CN110989251B

CN110989251B - display panel

Info

Publication number: CN110989251B
Application number: CN201911395534.8A
Authority: CN
Inventors: 颜崇纹; 萧翌辰; 王兆祥
Original assignee: Innolux Display Corp
Current assignee: Innolux Corp
Priority date: 2015-06-24
Filing date: 2015-06-24
Publication date: 2023-10-03
Anticipated expiration: 2035-06-24
Also published as: CN106324915B; CN110989251A; CN106324915A

Abstract

The application discloses a display panel, which comprises: a first substrate; a second substrate disposed opposite to the first substrate; a column shielding pattern disposed on the second substrate; the first color filter unit is arranged on the second substrate; and the spacer is at least partially overlapped on the first color filter unit and is arranged on the column shielding pattern, wherein the edge of the column shielding pattern corresponding to the spacer is provided with an arc shape, and the first side edge of the first color filter unit deviates from the center of the spacer.

Description

Display panel

The application relates to a divisional application of Chinese patent application (application number: 201510352874.8, application date: 2015, 06, 24, application name: display panel).

Technical Field

The present application relates to a display panel, and more particularly, to a display panel having a color filter unit.

Background

Liquid crystal display devices have been widely used in recent years for display elements of various products. The liquid crystal display device controls the light penetration by utilizing the characteristic that liquid crystal molecules have different polarization or refraction effects on light under different arrangement states, so that the liquid crystal display device can generate images.

Recently, various types of wide viewing angle liquid crystal display devices, such as In-Plane Switching (IPS) liquid crystal display devices and Fringe-Field Switching (FFS) liquid crystal display devices, have been developed, which have a wide viewing angle and a high aperture ratio. However, when the display device is to be developed to be lighter, thinner, and smaller, the problem of the reduction of the yield of the manufacturing process may still be encountered.

Disclosure of Invention

In order to solve the above problems, the present application provides a display panel comprising: a first substrate including two scan lines; a second substrate disposed opposite to the first substrate; the shielding layer is arranged on the second substrate and comprises two rows of shielding patterns for shielding the two scanning lines; the first color filter unit is arranged on the second substrate; and a spacer disposed on the first color filter unit, wherein the spacer is disposed on one of the two rows of shielding patterns, and the first color filter unit has a first side, the first side includes a first portion disposed between the two rows of shielding patterns, and a second portion disposed on one of the two rows of shielding patterns, and the first portion is connected to the second portion, wherein a shortest distance between an extension line of the first portion and a center of the spacer is a first distance, a shortest distance between the second portion and the center of the spacer is a second distance, and the first distance is smaller than the second distance.

The present application also provides a display panel including: the first substrate comprises a data line and two scanning lines; a second substrate disposed opposite to the first substrate; the shielding layer is arranged on the second substrate and comprises two rows of shielding patterns for shielding the two scanning lines; the first color filter unit is arranged on the second substrate; and a spacer disposed on the first color filter unit, wherein the spacer is disposed on one of the two rows of shielding patterns, and the first color filter unit has a first side, the first side includes a first portion disposed between the two rows of shielding patterns, and a second portion disposed on one of the two rows of shielding patterns, and the first portion is connected to the second portion, wherein the first portion of the first portion is a straight line segment extending along the data line, and the second portion is a curved line segment that is curved along a bottom edge of the spacer.

In order to make the features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1A to 1C are sectional or upper views of a display panel according to an embodiment of the application;

FIG. 2 is an enlarged view of a portion of FIG. 1C;

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1C;

fig. 4A to 4B are top or cross-sectional views of a display panel according to another embodiment of the present application;

fig. 5A to 5B are top or cross-sectional views of a display panel according to still another embodiment of the present application;

fig. 6 is a top or cross-sectional view of a display panel according to still another embodiment of the present application;

fig. 7 is a top or cross-sectional view of a display panel according to still another embodiment of the present application;

fig. 8 is a top or cross-sectional view of a display panel according to another embodiment of the present application.

Symbol description

100. A display panel;

102. a first substrate;

104. a second substrate;

106. a liquid crystal layer;

108. a shielding layer;

108C1 line shielding pattern;

108C2 line shielding patterns;

108C3 line masking pattern;

108C4 line masking patterns;

108R column mask patterns;

108R1 column mask patterns;

108R2 column mask patterns;

110. a first color filter unit;

110E1 first part;

110E2 second part;

110S1 side;

110S2 side;

112. a second color filter unit;

112S1 side;

112S2 side;

114. a third color filter unit;

114S1 side;

114S2 side;

114E1 third portion;

114E2 fourth part;

116. a flat layer;

118. a main spacer;

118T top surface;

118B bottom surface;

118C center;

118BE edges;

120. a secondary spacer;

a 120T top surface;

120B bottom surface;

a 120C center;

120BE edges;

122. a first alignment layer;

124. a second alignment layer;

126. a data line;

126A data line;

126B data lines;

126C data lines;

126D data lines;

128. a scanning line;

128A scan line;

128B scan lines;

130. a pixel region;

132. an extension line;

134. an undercut portion;

136. an undercut portion;

138. an extension line;

140. a dot;

400. a display panel;

500. a display panel;

600. a display panel;

700. a display panel;

800. a display panel;

d1 A distance;

d2 A distance;

d3 A distance;

d4 A distance;

d5 A distance;

radius R1;

radius R2;

w1 width;

w2 width;

h1 Height of the steel plate;

h2 Height of the steel plate;

AA line segment;

33. a line segment.

Detailed Description

The display panel of the present application is described in detail below. It is to be understood that the following description provides many different embodiments, or examples, for implementing different aspects of the application. The specific components and arrangements described below are only a brief description of the present application. These are, of course, merely examples and are not intended to be limiting. Furthermore, repeated reference numerals or designations may be used in the various embodiments. These repetition are for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Furthermore, when a first material layer is described as being on or over a second material layer, this includes situations where the first material layer is in direct contact with the second material layer. Alternatively, it is also possible that one or more other material layers are spaced apart, in which case there may not be direct contact between the first material layer and the second material layer.

It is to be understood that the components specifically described or illustrated may exist in various forms well known to those skilled in the art. In addition, when a layer is "on" another layer or substrate, it may mean "directly on" the other layer or substrate, or on the other layer or substrate, or sandwiching the other layer between the other layers or substrates.

Moreover, relative terms such as "lower" or "bottom" and "upper" or "top" may be used in embodiments to describe the relative relationship of one component to another component illustrated. It will be appreciated that if the illustrated device is turned upside down, the components recited on the "lower" side will be components on the "upper" side.

The terms "about" and "approximately" herein generally mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The numbers given herein are about numbers, meaning that "about" may still be implied without specific recitation.

The distance mentioned in the embodiment of the present application is a distance measured after all the objects observed in the upper view are projected on a plane, and the distance can be obtained by measuring the photo taken by the optical microscope at the magnification of 50X and 100X.

The extension line mentioned in the embodiment of the present application is actually a virtual line segment extending along the side edge of the color filter unit on the above-mentioned plane, and the starting point of the virtual line segment is approximately the intersection point between the straight line segment and the curved line segment, and the extension direction of the virtual line segment is approximately parallel to the extension direction of the straight line segment.

The side edge of the color filter unit is deviated from the center of the spacer, so that the probability of the spacer to be skewed is reduced, and the manufacturing process yield of the display device is improved.

First, referring to fig. 1A, a cross-sectional view of a display device 100 according to an embodiment of the present application is shown. As shown in fig. 1A, the display device 100 includes a first substrate 102, a second substrate 104 disposed opposite to the first substrate 102, and a liquid crystal layer 106 disposed between the first substrate 102 and the second substrate 104. The display device 100 further includes a shielding layer 108 disposed on the second substrate 104, and a first color filter unit 110, a second color filter unit 112, and a third color filter unit 114 disposed on the shielding layer 108. The display device 100 further includes a planarization layer 116 disposed on the first color filter unit 110, the second color filter unit 112, and the third color filter unit 114, and a main spacer 118 and a sub-spacer 120 disposed on the planarization layer 116. The display device 100 further includes a first alignment layer 122 covering the main spacers 118, the sub-spacers 120, and the planarization layer 116, and a second alignment layer 124 disposed on the first substrate 102.

The display device 100 may be a liquid crystal display, such as a thin film transistor liquid crystal display. Alternatively, the liquid crystal display may be a Twisted Nematic (TN) type liquid crystal display, a super Twisted Nematic (Super Twisted Nematic, STN) type liquid crystal display, a double layer super Twisted Nematic (Double layer Super Twisted Nematic, DSTN) type liquid crystal display, a vertical alignment (Vertical Alignment, VA) type liquid crystal display, a Multi-domain vertical alignment (Multi-domain Vertical Alignment, MVA) type liquid crystal display, a horizontal electric field Switching (IPS) type liquid crystal display, a fringe electric field Switching (Fringe Field Switching, FFS) type liquid crystal display, a Cholesteric (cholesetic) type liquid crystal display, a Blue Phase (Blue Phase) type liquid crystal display, or any other suitable liquid crystal display.

The first substrate 102 may be a transistor substrate. The first substrate 102 as a transistor substrate may be a transparent substrate, and the material may be, for example, a glass substrate, a ceramic substrate, a plastic substrate, or any other suitable transparent substrate. In addition, a transistor (not shown), such as a thin film transistor, for controlling the pixel is disposed in or on the first substrate 102.

Further, referring to fig. 1B, which is a top view of the display panel 100 of the embodiment of fig. 1A, fig. 1A is a cross-sectional view drawn along line A-A of this fig. 1B. As shown in fig. 1B, the first substrate 102 includes two data lines (e.g., 126B and 126C) and two scan lines (128A and 128B). The pair of data lines (e.g., 126B and 126C) and the pair of scan lines (128A and 128B) together define a pixel region 130.

Referring back to fig. 1A, the second substrate 104 may be a color filter substrate, and the material may be, for example, a glass substrate, a ceramic substrate, a plastic substrate, or any other suitable transparent substrate.

It should be noted that, for clarity of illustration of the display panel 100 of the present application, fig. 1B only shows the data lines 126 and the scan lines 128 of the first substrate 102, and the shielding layer 108 on the second substrate 104, and other components of the display panel 100 are not shown.

The liquid crystal layer 106 may include nematic (nematic), smectic (chiral), cholesteric (cholesteric), blue phase (Blue phase) or any other suitable liquid crystal material.

The shielding layer 108 is used for shielding regions or components of the display panel 100 that are not used for displaying colors, such as for shielding scan lines and data lines. The material of the shielding layer 108 may be black photoresist, black printing ink, black resin, or any other suitable light shielding material and color.

In detail, referring to fig. 1B, the shielding layer 108 of the display panel 100 includes two column shielding patterns (108R 1 and 108R 2) shielding the pair of scan lines (128A and 128B), and two row shielding patterns (108C 2 and 108C 3) shielding the pair of data lines (e.g., 126B and 126C). In detail, the four column shielding patterns 108C1, 108C2, 108C3 and 108C4 shown in fig. 1B respectively shield the four data lines 126 (i.e. the data lines 126A, 126B, 126C and 126D). While the column shielding patterns 108R1, 108R2 shield the scan lines 128, in detail, the column shielding pattern 108R1 shields the scan lines 128A and the column shielding pattern 108R2 shields the scan lines 128B.

Referring back to fig. 1A, the first color filter unit 110, the second color filter unit 112, and the third color filter unit 114 may each independently include a red filter unit, a green filter unit, a blue filter unit, or any other suitable color filter unit. For example, in one embodiment, the first color filter unit 110 is a red filter unit, the second color filter unit 112 is a blue filter unit, and the third color filter unit 114 is a green filter unit.

Referring to fig. 1C, which is also a top view of the display panel 100 of the embodiment of fig. 1A, fig. 1A is a cross-sectional view taken along line A-A of fig. 1C. For clarity of illustration, FIG. 1C does not show the scan lines and the data lines. As shown in fig. 1C, the second color filter unit 112 and the third color filter unit 114 are respectively disposed on opposite sides of the first color filter unit 110. In addition, since the shielding layer 108 is disposed under the first color filter unit 110, the second color filter unit 112 and the third color filter unit 114, the shielding layer 108 is shown by a dotted line.

In addition, as shown in fig. 1C, the first color filter unit 110 has opposite sides 110S1 and 110S2, the second color filter unit 112 has opposite sides 112S1 and 112S2, and the third color filter unit 114 has opposite sides 114S1 and 114S2. In addition, the side 112S2 of the second color filter unit 112 and the side 110S1 of the first color filter unit 110 are adjacent to each other, and the side 110S2 of the first color filter unit 110 and the side 114S1 of the third color filter unit 114 are adjacent to each other.

It should be noted that fig. 1B and fig. 1C show the same display panel of the same embodiment. For clarity of illustration, FIG. 1C does not show the scan lines and the data lines.

Referring back to fig. 1A, in one embodiment, the planarization layer 116 may be conformally disposed on the first color filter unit 110. The planarization layer 116 may comprise plastic, photoresist. For example, the planarizing layer 116 may include an acrylic material (Acrylate), an Epoxy Acrylate material (Epoxy Acrylate), a silicone material (Siloxane), any other suitable material, or a combination thereof.

As shown in fig. 1A, a spacer (e.g., a primary spacer 118 or a secondary spacer 120) is disposed on the planarization layer 116. The primary spacers 118 disposed on the flat layer 116 (or on the second substrate 104) are used to space the second substrate 104 from the first substrate 102, so that the liquid crystal layer 106 can be filled between the second substrate 104 and the first substrate 102, and the secondary spacers 120 are mainly used to buffer the second substrate 104 and the first substrate 102 from being pressed.

In addition, since the main spacer 118 is a main structure for spacing the second substrate 104 from the first substrate 102, and the sub-spacer 120 is a structure for preventing the second substrate 104 from contacting the first substrate 102 when the display device 100 is pressed, the height of the main spacer 118 is higher than the height of the sub-spacer 120, and the width of the main spacer 118 is also wider than the width of the sub-spacer 120. In detail, the primary spacers 118 have a first height H1, and the secondary spacers have a second height H2, and the first height H1 is greater than the second height H2. In addition, the primary spacers 118 have a first width W1, and the secondary spacers have a second width W2, and the first width W1 is greater than the second width W2.

In addition, the primary spacer 118 has a top surface 118T remote from the second substrate 104 and a bottom surface 118B adjacent to the second substrate 104, and the secondary spacer 120 also has a top surface 120T remote from the second substrate 104 and a bottom surface 120B adjacent to the second substrate 104. The material of the main spacers 118 and the sub-spacers 120 may include a photoresist, such as a positive photoresist or a negative photoresist. And the main spacers 118 and the sub-spacers 120 may be defined by the same photolithographic process. However, the main spacers 118 and the sub-spacers 120 may be defined by different photolithography processes. The photolithography process includes photoresist patterning, which further includes photoresist coating, soft baking, photomask alignment, exposure patterning, post-exposure baking (post-exposure baking), photoresist development, hard baking, and other process steps.

Referring to fig. 1A, the first alignment layer 122 and the second alignment layer 124 are thin layers for inducing alignment of liquid crystal molecules, and each of the materials may independently include polyimide (polyimide) or any other suitable alignment layer material. The first alignment layer 122 covers the second substrate 104, the planarization layer 116, the main spacers 118 and the sub-spacers 120. And the first alignment layer 122 disposed on the top surface 118T of the main spacer 118 may directly contact the second alignment layer 124.

Referring to fig. 1A and 1C, a main spacer 118 is disposed between the first color filter unit 110 and the second color filter unit 112, and the main spacer 118 is disposed on one of the two column shielding patterns 108R. It should be noted that fig. 1C illustrates the outline of the bottom surface 118B of the main spacer 118 and the outline of the bottom surface 120B of the sub-spacer 120 in fig. 1A. In this embodiment, a majority of the bottom surface 118B of the main spacers 118 is disposed above the first color filter unit 110, and a minority of the bottom surface 118B of the main spacers 118 is disposed above the second color filter unit 112.

In the embodiment shown in fig. 1C, the main spacers 118 are disposed on the row shielding patterns 108R1, the row shielding patterns 108R1 have a flared portion corresponding to the spacers 118, and the row shielding patterns 108R1 completely cover the main spacers 118. In detail, the edge of the row shielding pattern 108R1 corresponding to the spacer 118 is circular arc, and the circular arc edge defines an expanding portion of the row shielding pattern 108R1, and the bottom surface 118B of the spacer 118 is completely disposed in the region corresponding to the expanding portion of the row shielding pattern 108R 1.

Thus, the column shielding pattern 108R2 on which the main and sub spacers 118 and 120 are not disposed has only a straight portion, and the column shielding pattern 108R1 on which the main and/or sub spacers 118 and 120 are disposed has a straight portion and a flared portion.

With continued reference to fig. 1C, the first color filter unit 110 has a first side 110S1, the first side 110S1 has a first portion 110E1 located between two column shielding patterns, and a second portion 110E2 overlapping the column shielding pattern 108R1 (i.e., the second portion 110E2 is located on one of the two column shielding patterns 108R1, 108R 2), and the first portion 110E1 is connected to the second portion 110E2.

It is easy to say that the first portion 110E1 and the second portion 110E2 are different portions on the same side. That is, the first portion 110E1 and the second portion 110E2 are different portions of the first side 110S1 of the first color filter unit 110. The portion of the first side 110S1 overlapping the column shielding pattern 108R1 having the main spacers 118 and/or the sub-spacers 120 thereon is the second portion 110E2, and the remaining portion is the first portion 110E1. In addition, the first portion 110E1 may overlap one of the row mask patterns 108C2 and 108C3, for example, in this embodiment, the first portion 110E1 overlaps the row mask pattern 108C 2.

Referring to fig. 2, this figure is an enlarged view of a portion of fig. 1C. As shown in fig. 2, the shortest distance between the extension line 132 of the first portion 110E1 of the first color filter unit 110 and the center 118C of the main spacer 118 is a distance D1, the shortest distance between the second portion 110E2 and the center 118C of the main spacer 118 is a distance D2, and the distance D1 is smaller than the distance D2, wherein the extension direction of the extension line 132 is the main extension direction of the first portion.

By making the distance D1 smaller than the distance D2, the manufacturing process yield of the display panel can be improved. In detail, as the display device is developed to be light, thin, and short, the thickness of the flat layer conformally or blanket disposed on the color filter unit is reduced, such that the flat layer generates a recess at the edge of the color filter unit, such as the recess generated by the flat layer 116 at the sides 110S1 and 110S2 of the first color filter unit 110 in fig. 1A. If the recess is disposed below the center of the main spacer, the flatness of the top surface of the main spacer is affected, so that the top surface of a portion of the main spacer is skewed, the space between the first substrate and the second substrate cannot be kept the same, and even bubbles may be generated between the first substrate and the second substrate, so that the yield of the manufacturing process of the display panel is reduced.

Therefore, the side edge of the color filter unit is deviated from the center of the spacer on the color filter unit, so that the concave of the flat layer is deviated from the center of the spacer on the flat layer, and the probability of generating deflection on the top surface of the main spacer is reduced. Therefore, the distance between the first substrate and the second substrate is kept the same, and the manufacturing process yield of the display panel is improved.

In one embodiment, as shown in fig. 2, the distance D2 may be about 1.5 times to about 3.5 times (d2=1.5×d1 to 3.5×d1), for example about 2 times to about 3 times (d2=2×d1 to 3×d1) the distance D1. Alternatively, the distance D2 may be about 0.5 to about 1.5 times the radius R1 of the primary spacer 118 (d2=0.5×r1 to 1.5×r1), for example about 0.7 to about 1.2 times (d2=0.7×r1 to 1.2×r1), or about 1 time (d2=r1).

When the distance D2 is about 1 time the radius R1 of the main spacer 118 (d2=r1), it means that the second portion 110E2 of the first color filter unit 110 overlaps the edge 118BE of the bottom surface 118B of the main spacer 118.

Further, in one embodiment, as shown in FIG. 2, the first portion 110E1 of the portion is a straight line segment extending along one of the pair of data lines 126 (e.g., data line 126B shown in FIG. 1B), and the second portion 110E2 is a curved line segment that follows the curvature of the bottom edge 118BE of the main spacer 118.

In one embodiment, the curvature of the curved portion of the second portion 110E2 is substantially the same as the curvature of the bottom edge 118BE of the primary spacer 118. In other embodiments, the curvature of the curved portion of the second portion 110E2 may BE about 1.2 to about 0.8 times, such as about 1.1 to about 0.9 times, the curvature of the bottom edge 118BE of the primary spacer 118.

Referring to fig. 1A and 1C, a sub-spacer 120 is disposed between the first color filter unit 110 and the third color filter unit 114, where the sub-spacer 120 is disposed on one of the two column shielding patterns (108R 1 and 108R 2) (e.g., on the column shielding pattern 108R 1). The third color filter unit 114 has a second side 114S1, the second side 114S1 includes a third portion 114E1 located between two rows of shielding patterns (108R 1 and 108R 2), and a fourth portion 114E2 located on one of the two rows of shielding patterns (108R 1 and 108R 2), and the third portion 114E1 is connected to the fourth portion 114E2. The portion of the second side 114S1 between two adjacent row shielding patterns and the portion of the second side 114S1 overlapping the row shielding pattern 108R2 without the main spacers 118 and the sub-spacers 120 thereon are collectively referred to as a third portion 114E1. The portion of the second side 114S1 overlapping the row shielding pattern 108R with the main spacers 118 and/or the sub-spacers 120 thereon is a fourth portion 114E2, and the third portion 114E1 is connected to the fourth portion 114E2. In addition, the third portion 114E1 and the fourth portion 114E2 are both straight line segments.

Referring to fig. 2, in this embodiment, the extension line of the third portion 114E1 of the third color filter unit 114 coincides with the portion of the fourth portion 114E2, so that the shortest distance between the extension line of the third portion 114E1 and the center 120C of the sub-spacer 120 is equal to the shortest distance between the fourth portion 114E2 and the center 120C of the sub-spacer 120, and the distances are all D3.

In addition, in this embodiment, as shown in fig. 1A and 1C, the first color filter unit 110 overlaps the second color filter unit 112, and the first color filter unit 110 does not overlap the third color filter unit 114. In detail, the second color filter unit 112 and the first color filter unit 110 in fig. 1C have sides 112S2 and 110S1 adjacent to each other in a top view, while the side 112S2 in fig. 1A is actually a side wall of the second color filter unit 112 in a cross-sectional view, and the side 110S1 is actually a side wall of the first color filter unit 110, and the two side walls are in direct contact at an interface. Similarly, the third color filter unit 114 and the first color filter unit 110 in fig. 1C have sides 114S1 and 110S2 adjacent to each other in a top view, while the side 114S1 in fig. 1A is actually a side wall of the third color filter unit 114 in a cross-sectional view, and the side 110S2 is actually a side wall of the first color filter unit 110, and the two side walls are not in contact with each other, and are separated by the planarization layer 116.

It should be noted that other configurations of the first color filter unit 110, the second color filter unit 112, and the third color filter unit 114 are also possible, and this will be described in detail later. The embodiments shown in fig. 1A-2 are for illustration only, and the scope of the application is not limited thereto.

In one embodiment, the first color filter unit 110 is a red filter unit, the second color filter unit 112 is a blue filter unit, and the third color filter unit 114 is a green filter unit. It is easy to say that in this embodiment, the main spacers 118 are disposed between the red filter unit and the blue filter unit, but not between the green filter unit and any other filter unit. Since the area of the shielding layer 108 corresponding to the main spacer 118 is larger, more light is shielded. And among red, blue and green, the intensity of green light is strongest. Therefore, the main spacers 118 are not disposed between the green filter unit and any other filter unit, so that the shielding layer 108 with a larger area corresponding to the main spacers 118 can be prevented from shielding green light with stronger intensity, and the luminous intensity of the display panel can be improved.

Referring to fig. 3, a cross-sectional view is shown along line 3-3 of fig. 1C. In the embodiment shown in fig. 3, the second substrate 104 and the shielding layer 108 (e.g., the row shielding pattern 108C 2) have undercut portions 134 and 136 therebetween, and a portion of the first color filter unit 110 and the second color filter unit 112 may fill in the undercut portions 134 and 136, respectively. In addition, part of the third color filter unit (not shown in fig. 3) may also fill in the undercut portion between the other second substrate and the shielding layer.

Fig. 4A to 4B are a top view and a cross-sectional view of a display panel 400 according to another embodiment of the present application. It should be noted that the same or similar components or films as described above will be denoted by the same or similar reference numerals, and the materials, manufacturing methods and functions thereof are the same as or similar to those described above, so that the description thereof will not be repeated. The difference between the embodiment shown in fig. 4A to 4B and the foregoing embodiment of fig. 2 is that the shortest distance between the extension line of the third portion of the third color filter unit and the center of the secondary spacer is smaller than the shortest distance between the fourth portion thereof and the center of the secondary spacer.

As shown in fig. 4A, the shortest distance between the extension line 138 of the third portion 114E1 of the third color filter unit 114 and the center 120C of the secondary spacer 120 is a distance D4, the shortest distance between the fourth portion 114E2 and the center 120C of the secondary spacer 120 is a distance D5, and the distance D4 is smaller than the distance D5, wherein the extension direction of the extension line 138 is the main extension direction of the third portion.

By making the distance D4 smaller than the distance D5, the manufacturing process yield of the display panel can be improved. In detail, as the display device is developed towards light, thin and small, the thickness of the flat layer conformally or blanket disposed on the color filter unit is reduced, such that the flat layer generates a recess at the edge of the color filter unit, such as the recess generated by the flat layer 116 at the side 110S2 of the corresponding first color filter unit 110 and the side 114S1 of the third color filter unit 114 in fig. 1A. If the recess is disposed below the center of the sub-spacer, the flatness of the top surface of the sub-spacer is affected, so that the top surface of a portion of the sub-spacer is skewed, resulting in a reduced yield of the display panel.

Therefore, the side edge of the color filter unit is arranged at the center of the secondary spacer, so that the concave of the flat layer is also deviated from the center of the secondary spacer, the probability of generating skew on the top surface of the secondary spacer is reduced, and the manufacturing process yield of the display panel is improved.

In one embodiment, as shown in fig. 4A, the distance D5 may be about 1.5 times to about 3.5 times (d5=1.5×d4 to 3.5×d4), for example about 2 times to about 3 times (d5=2×d4 to 3×d4), the distance D4. Alternatively, the distance D5 may be about 0.5 to about 1.5 times the radius R2 of the secondary spacer 120 (d5=0.5×r2 to 1.5×r2), for example about 0.7 to about 1.2 times (d5=0.7×r2 to 1.2×r2), or about 1 time (d5=r2).

When the distance D5 is about 1 time the radius R2 of the sub-spacer 120 (d5=r2), it means that the fourth portion 114E2 of the third color filter unit 114 overlaps the edge 120BE of the bottom surface 120B of the sub-spacer 120.

Further, in one embodiment, as shown in FIG. 4A, the third portion 114E1 of the portion is a straight line segment extending along one of the pair of data lines (e.g., data line 126C), and the fourth portion 114E2 is a curved line segment that follows the curvature of the bottom edge 120BE of the secondary spacer 120.

In addition, in the embodiment shown in fig. 4B, the first color filter unit 110 and the second color filter unit 112 are not overlapped, and the first color filter unit 110 and the third color filter unit 114 intersect at a point 140. In detail, the second color filter unit 112 and the first color filter unit 110 have sides 112S2 and 110S1 adjacent to each other, and the sides 112S2 and 110S1 are not in contact with each other, and the sides 112S2 and 110S1 are separated by the planarization layer 116. In addition, the third color filter unit 114 and the first color filter unit 110 have sides 114S1 and 110S2 adjacent to each other, and the sides 114S1 and 110S2 are only in direct contact at the point 140.

It should be noted that other configurations are possible between the first color filter unit and the second color filter unit, and between the first color filter unit and the third color filter unit. It is understood by those of ordinary skill in the art that the first color filter unit and the second color filter unit may overlap each other, intersect at a point, or do not overlap each other. The first color filter unit and the third color filter unit may overlap each other, intersect at a point, or do not overlap each other.

Fig. 5A to 5B are top and cross-sectional views of a display panel 500 according to another embodiment of the present application. It should be noted that the same or similar components or films as described above will be denoted by the same or similar reference numerals, and the materials, manufacturing methods and functions thereof are the same as or similar to those described above, so that the description thereof will not be repeated. The difference between the embodiment shown in fig. 5A to 5B and the embodiment shown in fig. 4A to 4B is that the second portion of the first color filter unit is disposed outside the region corresponding to the main spacer, but not within the region corresponding to the main spacer. And the fourth part of the third color filter unit is arranged outside the area corresponding to the secondary spacer, but not arranged inside the area corresponding to the secondary spacer.

In detail, in the embodiment shown in fig. 5A to 5B, the first color filter unit 110 overlaps the second color filter unit 112, and the first color filter unit 110 also overlaps the third color filter unit 114. In addition, if the display panel 500 is viewed from a top view, the second portion 110E2 of the first color filter unit 110 is disposed outside the region corresponding to the main spacer 118, but not disposed inside the region corresponding to the main spacer 118. In addition, if the display panel 500 is viewed from a top view, the fourth portion 114E2 of the third color filter unit 114 is disposed outside the area corresponding to the sub-spacer 120, but not disposed inside the area corresponding to the sub-spacer 120. In addition, the second portion 110E2 of the first color filter unit 110 and the fourth portion 114E2 of the third color filter unit 114 are disposed on the shielding layer 108. It is easy to understand that the second portion 110E2 of the first color filter unit 110 and the fourth portion 114E2 of the third color filter unit 114 are disposed in the region corresponding to the shielding layer 108.

Fig. 6 is a top view and a cross-sectional view of a display panel 600 according to another embodiment of the present application. It should be noted that the same or similar components or films as described above will be denoted by the same or similar reference numerals, and the materials, manufacturing methods and functions thereof are the same as or similar to those described above, so that the description thereof will not be repeated. The embodiment shown in fig. 6 differs from the previous embodiments of fig. 1A-5B in that the masking layer has only a column masking pattern and no row masking pattern.

In detail, in the embodiment shown in fig. 6, the shielding layer 108 has only the column shielding patterns 108R1 and 108R2 shielding the pair of scan lines, and does not have the row shielding pattern shielding the data lines.

Fig. 7 is a top view and a cross-sectional view of a display panel 700 according to another embodiment of the present application. It should be noted that the same or similar components or films as described above will be denoted by the same or similar reference numerals, and the materials, manufacturing methods and functions thereof are the same as or similar to those described above, so that the description thereof will not be repeated. The embodiment shown in fig. 7 differs from the previous embodiments of fig. 1A-6 in that the display panel does not include a flat layer disposed over the color filter unit.

In detail, in the embodiment shown in fig. 7, the display panel 700 does not include the flat layer disposed on the first color filter unit 110, the second color filter unit 112 and the third color filter unit 114, and the main spacers 118 directly contact the first color filter unit 110 and the second color filter unit 112, and the sub-spacers 120 directly contact the third color filter unit 114 and the first color filter unit 110.

Fig. 8 is a top view and a cross-sectional view of a display panel 800 according to another embodiment of the present application. It should be noted that the same or similar components or films as described above will be denoted by the same or similar reference numerals, and the materials, manufacturing methods and functions thereof are the same as or similar to those described above, so that the description thereof will not be repeated. The embodiment shown in fig. 8 differs from the previous embodiments of fig. 1A-7 in that the flat layer is blanket-formed over the color filter unit, rather than conformally-formed over the color filter unit.

In detail, in the embodiment shown in fig. 8, the planarization layer 116 is blanket (blanket) disposed on the first color filter unit 110, the second color filter unit 112 and the third color filter unit 114. It should be noted that although in this embodiment the planarization layer 116 is blanket (blanket) provided on the color filter unit, the planarization layer still generates Xu Aoxian at the edges of the color filter unit. Therefore, the application can improve the manufacturing process yield of the display panel even if applied to the display panel with the blanket deposited flat layer.

In summary, the side of the color filter unit is offset from the center of the spacer, so that the recess of the flat layer is also offset from the center of the spacer, and the yield of the display panel can be improved.

Although embodiments of the present application and their advantages have been described above, it should be understood that those skilled in the art may make modifications, substitutions and alterations herein without departing from the spirit and scope of the application. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but rather should be understood to correspond to the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, unless otherwise indicated herein, unless otherwise clearly indicated by the context of the present disclosure. Accordingly, the present application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this application pertains. In addition, each claim constitutes a separate embodiment, and the scope of the application also includes combinations of the individual claims and embodiments.

Claims

1. A display panel, comprising:

the first substrate comprises a data line and two scanning lines;

a second substrate disposed opposite to the first substrate;

the shielding layer is arranged on the second substrate and comprises two rows of shielding patterns for shielding the two scanning lines;

the first color filter unit is arranged on the second substrate, wherein the first color filter unit is blue;

the second color filter unit is arranged on the second substrate, the second color filter unit is red, and the first color filter unit is provided with a first side edge adjacent to the second color filter unit;

the third color filter unit is arranged on the second substrate, wherein the third color filter unit is green, and the first color filter unit is provided with a second side edge adjacent to the third color filter unit; and

a spacer, wherein at least a portion of the first side of the first color filter unit is curved in conformity with a portion of an edge of the spacer, wherein one of the two rows of shielding patterns has an expanding portion corresponding to the spacer, the expanding portion has a circular arc edge corresponding to the edge of the spacer,

and the spacer is overlapped with the first color filter unit, is arranged close to the first side edge of the first color filter unit and far away from the second side edge, and is not overlapped with the third color filter unit.

2. The display panel of claim 1, wherein the shielding layer further comprises a row of shielding patterns shielding the data lines, and at least part of the first color filter unit is located on the row of shielding patterns.

3. The display panel of claim 1, wherein the first color filter unit overlaps the second color filter unit and the first color filter unit does not overlap the third color filter unit.

4. The display panel of claim 1, wherein an undercut portion is formed between the second substrate and the shielding layer, and a portion of the first color filter unit fills the undercut portion.

5. The display panel of claim 1, wherein the spacer is a main spacer, and the display panel further comprises:

the secondary spacer is arranged between the first color filter unit and the third color filter unit, wherein the primary spacer has a first height, the secondary spacer has a second height, and the first height is larger than the second height.

6. The display panel of claim 1, wherein the first side of the first color filter unit is offset from a center of the spacer.

7. The display panel of claim 1, further comprising

The flat layer is conformally arranged on the first color filter unit, and the spacer is arranged on the flat layer.

8. The display panel of claim 1, wherein the spacers directly contact the first color filter unit.