area left side 505, and the design of the symmetrical area can be used for the spacer group, which is not further described in the disclosure. For example, referring to fig. 5 and 6, the spacer group on the left side 505 of the color block region is a combination of a spacer wall and a spacer point, and since the region symmetrical to the position of the spacer wall is occupied by the blocked exposure gray scale regions 501, 603, the spacer on the right side 504 of the gray scale region is a spacer point symmetrical to the left side 505 of the color block region.
Optionally, the spacers of the color blocking area include a main spacer and an auxiliary spacer. The number of main spacers in the color-blocking region is illustratively less than the support density of the auxiliary spacers, for example, the support density of the main spacers may be 80-150 μm 2 /mm 2 The supporting density of the auxiliary spacer is 1000-10000 mu m 2 /mm 2 。
The embodiment of the disclosure also provides a scanning electron microscope image of the spacer in different areas of the scheme. Fig. 7A to 7H are scanning electron microscope diagrams of different portions of a color film substrate according to an embodiment of the disclosure. Fig. 7A illustrates a projection angle of the main spacer in the display area (in the color resist area) and a thickness of the color film substrate; FIG. 7B illustrates the protrusion angle of the main spacer on the left side 505 of the color resist region and the thickness of the color film substrate; FIG. 7C illustrates the protrusion angle of the auxiliary spacer and the thickness of the color filter substrate in the display area; FIG. 7D illustrates the protrusion angle of the spacer wall at the left side 505 of the color block region and the thickness of the color film substrate; FIG. 7E shows the protrusion angle of the main spacer on the right side of the gray area (belonging to the second non-color film area) 504 and the thickness of the color film substrate; FIG. 7F illustrates the protrusion angle of the main spacer of the second special-shaped color film region and the thickness of the color film substrate; FIG. 7G illustrates the protrusion angle of the auxiliary spacer and the thickness of the color film substrate in the first special-shaped color film region; fig. 7H shows the protrusion angle of the auxiliary spacer in the second special-shaped color film region and the thickness of the color film substrate. As can be seen from fig. 7A to 7C, the thickness of the region having the color film layer is larger, and the thickness of the region having no color film layer is smaller. The protruding angle of the main spacer is larger than that of the auxiliary spacer. It should be noted that the same spacer structure may have different protrusion angles, which are caused by process errors and are within the allowable range of design errors.
By way of example, the above-described arrangement of the partitions can provide a support density of 6000-18000 μm for the spacers on the left side 505 of the color block region 2 /mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The support density of the spacer on the right side of the color resistance region (comprising the shading exposure gray scale region 501 and the gray scale region right side 504) is 2000-9000 μm 2 /mm 2 The support density of the spacer in the color resistance area is 1000-9000 μm 2 /mm 2 . Such a support density may meet the support uniformity requirements.
Through the arrangement of the isolation pad objects in the subareas, the matching design is carried out between the isolation pad objects in the exposure gray area and the left special-shaped color film, so that the uniformity of the support of the peripheral area and the color resistance area is ensured, the undesirable risks of light leakage, peripheral blackening, yellowing and the like caused by uneven support are effectively prevented, the product quality is improved, the development cost and schedule of new products are reduced, and the market competitiveness of the products is improved.
Some embodiments of the present disclosure further provide a design scheme of the spacer for the exposure-shielding manner shown in fig. 4B. The whole design of fig. 4B is bilaterally symmetrical, and a half width (corresponding to the first special-shaped color film area) of the exposure gray area close to the color resistance area side is shielded as an auxiliary spacer; the half width of the side far away from the color resistance area (corresponding to the second special-shaped color film area) is designed by alternately arranging a main spacer and an auxiliary spacer. It should be noted that the auxiliary spacer and the main spacer are both arranged on the special-shaped color film, so as to compensate the difference of the thickness of the special-shaped color film. The area without color film in the exposure gray area (corresponding to the first non-color film area) is designed as a main spacer, and the area outside the gray area (corresponding to the second non-color film area) is designed symmetrically, such as a spacer wall,The method comprises the steps of spacer points, spacer dams, the combination of spacer walls and spacer points, the combination of spacer walls and spacer dams, the combination of spacer dams and spacer points and the like. At this time, the supporting density of the spacers at the two sides of the color resistance area is 2000-10000 μm 2 /mm 2 The support density of the color resistance area spacer is 1000-9000 mu m 2 /mm 2 . Such a support density may meet the support uniformity requirements.
Some embodiments of the present disclosure further provide a design scheme of the spacer for the exposure-shielding manner shown in fig. 4C. Fig. 4C includes three occlusion exposure gray scale regions, located on the left and right sides and the DPO side, respectively. Half width (corresponding to the first special-shaped color film area) of each shielding exposure gray area close to the color resistance area side is an auxiliary spacer; the half width of the side far away from the color resistance area (corresponding to the second special-shaped color film area) is designed by alternately arranging a main spacer and an auxiliary spacer. It should be noted that the auxiliary spacer and the main spacer are both arranged on the special-shaped color film, so as to compensate the difference of the thickness of the special-shaped color film. The area without color film (corresponding to the first non-color film area) in the exposure gray area is designed as a main spacer. And finally, the left and right residual areas (belonging to the second non-color film area) of the color resistance area are designed by using bilateral symmetry type support, and meanwhile, the areas (belonging to the second non-color film area) outside the DPO side gray level area are designed symmetrically to the standard opposite side PS, so that the disclosure is omitted. The supporting density of the DPO side spacer is 2000-7000 mu m 2 /mm 2 The support density of the DP side spacer is 6000-18000 mu m 2 /mm 2 The support density of the color resistance area spacer is 1000-9000 mu m 2 /mm 2 . Such a support density may meet the support uniformity requirements.
Referring to fig. 5 and 6, an embodiment of the present disclosure further provides a color film substrate, including: a color resist region 605 and a peripheral region surrounding the color resist region 605;
the special-shaped color film region 502 is positioned in the peripheral region and comprises a first special-shaped color film region 5021 close to the color resistance region and a second special-shaped color film region 5022 far away from the color resistance region; and
the first spacer group and the second spacer group are sequentially arranged in the first special-shaped color film region 5021 and the second special-shaped color film region 5022.
By adopting the mode, the special-shaped color film of the first special-shaped color film region 5021 and the second special-shaped color film region 5022 can be better adapted by utilizing the first spacer group and the second spacer group, and the supporting requirement of the display panel can be met.
In some embodiments, the average thickness of the shaped color film located in the first shaped color film region 5021 is greater than the average thickness of the shaped color film located in the second shaped color film region 5022; the average height of the first spacer group is smaller than that of the second spacer group. According to the technical scheme, the special-shaped color film of the first special-shaped color film region 5021 is complementary with the first spacer group, the special-shaped color film of the second special-shaped color film region 5022 is complementary with the second spacer group, and a display panel with uniform support is conveniently obtained.
In some embodiments, the first set of spacers is comprised of a plurality of auxiliary spacers, and the second set of spacers includes a primary spacer and an auxiliary spacer; the height of the main spacer is larger than that of the auxiliary spacer.
In some embodiments, the first special-shaped color film region 5021 and the second special-shaped color film region 5022 have the same length in a direction perpendicular to the axis of the special-shaped color film region. The method for dividing the areas has the advantages of being simple and convenient while meeting the design requirements of the spacer of the special-shaped color film.
In some embodiments, the peripheral region further includes a first non-colored film region 503; the first non-color film region 503 is provided with a third spacer group; the first non-color film region 503 is located in an extending direction of the axis of the special-shaped color film region 502.
In some embodiments, the third group of spacers is comprised of a plurality of primary spacers.
In some embodiments, the peripheral region further includes a second non-color film region (e.g., including a color-blocked region left side 505 adjacent to the color-blocked region 605 and a gray region right side 504 on a side of the shaped color film region away from the color-blocked region); a fourth spacer group is arranged in the second non-color film area; wherein the second non-color film regions 504, 505 comprise two sub-regions symmetrical to each other with respect to the color-blocking region, at least one of the sub-regions being located at a side of the shaped color film region 502 remote from the display region.
Optionally, the fourth spacer group has a symmetrical structure in the subarea.
It should be noted that, depending on the manner of the exposure, the position of the second non-color film region may be different, which will not be described in detail in this disclosure. In some embodiments, referring to fig. 6, a color blocking area 605 is provided with a fifth set of spacers; the color blocking area 605 covers the display area 604.
It should be noted that each spacer group in the present disclosure refers to a spacer combination corresponding to different areas. Different spacer groups may include the same spacer structure, layout, for example, the first non-colored film region and the second non-colored film region may each include a primary spacer. Different spacer structures and layouts can be adopted for different sub-areas of the same area, for example, the left side of the color resistance area in the second non-color film area in fig. 6 includes a spacer wall, and the right side of the gray area does not include a spacer wall.
In some embodiments, the method further comprises a black matrix and a color film layer at least partially overlapping the black matrix; the first spacer group, the second spacer group and the fifth spacer group are arranged on the black matrix and the color film layer.
In some embodiments, the black matrix includes a first stripe and a second stripe that cross each other, and the first spacer group, the second spacer group, and the fifth spacer group are all disposed on the first stripe or an extension line of the first stripe; wherein the first strip has a width greater than a width of the second strip. . Wherein the fifth spacer group is arranged along the position of the first strip; the black matrix of the special-shaped color film area is fully covered, so that the first spacer group and the second spacer group are distributed along the position of the extension line of the first strip.
In some embodiments, the spacer support density of the color resistance region is 1000-9000 μm 2 /mm 2 The method comprises the steps of carrying out a first treatment on the surface of the And, the surrounding area includes one side spacer of the special-shaped color film areaThe support density is 2000-10000 mu m 2 /mm 2 The supporting density of the spacer at one side of the area without the special-shaped color film is 6000-18000 mu m 2 /mm 2 . Exemplary, the spacer support density on the side including the shaped color film region may be 2000-7000 μm 2 /mm 2 、2000～9000μm 2 /mm 2 、2000～10000μm 2 /mm 2 . The spacer support density of one side of the special-shaped color film area is close to that of the display area, and the support uniformity of the whole display panel is guaranteed.
In some embodiments, as shown in fig. 7A-7H, each spacer group includes at least one of a primary spacer, an auxiliary spacer, or a spacer wall; wherein the protrusion angle of the main spacer is greater than 25 °, for example 27.3 °, 28.5 °, 26.5 °, 26.8 °; the protrusion angle of the auxiliary spacer is smaller than 25 degrees and larger than 20 degrees, such as 21.0 degrees and 24.8 degrees; the angle of protrusion of the spacer wall is less than 20 °, for example 19.0 °.
Based on the same inventive concept, the present disclosure also provides a method for manufacturing a color film substrate, corresponding to the color film substrate of any embodiment.
Specifically, referring to fig. 3, 5 and 6, the preparation method of the color film substrate includes:
providing a transparent substrate; here, the transparent substrate is a glass substrate, or may be a resin substrate, which is not limited in the present disclosure;
forming a black matrix 301 and color film layers (302, 303, 304) on the transparent substrate; the color film layer includes color resistances corresponding to the color resistance region 605 and special-shaped color films corresponding to the special-shaped color film regions 502 and 603, and the special-shaped color film region 502 includes a first special-shaped color film region 5021 close to the color resistance region and a second special-shaped color film region 5022 far away from the color resistance region; and
and forming a spacer layer, wherein the spacer layer comprises a first spacer group and a second spacer group, and the first spacer group and the second spacer group are sequentially arranged in a first special-shaped color film area 5021 and a second special-shaped color film area 5022. Alternatively, the spacer layer may be prepared using a bi-tone reticle. It should be noted that, according to the design of the spacer layer, a suitable preparation process may be selected for preparation.
In some embodiments, the forming a black matrix and a color film layer on the transparent substrate specifically includes:
forming the color film layer by using a common color film mask plate in a shielding exposure mode; the preset distance, for example, 2.2mm, exists between the shielding plate 607 for shielding the common color film mask and the set color resistance area.
In some embodiments, the preset distance is determined according to parameters of the exposure machine.
The method of the foregoing embodiment is used to implement the corresponding color film substrate in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, the present disclosure also provides a display panel corresponding to the color film substrate of any of the above embodiments. Specifically, as shown in fig. 6, the display panel includes the color film substrate 601 according to any of the foregoing embodiments and the array substrate 602 opposite to the color film substrate.
Optionally, the display panel is a liquid crystal display panel.
The method of the foregoing embodiment is used to implement the corresponding color film substrate in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined under the idea of the present disclosure, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in details for the sake of brevity.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present disclosure. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present disclosure, and this also accounts for the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform on which the embodiments of the present disclosure are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the embodiments of the disclosure, are intended to be included within the scope of the disclosure.
Claims (16)
1. The utility model provides a various membrane base plate which characterized in that includes:
a color blocking region and a peripheral region surrounding the color blocking region;
the special-shaped color film area is positioned in the peripheral area and comprises a first special-shaped color film area close to the color resistance area and a second special-shaped color film area far away from the color resistance area; and
the first spacer group and the second spacer group are sequentially arranged in the first special-shaped color film area and the second special-shaped color film area.
2. The colored film substrate according to claim 1, wherein the average thickness of the shaped colored film in the first shaped colored film region is greater than the average thickness of the shaped colored film in the second shaped colored film region; the average height of the first spacer group is smaller than that of the second spacer group.
3. The color film substrate according to claim 2, wherein the first spacer group is composed of a plurality of auxiliary spacers, and the second spacer group includes a main spacer and an auxiliary spacer; the height of the main spacer is larger than that of the auxiliary spacer.
4. The colored film substrate of claim 1, wherein the first and second shaped colored film regions have the same length in a direction perpendicular to an axis of the shaped colored film region.
5. The colored film substrate of claim 1, wherein the peripheral region further comprises a first non-colored film region; the first non-color film area is provided with a third spacer group; the first non-color film region is located in the extending direction of the axis of the special-shaped color film region.
6. The color filter substrate according to claim 5, wherein the third spacer group is composed of a plurality of main spacers.
7. The colored film substrate of claim 1, wherein the peripheral region further comprises a second non-colored film region; the second non-color film area is positioned at one side of the special-shaped color film area far away from the color resistance area and/or positioned in an adjacent area of the color resistance area, and a fourth spacer group is arranged in the second non-color film area; the second non-color film region comprises two sub-regions symmetrical relative to the color resistance region, and the fourth spacer group is in a symmetrical structure in the two sub-regions.
8. The color filter substrate according to claim 1, wherein the color block area is provided with a fifth spacer group.
9. The color film substrate according to claim 8, further comprising a black matrix and a color film layer at least partially overlapping the black matrix; the first spacer group, the second spacer group and the fifth spacer group are all arranged on the black matrix and the color film layer.
10. The color film substrate according to claim 9, wherein the black matrix comprises a first stripe and a second stripe intersecting each other, and the first spacer group, the second spacer group, and the fifth spacer group are all disposed on the first stripe or an extension line of the first stripe; wherein the first strip has a width greater than a width of the second strip.
11. The color filter substrate according to claim 1, wherein the spacer support density of the color resist region is 1000-9000 μm 2 /mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The method comprises the steps of,
the supporting density of the spacer at one side of the surrounding area comprising the special-shaped color film area is 2000-10000 mu m 2 /mm 2 The supporting density of the spacer at one side of the area without the special-shaped color film is 6000-18000 mu m 2 /mm 2 。
12. The color film substrate according to any one of claims 1 to 11, wherein each spacer group includes at least one of a main spacer, an auxiliary spacer, or a spacer wall; the protruding angle of the main spacer is larger than 25 degrees, the protruding angle of the auxiliary spacer is smaller than 25 degrees and larger than 20 degrees, and the protruding angle of the spacer wall is smaller than 20 degrees.
13. The preparation method of the color film substrate is characterized by comprising the following steps:
providing a transparent substrate;
forming a black matrix and a color film layer on the transparent substrate; the color film layer comprises color resistances corresponding to the color resistance areas and special-shaped color films corresponding to the special-shaped color film areas, and the special-shaped color film areas comprise a first special-shaped color film area close to the color resistance areas and a second special-shaped color film area far away from the color resistance areas; and
and forming a spacer layer, wherein the spacer layer comprises a first spacer group and a second spacer group, and the first and second special-shaped color film areas are sequentially arranged.
14. The method of claim 13, wherein forming a black matrix and a color film layer on the transparent substrate specifically comprises:
forming the color film layer by using a common color film mask plate in a shielding exposure mode; and a preset distance exists between a shielding plate for shielding the common color film mask plate and the set color resistance area.
15. The method of claim 14, wherein the predetermined distance is determined based on parameters of an exposure machine.
16. A display panel, comprising the color film substrate of any one of claims 1 to 12 and an array substrate opposite to the color film substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311228346.2A CN117148633A (en) | 2023-09-21 | 2023-09-21 | Color film substrate, display panel and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311228346.2A CN117148633A (en) | 2023-09-21 | 2023-09-21 | Color film substrate, display panel and preparation method |
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| CN117148633A true CN117148633A (en) | 2023-12-01 |
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| CN202311228346.2A Pending CN117148633A (en) | 2023-09-21 | 2023-09-21 | Color film substrate, display panel and preparation method |
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| Country | Link |
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| CN (1) | CN117148633A (en) |
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2023
- 2023-09-21 CN CN202311228346.2A patent/CN117148633A/en active Pending
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