CN110850629A - Color film substrate, display panel and display device - Google Patents
Color film substrate, display panel and display device Download PDFInfo
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- CN110850629A CN110850629A CN201911205459.4A CN201911205459A CN110850629A CN 110850629 A CN110850629 A CN 110850629A CN 201911205459 A CN201911205459 A CN 201911205459A CN 110850629 A CN110850629 A CN 110850629A
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a color film substrate, a display panel and a display device, wherein the color film substrate comprises a substrate; the substrate base plate comprises a display area and a non-display area; a light shielding layer and a color resistance layer positioned on one side of the substrate; a planarization layer is arranged on one side of the color resistance layer, which is far away from the substrate base plate; the display area comprises a plurality of display color resistance units, the display color resistance units comprise a plurality of display color resistance patterns with different colors, and the display color resistance patterns comprise first display color resistance patterns; the non-display area comprises a plurality of dummy color resistance units, each dummy color resistance unit comprises at least one dummy color resistance pattern, and each dummy color resistance pattern comprises a first dummy color resistance pattern; the color of the first display color resistance pattern is the same as that of the first dummy color resistance pattern; the thickness of the first dummy color resistance pattern is smaller than that of the first display color resistance pattern along the direction vertical to the plane of the substrate base plate. The invention improves the phenomenon of yellowing of the periphery and improves the yield by improving the box thickness difference between the display area and the non-display area.
Description
Technical Field
The embodiment of the invention relates to the technical field of display panels, in particular to a color film substrate, a display panel and a display device.
Background
With the development of technology, liquid crystal display devices are widely used in mobile terminals such as car video players or tablet computers. The liquid crystal display panel realizes Color display by a Color Filter (CF) substrate.
The color film substrate mainly comprises a substrate, a shading layer arranged on the substrate, a color resistance layer and a planarization layer. At present, a large area of dummy color resistors are often required to be arranged in the peripheral area of the color film substrate to arrange the support pillars, and the light shielding layer in the peripheral area of the color film substrate is fully covered. However, the planarization layer is difficult to fill and level for a long distance, so that the cell thickness of the peripheral area is high, the display periphery of the liquid crystal display panel is yellow, and the display quality is poor.
Disclosure of Invention
The invention provides a color film substrate, which aims to solve the problem that the display periphery of a liquid crystal display panel is yellow and improve the display quality.
In a first aspect, an embodiment of the present invention provides a color film substrate, including:
a substrate base plate; the substrate comprises a display area and a non-display area surrounding the display area;
the light shielding layer and the color resistance layer are positioned on one side of the substrate; the light shielding layer positioned in the display area is provided with an opening structure; the color resistance layer comprises a plurality of color resistance patterns with different colors; the orthographic projection of the color resistance pattern positioned in the display area on the substrate completely covers the orthographic projection of the opening structure of the light shielding layer on the substrate, and the color resistance pattern positioned in the non-display area is arranged on one side of the light shielding layer, which is far away from the substrate;
a planarization layer is further arranged on one side, away from the substrate, of the color resistance layer;
the display area comprises a plurality of display color resistance units, each display color resistance unit comprises a plurality of display color resistance patterns with different colors, and the plurality of display color resistance patterns comprise first display color resistance patterns; the non-display area comprises a plurality of dummy color resistance units, each dummy color resistance unit comprises at least one dummy color resistance pattern, and the at least one dummy color resistance pattern comprises a first dummy color resistance pattern;
the color of the first display color resistance pattern is the same as that of the first dummy color resistance pattern; and in the direction perpendicular to the plane of the substrate base plate, the thickness of the first dummy color resistance pattern is smaller than that of the first display color resistance pattern.
In a second aspect, an embodiment of the present invention further provides a display panel, including:
the color film substrate;
the array substrate is arranged opposite to the color film substrate;
the supporting column is positioned between the array substrate and the color film substrate; and the orthographic projection of the support column on the array substrate is positioned in the orthographic projection of the shading layer in the color film substrate on the array substrate.
In a third aspect, an embodiment of the present invention further provides a display device, including: the display panel is provided.
The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a substrate, a light shielding layer and a color resistance layer are arranged in a display area and a non-display area of the substrate, and the color resistance layer comprises a plurality of color resistance patterns with different colors; the shading layer positioned in the display area is provided with an opening structure, the color resistance pattern positioned in the display area covers the opening structure of the shading layer, and the color resistance pattern positioned in the non-display area is positioned on one side of the shading layer, which is far away from the substrate; besides, a planarization layer is arranged on one side of the color resistance layer, which is far away from the substrate; the thickness of at least one first nominal color resistance pattern in the non-display area is set to be smaller than that of the first display color resistance pattern in the display area, so that the height of the planarization layer in the display area is consistent with that of the planarization layer in the non-display area, the box thickness difference between the display area and the non-display area is improved, the problem that the periphery of the display area of the liquid crystal display panel is yellow is solved, the display effect and the product yield are improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a color film substrate in the prior art;
fig. 2 is a schematic diagram of a film structure of a color film substrate according to an embodiment of the present invention;
fig. 3 is a schematic top view of a color filter substrate according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a film structure of a color film substrate according to an embodiment of the present invention;
fig. 5 is a schematic top view of a color filter substrate according to another embodiment of the present invention;
fig. 6 is a top view structural diagram of another color filter substrate according to an embodiment of the present invention;
fig. 7 is a top view of another color filter substrate according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a film structure of another color film substrate according to an embodiment of the present disclosure;
fig. 9 is a schematic top view of a color filter substrate according to another embodiment of the present invention;
fig. 10 is a schematic diagram of a film structure of another color film substrate according to an embodiment of the present disclosure;
fig. 11 is a schematic top view of a color filter substrate according to another embodiment of the present invention;
FIG. 12 is a graph of thickness versus width for a color resist pattern of different colors according to an embodiment of the present invention;
fig. 13 is a schematic top view of a color filter substrate according to another embodiment of the present invention;
fig. 14 is a schematic diagram of a film structure of a display panel according to an embodiment of the invention; and
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic cross-sectional structure diagram of a color filter substrate in the prior art. As shown in fig. 1, the color filter substrate includes an underlying substrate 1, a light-shielding layer 2 disposed on the underlying substrate 1, a color resist layer 3, and a planarization layer 4 disposed on a side of the color resist layer 3 away from the underlying substrate. The light shielding layer 2 can shield wiring, thin film transistors, fingerprint identification elements and the like arranged in the display area and the non-display area so as to prevent unnecessary light leakage, the light shielding layer 2 positioned in the display area is provided with an opening structure, and the light shielding layer 2 positioned in the non-display area is not provided with an opening structure; the color resistance layer 3 comprises color resistance patterns with different colors, at least part of the color resistance patterns in the display area is positioned in the opening structure of the light shielding layer 2, and the color resistance patterns in the non-display area are positioned on one side of the light shielding layer 2, which is far away from the substrate 1. The planarization layer 4 can fill in depressions and projections due to film layer patterning between the planarization layer 4 and the substrate base plate 1.
However, since the planarization layer 4 is difficult to achieve filling at a long distance, when the color resistance pattern of the display area is located in the opening structure of the light shielding layer 2, and the color resistance pattern of the non-display area is located on the side of the light shielding layer away from the substrate, the phenomenon that the height of the non-display area is larger than that of the display area still exists after filling by the planarization layer 4, and the liquid crystal cell formed by the color film substrate has a difference in cell thickness, so that when a picture is displayed, a phenomenon that the peripheral area of the display area is yellow occurs.
In order to solve the technical problem, an embodiment of the present invention provides a color film substrate, where the color film substrate includes a substrate; the substrate includes a display area and a non-display area surrounding the display area; a light shielding layer and a color resistance layer positioned on one side of the substrate; the light shielding layer positioned in the display area is provided with an opening structure; the color resistance layer comprises a plurality of color resistance patterns with different colors; the orthographic projection of the color resistance pattern positioned in the display area on the substrate completely covers the orthographic projection of the opening structure of the shading layer on the substrate, and the color resistance pattern positioned in the non-display area is arranged on one side, away from the substrate, of the shading layer; a planarization layer is arranged on one side of the color resistance layer, which is far away from the substrate base plate; the display area comprises a plurality of display color resistance units, each display color resistance unit comprises a plurality of display color resistance patterns with different colors, and the plurality of display color resistance patterns comprise first display color resistance patterns; the non-display area comprises a plurality of dummy color resistance units, each dummy color resistance unit comprises at least one dummy color resistance pattern, and the at least one dummy color resistance pattern comprises a first dummy color resistance pattern; the color of the first display color resistance pattern is the same as that of the first dummy color resistance pattern; the thickness of the first dummy color resistance pattern is smaller than that of the first display color resistance pattern along the direction vertical to the plane of the substrate base plate.
By adopting the technical scheme, the thickness of at least one first nominal color resistance pattern in the non-display area is set to be smaller than that of the first display color resistance pattern in the display area, so that the height of the planarization layer in the display area is consistent with that of the planarization layer in the non-display area, the box thickness difference between the display area and the non-display area is improved, the problem that the periphery of the display area of the liquid crystal display panel is yellow is solved, the display effect and the product yield are improved, and the production cost is reduced.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 2 is a schematic diagram of a film structure of a color film substrate according to an embodiment of the present invention. As shown in fig. 2, the color filter substrate includes: a base substrate 10; the substrate base plate 10 includes a display area 100 and a non-display area 200 surrounding the display area 100; a light-shielding layer 20 and a color resist layer 30 on one side of the base substrate 10; the color resist layer 30 includes a plurality of color resist patterns of different colors, which may include, for example, a red color resist pattern, a green color resist pattern, and a blue color resist pattern.
It should be noted that the substrate 10 includes a display area 100 and a non-display area 200, and since the color filter substrate includes the substrate 10, the display area 100 of the substrate 10 is a display area of the color filter substrate, and the non-display area 200 of the substrate 10 is a non-display area of the color filter substrate; correspondingly, in each film layer on the substrate 10, the position corresponding to the display area 100 of the substrate 10 is the display area of each film layer, and the position corresponding to the non-display area 200 of the substrate 10 is the non-display area of each film layer.
The light-shielding layer 20 located in the display area 100 has an open structure, and the orthographic projection of the color-resisting pattern located in the display area 100 on the substrate 10 completely covers the orthographic projection of the open structure of the light-shielding layer 20 on the substrate 10, that is, the portion of the color-resisting pattern located in the display area 100 is located in the open structure of the light-shielding layer 20, so that the edge of the color-resisting pattern located in the display area 100 is overlapped with the light-shielding layer 20, thereby preventing unnecessary light leakage; the light-shielding layer 20 in the non-display area 200 covers the entire substrate 10 in the non-display area 200, and the color-resisting pattern in the non-display area 200 is disposed on a side of the light-shielding layer 20 away from the substrate 10. Thus, the color resist patterns are arranged in the display area 100 and the non-display area 200 around the display area 100, and the color resist patterns in the non-display area 200 can protect the color resist patterns in the display area 100 to a certain extent, so that the color resist patterns in the display area 100 are prevented from falling off due to flushing of developing solution and the like.
In addition, the display area 100 includes a plurality of display color resistance units, each of which includes a plurality of display color resistance patterns with different colors, the display color resistance unit includes at least one first display color resistance pattern 301, and the color of the first display color resistance pattern 301 may be any one of red, green and blue; correspondingly, the non-display area 200 includes a plurality of dummy color resistance units, each dummy color resistance unit includes at least one first dummy color resistance pattern 302, and the color of the first dummy color resistance pattern 301 may be the same as the color of the first display color resistance pattern, so that the first dummy color resistance pattern and the first display color resistance pattern can be formed by using the same material and using the same process, thereby simplifying the manufacturing process of the color filter substrate and reducing the production cost.
After patterning each film layer on the substrate 10, one side surface of the color film substrate is uneven, so that the box thickness is uneven when the box thickness is formed, and the display effect is further affected. Therefore, the planarization layer 40 is disposed on the side of the color resist layer 30 away from the substrate 10 to fill and level the surface of the color filter substrate. The material of the planarization layer 40 may include an organic material, such as a Polyimide (PI) material, wherein the organic material has certain fluidity, and the planarization layer 40 may perform a leveling function after the organic material is applied to the planarization layer 40.
When the material of the planarization layer 40 is an organic material, the material of the planarization layer 40 has a certain fluidity during the preparation of the planarization layer 40, and can flow from a high position to a low position, thereby playing a role of filling up other film layers on the substrate 10. However, since the planarization layer 40 has a poor filling effect for a long distance, when the color-resist pattern in the display area 100 is partially located in the opening structure of the light-shielding layer 20, and the color-resist pattern in the non-display area 200 is disposed on the side of the light-shielding layer 20 away from the substrate 10, and the color-resist patterns in the display area 100 and the non-display area 200 have the same height, the overall height of the non-display area is greater than that of the display area, and after the planarization layer 40 is used for filling, such a height difference still exists.
Since the first display color-resisting pattern 301 is partially located in the opening structure of the light-shielding layer, and the first dummy color-resisting pattern 302 is located on the side of the light-shielding layer 20 away from the substrate 10, i.e. the first dummy color-resisting pattern 302 is lifted by the light-shielding layer 20. When the thickness H2 of at least one of the first dummy color resist patterns 302 located in the non-display area is set to be smaller than the thickness H1 of the first display color resist pattern 301 located in the display area in the direction Z perpendicular to the plane of the substrate base plate 10, the height of the surface of the first dummy color resist pattern 302 on the side away from the substrate base plate and the height of the surface of the first display color resist pattern 301 on the side away from the substrate base plate 10 tend to coincide. Thus, after the planarization layer 40 is formed, the overall height of the display area 100 in the color filter substrate is approximately consistent with the overall height of the non-display area 200, so that when the color filter substrate is applied to a display panel, the phenomenon that the periphery of a display picture in the display area is yellow due to the box thickness difference between the display area 100 and the non-display area 200 can be improved, the display effect and the product yield can be improved, and the production cost can be reduced.
Optionally, the distance between two adjacent dummy color resistance patterns in the non-display area along the first direction is a first distance; the distance between two adjacent display color resistance patterns in the display area along the first direction is a second distance; wherein the first distance is greater than or equal to the second distance.
Fig. 3 is a schematic top-view structure diagram of a color filter substrate according to an embodiment of the present invention; fig. 4 is a schematic diagram of a film structure of a color film substrate according to an embodiment of the present invention. Referring to fig. 3 and fig. 4, the color resist pattern on the substrate 10 may be formed by, for example, coating a color resist material on the entire surface of the light shielding layer 20 away from the substrate 10, and patterning the color resist pattern by etching or the like. The color resistance material at the position where the color resistance pattern is not required to be arranged is removed in the patterning process, so that a groove is formed between the adjacent color resistance patterns. The width of the groove between two adjacent dummy color resist patterns 302 in the non-display area 200 in the first direction X is a first distance D1, and the width of the groove between two adjacent display color resist patterns 301 in the display area 100 in the first direction X is a second distance D2. In the process of forming the planarization layer 40 on the side of the color resist layer 30 away from the substrate base plate 10, the material planarization layer 40 of the planarization layer 40 flows into the corresponding groove to fill up the groove and the protrusion where the color resist pattern is disposed, and since the first distance D1 between the two adjacent dummy color resist patterns 302 of the non-display area 200 is greater than or equal to the second distance D2 between the two adjacent display color resist patterns 301 of the display area 100, the material of the planarization layer 40 in the groove between the two adjacent dummy color resist patterns 302 of the non-display area 200 can be greater than the material of the planarization layer in the groove between the two adjacent display color resist patterns 301 of the display area 100, so that the height between the surface of the planarization layer 40 of the non-display area 200 away from the substrate base plate 10 and the height between the surface of the planarization layer 40 of the display area 100 away from the substrate base plate 10 and the substrate base plate 10 can be approximately the same, therefore, when the color film substrate is applied to a display panel, the thicknesses of a display area and a non-display liquid crystal layer in the display panel tend to be consistent, and the display effect of the display panel is improved.
The first direction X may be a row direction or a column direction of the color filter substrate. When the first direction X is the row direction of the color film substrate, the Y direction is the column direction of the color film substrate; when the first direction is the column direction of the color film substrate, the Y direction is the row direction of the color film substrate. When the color film substrate is applied to a display panel, the row direction of the display panel is the row direction of the color film substrate, and the column direction of the display panel is the column direction of the color film substrate. The display panel may include a plurality of scan lines extending in a row direction and arranged in a column direction, and a plurality of data lines extending in the column direction and arranged in the row direction, and the scan lines and the data lines intersect to define pixels of the display panel; each pixel may include a display color resistance pattern of a color filter substrate, that is, a row direction of the color filter substrate may be an extending direction of a scan line in the display panel, and a column direction of the color filter substrate may be an extending direction of a data line in the display panel, which is not specifically limited in this embodiment of the present invention.
For convenience of description, the following exemplarily illustrates the technical solution of the embodiment of the present invention by taking the first direction as the row direction, and for the technical principle and the beneficial effects of the case where the first direction is the column direction, reference may be made to the description of the first direction as the row direction, which is not repeated herein in the embodiment of the present invention.
Optionally, in the first direction, a distance between two adjacent dummy color resistance units is greater than or equal to a distance between two adjacent display color resistance units.
Fig. 5 is a schematic top-view structure diagram of another color filter substrate according to an embodiment of the present invention. As shown in fig. 5, the display area 100 of the color filter substrate includes a plurality of display color resistance units 500, each display color resistance unit 500 includes a plurality of display color resistance patterns of different colors, and a distance D4 is provided between two adjacent display color resistance units 500; the non-display area 200 of the color filter substrate includes a plurality of dummy color resistance patterns 400, each dummy color resistance unit 400 includes at least one dummy color resistance pattern, and a distance D3 is also provided between two adjacent dummy color resistance units 400. In the first direction X, by setting the distance D3 between two adjacent dummy color resistance units 400 to be equal to or greater than the distance D4 between two adjacent display color resistance units 500, the material of the planarization layer 40 between two adjacent dummy color resistance units 400 flowing to the non-display area 200 can be made larger than the material of the planarization layer between two adjacent display color resistance units 500 flowing to the display area 100, so that the height between the surface of the planarization layer 40 of the non-display area 200 away from the substrate 10 and the height between the surface of the planarization layer 40 of the display area 100 away from the substrate 10 and the substrate 10 tend to be consistent, and when the color filter substrate is applied to a display panel, the thicknesses of the display area and the non-display liquid crystal layer in the display panel tend to be consistent, thereby improving the display effect of the display panel.
Optionally, in the first direction, a width of the first dummy color resist pattern located in the non-display area is greater than a width of the first display color resist pattern located in the display area.
Specifically, fig. 6 is a top view structural diagram of another color filter substrate according to an embodiment of the present invention. Referring to fig. 4 and 6 in combination, the width of the first dummy color resist pattern 302 in the non-display area 200 is a first width S1, and the width of the first display color resist pattern 301 in the display area 100 is a second width S2. When the first width S1 of the first dummy color resist pattern 302 is set to be greater than the second width S2 of the first display color resist pattern 301, the filling distance of the planarization layer 40 in the non-display region can be reduced, which is favorable for reducing the height difference of the surface of the planarization layer 40 at each position on the side away from the substrate, and further improving the display effect; meanwhile, widening the width of the dummy color resist pattern in the non-display area is beneficial to enhancing the protection effect of the dummy color resist pattern in the non-display area 200 on the display color resist pattern in the display area 100.
In addition, with continued reference to fig. 6, the color-resist layer 30 includes a plurality of color-resist patterns of different colors, which are made of corresponding color-resist materials, and the color-resist patterns of the color-resist layer 30 can be prepared, for example, by a spray coating process. Under the condition that the speed of spraying the color resistance material is unchanged, the thickness of the formed color resistance pattern is inversely related to the width of the color resistance pattern, namely, the larger the width of the color resistance pattern is, the thinner the thickness of the color resistance pattern is. When the width of the first dummy color resist pattern 302 in the non-display area 200 is the first width S1 and the width of the first display color resist pattern 301 in the display area 100 is the second width S2 in the first direction X, the thickness of the first dummy color resist pattern 302 is smaller than that of the first display color resist pattern 301. At this time, since the light shielding layer 20 is disposed below the first dummy color resist pattern 302 of the non-display area 200, when the thickness of the first dummy color resist pattern 302 is smaller than that of the first display color resist pattern 301, the overall thicknesses of the display area 100 and the non-display area 200 can be made to be consistent, so that after the planarization layer 40 is formed, the thicknesses of the display area 100 and the non-display area 200 of the color filter substrate can be made to be consistent, thereby improving the yellowing phenomenon of the display area periphery due to the box thickness difference between the display area 100 and the non-display area 200, and when the color filter substrate is applied to a display panel, the display effect and the product yield can be improved, thereby reducing the production cost.
Optionally, the display color resistance pattern in the display area further includes a second display color resistance pattern and a third display color resistance pattern, and the dummy color resistance pattern in the non-display area further includes the second dummy color resistance pattern; the color of the first display color resistance pattern is a first color, the color of the second display color resistance pattern is a second color, and the color of the third display color resistance pattern is a third color; the first color, the second color and the third color are different colors; the color of the second dummy color resistance pattern is the same as that of the second display color resistance pattern; the thickness of the second dummy color resistance pattern is less than or equal to the thickness of the second display color resistance pattern.
Specifically, fig. 7 is a top view of another color filter substrate according to an embodiment of the present invention. Referring to fig. 4 and 7 in combination, the display color resist pattern in the display area 100 includes a first display color resist pattern 301, a second display color resist pattern 303 and a third display color resist pattern 305, and the dummy color resist pattern in the non-display area 200 includes a first dummy color resist pattern 302 and a second dummy color resist pattern 304. The color of the first display color resistance pattern 301 may be any one of red, green and blue, the color of the second display color resistance pattern 303 may be any one of red, green and blue, the color of the third display color resistance pattern 305 may be any one of red, green and blue, and the color of the first display color resistance pattern 301, the color of the second display color resistance pattern 303 and the color of the third display color resistance pattern 305 are different from each other; the color of the first dummy color resist pattern 302 may be the same as the color of the first display color resist pattern 301, the color of the second dummy color resist pattern 304 may be the same as the color of the second display color resist pattern 303, so that the first dummy color resist pattern 302 and the first display color resist pattern 301 are formed by using the same material in the same process, and the second dummy color resist pattern 304 and the second display color resist pattern 303 are formed by using the same material in the same process, thereby simplifying the process and reducing the manufacturing cost.
In addition, since the dummy color resist pattern of the non-display area 200 is raised by the light-shielding layer, the thickness H2 of the first dummy color resist pattern 302 is set to be smaller than the thickness H1 of the first display color resist pattern 301, and the thickness H4 of the second dummy color resist pattern 304 is set to be equal to or smaller than the thickness H3 of the second display color resist pattern 303, so that the thicknesses of the non-display area 200 and the display area 100 can be made to be consistent after the planarization layer 40 is formed, and thus, when the color filter substrate is applied to a display panel, the box thickness difference between the display area and the non-display area of the display panel can be improved, and the display effect of the display panel can be further improved. Meanwhile, on the premise that the dummy color resist patterns arranged in the non-display area 200 have a corresponding protection effect on the display color resist patterns of the display area 100, the color types of the dummy color resist patterns of the non-display area 200 can be less than the color types of the display color resist patterns in the display area 100, so that raw materials are saved, and the cost is reduced.
Optionally, in the first direction, the width of the second dummy color resist pattern is greater than or equal to the width of the second display color resist pattern.
Specifically, with continuing reference to fig. 4 and 7, the width of the second dummy color resist pattern 304 in the non-display area 200 is the third width S3, and the width of the second display color resist pattern 303 in the display area 100 is the fourth width S4. When the third width S3 of the second dummy color resist pattern 304 is set to be greater than the fourth width S4 of the second display color resist pattern, the filling distance of the planarization layer 40 in the non-display region can be further reduced, which is favorable for reducing the height difference at each position of the surface of the planarization layer 40 on the side away from the substrate base plate, and further improving the display effect.
With continuing reference to fig. 4 and 7, since the thickness of the color resist pattern is inversely related to the width of the color resist pattern, by setting the width of the second dummy color resist pattern to be greater than the width of the second display color resist pattern, the thickness of the second dummy color resist pattern can be further smaller than the thickness of the second display color resist pattern, so that the thickness difference between the display area and the non-display area of the color filter substrate can be further reduced; meanwhile, widening the width of the dummy color resist pattern in the non-display area is beneficial to enhancing the protection effect of the dummy color resist pattern in the non-display area 200 on the display color resist pattern in the display area 100.
Optionally, fig. 8 is a schematic diagram of a film structure of another color film substrate according to an embodiment of the present disclosure; fig. 9 is a schematic top view structure of another color filter substrate according to an embodiment of the present invention. With combined reference to fig. 8 and 9, the dummy color-resist pattern further includes a third dummy color-resist pattern 306; the color of the third dummy color resist pattern 306 is the same as the color of the third display color resist pattern 305; thus, the third display color-resist pattern 305 and the third dummy color-resist pattern 306 can be formed by the same material and the same process, so as to simplify the process and reduce the production cost; meanwhile, the further addition of the third dummy color resist pattern 306 in the non-display area 200 can enhance the protection effect on the color resist pattern in the display area 100.
Further, with continuing reference to fig. 8 and 9, in the first direction X, the thickness of the third dummy color resist pattern 306 is H6, and the thickness of the third display color resist pattern 305 is H5. By setting the thickness of the third dummy color resist pattern 306 to be less than or equal to the thickness of the third display color resist pattern 305, the thickness of the first dummy color resist pattern 302 is less than the thickness of the first display color resist pattern 301, and the thickness of the second dummy color resist pattern 304 is less than or equal to the thickness of the second display color resist pattern 303, the thicknesses of the display area 100 and the non-display area 200 of the color filter substrate can be made to be consistent, the box thickness difference caused by the height difference of the color filter substrate can be further improved, and the display effect of the display panel can be further improved.
Optionally, with continuing reference to fig. 8 and 9, in the first direction X, the width S5 of the third dummy color resist pattern 306 is greater than or equal to the width S6 of the third display color resist pattern 305.
Specifically, since the width of the color resist pattern is inversely related to the thickness of the color resist pattern, when the width S5 of the third dummy color resist pattern 306 is set to be greater than or equal to the width S6 of the third display color resist pattern 305, the thickness H6 of the third dummy color resist pattern 306 can be advantageously reduced, and the fill-and-level distance of the planarization layer 40 can be reduced, thereby being advantageous to further reduce the thickness difference between the display area 100 and the non-display area 200, and further improving the display effect. In addition, when the width of the dummy color resist pattern is increased, the contact area between the dummy color resist pattern and the film layer below the dummy color resist pattern can be increased, so as to further enhance the protection function of the color resist pattern in the display area 100.
Optionally, fig. 10 is a schematic diagram of a film structure of another color film substrate according to an embodiment of the present disclosure; fig. 11 is a schematic top-view structure diagram of another color filter substrate according to an embodiment of the present invention. Referring to fig. 10 and 11 in combination, the short side width S1 of the first dummy color resist pattern 302 and the short side width S5 of the third dummy color resist pattern 306 are both greater than the short side width S3 of the second dummy color resist pattern 304; in the first direction, the gap length between the adjacent second dummy color resist pattern 304 and the first dummy color resist pattern 302 is a first length L1; the gap length between the adjacent first dummy color resist pattern 302 and the third dummy color resist pattern 306 is a second length L2; the gap length between the adjacent third dummy color resist pattern 306 and the second dummy color resist pattern 304 is a third length L3; wherein the second length L2 and the third length L3 are both less than the first length L1; the first direction is a short side extending direction of the color resist pattern of the non-display area 200.
Specifically, display color resistance units arranged in an array are arranged in the display area 100 of the color film substrate, and the display color resistance units arranged in the array have a row direction and a column direction. When the color film substrate is applied to a display panel, the row direction of the display color resistance units is the extending direction of the scanning lines in the display panel, and the column direction of the display color resistance units is the extending direction of the data lines in the display panel. In this case, the short-side extending direction X of each dummy color resist pattern may be a row direction or a column direction. Taking the short side extending direction X of each dummy color resist pattern as an example of the row direction, when the short side width S2 of the first dummy color resist pattern 302 and the short side width S6 of the third dummy color resist pattern 306 are both larger than the short side width S4 of the second dummy color resist pattern 304, that is, in the first direction X, the size of the first dummy color resist pattern 302 and the size of the third dummy color resist pattern are both larger than the size of the second dummy color resist pattern, and the gap length L2 between the adjacent first dummy color resist pattern 302 and the third dummy color resist pattern 306 and the gap length L3 between the adjacent third dummy color resist pattern 306 and the second dummy color resist pattern 304 are set smaller than the gap length L1 between the adjacent second dummy color resist pattern 304 and the first dummy color resist pattern 302, on the one hand, the increase of the width of the non-display region in the first direction X due to the short side width of the color resist patterns can be prevented, namely, the size of the frame of the display panel is increased, thereby being beneficial to the narrow frame of the display panel; on the other hand, since the thickness of the dummy color resists is inversely related to the width of the dummy color resists, when the width of the short side S1 of the first dummy color resist pattern 302 and the width of the short side S5 of the third dummy color resist pattern 306 are both greater than the width of the short side S3 of the second dummy color resist pattern 304, the thickness of the first dummy color resist pattern 302 and the thickness of the third dummy color resist pattern 306 are smaller than the thickness of the second dummy color resist pattern 304, and the first length L1 is set to be greater than the second length L2 and the third length L3, so that the material of the planarization layer 40 on the second dummy color resist 304 can be sufficiently flowed into the gap between the adjacent second dummy color resist pattern 304 and the first dummy color resist pattern 302 during the planarization layer 40 leveling process, to reduce the thickness of the planarization layer 40 on the side of the second dummy color resist pattern 304 facing away from the substrate 10, thereby facilitating further reducing the height difference at each position of the surface of the planarization layer 40 facing away from the substrate 10 side, is favorable for further improving the display effect.
In addition, the width and thickness of the same color resist pattern are inversely related, and the thickness of different color resist patterns is also related to the manufacturing process of each color resist pattern.
For example, fig. 12 is a graph of thickness versus width of color resist patterns of different colors according to an embodiment of the present invention. Referring to fig. 10, 11 and 12, the color resist layer 30 includes a plurality of color resist patterns of different colors, and the color resist patterns of different colors need to be formed in different processes. That is, when the color of the first display color resist pattern 301 is green, the color of the second display color resist pattern 303 is red, and the color of the third display color resist pattern 305 is blue, the second display color resist pattern 303 and the second dummy color resist pattern 304 may be formed in the first process, the first display color resist pattern 301 and the first dummy color resist pattern 302 may be formed in the second process, and the third display color resist pattern 305 and the third dummy color resist pattern 306 may be formed in the third process. Since the width of the color resist pattern is inversely related to the thickness of the color resist pattern, and the color resist pattern of the previous process affects the color resist pattern of the subsequent process, when the second dummy color resist pattern 304 is formed in the first process, and the first dummy color resist pattern 302 and the third dummy color resist pattern 306 are formed in the second process and the third process, respectively, the rate of the decrease of the thickness of the first dummy color resist pattern 302 and the third dummy color resist pattern 306 along with the increase of the width is greater than the rate of the decrease of the thickness of the second dummy color resist pattern 304 along with the increase of the width, that is, the first dummy color resist pattern 302, the second dummy color resist pattern 304 and the third dummy color resist pattern 306 with the same width are prepared at the same preparation rate, and the thickness of the obtained first dummy color resist pattern 302 and the obtained third dummy color resist pattern 306 is less than the thickness of the second dummy color resist pattern 304. When the widths of the first dummy color resist pattern 302 and the third dummy color resist pattern 306 are both set to be greater than the width of the second dummy color resist pattern 304, the thicknesses of the first dummy color resist pattern 302 and the third dummy color resist pattern 306 may be relatively reduced. Thus, in order to obtain a dummy color resist pattern with a smaller thickness, the width of the dummy color resist pattern can be increased, and the dummy color resist pattern can be processed after the dummy color resist pattern.
Alternatively, the dummy color resist pattern positioned in the non-display area may include a ring-shaped dummy color resist pattern surrounding the display area.
Fig. 13 is a schematic top-view structure diagram of another color filter substrate according to an embodiment of the present invention. As shown in fig. 13, the color resist pattern in the non-display area 200 may include a ring-shaped dummy color resist pattern 310 surrounding the display area 100, and the ring-shaped dummy color resist pattern 310 may be continuous and uninterrupted around the display area 100, so as to improve the adhesion of the ring-shaped dummy color resist pattern 310 and enhance the protection effect on the display color resist pattern (not shown) in the display area 100. In addition, on the premise that the adhesion of the annular dummy color resist pattern 310 can be relatively improved, the annular color resist pattern 310 may have a shape intermittently spaced from each other or may be continuous only in the Y direction. The Y direction may be a column direction of the color film substrate.
Optionally, the dummy color resist pattern in the non-display area may further include a block-shaped dummy color resist pattern; the block-shaped dummy color resistance pattern is positioned on one side of the annular dummy color resistance pattern far away from the display area.
Illustratively, with continued reference to fig. 13, a block-shaped color resist pattern 320 is further disposed on a side of the ring-shaped dummy color resist pattern 310 away from the display area 100, and the block-shaped dummy color resist pattern 320 may be, for example, a small block which is independent from each other and has the same size as the display color resist pattern (not shown in the figure) in the display area 100. Thus, the protection effect on the color-resisting pattern in the display area 100 can be further enhanced; meanwhile, since the adhesion of the block dummy color resist pattern 320 is weaker than that of the ring dummy color resist pattern 310, the block dummy color resist pattern 320 is disposed on the side of the ring dummy color resist pattern 310 away from the display area 100, so that the display color resist pattern of the display area 100 can be protected by the ring dummy color resist pattern 310 having stronger adhesion when the block dummy color resist pattern 320 is washed away by the etching solution.
The embodiment of the invention also provides a display panel, which comprises the color film substrate provided by the embodiment of the invention; the array substrate is arranged opposite to the color film substrate; the supporting column is positioned between the array substrate and the color film substrate; the orthographic projection of the support column on the array substrate is positioned in the orthographic projection of the shading layer in the color film substrate on the array substrate. Since the display panel provided by the embodiment of the present invention includes the color film substrate provided by the embodiment of the present invention, the display panel provided by the embodiment of the present invention also has the beneficial effects of the color film substrate provided by the embodiment of the present invention, and reference may be made to the description of the color film substrate described above for the same points.
Fig. 14 is a schematic diagram of a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 14, the display panel 01 includes a color film substrate 011, an array substrate 012 disposed opposite to the color film substrate 011, a liquid crystal layer 013 and support columns 014 disposed between the color film substrate 011 and the array substrate 012 according to the embodiment of the present invention. The orthographic projection of the supporting column 014 on the array substrate 012 is located in the orthographic projection of the light shielding layer 20 on the array substrate 012 in the color film substrate 011, that is, the orthographic projection of the supporting column 014 on the array substrate 012 in the display area 100 and the orthographic projection of the opening structure of the light shielding layer 20 on the array substrate 012 are not overlapped with each other, so as to prevent the arrangement of the supporting column 014 from influencing the display effect of the display panel 01; the orthographic projection of the support columns 014 positioned in the non-display area 200 on the array substrate should be overlapped with the orthographic projection of the color resistance pattern positioned in the non-display area 200 on the array substrate 012 as much as possible, so that the heights of the support columns 014 positioned in the display area 100 and the non-display area 200 tend to be consistent, the thicknesses of the liquid crystal layer 013 of the display area 100 and the non-display area 200 of the display panel 01 are kept consistent, the phenomenon of yellowing of the periphery of a display picture caused by the difference of the cell thickness is improved, the display effect of the display panel 01 is further improved, the product yield of the display panel 01 is improved, and the production cost is reduced.
The embodiment of the present invention further provides a display device, where the display device includes the display panel provided in the embodiment of the present invention, so that the display device has the beneficial effects of the display panel provided in the embodiment of the present invention, and in the same place, reference may be made to the description of the display panel, and details are not repeated herein.
Exemplarily, fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 15, the display device 010 includes the display panel 01 provided in the embodiment of the present invention. The display device 010 may be, for example, a portable display device, a computer monitor, a wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (14)
1. A color film substrate is characterized by comprising:
a substrate base plate; the substrate comprises a display area and a non-display area surrounding the display area;
the light shielding layer and the color resistance layer are positioned on one side of the substrate; the light shielding layer positioned in the display area is provided with an opening structure; the color resistance layer comprises a plurality of color resistance patterns with different colors; the orthographic projection of the color resistance pattern positioned in the display area on the substrate completely covers the orthographic projection of the opening structure of the light shielding layer on the substrate, and the color resistance pattern positioned in the non-display area is arranged on one side of the light shielding layer, which is far away from the substrate;
a planarization layer is further arranged on one side, away from the substrate, of the color resistance layer;
the display area comprises a plurality of display color resistance units, each display color resistance unit comprises a plurality of display color resistance patterns with different colors, and the plurality of display color resistance patterns comprise first display color resistance patterns; the non-display area comprises a plurality of dummy color resistance units, each dummy color resistance unit comprises at least one dummy color resistance pattern, and the at least one dummy color resistance pattern comprises a first dummy color resistance pattern;
the color of the first display color resistance pattern is the same as that of the first dummy color resistance pattern; and in the direction perpendicular to the plane of the substrate base plate, the thickness of the first dummy color resistance pattern is smaller than that of the first display color resistance pattern.
2. The color filter substrate according to claim 1, wherein a distance between two adjacent dummy color resist patterns along a first direction is a first distance; the distance between every two adjacent display color resistance patterns along the first direction is a second distance;
wherein the first distance is greater than or equal to the second distance.
3. The color filter substrate of claim 1,
along the first direction, the distance between two adjacent dummy color resistance units is larger than or equal to the distance between two adjacent display color resistance units.
4. The color filter substrate of claim 1, wherein in a first direction, the width of the first dummy color resist pattern is greater than the width of the first display color resist pattern.
5. The color filter substrate according to claim 1, wherein the display color resistance patterns further comprise a second display color resistance pattern and a third display color resistance pattern, and the dummy color resistance patterns further comprise the second dummy color resistance pattern;
the color of the first display color resistance pattern is a first color, the color of the second display color resistance pattern is a second color, and the color of the third display color resistance pattern is a third color; and the first color, the second color, and the third color are different colors;
the color of the second dummy color resistance pattern is the same as that of the second display color resistance pattern; the thickness of the second dummy color resistance pattern is smaller than or equal to that of the second display color resistance pattern.
6. The color filter substrate according to claim 5, wherein in the first direction, the width of the second dummy color resist pattern is greater than or equal to the width of the second display color resist pattern.
7. The color filter substrate according to claim 5, wherein the dummy color resist patterns further comprise a third dummy color resist pattern; the color of the third dummy color resistance pattern is the same as the color of the third display color resistance pattern;
the thickness of the third dummy color resistance pattern is less than or equal to the thickness of the third display color resistance pattern.
8. The color filter substrate according to claim 7, wherein in the first direction, the width of the third dummy color resist pattern is greater than or equal to the width of the third display color resist pattern.
9. The color filter substrate according to claim 7, wherein the width of the short side of the first dummy color resist pattern and the width of the short side of the third dummy color resist pattern are both greater than the width of the short side of the second dummy color resist pattern;
in the first direction, the length of a gap between the adjacent second dummy color resistance pattern and the first dummy color resistance pattern is a first length; the gap length between the adjacent first dummy color resistance pattern and the third dummy color resistance pattern is a second length; the gap length between the adjacent third dummy color resistance pattern and the second dummy color resistance pattern is a third length;
wherein the second length and the third length are both less than the first length; the first direction is the extending direction of the short side of the color resistance pattern of the non-display area.
10. A color filter substrate according to any one of claims 5 to 9, wherein the first color is any one of red, green and blue; the second color is any one of red, green and blue; the third color is any one of red, green and blue;
wherein the first color, the second color, and the third color are different colors.
11. A color filter substrate according to any one of claims 1 to 9, wherein the dummy color resist pattern comprises an annular dummy color resist pattern surrounding the display area.
12. The color filter substrate according to claim 11, wherein the dummy color resist patterns further comprise block-shaped dummy color resist patterns; the block-shaped dummy color resistance pattern is positioned on one side of the annular dummy color resistance pattern far away from the display area.
13. A display panel, comprising:
a color filter substrate according to any one of claims 1 to 12;
the array substrate is arranged opposite to the color film substrate;
the supporting column is positioned between the array substrate and the color film substrate; and the orthographic projection of the support column on the array substrate is positioned in the orthographic projection of the shading layer in the color film substrate on the array substrate.
14. A display device, comprising: the display panel of claim 13.
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Application publication date: 20200228 |